Source: https://ia800102.us.archive.org/0/items/DTIC_ADA095571/DTIC_ADA095571.pdf
(This is just a quick extraction. I'll upload a cleaned up version at some point.)
‘The abbreviations and acronyms listed in this section are some of the more common ones used in the context of aeronautics and include those used in the definition section of this dictionary. The list includes name acronyms, affiliation acronyms and abbreviations, agency acronyms and abbreviations, etc., which may be useful in reading this dictionary. Note that the same abbreviation or acronym may indicate more than one definition and these are separated by a semicolon.’
ABETS Airborne Electrical Test Set ABMM Anti-Ballistic Missile Missile ABMS Advanced Ballistic Missile Systems ABN Aerodrome Beacon ABPS Air Breathing Propulsion System ABRES Advanced Ballistic Re-entry %ystem ABS CLG Absolute Ceiling AC Aerodynamic Center. Anti-Clutter; Absolute Ceiling; Altocumulus; Armament Control A a.c. Alt3mating Current A/C Aircraft ACAS Airborne Collision Avoidance System AA Anti-Aircraft: Anti-Aircraft Artillery: Air Armament: ACB Air Circuit Breaker Air-to-Air ACBWS Automatic Chemical Biological Warning System AAA Anti-Aircraft Artilery ACC Air Control Centre AAC Air Approach Control: Automatic Approach Control ACCESS Aircraft Communications Electronic Signalling AADA Anti-Aircraft Defended Area System: Automatic Computer-Controlled Electronics AADC Advanced Avionic Digital Computer: Anti-Aircraft Scanning System Defence Commander accry Accessory AAFB Auxiliary Air Force Base ACCS Automatic Checkout and Control System AAFC Anti-A:rcraft Fire Control acdt Accident AAFE Advanced Application Flight Experiment ACE Altimeter Control Equipment; Automatic Computing Engine; Automatic Checkout Equipment: Acceptance AAFSS Advanced Aerial Fire Support System Checkout Equipment AAGW Air to-Air Guided Weapons ACES Advanced Concept for Ejection Seat AAH Advanced Armed Helicopter ACG Air Cargo Glider AAI Air-to-Air Identification ACI Air Combat Information AAIB Aircraft Accident Investigation Board ACID Aircraft Identification AAL Aircraft Approach Limitation ack Acknowledge AALS Advanced Approach and Landing System ACLS Automatic Carrier Landing System; All-weather AALT Automatic Azimuth Laying Theodolite Carrier Landing System (F-14A); Air Cushion Landing AAM Air-to-Air Missile: Anti-Aircraft Missile System; Automated Control and Landing System AAP Apollo Applications Program: Analog Auto Pilot ACM Active Countermeasures AAPP Auxiliary Airborne Power Plant ACME Automatic Control and Maneuvering Electronics: Attitude Control & Maneuvering Electronics AAPR Airbrnt Auilr Rport ACOE Automatic Checkout Equipment AAR Aircraft Accident Report AARPS Air Augmented Rocket Propulsion System ACPM Attitude Control Propulsion Motors AAS Abort Advisory System ACP Altimeter Check Point; Audio Control Panel: Acceptance Checkout Procedure: Azimuth Change AASD Anti-Aircraft Self-Destroying Pulse AASR Airpcrt & Airways Surveillance Radar ACPU Auxiliary Computer Power Unit AATC Automatic Air Traffic Control ACPS Attitude Control Propulsion System AAV Airborne Assault Vehicle acq Acquire; Acquisition AB Air Bearing: Auto-Beacon; Air Base; After-Burner: Adapter Booster., Airborne ACR AirfieClodn trol Radar; Air Control and Reporting: A,B Sound Levels: See 'Sound Level Meter' and 'Total Approach Control Radar Noise Load' ACRE Automatic Checkout & Readiness Equipment ABC Automatic Brignness Control: Advanced Biomedical ACRES Airborne Communication Relay Stas0on Capsule: Advanced Battery Acquisition Rad3r: ACS Attitude Control & Stabilizatin; Atomic Biological Chemical War: Advancing Blade Astro-C;mmunictions System Atmosphere Control Concept System; Armament Control System: Attitude Control ABE Air Breathing Engine System; Automatic Control System ABES Air Breathing Engine System acst Acoustic 829 tl ACT ABBREVIATIONS AND ACRONYMS ACT Active Control Technology: Activation: Automatic AEWC Airborne Early Warning and Control Checkout Techniques AF Air Force: Audio Frequency ACTF Altitude Control Test Facilit4 A/F Airfield: Airframe ACU Acceleration Control Unit: Air Conditioning Unit AFAADS Advanced Fo;.vard Area Air Defense System ACV Air Cushion Vehicle AFB Air Force Base; Anti-Friction Bearing ACW Air Control and Warning System: Aircraft Control AFBM Air Force Ballistic Missile and Warning AFC Automatic Frequency Control AC&W Aircraft Control and Warning AFCE Automatic Flight Control Equipment ACWS Aircraft Control & Warning System AFCS Adaptive Flight Control System: Automatic Flight AD Aerodrome: Air Defence FCoorncter ol System; Avionic Flight Control System: Air Communication System A/D Analog(ue) to Digital; Arm/Destruct AFCO Automatic Fuel Cutoff ADA Air Defense Area AFI Automatic Fault Isolation ADAC Automated Direct Analog(ue) Computer AFLS Approach Flashlighting System ADAM Air Deflection and Modification AFM Anti-Friction Metal: Air Force Manual ADAR Advanced Design Array Radar AFPAM Automatic Flight Planning and Monitoring ADA Systems Action Data Automation Systems AFR Automatic Frequency Regulation: Air Force ADC Airborne Digital Computer; Automatic Digit Control: Regulation: Air-Fuel Ratio Air Data Computer: Aerodrome Control AFTN Aeronautical Fixed Telecommunication Network ADCC Air Defense Control Center A/G Air-to-Ground ADF Automatic Direct-on Finder; Automatic Direction AGACS Automatic Ground-Air Communication System Finding (Equipment) AGAP Atlitude Gyro Accelerometer Package ADI Attitude Director Indicator; Automatic Direiction AGARD Advisory Group for Aerospace Research and Ind'cator Development ADH Automated Data Handling AGAVE Automatic Gimballed Antenna Vectoring Equipment ADISP Aeronautical Di9ital Information System Panel AGC Automatic Gain Control ADIZ Air Defense Identification Zone AGCA Automatic Ground-Controlled Approach ADL Armament Datum Line AGCS Automatic Ground Checkout System; Automatic ADM Air Defense Missi!e Ground Control System: Automatic Ground Computer ADP Acceptance Data Package: Automatic Data System Procassing AGCU Attitude Gyro Coupling Unit ADPE Automa'ic Data Processing Equipment AGE Automatic Guidance Electronics ADPLL All Digital Phase Locked Loop AGM Air-to-Ground Missile AUR Advisory Route AGT Aviation Gas Turbine ADRAN Advanced Digital Ranging System AGW Allowable Gross (Take-Off) Weight ADRS Autonatic Data Repoing System AGZ Actual Ground Zero ADS Air Defence System Air Defenca Ship: Accessory Drive System. Air Data System: Advanced I)dta ah Ampere Hour System AHI Aerodynamic Heating Indicator ADSEL Address Selection Beacon System AHRS Attitude Heading Reference System ADSS Aircraft Damage Sensing System AHRU Attitude Heading Reference Unit A'TU Auxiliary Data Translator Unit Al Attitude Indicator; Aircraft Interception. Airborne ADV Air Defence Variant Interception: Anti-Icing: Articulation Index adv Advanced Al(Radar) Aircraft Identification Radar. Air Interception Radar ADZ Air Defence Zone AIA Anti-Icing Additive AE Air Elecrical: Auxiliary Equipment AIC Aircraft in Commission; Ammunition Identification A&E Armament and Electronics Code AEA Abort Electronic Assembly AIDAS Advanced Instrumentation and Data Analysis System AEB Aft Equipment Bay AIDS Aircraft Integrated Data System; Airborne Integrated AEDS Atmospheric Electric Detection System Data System: Abort Inertial Digital System AEEC Airlines Electronic Engineering Committee AIETA Airborne Infrared Equipment for Target Analysis AER Azimuth Elevation Range AIG Address Indicating Group; Accident Investigation AERCAB Integrated Aircrew Escape/Rescue Capability Group AERO Aeronautical Weather Report AlL Airborne Instrument Laboratories AES Artificial Earth Satellite AILAS Automatic Inrtrument Landing Approach System AEROS Artificial Earth Research and Orbiting Satellite AILS Advanced Integrated Landing System; Automatic AERUSAT Aeronautical Satellit (NASA-ESRO) Inslrument Landing System AEW Airborne Early Warning AIM Air Intercept Missile 830 ABBREVIATIONS AND ACRONYMS APOTA AIMIS Advanced Integrated Modular Instrumentation AMSAM Anti-Missile Surface-to-Air Missile System AMSL Above Mean Sea Level AIMS Advanced Intercontinental Missile System AMST Advan,;d Medium STOL Transport AlP Aeronautical Information Publication AMTI Area Moving Target Indicator AIR Assembly Inspection Report; Accident Inves:igation AMTIDE Aircraft Multipurpose Test Inspection & Diagnostic Report: Aircraft Intercept Radar; Airborne Interceot Equipment Radar AMU Air Mileage Unit; Atomic Iviass Unit; Astronaut AIREW Airborne Infrared -arly Warning Maneuvering: Averge Monthly Usage AIS Aircraft Identification System; Aeronautical AN Air Navigation; Astro-Navigation: Air Force-Navy: Information Service; Apogee Impulse System; Alphanumeric Attitude Indicating System ANAF Army - Navy - Air Forcb AIT Automatic Information Test ANCR Aircraft Non-Combat Ready AJ Anti-Jamming ANFE Aircraft Not Fully Equipped AL Aluminum anhyd Anhydrous AlL Airlift ANL Annoyance Noise Level ALBI Air-Launched Ballistic Intercept inlg Analog(ue) ALBM Air-Launched Ballistic Missile AN ' Aircraft Nuclear Propulsion ALC Automatic Light Control ANPOD Aiitenna Positioning Device ALCAL Alloy Coated Aluminium aAnNt TAC Antenn Air Navigatioi Tactical Control System ALCC Airborne Launch Control Center AOB Air Order of Battle Alclad Aluminium Clad AOC Aircraft Out of Commission: Air Officer ALGM Air-Launched Guided Missiles Commanding: Automatic Overload Control. Air ALGOL Algorithmic Language Operations Center; Average Operating Cost ALIM Air-Launched Intercept Missile AOCM Aircraft Out-of-Commission Awaiting Maintenance ALMS Aircraft Landing Measuirement System AOCP Aircraft Out-of.Commission for Parts ALOFT A Language Oriented to Flight Engineering and AOK All Systems Operational and Ready Testing AOLO Advanced Orbital Launch Operations ALOTS Airborne Lightweight Optical Tracking System AOP Air Observation Post ALP Automated Learning Process AOQ Average Outgoing Quality ALPS Advanced Liquid Propulsion System AOQL Average Outgoing Quality Limit ALRI Airborne Long-Range Input AOS Acquisition of Signal ALS Approach Light System; Automatic Landing System. AOSS Active Optics Simulation System Alerting and Locating System AOT Alignment Optical Telescope ALSTA All Stations AP Accelerometer Package: Air Pollution: Airport: ALVRT Air-Launched Low Volume Ramjet Armour Piercing: Alpha Particle Spectrometer AM Amplitude Modulation A/P Autopilot AMA Air Material Area: Automatic Malfunction Ana;ysis APAR Automatic Programming and Recording AMARS Air Mobile Aircraft Refuelling System APATS Automatic Programmer & Test System AMCS Airborne Missile Control System APC Automatic Phase Control: Automatic Pitch Control: AME Angle Measuring Equipment Aeronautical Planning Chart; Armour Piercing. AMI Advanced Manned Interceptor; Air Mileage Indicator Capped. Approach Control APCHE Automatic Programmed Checkout Equipment AMLLV Advanced Multipurpose Large Launch Vehicles APCON Appoac Coral AMM Anti-Missile Missile a-nmo Ammunition APCS Attitude and Pointing Control Syiem amp Ampere APO Auxiliary Power Distribution amp hr Ampere Hours AP&D Advanced Flanning and Design amp min Ampere Minutes AP/FD Autopilot/Flight Director ampl, Amphibian: Amphibious APG Air Proving Ground: Azimuth Pulse Generator ampli Amplifier API American Petroleum Institute; Alignment Progress AMPS Advanced Maneuvering Propulsion System Indicator; Armour-Piercing Incendiary; Air Position Indicator AMPSS Advanced Manned Penetrator Strike System: AnNicatos Advanced Manned Precision Strike System APIC0N Aircraft Position Information Converter AMPT Advanced Maneuvering Propulsion Technology APICS Air Pollution Information & Computer System AMO Analog(ue) Multiplexer Quantizer APIT Armour Piercing Incendiary Tracer AMS Aeronautical Material Specifications APM Anti-Personnel Missile AMSA Advanced Manned Strategic Aircraft APOTA Automatic Positioning Telemetering Antenna 831 APP ABBREVIATIONS AND ACRONYMS APP Auxiliary Power Plant: Apparatus arty Artillery approx Approximate Ar sub 1 The temper3ture at which transformation of austenite to ferritc and carbide is complete appx on cooling. See Appendix transformation temperature'. APS Accessory Power Supply; Ascent Propulsion System; Ar sub 2 The temperature at which austenite starts to Airbome Power Supply; Absolute Pressure Sensor; transform to alpha ferrite on cooling. See SAeurxviilciaer;y Power Supply: Aircraft Prepared for 'transformation temperature'. ri AirPbrroepautlhsiionng PSryospteumls ion System: Auxiliary Ar sub 4 The temperature at which delta ferrite transforms to austenite. See 'transformation temperature'. APS weight Aircraft-Prepared-for-Service Weioht ARU Auxiliary Readout Unit (S-3 A) APT Automatic Picture Transmission: Automatic Position ARV Aeroballistic Re-entry Vehicle; Armoured Recovery Telemetering; Automatic Programmed Tooling Vehicle AP-T Armour Piercing, with Tracer (Ammunition) AS Aeronautical Standard: Aircraft Standard: Air APU Auxiliary Power Unit Superiority; Altostratus: Antisubmarine; Adapter Section. Automatic Skin AL Acceptance Quality Level A/S Ascent Stage (LEM) AR Aspect Ratio; Advanced Reactor; Anti-Radar; Aircraft a/s Airspeed Rocket; Armed Reconnaissance; Acquisition Radar; Aerial Refuelling ASA Acrosurface Servo-Amplifier; Automatic Systems Analysis; Amplifier & Switch Assembly; About A/R At the Rate of; Acquisition/Reference: As Required Sensor Assembly ARA Auxiliary Recovery Antenna; Aerial Refuelling Area; ASACS Airborne Surveillance & Control System Airoorne Rad3r Approach ASAP Automated 3tat;stcal Analysis Program ARB Air Registration Board (U.K) ASAS Aerodynamic Stability and Augmentation System ARBS Angular Rate Bombing System ASC Automatic Sensitivity Control: Aerodynami Surface ARC Advanced Reentry Concept: Automatic Remote Control: Accelerometer Signal Conditioner Control ASCS Automatic Stabilization and Contro! Systems ARCAS All Purpose Rocket for Collecting Atmospheric ASD Advanced Surveillancc Drone: Aeronautical Systems Soundings; Automatic Radar Chain Acquisition Division System ASDE Airport Surface Detection Equipment; Airfield Surface Ar sub cm The temperature at which carbide in a steel starts to Detection Equipment precipitate on cooling. See 'transformation ASDIC Allied Submarine Detection Investigation Committee temperature'. ASDS Aircraft Sound Description System AARRCL/EW AArrcc Weldele ASE Airborne Search Equipment; Automatic Stabilization ARELEM Arithmetic Element Program Equipment ARENTS Advanced Research Environmental Test Satellite ASEP Automatic Sequence Execution and Processor ARI Airborne Radio Instrument ASEWPS Anti-Submarine Weaoons Environmental Piedicton ARIES Advanced Radar Information Evaluation System System ARINC Aeronautical Radio Incorporated ASFIR Active Sweep Frequency Interferometer Radar ARIP Automatic Rocket Impact Predictor ASFTS Auxiliary Systems Function Test Stand ARIS Advanced Range Instrumentation Systems AS/GPD Attitude Set and Gimbal Position Display ARL Acceptable Reliability Level ASH Assault Support Helicopter ARM Armature; Anti-Radiation Missile. Anti-Radar Missile ASI Airspeed Indicator; Azimuth Speed Indicator; ARM-PL Armor Plate Augmented System Igniter. Augmented Spark Igniter ARMS Aerial Radiological Muasuring System ASIS Abort Sensing & Implementation System AROD Airborne Ranging and Orbital Determination ASK Amplitude Shift Keying; Analog(ue) Select Keyboard ARODS Airborne Radar Orbital Determination System ASLV Advanced Small Launch Vehicle ARP Azimuth Reference Pulse; Advanced Reentry ASM Air-to-Surface Missile Programme: Aerodrome Reference Point: Air Raid ASMD Anti-Ship Missile Defense Protecton/Precautions ASMI Aerodrome Surface Movement Indicator. Airfield ARS Advanced Reconnaissance Satellite; Attitude Surface Movement Indicator Reference System; Air Rescue Service: Automatic Recovery System. Atmospheric Revitalization ASMS Advancr.d Surface Missile Systrm; Atmosphere Subsystem: Atmosphere Revitalization System Sensing & Maintenance System ARSR Air Route Surveillance Radar ASN Average Sample Number ART Advanced Research Technology; Automatic Range A-SOL Anti-Solar Tracking; Artificial ASP Aerospace Plane; Automatic Synthesis Program; ARTC Air Route Traffic Control Atmospheric Sounding Projectile: Automatic Sample ARTCC Air Route Traffic Control Center Processor: Anti-Submarine Patrol: Atomic Strike ARTG Azimuth Range and Timing Group Plan; Ammuntin Supply Point ARTOC Area Route Traffic Control Centre ASPA Auxiliary Storage & Playback Assembly ARTS Advnced Radar Traffic System. Automated Radar ASPECT Acoustic Short Pulse Echo Classification Technique Tracking System AS/POT Agena Systems/Power on Test 832 ABBREVIATIONS AND ACRONYMS AWX ASR Air Sea Rescue; Airport Surveillance Radar: Aviation ATR Air Traffic Regulation; Anti-Transmit-Receive. Safety Regulation; Airborne Surveillance Radar Automatic Transmitter Receiver; Automatic Target ASROC Anti-Submarine Rocket Recognition: Air Turbo Rocket; Analog(ue) Tape Recorder; Air Transport Racking ASS Aerospace Survedlance System; Acquisition Sun ATRAN Automatic Terrain Recognition and Navigation Sensor ATRID Automatic Target Recognition. Identification & ASSET Aerothermodynamic/Elastic Structural System Detection Environmental Test ATS Applications Technologyi: Astronomical Time Switch: ASST Advanced Supersonic Transport Air Traffic Srvices: Automat:c Test System: assy Assembly Applications Technology Satellite AssemblyotngSlry ATSE ngn AST All Systems Test: Advanced Supersonic Transport ATSE Advanced Throttling Slurry Engine ATSIT Automatic Technique for Selection & Identification of ASTAS Antiradar Surveillance and Target Acquisition System Targets ASTIA Armed Services Technical Information Agency (US) ATSS Acquisition and Tracking Subsystem ASTRA Appiication of Space Techniques Relating to Aviation ATT Advanced Transport Technology (Panel) ATTREF Attitude Reference Program ASU Altitude Sensing Unit ATVC Automatic Thrust Vector Control ASV Aerospace Vehicle: Air to Surface Vessel ATW Anti-Tank Weapon Reconnaissance (Radar) AT WT Atomic Weight ASW Anti-Submarine Warfare: Anti-Sea Warfare. AU Astronomical Unit Anti-Submarine Weapon AUM Air to Underwater Missile ASWCR Airborne Surveillance Warning & Cortrol Radar AUTOCAT Automatic Control of Air Transmissions AT Armament Test; Air Traffic. Air Temperature; Atomic Time A Tt ank .- AUTODIN Automatic Digital Network: Automatic Distribution Network A&T Assembly & Test AUTOSYN Self-Synchronization ATA Assembly and Test Area. Actual Time of Arrival: Air AUTOVON Automatic Voice Network Transport Association; Avionics Test Article AUTRAN Automatic Target Recognition Analysis ATAR Anti-Tank Aircraft Rocket AUW All-Up Weight ATBM Antitactical Ballistic Missile: Average Time Between Maintenance aux Auxilary ATC Air Traffic Control: Air Training Command; Automatic AV Angulas Velocity: Average: Audio-Visual Tracking Control: Average Total Cost AVC Automatic Volume Control ATCA Attitude and Translation Control Assembly AVCAT Aviation fuel with a high flash point ATCC Air Traffic Control Centre AVCS Advanced Vidicon Camera System AVD Automatic Voice Data ATCE Ablative Thrust Chamber Engine ADAtmtcVieDt ATCE Aiv Thrus Chamr Beang e m AVDT Angular Variable Differentiai Transformer ATCRBS Air Traffic Control Radar Beacon System AVE Aerospace Vehicle Equipment ATCRU Air Traffic Control Radar Unit AVGAS Aviation Gasoline ATCS Air Traffic Communication System. Air Traffic Control AVHRR Advanced Very High Resolutin Radiometer Service. Active Thermal Control Subsystem; Active Thermal Control System AVI Airborne Vehicle Identification ATCSS Air Traffic Control Signalling System AVID Advanced Visual Informi'ion Display ATD Actual Time of Departutre AVM Airborne Vibration Monitoring ATDS Airborne Tactical Data System AVOLO Automatic Voice Link Observation ATE Air-Turbo Exchanger. Automatic Test Equipment. AVP Address Verificatirn Pulse Advanced Technology Engine AVS Advanced Vertical Strike Fighter: Air Ventilated Suit ATF Actual Time of Fall. Air Task Force: Altitude Test AVTAG Aviation Fuel (Gasoline/Kerosene) Facility AVTUR Kerosene Jet Fuel AATTGG A Air to Ground AntT Guid AW Above Water: AII-Wuather; Automatic Weapons: Air ATGAR Anti-Tank Guided Air Rocket Warning ATGW Anti-Tank Guided Weapon AWACS Airborne Warning & Control System ATGM Anti-Tank Guided Missile AWADS Adverse Weather Aerial Delivery System ATI Average Total Inspection: Air Technical Intelligence AWCS Air Weapons Control System ATLAS Automatic Tape Load Audit System; Abbreviated Test Language for Avionics Systems AWG Airborne Weapon Guidance ATM Anti-Tank Missile AWL All-Weather Landing System ATMW Anti-Tank Missilo Weapon AWOP All-Weather Operation Panel ATO Ass'sted Take-Of; Actual Time Over AWRS Airborne Weather Reconnaissance System ATOC Average Total Operating Cost AWS Air Warning System; Air Weapon System. Air ATOLL Acceptance Test or Launch Lainguage Weather Service ATP Authority to Proceed; Alternate Target Point AWX All-Weather Aircraft: All-Weather Landing System 833 J7 AWY ABBREVIATIONS AND ACRONYMS AWY Airway BESS Binary Elec-rcmagnetic Signal Signature AZS Automatic Zro Set BET Best Estimated Trajactory BEV Billion Electron Volts B BF Back Feed BFO Beat Frequency Oscillator BA Blind Approach: Bank Angle BGG Booster Gas Generator BAB Babbitt BGRV Boost Glide Re-Entry Vehicle BABS Beam-Approach Beacon System: Blind-Approach BH Bninell Hardness: Block House Beacon System BHC Blockhouse Computer BAC 8arometric Altitude Control BBHHNC BBrliHnuelsl Hardneossm Numebrer BACE Basic Automatic Checkout Equipment BHP Brake Horsepower BADAS Binary Automatic Data Annotation System BHP-HR Brake Horsepower-Hour BADGE Base Air Defense Ground Environment BI Base Ignitio BADIC Biological Analysis Detection Instrumentation & BIA Boost. Insertion & Abort Control BIC Barium Iodide Cloud BAI Barometric Altitude Indicator BIG Biological Isolation Garment BAINS Basic Advanced Integrated Navigation System BIGS Booster Inertial Guidance Sytem bal Balance BIH Build in Hold BALLUTE Balloon Parachute BIOSAT Biological Satellite BALS Blind Approach Landing System BIRDIE Battery Integration & Radar Display Equipment BAMBI Ballistic Missile Boost Intercept BISS Bio-lsolator Suit System BANIR Bombing & Navigation Inertial Reference BIT Built in Test BAP Base Auxiliary Power; Best Adoptive Path BITE Built in Test Equipment BARB British Angular Rate Bombsight Bk/Az Back Azimuth BARN Bombing & Reconnaissance Navigation bkr Breaker BARS Backup Attitude Reference System bkup Backup BAS Basic Airspeed: Blind Approach System hkwd Backward BATO Balloon-Assisted Take-Off BL Bombline BATS Ballistic Aerial Target System BLAM Ballistically Launched Aerodynamic Missile BB Breadboard: Ball Bearing: Building Block: Short BIC Boundary Layer Control Range Bomber BBDC Before Bottom Dead Centre BLH Band-Limited (ELF) Hiss BBL Barrel BLIMP Boundary Layer Integral Matrix Procedure BC Battery Changer: Ballistic Camera BLIP Background-Limited Infrared Photoconductor BCD Binary Coded Decimal. Binary Coded Data BLOM Booster Lift Off Mass BCI Binary-Coded Information BLOW Booster Lift Off Weight BCN Beacon BLP Basic Launch Plan BCU Buss Control Unit BLUCKET Blade + Buckut BD Base Detonating: Band bm Beam B/D Binary to Decimal BM Base Maintenance: Bench Mark BDA Bomb Damage Assessment B/M Bench Maintenance (SM is preferred) BDC Bottom Dead Centre BMAG Body-Mounted Attitude Gyro BDF Base Detonation Fuse BMD Ballistic Missile Defense BDHI Bearing-Distance-Heading Indicator: Bearing Distance BME Bench Maintenance Equipment and Heipht Indicator BMEP Brake Mean Effective Pressure BDS Bomb Damage Survey: Bomb Director System BMEWS Ballistic Missile Early Warning System BDU Biumedical Display Unit BMMD Body Mass Measurements Device BE Band Elimination; Booster Engine BMR Basic Military Requirement BEACOTRON Boam Coupling BMS Basic Missile Checker BDI Bearing Deviation Indicator BDM Bomber Defence Missile BMTD Ballistic Missile Terminal Defense BECO Booster Engine Cutoff BMWS Ballistic Missile Weapon System BEEPER Remote Control Pilot BNGS Bomb Navigation Guidance System BEET Best-Estimated Evaluation Tralectory bo Burnout BEF Blunt End Forward BOA Broad Ocean Area BEP Best Efficiency Point. Bit Error Probability BOC Blowout Coil BER Bit Error Rate BOD Biochemical Oxygen Demand 834 ABBREVIATIONS AND ACRONYMS CBX BOSS BiD-Astronautic Orbiting Space Station CAA Civil Aeronautics Admini:tration: Civil Aviation GOMREPT Bomb Report Authority CAAS Computer-Aided Approach Se~quencing ROSS-WEDGE Bomb Orbital Strategic System-Wapon; CAB CapterAi e Civil Aeronaic o Development Glide Entry CAB Captive Air Bubbles: Ciil Aeronautics Board BOSU Bioastronautics Operational Support Urit CACD Computer-Aided Circuit Design B/P Blueprint CACON Cargo Container CADC Ccntral Air Data Computer (F-14A) CADDAC Cent-al Analog Data Distributing and Controlling BPDSMS Basic Point Defence Surface Missile System System BPF Band Pass Filter CADF Commutated Aerial Direction Fin(2er BPI Bits Per Inch CADFISS Computation and Data Flow Integrated Subsystem BPN Breakdown Pulse Noise CADIC Computer-Aided Design of Integrated Circuits BPR Bypass Ratio CADIE Control/Altitude Direction Indicator Electronics bprf Bullet-Proof CADL Communications and Data Link BPS Bits Per Seci.1 CADS Computer Aided Departure Sequencing BPSS Bipck Subsystem CAG Ccrrier Air Group BP Biagckustem CAI Control and Acquistion Interface BR Barrage Rocket CAINS Carrier Aircraft Inertial Navigation System BRFP Baseline Reference Flight Plan cl Cahore; Calorie brg Bearing CAM Compuier Address Matrix; Commercial Air BRIL Romb Release Line Movement; Computer Aided Manufactiring: Content BRLG Bomb. Radio. Longitudinal. Generator-Powered Addressab, Memory BRN Broadcast Net cam Camouflage BS Boresight. British Standard CAMP Cbin Air Manifold Pressure b/s Bits Per Second C and R Control and Reporting B-scan Rectangular range/bearing display CAP Capacity; Civil Air Patrol: Combat As, Patrol BSDL Boresight Datum Line CAPER Computers Aided Pattern Evaluation and Recognition BSE Base Support Equipment CAPS Combat Air Patrol Support BSI Battery Status Indicator: British Standards Institution CAR Civil Air Regulations; Cloud Altitude Radiometer BSLSS Buddy Secondary Life Support System CARA Cargo and Rescue Aircraft: Combat Aircrew Rescue BST Brief Systems Test: British Standard Time Aircraft Bstrk Bomb Service Truck CARD Computer Aided Radar Design BT Bombing Table; Bathylthermographic Equipment. CARP Computed Air Release Point BTDC BBeufronr eT imToep Dead Contra CAS Calibrated Airspeed; Close Air Support; Collisiw, Avoidance Systcm; Controlled Airspace BTD Burn to Depletion CASEVAC Casualty Evaluation by Air BTL Beacon Tracking Level CASEX Combined Aircraft Submarine Exercise BTLS Breadboard Terminal Landing System BTO BoBmT binBgm TTinhr ruougg h OOveecractaCstASF Cc.nposite Air Strike Force BTRU Barostatic Time Release Unit CASS Command Active Sonobuoy System btry Battery CASTS Countdown and Status Transmission System BTU British Thermal Unit CAT Category; Carburetor Air Temperature. Ciean Air Turbulence: Civil Air Trensport BUIC Back Up Interceptor Control System CM CHG Catapult Charge BUM Bureau of Medicine CAV Coriposite Analog(ue) Video BUV Backscatter Ultviolet CAVU Ceiling and Visibility Unlimited BV Billion Volts CB Circuit Breaker; Common Battery; Centie of BW Body Wing; Band Width. Biological Warfare; Black Buoyancy and White C/B Circuit Breaker BWA Backward Wave Amplifier Cb Cumulonimbus bWO 6ackwirc Wave Oscillator CBAL Counterbalance BWPA Backward Wave .'-, r Amplifier CBR California Bea.ing Ratio; Chemical Bacteriological byp Bypass and Radiological: Chemical Biological Radiological CBRM Charger Battery Relay Module CBU Cluster Bomb Unit C Centiyred; Celsius; Cumulus cbw Constant Bandwidth CA CertifiA'e of Airworthiness CBX C-Band Transponder 835 cc ABBREVIATIONS AND ACRONYMS CC Cloud Cover: Control Center; Control Comouter: CEP Circle of Eq~ial Probability: Circular Error Probability Combustion Chamber; Continuous Current; Cubic CEM Communications-Electronics-Meteorologica Centimetre: Coribat Closure CEMF Counter Electromotive Force Cc Cirrocumulus CERE Computer Entry and Rceadout Equipment CCA Configuration Control Action; Cartier-Controlled CERMET Ceramic Metal CCB ACplopsreo aCcohntrol Bombing CERT Composite Electrical Readiness Test CES Central Electronics System: Crew Escape System; CCC Command Control Console; C-ntral Computer Control Electronics Section Complex CEVM Consumable Electrode Vacuum Melting CCCU Crew Compartment Cooling Unit CF Centrifugal Force; Cathode Follower; Cubic Foot; CCDS Charge-Coupled Devices Carrier Frequ' ,..y: Counterfire CCE Command Control Equipment CFA Crossed Field Amplifier: Cowl-Flap Angle CCIP Continuous Computed Impact Point: Continuous CFAR Constant False Alarm Rate Contact of Impact Point CFC Central Fire Control CCIS Command Control Information System CFD Cumulative Frequency Distribution CCM Controlled Carrier Modulation; Crew Ctrgo Module CFE Contractor Furnished Equipment CCMS Couner-Counter Measures: Command Control & CFH Cubic Feet/Hour Monitor System CFHT Continuous/Flow Hypersonic Tunnel CCN Contract Change Negotiation CFIT Controlled Flight into Terrain CCP Contract Change Proposal CFM Cubic Feet Per Minute CCr Combat Crew CFP Constant Filter and Plot CCS Comvter Complex; Camera Control System; CF'. Contact Flight Rules Cor-nand Communication Systems CG Cargo Glider; Centre of Gravity CC&S Central Computer and Sequencer CFS Cubic Feet Per Second CCT Constant Current Transformer CG Centre Of Gravity CCTV Closed-Circuit Television CGI Computer-G,3neral Image CCU Combined Control Unit CGLTG Cloud to Geound Lighting CCV Control Configured Vehicle CGS ^entimetri. Gram - Second CCW Cloud and Collision Warning: Counter Clockwise CGSS Cryogenic Gas Storage System CCRP Continuous Computed Release Point CH Conductor Head; Compass Heading CD Candle Power: Control Differential: Civil Defence: CHARM CAA High Altitude Remote Monitoring Coastal Defence Radar; Cold Drawn: Countdown: CHC Choke Coil Calibration Device: Circular Dispersion CHT Cylinder - Heed Temperature C-D Convergent - Divergent CHAG Chain Arrestor Gear C&D Communication and Data; Control & Display CHG Helicopter Ships (SAM Armament) CDC Command Decoder Coax; Computer Display Channel; CHLL Compacted High-Level Language Course and Distance Calculator CDDT Countdown Demonstration Test CH-Y Condensate Heat Exchanger CDF Circuit Design Fabrication; Central Data Facility. Cl Cirrus Confined Detonating Fuse: Control Detonating Fuses C&I Communication and Instrumentation CD film Camouflage Detection Film ClAP Climatic Impact Assessment Program CDH Constant Delta Height CIC Combat Informatior, Center CDI Course Deviation Indicator; Control Direction CID Combat Information and Detection; Cable Indicator Interconnection Diagram: Cabling Interface Drawings CDP Command Data Processor, Compressor Discharge CIF Central Instrumentation Facility Pressure CIM Computer Input Matrix; Computer Input Multiplexer CDPC Central Data Processing Computer CIPHONY Ciphered Telephony CDR Critical Design Review CIP Compressor Inlet Pressure CDRS Computer Data Recording System ^IT Compressor Inlet Temperature CDS Climatological Data Sheet; Control Data System ClU Command InterfaUcnei tC;o mputer InterfaUcte C&DSS Comn,dncatins & Data Subsystems CIU Con Ieceir CDT Compressor Discharge Temperature ckpt Checkpoint: Cockpit CDU Coupling Display Unit; Controls and Displays Unit ckt Circuit CDX Control Differential Transmitter CKT BKR Circuit Breaker C-E Communications-Electronics CL Centro Line CEA Circular Error Average C L Centre Line; Closed Loop CECO Center Engine Cutoff C sub A Coefficient of Lift (Lift Coe,.;ciet) CEF Computer Execute Function CLA Center Line Average 836 ABBREVIATIONS AND ACRONYMS cryog CLAM Chemical Low Altitude Missile COMSAT Global Commercial Communications Satellite System: CLASP Composite Launch & Spacecraft Program; Computer Communications Satellite Language for Aeronautics and Space Programming COMSEC Commupcations Security CLAW Clustered Atomic Warhead COMZ Communications Zone CLC Course Line Computer CONAD Continental Air Defense CLEAR Components Life Evaluation and Reliability CONDI Convergent - Divergent CONELRAD Control of Electromagnetic Redidattn cgCONSHIP Coptrol by Ship CLOS Command Line of Sight CONSHORE Control from Shore CLSM Crew Life Support Monitor r'ONSOL Long range radio aid to navigation CLweight Conventional Landing W,)ight CONUS Continental United States clwy Clearway CORA Coherent Radar Array CM Crewman: Cent;metre: Consumables Management: CORDS Coherent-on-Receive Doppler System Configuration Management; Cruise Missile: Counter Cos Change-Over Switch: Cutoff Signal Measures CMA Contact Making Ammeter COSAR Compression Scanning Array Radar COTAR Correlated Orientation Tracking & Rangirg System CMCB Composite-Modified Double Base Propellants COTAT Correlation Tracking and Triangulation CMG Control Moment Gyro COVER Cut-Off Velocity & Range CMM Condition Monitored Maintenance CP Communications Processor; Candle PowvoI: Centre of CrVIP Compound Helicopter Pressure; Concrete Piercing (Ammunition): Command Post; Change Proposal; Circular Polarized: Control CMU Compatibility Mockup Panel CMVM Contact-Making Voltmeter CPC Computer Program Component CN Compass North CPD Crew Passive Dosimeter CNEL Community Noise Equivalent Level CPE Circular Probable Error: Computer Peripheral CNI Communictions. Navigation, Identification Equipment C/No Carrier/Noise Spectral Density Ratio CPF Complete Power Failure CPFF Cost Plus Fixed Fee CNR Carboy Nitroso Rubber: Composite Noise Rating CPI Crash Position Indicator CNRA Composite Noise Rating (Aircraft) CPIF Cost Plus Incentive Fee CNR Composite Noise Rating CPILS Correlation Protected ILS c/o Cutoff: Checkout CPL Common Programming Language COAT Corrected Outside Air Temperature CPM Cycles Per Minute; Critical Path Method COC Combat Operations Centre CPR Compressor Pressure Ratio COCODE Compressed Coherency Detection (Radar Techiique) CPRV Cabin Pressure Relief Valve COCS Camera Override Control System CPS Cycles Per Second: Critical Path Schedule COD Carrier Onboard Delivery CPSF Candle Power/Square Foot COe“D Computer Deisng of Electronic Devices CPU Central Processing Unit (of a Computer) CODIC Computer-Directed Communications CR Compression Ratio: Combat Ready: Control Receiver; CODIPHAS. Coherent Digital Phased Array System Carriage Return: Change Request CODIS Controlled Digital Simulator CRAM Computerized Reliability Analysis Method: Card COED Computer Opereted Electronic Display Random Access Memory COFI Checkout and Fault Isolation CRC Control and Reporting Centre COFW Certification of Flight Worthiness CRD Controlled Release Device: Cosmic Ray Detector COG Course Made Good Over the Ground CRDF Cathode-Ray Direction Finder COGS Continuous Orbital Guidance System CRE Command Race: Corrosio,; Resistant COHO Coherent Pulse Oscillator CRES Corrosion Resistant Steel COl Communications Operation Instruction CRG Control Rate Gyro COIN Counter Insurgency CRO Cathode Ray Oscillograph: Cathode Ray Oscilloscope COM Computer-Output-Microfilm CROW Combined Rocket Warhead COMAfl Contour Mapping Radar System CRP Computer Reset Pulse COMAT Characteristics of Materials CRS Cold Rolled Steel COMGEN Common Specifications Statements Generator CAST Cathode Ray Storage Tube COMINT Communicaions Intelligence CRT Cathode-Ray Tube. Combat Readiness Training COM LINK Communications Link COMMAND Command Model for Analysis & Design CRTV Composite Re-Entry Test Vehicle COMPACT Computer Programmed Automatic Checkout & Test CRW Carrier Wave System cryog Cryogenic 837 crypto ABBREVIATIONS AND ACRONYMS crypto Cryptography CV CS Aircraft Carrier: Check Valve: Coefficient of Variaton Crew Station: Centistokes; Commercial Standards: CVA Aircraft Carrier. Attack Crypto Secure CVD Chemical Vapor Deposition CSC Cartridge Storage Case: Course and Speed CVE Controlled Visual Flight: Aircraft Carrier. Escort; Computer; Central Switching Concept Complex Vehicle Erector C/S Command System CVH Helicopter Aircraft Carrier Cs Cirrostratus CVHE Escort Carrier Helicopter CSC Cartridge Storage Case: Central Switching Concept CVL Aircraft Carrier. Light CSD Constant Speed Drive CVR Cockpit Voice Recorder CSDC Computer Signal Data Converter (F-14A) CVS ASW Aircraft Carrier: Continuous Vent System CVT Convertiplane CSE Common Support Equipment CVU Constan e CVUJ Constant Voltage Unit CSG Course and Speed Made Good Over the Ground Clockise: Carrier Wave: Chemical Warfare; csk Countersink Continuous Wave: Constant Wear CSL Console CW ACQ Continuous Wave Acquisition Radar CSM Combustion Stability Monitor; Close-Support (Radar) (or Mission; Command and Service Module CWAR) CSR Check Status Reply CWE Current Working Estimate: Caution an,' !arning Equipment CSS Cryogenic Storage System: Control Stick Steering CW ILL Continuous Wave Illumination Radar CSRM Controlled Solid Rocket Motors CWO Continuous Wave Oscillator CWOTCCentralusStandardilTime CST Central Standard Time CW Radar Continuous Wave Radar CSU Constant Speed Unit: Central Suppression Unit C&WS Caution & Warning System CT Component Test: Coefficient of Thrust; Control Transformer CWT Hundredweight C & T Communications and Tracking CWTD Continuous Wave Target Detection C/T Central Timing: Command Transmitter CWU Caution and Warning Unit CTA Compatibility Test Area: Component Test Area: CX Control Transmitter: Complex Control Area CXR Coaxial Contrarotating Rotor CTE Cable Termination Equipment: Central Timing CY Calendar Year; Cubic Yard Equipment: Component Test Equipment CYBORG Cybernetic Organism CTF Combined Task Force cyl Cylinder ctg Counting; Cartridge CZ Canal Zone: Combat Zone CTM Command to Measure. Cardiotachometer CTO Conventional Take-Off D C TO C Center to Center DA Doible Amplitude CTOL Conventional Take-Off and Landing DA Digtlt Anlue CTO Weight Conventional Take-Off Weight DA Disrte Addressuec CTP CoCnTf idenCcnei dTneest t PrroggrrmamDABS Discrete Address Beacon System CTR Certification Test Requirements DAC Digital to Anologlue) Computer; Digital to Analog Converter; Data Acquisition Camera CTS Contingency Transfer System: Certification Test DACOR Data Correlator CTSC Specification: Cosmic Top Secret Test Support DACS Digital Acquisition and Control System CTS ComtSpt TDAD Double Amplitude Displacement CTU Ce tl Tim U n SDADE Digital Ajquisition and Documentation Equipment CTU Central Timing Unit CTV Controlled Test Vehicle DAE Data Acquisition Equipment ctwt Counterweight DAEMON Data Adaptive Evaluator and Monitor CTZ Control Zone DAI Death from Accidental Injuries: Discrete Activity CU Control Unit Indicator Cu Cumulus DAIS Digital Airborne Information System cu ft Cubic Feet DALO Disconnect at Lift-Off cu in Cubic Inch DAMS Defense Against Missile Systems cu m Cubic Metre daN Decanawton cu mm Cubic Millimetre(s) DAP Diqital Auto-Pilot cu yd Cubic Yard DAOC Data Acquisition Center CUL Command Uplink: TWX-Call You Later DAR Deficiency Action Report CUPID Computer for Uprange Point-of-Impact Oetermination DARE DOVAP Automatic Reduction Equipment CUR Command Uplink Request DART Directional Automatic Realignment of Trajectory; CURFCOE Common Usage RF Checkout Equipment Decomposed Ammonia Radioisotope Thruster 838 ABBREVIATIONS AND ACRONYMS DIC DAS Data Automation System: Date Acquisition DEB Dispersed Emergency Base Subsystem; Digital Address System. Data dec Declitiation Automation Subsystem DECA Display/AGAP Electronic Control Assembly; Descent DASH Destroyer Anti-Submarine Helicopter: Drone Engine Control Assembly Anti-Submarine Helicopter DECM Defence Electronic Countermeasures System DAT Design At-ceptance Test DECO,.% Telemetty Decommutators: Decommutator DATAC Defense & Tactical Armament Control DECOR Digital Electronic Continuous Ranging DATAR Digital Automatic Tracking & Remoting DED Diesel Engine Driven DATICO Digital Automatic Tape Intelligence Check-Outut DEDA Data Entry & Display Assembly DATP Detailed Acceptance Test Procedure DEE Digital Events Evaluator. Digital Evaluation DATS Dynamic Accuracy Test Set: Detailed Acceptance Equipment Test Spe Lfication DEER Directional Explosive Echo Ranging DAU Data Acquisiticn Unit def Defence DAVC Delayed Automatic Volume Control DEFCON Deftnse Readiness Condition DAVID Defensn of Airborne Vehicles in Depth deg Degree DEL P Delta Pressure DAWG Dynamic Air War Game DEL V Delta Velocity DB Deadbard: Depth Bomb; Day Bombardment; Design Burst dem Demodulator db Decibel DEMON Demodulated Noise D/S Decimal to Binary DEP Departure, Deflection Probable Error DBB Detector Back Bias DE/Q Dasign Evaluation/Qualification DBCU Data Bus Control Unit des Descent dbl Double desig Designation dBM Decibel Meter dest Destruct dBW Decibels with respect to one watt DESYN De-Synchronize DC Data Centre; Damage Control. Depth Charge, Dual DEU Display Electronics Unit Capable. Display Console: Discrepancy Check. dev Development Direction Cosine DEW Distant Early Warning. Dewpoiit D/C Data Conversion DEWIZ Distant Early Warning Identification Zone d Direct Current DF Direct Flight: Development Flight. Direction Finder D&C Display and Control Drop Forge DCA Digital Command Assembly DFAW Direct Fire Anti-Tank Weapon DCC Damage Control Center: Display Control Console DFC Dual Feed Coupler dcdr Decoder DFI Development Flight Instrumentation DCIB Data Communication Buffer DFR Dual Frequency Received DCN Oefence Communication Network: Design Change DFRL Differential Relay Notice DFS Dynamic Flight Simulator DCP Disaster Control Plan DFT De-Aerating Feed Tank, Direct Flight Test; Design toCPS Dynamic Crew Procedures Simulator Feasibility Test DCS Data Control System. Digital Command System. DFTI Distance From Threshold Indicator Damage Control System DG Directional Gyro DCT Disaster Control Team DCTL Direct Coupled Transistor Logic DGBC Digital Geoballistic Computer DCU Digittl Control Unit DGU Directional Gyro Unit DD Deep Drawn, Department of Defense. Double Drift DH Decision Height DDA Digital Differential Analyzer; Differential Digital DHC Data Handing Center Analysis DHDD Digital High Definition Display DDAS Digital Data Acquisition System DHE Data Handling Equipment DDCS Digital Data Calibration System DHP Developed Horsepower DDD Digital Display Driver; Detail Data Display (F-14A) DHSS Data Handling Sub-System DDM Difference in Depth of Modulation DDRS Digital Data Recording System DI Discrete Input: bemand Indicator: De-Icing; Direction Indicator DDS Data Display System: Deployable Defence System dia Diameter DDT Digital Demodulation Techniques DE Direct Encounter, Display Electronics, Descent Engine. Deflection Error. Design Engineering DIAN Decca Integrated Airborne Navigation System DEA Display Electronics Assemblies DIANE Digital Integrated Attack & Navigation Equipment deact Deactivation DIC Data Insertion Converter 839 DICBM ABBREVIATIONS AND ACRONYMS DICBM Defence Intercontinental Ballistic Missile DPF Differential Pressure Feedback DICORAP Directional Controlled Rocket Assisted Projectile DP Hardness Depth of Penetration Hardness DIDS Digital Information Display System dpl Dipole DIFAR Directional Frequency Analysis and Recording DPLCS Digital Propellant Level Control System DIGACC Digital Guidance and Control Computer dply Deploy DPM Disintegration Per Minute; Dual Purpose Missile DIGCOM Digital Compunite DPR Depolymerized Rubber DIGICOM Digital Communcations System DPS Data Processing System; Descent Power System; DIGITAC Digital Tactical Automatic Control Data Processing Standards; Descent Propulsion DIGS Delta Inertial Guidance System System DILS Doppler-Inertial-Loran System DP&S Data Processing & Software DIMAMS Digital Integrated Multiplexed Armament DPST Double Pole Single Throw Management System DP SW Double Pole Switch DIMUS Digital Multibeam Steering DPU Design Proof Unit DIN Digital Input DRi Data Receiver; Data Reduction; Degrees Rankine; Demolition Rocket; Discrepancy Report; Discrepancy DIOI Digital Input/Output Interface Record DIRCOL Direction Cosine Linkage D/R Dead reckoning; Down range: Data Receiver DIU Digital Interface Unit DRA Dead Reckoning Analyzer dkm Decametre DRADS Degradation of Radar Defense Systems DXA DL Down Link; Data Link DRC Data Reduction Center DLC Dynamic Load Characteristics; Direct Lift Control DRED Data Router and Error Detection DL&E Design Limit and Endurance DREG Data Regulations DLG Destroyer Leader Guided Missiles drg Drogue DLK Data Link DRI Descent Rate Indicator; Dynamic Response Index DLS DMF-Based Landing System DRID Direct Readout Image Dissector dlvd Delivered DRIFT Dynamic Reliability Instantaneous Forecasting DM Decimeter; Dummy Missile Technique DMA Direct Memorl Access DRIR Direct Readout Infrared DRM Data Recording Management; Design Reference DME Distance Measuring Equipment Model DMEC DME on C-Band Drone Drone Defined as a pilotless flight vehicle automatically DMIRR Demard 'Aode Integral Rocket Ramjet controlled and recoverable dml Demolition DROS Direct Readout Satellite DMLS Doppler MLS DRS Data Reauirements Specification; Data Receiving dmn Dimension; Dimensional Station; Data Reduction System DMPI Desired Mean Point of Impact DRSS Data Relay Satellite System DMR Defective Materiel Report DRUL Downrange Up Link DmZ Demilitarized Zone DRW Defensive Radio Warfare DMU Dual Purpose Maneuvering Unit DS Data Sheet; Direct Support; Descent Stage dnr Downrange DSAP Data Systems Automation Program DNS Doppler Navigation System DSAR Data Sampling Automatic Receiver DO Draw Out; Discrete Output DSB Double Sideband D/O Drop Out DSC Dynamic Standby Compu;ur DOB Dispersion Operational Base, Depth of Burst DSCC Deep Space Communications Complex DOC Direct Operating Cost dscrm Discrominatiun DOD Department of Defense DSCS Defence Satellite Communications System DOF Direction of Flight; Degree(s) of Freedom DSE Data Storage Equipment DOI Descent Orbit Insertion DSEA Data Storage Eiectronics Assembly DOM Data Output Multiplexer DSI Data Submitted Information DDOOPULSOERC Doppler and Lock Doppler Unbed S h RDSIF Deep Space Instrumentation Facility DOUSER Doppler Unbeamed Search Radar DOVAP Doppler Velocity & Position dsky Display Keyboard UP Double Poln; Diametial Pitch; Dual Purpose DSM Digital Simulation Model. Digital Select Module DPC Data Processing Control; Oata Processing Center DSN Deep Space Network DPDM Double Pulse Duration Modulation dsnt Descent DPDT Double-Pole Double-Throw DSS Deep Space Station; Digital Storage Subsystem DPE Data Processing Equipment DSU Direct Support (Supply) Unit 840 ABBREVIATIONS AND ACRONYMS EFSSS D system The double-drift method of determining wind E/C Environmental Chamber j, direction ECA Electronic Control Assembly DT Delayed Time; Dispersion Time; Displacement ECAN Electronic Calibration and Normalizaton Transducer; Drop Tank ECC Engineering Critical Component DTA Differential Thermal Analysis ECCM Electronic Counter.Counter-Measures DTAS Digital Transmission and Switching System ECD Entry Corridor Display; Estimated Completion Date DTC Data Transmission Center ECE Electrical Checkout Equipment DTE Data Transmission Equipment; Digital Television ECF Electrically Conductive Film Equipment ECG Electrocardiograph; Effective Center of Gravity DTF Data Transmission Feature ECI Electrical Circuit Interrupter DTL Diode.Transistor Lotfic ECID Enroute Computer Identification DTMS Digital Test Monitoring System ECL Equipment Component List DTO Detailed Test Objective ECLSS Environmental Control Lift Support Subsystem DTP Detailed Test Plan ECM Electronic Counter-Measures: Engine Condition Digtale Tet Recrde Monitoring DTR Digital Tape Recorder ECO Engine Cutofl: Electron Coupled Oscillator DTRM Double (or Dual) Thrust Rocket Motor ECOM E'ectronic Commaid OTS Data Transmission System ECP Engineering Change Proposal DT/TM Delayed Time/Telemetry ECS Environmental Control System; Experimental Communications Satellite (NASA); Engine Control DTU Data Transmission Unit System DTV Dynamic Test Vehicle ECT Evans Clean Flow Tunnel. Engine Cutoff Timer DU Display Unit; Distribution Unit ECU Environmental Control Unit DUA Digital Uplink Assembly ED Explosive Devices OV Direct Valve: Differential Velocity: Direct Vision; EDA Electronic Digital Analyzer Digital Video; Delta Velocity EDS Emergency Dispersal Bases DVD Delta Velocity Display EDC Error Detection and Correction: Estimated Date o! DVFR Defense Visual Flight Rules Completion OVeR Doppler VOR EDD Estimate Delivery Date DVM Digital Voltmeter EDITAR Electronic Digital Tracking and Ranging DVT Design Verification Testing EDM Electrical Discharge Machining; Electric Drive dvtl Dovetail Mechanism dwg Drawing EOP Emergency Defence Plan; Electronic Data Processing dwn Down EDPE Electronic Data Processing Equipment dyn Dynamic EDPM Electronic Data Processing Machine dyno Dynamometer EDPS Electronic Data Processing Systeon DZ Drop Zone EDR Equivalent Direct Radiation EDS Emergency Detection System; Explosive Device E System; Error Detection System E Modulus of Elasticity EECOM Electrical, Environment.-l, and Communications FA Experiment Assembly; Enemy Aircraft. Earphone EEG Electroencephalograph Amplifier EED Electro-Explosive Device EADI Electronic Attitude Director Indicator EEl Electrical & Electromagnetic Interference: Essent:al EAGLE Elevation Angle Guidance Landing Equipment Element of Information EAL Estimated Average Life EEM Earth Entry Module; Effective Explosive Method. EAR Electronically Agile Radar Engin~ering Evaluation Model EAS Equivalent Airspeed; Estimated Airspeed EEOED Emergency Earth Orbital Escape Device EASE Electrical Automatic Support Equipment EER Explosive Echo Ranging EAT Expected Approach Time EES Electronic Emission Securitq EAX Electronic Automatic Exchange EET EqJivalent Exposure Time EB Electron Beam: Equ,)ment Bay EF Elevation Finder; Emitter Follower Es Control External Burning Control EFAS Electronic Flash Approach System EBF Externally Blown Flaps EFH Earth Far Horizon EBIV Electron Beam Mode Dischargo EFL Equivalent Focal Length EBS Emergency Broadcasting System; Elecro, EFC Equipment Functional Check Bombardment SF Euimet untina Cec ES (Welding) Electron Beam Welding) EFPD Effective Full Power Days EC Environmental Chamber. Environmental Control EFSSS Engine Failure Sensing and Shutdown System 841 I EGADS ABBREVIATIONS AND ACRONYMS EGADS Electronic Ground Automatic Destruct System EMU Extravehicular Maneuvering Unit EGECON Electronic-Geographic Coordinate Navigation System EMV Electromagnetic Velocity EGIL Environmental. General Instrumentation. Life Support ENCOMS Engine Control Monitoring System EGMT Elapsed Greenwich Mean Time ENH Earth Near Horizon EGRESS Emergency Global Rescue. Escape & Survival ENR Effective Noise Resistance Systems ENT Exhaust Nozzle Temperature EGSE Electrical Ground Support Equipment env Envelope EGT Exhaust Gas Temperature envr Environmental EGV Exit Guide Vane EO Earth Orbit: Electro-Optica E-H Electro-Hydreuic EOD Explosive Ordnance Disijsal EHA Electrical Harness Assembly EOG Electro-Oculograph EOI EHD Earth Orbit Insertion Elactrohydrodynamics: Electrohydrodynamic Power Generation EOL Earth Orbt Launch EHF Extremely High Frequency EOLM Electro-Optical Light Modulator EHM Engine Heallh Montorng EOM Earth Orbital Mission: End of Mission EOMA Emergency Oxygen Mask Assembly EHP Electric Horsepower EOP Emergency Oxygen Pack EHT Extra High Tension EOPF End of Powered Flight EHV Extra High Voltage EOR Earth Orbit Rendezvous: Electro-Optical Research; El Emission Index; Electronic Interface Explosivo Ordnance Reconnaissance EIRP Effective Isotopic Radiated Power; Effective EOS Earth Observation Satellite (NASA); Emergency Instantaneous Radiated Power Oxygen System; Earth-to-Orbit Shuttle; Equation of EKG Electrocardiograph State elec Electric EOSS Earth Orbiting Space Stations electr Electronics; Electrolyte EOT End of Tape ELF Extremely Low Frequency EP PElxapnlnoisniogn: Proof: Electrical Power: Emergency Emergency Preparedness; Experiment ELINT Electromagnetic Intelligence; Electronic Intelligence Package ELME Emitter Location Method EPA Earth's Polar Axis ELS Earth Landing System EPC External Pilot Check ELSA Environmental Life Spport Assembly EPCO Emergency Power Cutoff ELSE Electrical Launch Support Equipment EPD F:ectroric Proximity Detector ELSIE Emergency Life Saving Instant Exit System EPD&C Electrical Power Distribution and Control ELSS Environmental Life Support System: Extravehicular EPDCS Electrical Power Distribution and Control System Life Support System EPDS Electrical Power Distribution System ELSSE Electronic Sky Screen Equipment EPE Electronic Parts and Equipment ELT Emergency Locator Transmitters EPIC Electronic Properties liformation Center ELV Earth Launch Vehicle EPL Emergency Power Level EM Erasable Memory. Electromagnetic EPNL Effective Perceived Noise Level EMB Experimental Model Basin EPO Earth Ptking Orbit EMC Electromagnetic Compatibility EPR Engine Pressure Ratio: Essential Performance EMD Entry Moinitor Display; Engine Management Display Requirements EME Environmental Measurement Experiment EPS Electrical Power System emer Emergency EPU Electrical Powe; Unit EMF Electromotive Forco EPUT Events Per Unit Time EMG Electromyograph E/Q Energy per unit charge EMGE Electronic Maintenance Ground Equipment ER Emergency Rescue EMI Electromagnetic Interference ERASER Elevated Radiation-Seeking Rocket EMIRB Emergency Position Indicating Beacon ERBM Extended-Range Ballistic Missile EML Equipment Modification List EMM Electromechanical Mockup ERFDP Earth Resources Flight Data Processor EMP Electromagnetic Pulse erg Electroretinograph; Unic of work or energy EMPIRB Emergency Position Indicating Radio Beacon ERGS Earth Geodetic Satellite (USAF) EMR Engine Mixture Ratio ERM Earth Return Module Ef.ISS Emergency Mission Support; Experimental Man ERMA Expansion Rate Measuring Apparatus Space Station EROS Earth Resources Observation Satellite. Earth EMT Electrical Mate Test Resources Observation System EMTIF Equivalent Mea, Time to Failure EROWS Expendable Remote Operating Weather Station 842 ABBREVIATIONS AND ACRONYMS FDB ERP Effective Radiated Power; Eye Reference Point F/A Field Activities; Fuel/Air; Forward/Aft ERS Earth Recovery Subsystem; Earth Resources FAA Federal Aviation Agency Satellite; Emergency Relocation Site: Equipment FAAR Forward Area Alerting Radar Record System FAB Aeronautical Broadcast Station ERT Extended Range Telescope FAC Forward Air Controller FRTS Earth Resources Technology Satellite FACt First Article Configuration Inspection ERU Earth Rate Unit (15 DegreesVHour) FACP Forward Air Control Post cy; Explosive Safe Area FACT Flight Acceptance Compcsite Test: Flexible ESA European Space Agenc Automatic Circuit Tester esc Escape FAE Fuel Air Explosives; Final Approach Equipment ESE Electrical Support Equipment; Electronic Support FAF Final Approach Fix Equipment FAGC Fast Automatic Gain Control ESG Electrically Suspended Gyro FAI F;rst Aricle Inspection; Flight Anomaly investigation ESHP Equivalent Shaft HorsepowerFAFnihl Oe ESI Electronic System Integration FAP Flight Acceptance proile ESM Electronic Support Measures; Electronic Warfare FAQ Fair Average Quality Support Measures FAR Fuel-Air Ratio: Federal Aviatn Regulation ESMR Electrically Scanning Microwave Radiometer FARC Fast Accurate RefraCtion Correction ESMU Electronic Systems Mockup FASTAR Frequency Angle Scanning Tracking & Ranging ESP Engine Service Platform: Extravehicular Support FAT Factory Acceptance Test PackageFAFatrAcetneTs PEctrn SFAWS Flight Advisory Weather Service ESR Electron Spin Resonance FAX Facsimile Transmission; Fuel Air Explosives: ESS Experiment Support System Aeronautical Fixed Station ESSA Environmental Survey Satellite FB Fuse Block; Fighter Bomber ESV Emergency Shutoff Valve: Earth Satellite Vehicle FBA Fighter Bomber Aircraft ESWS Earth Satellite Weapon Systems F B/A Fighter Bomber Attack E/T Escape Tower FBH Front Bearing Housing ETA Estimated Time of Acquisition: Estimated Time of FBRL Final Bomo Release Line Arrival FBV Fuel Bleed Valve ETC Estimated Time of Completion; Earth Terrain Camera FBW Fly By Wire ETD Electrical Terminal Distribution: Estimated Time of FC Fighter Controller: Firing Console. Fire Control: Fght Departure Control: Flight Controller: Fuel Cell ETG Electrical Thermal Generators FCA Frequency Control Analysis: Field Change Analysis ETHO Ethylene Oxide FCC Fght Control Computer ETO Estimate Takeoff FCE Fire Control Equipment:r tFlight Crew Equipme ETV Engineering Test Vehicle FCI Fuel Cell EUV Extreme Ultraviolet FCM Flght Combustion Monitor eV Electron Volt FCMD Fire Command EV Extravehicular: Explosive Valve FCMS Fight Crew Mission Simulator EVA Extravehicular Activity FCO Functional Checkout: Fire Control Operation EVM Evacuation Mission: Earth Viewing Module FCOC Fuel Cooled Oil Cooler EVS Extravehicular System FCOS Flght Computer Operaung System: Flght ContrOl EVSS Fxtravehicular Space Suit Operatg System EVT Extrave -ular Transfer: Effective Visual Trapsmission FCP Forward Command Post: Fuel Cell Power Plant EW Electronic Warfare; Early Warning FCPPS Fuel Cell Power Plant System EWAD Early Warning Air Defence FCR Fue Coerl ystr EWASER Electromagnetic Wave Amplification by Simulated FCR Fire Control Radar Emission of Radiation FCS Fire Control System: Flight Control System EWR Early Warning Radar FCT Flight Crew Trainer; Fraction Thereof Pxt Extinguish. Extend; External FCU Fuel Consumption Unit EZ Electrical Zero FCZ Forward Combat Zone F FD Frequency Distribution: Flight Director F/D Full Duplex F Fahrenheit F&D Fill and Drain I Frequency FDA Fault Detection & Annunciation FA Failure Analysis: Fighter Alert: Field Artillery; FDAI FIght Director Attitude Indicate, Friendly Aircraft; Aeronautical Station: Fully Automatic FOB Fahrenheit Dry Bulb 843 FDC ABBREVIATIONS AND ACRONYMS FDC Fire Direction Centre FLEA Flux Logic Element Array FD & E Fire Detection & Extinguishing System FLI Flight Leader Identification FDI Flight Director Indicator FLIP Flight Launched Infrared Probe; Flight Information Plans: Floating Instrument Platform FDIIR Fault Detection. Isolation. Identification & FLIR Forward Looking Infrared Recompensation FLM Flight Line Maintenance FDM Frequency Division Multiplex FLOS Fixed Line of Sight FDP Forward Defence Post: Flight Data Processing FLOX Fluorine-Liquid Oxygen FDR Feeder: Flight Data Recorder FLR Forward Looking Radar F DR Fire Door FM Field Maintenance; Frequency Modulation; FDRI Flight Director Rate Indicator Flowmeter: Frequency-Modulated FOS Fluid Distnbution System; Flare Detection System FMA Failure Mode Analysis; Forward Maintenance Area FDSU Flight Data Storage Unit FMC Forward Motion Compensation FMCW Frequency Modulated Continuous Wave FEA Failures Effects Analysis FME Field Maintenance Equipment FEAT Final Engineering Acceptane TestFMFilManencEuimt FMEA Failure Mode & Effects Analysis FEB Flying Evaluation Board FEBA Forward Edtof Barea FMFB Frequency Modulation with Feedback FEBA Forward Edge of Settle Area FMICW Frequency-Modulated Interrupted Continuous Wave FEBS Functional Electronic Blocks FM Radar Frequency Modulated Radar F/Eng Flght Engineer FMS Force Measuring System FEP Front End Processor FMU Functional Mockup FES Fine Error Sensor FMX FM Transmitter FET Field Erect Transistors FNH Flashless. Non-Hygroscopic FF Flip-Flop; Folding Fin FFAR Forward Firing Aircraft Rocket Folding-Fin Aircraft FNP Fusion Point Rocket FO Fuel Oil; Fail Operational FFC Final Flight Certification F/O Fuel-to-Oxidizer FFD Functional Flow Diagram FOBS F-actional Orbit Bombardment System FFI Fuel Flow Indicator FOD Foreign Object Damage FFR rree Flight Racket FO/FS Fail Operational/Fail Safe FFT Fast Fourier Transform FOM Figure of Merit FFTV Free Fl-ght Test Vehicle FOV Field of View FGA Fighter Grnund Attack FPA Flight Path Angle FH Flat Head CPB Fuel Preburner FHF First Horizontal Flight FPI Fuel Pressure Indicator FHP Friction Hcrsopower FPIS Forward Propagation Ionospheric Scatter FI Fighter Interceptor FPM Feet Pir Minute F/I Field Intensity fprf Fireproof FIC Flight Information Centre: Frequency interference FPTS Forward Propagation Tropospheric Scatter Control FR Flight Refuelling FIDO Fog, Intensive. Disposal of; Fog Intensive Dispersal FRAP Fire Rescue Air Pack Organization FRD Failure Rate Data; Flight Readiness Demonstration FIFO First In First Out FREDI Flight Range and Endurance Data Indicator FIMATE Factory-Installed Maintenance Automatic Test FRESCANNAR Frequency Scan Radar Equipment FRM Freuenc S a tr FIP Fuel Injection Pressure FRM Fibre Reinforced Materials FIR Flight Information Region FRP Fibre Renforced Plastic; Fiberglass Reinforced FIREX Fire Extinguishing System Plastics FIS Flight Information Sen-ice FIST Fault Isolation by Semiautomatic Technioues, Field FSC Forward Scatter Intelligence Simulation Test FSD Fuel Supiply Depot FK Faker Track FSK Frequency Shift Key: Frequency Shift Keying FL Full Lift: Fluid: Fuel: Flashing Light. Flight Levels: P-SN Federal Stock Number Focal Length: Flame Focl Len; Fl ent FSR Field Service Report; Final System Run F/L Full Load: Flight Lieutenant FLAR Forward Looking Airborne Radar FSS Fine Sun Sensor: Forward Scatter System FLARE Flight Anomalies Reporting FST Forged Steel FLB Flight Line Bunker FSTV Full Sca'- Test Vehicle FLC Flight Crew FSU Full Scale Unit 844 GIN ABBREVIATIONS AND ACRONYMS Fr boGC Gigacycls 1100 Mega Cycles: Great Circle: Gimbal FT Firing T~ble; Flow Transformer Case; Guidance Computer FTA Flight Test Article G & C Guidance and Contfol FTC Fast Time Constant GCA Ground Control Approach; Ground Controlled foot-Candle Approach '. FT.C oo-ndeg-cal Gram-Calorie FTE Factory Test Equipment gcLGa.a~i FTE Fligt Test Enqtpmenttn G & CC Guidance and Control Coupler FTIFght Test Instrumentation GCD Greatest Common Divisor FTIS Fogt Te rt GCI Ground Control Interceptor Foot-Lambert GCL Ground Controlled Landing FTM Flight Test Missilo GCO Guidance Cut-Off FtMmn Feet Per Min1.te GCR Ground Controlled Radar FTO Functional Test Objective GCS Ground Communications System FTP Fixed Throttle Point: Functional Test Procedure- Full GCSC Guidance Control and Sequencing Computer Throttle Position GCT Greenwich Civil Time FTS Frequency & Timing Subsystem: Flight Telemetry GCTA Ground Controlled Televi- -emblv Subsystem; Functional Test Specification GCTS Ground Communications Tr.– System Ft/Sec Feet Per Second GCU Generator Control Unit: Gyro Coupling Unit FTU Flight Test Unit: Fuel Transfer Unit GDA Gun-Defended Area: Gimbal Drive Assembly * FTV Flight Television GDC Gyro Display Coupler FU Firing Unit: Forecast Upper Air GDHS Ground Data Handling System FUS Far Ultraviolet Spectrometer Ge Germanium FVF First Vertical Flight G & E Ground & Environmental FW Aircraft Fixed Wing Aircraft GECO Guidance Engine Cut-Off FWA Fahrenheit Wet Bulb Gee A medium-distance radio navigation system or aid FWD Forward GEJ Gaseous Ejection FWHM Full Width at Half Maximum GEM Ground Effect Machine FWR Full Wave Rectifier GEOREF tWortd) Geographic Reference System FWS Filter Wedge Spectrometer GEOS Geodetic Earth Orbiting Satellite (NASA); FWT Fair Wear and Tear Geostationry EarthOrbitiig Satellite (ESRO) FWTT Fixed Wing Tactical Transport GET Ground Elapsed Time Facsimile GETI Ground Elapsed Time of Ignition fX GETOL Ground Effect Take-Off and Landing GEV Ground Effect Vehicle G GeV Gigaelectron Volts G (metallurgy) A fracture toughness paramet - derived from tensile GFA Gun Fire Area tests on pre-cracked specimeib. GFAE Government Furnished Aircraft Equipment Acceleration due to gw1vity (often G in aerospace GFC Gas Filter Correlation g ~ ~~meGdraimcGinoeene)t;F msdEupet GA Gage: Gimbal Angle: Glide Angle; General Alert: GFE Government Furnished Equipment Ground Attack GFM Government Furnished Material g/e Glide Angle GFP Government Furnished Property G & G General & Administrative Overhead GFR Gap-Flled Radar Glass Fiber Reinforced GAINS Gimballess Anilytic Inertial Navigation System GFST Ground FJel Start Tank GAMMA 105 Gauss GFY Glider Flying gal Gallon(s); Galactic GGR Ground Gunnery Range GAM Ground-to-Air Missile: Guided Aircraft Missile GGS Aircraft Gaseous System; Gyro Gunght GAPA Ground to Air Pilotless Aircraft GAR Gv d Aircraft Rocket GGSE Gravity Gradient Stabilization Experiment GASER Gan,37.a-Ray Laser GHA Greenwich Hour Angle GAS GEN Gas Generator GHE Ground Handling Equipment GASP Global Atmospherc Sampling Program GHO General Headquarters GAT Ground/Air Transmitter: General Air Traffic: GHz Gigaherm Greenwich Apparent Time GI Government Issue GB Glide Bomb GIDEP Government Industry Data Exchange Program GBL Government B l of Lading GIMU Gimbelless Inertial Measuring Unit GBR Gun Bomb Rocket GNGimballed integral Nozzle GBS Gas Bearing System. Gas Bio-Assay System GIN 846 GIRLS ABBREVIATIONS AND ACRONYMS GIRLS Generalized Information Retrieval & Listing System: GPIP Glide-Path Intercept Point General Indexing in Reciprocal Lattice Space GPIR General Photographic Interpretation Report GL Gimbal Limit: Gun Laying (Radar) GPL Geographic Position Locator GLARE Ground-Level Attack. Reconnaissance and Electronic GPM Gallons Per Minute Countermeasures GPR General Purpose Radar GLO Ground Liaison Officer GPS Global Positioning System. the U S. NAVSTAR GLOM Gross Lift-Off Mass satellite navigation system: Gallons Per Second GLOPAC Gyroscopic Low-Power Attitude Control GPSS General Process Simulation System GLOTRAC Global Tracking (Uprange Sybtems) GPWS Ground Proximity Warning System GLOW Gross Lift-Off Weight GQA Government Quality Assurance GLT Guide Light GR Grade: Grain. General Reconnaissance: Gunnery gly Glycol Range: Gamma Ray Spectrometer GM Greenwich Meridian: Guided Missile: Geiger-Mueller GRASP Generalized Reentry Application Simulation Program (Tube) GRM Global Range Missile GMA Gas Metal Arc GRP Ground Relay Panel: Glass Reinforced Plastic GMC Grund Movement Control GRT Gross Registered Tons GMCM Guided Missile Countermeasure GRWT Gross Weight GME~M~Wo uteiGEGemcrboali c GME Gimbal Mounted Electronics GS Ground Station. Ground Speed G-METRE Gram-Metre G/S Gravity Per Second GMR Ground Mapping Radar Ground pr Con GMS Ground Maintenance Support GSCU GMT Greenwich Mean Time GSE Ground Support Equipment: Geocentric Solar Ecliptic (Coordinate System) G & N Guidance and Navigation GNC Guidance and Navigation Computer gskt Gasket GN&C Guidance. Navigation and Control GSM Ganeral Situation Map: Geocentric Solar GNCS Guidance. Navigation and Control System GSP Gudance Signal Processor gnd Grgonu nd rudGSP- Guidance Signal Processor-Rpae GNE Guidance and Navigation Electronics GSP-R Guidance Signal Processor-Repeater GNP Gross National Product GSR Galavanic Skin Response G & NS Guidaince and Navigation System GSS Global Surveillance System, Grouno Support GNT Ground Test Systems GOAL Ground Operations Aerospace Language GSSC Ground Support Simulation Computer GST General Service Test: Graenwich Sidereal Time: GOAS Guidance Optical Algnment Shelter Ground Sensor Terminal GOCO Government Owned. Contractor Operated GSV Guided Space Vehicle GOE Ground Operational Equipment GOES Geostationary Operational Environmental Satellite GT Ground Transmit GOGO Government Owned. Government Operated GTA Ground Test Article, Gas Tungsten Arc GOR General Operational Requirements GTC Gain Time Control GOS General Operating Specification GTD Gas Turbine Density gov Governor GTE Ground Transport Equipment govt Government GTG Gas Turoine Generator GOX Gaseous Oxygen GTM Ground Test Missile GP General Purpose: Geographic Position, Glide -ath: GTO Gate Turn-Off Galactic Probe G-P Gas Persistent GTOW Gross Take-Off Weight GPAS General Purpose Airborne Simulator GTP General Test Plan GPATS General Purpose Automatic Test System GTS Gimbal Trim System; Gas Turbine Starter GP Bomb General Purpose Bomb GTV Ground Test Vehicle. (3uided Test Vehicle GPC General Purpose Computer GTW Gross Take-Off Weight GPD Gimbal Position Display; Ghllons Per Day gv Gigavolt GPES Ground Proximity Extraction System GVHRR Geosynchronous ,/ry High Resolution Radiometer gpf Gasproof GVST (Deceleration Units of) Gravity Versus Time GPG Grains Per Gallon GVSV (Deceleration Units of) Gravity Versus Velocity GPH Gallons Per Hour GVT Ground Vibration Test GPI Gimbal Position Indicator: Glide Path Indicatr;G Ground Point of Intercept, Ground Positi.', Ilidicator: GW Grid Wind: Ground Waves: Guded Weapon General Purpose Inverter GZ Ground 7 ro 846 ABBREVIATIONS AND ACRONYMS HIHAT H HEAP High Explosive Armor Piercing HEAR Human Error Action Report H Horizontal; 'Heavy' in combinations only. 'Helicopter H in airciaft designations HEAT High Explosive, Anti-Tank HA Herbane: High Altitude; Hour Angle HED High Energy Detector H/A Hazardous Area HEF High Energy Forming; High Energy Fuel HEI High Energy Ignition: High Explosive Incendiary HAA High Altitude Above; Heavy Anti-Aircraft Artillery. Height Above Airport HEISD High Explosive. Incendiary Self-destructed i MichaelBeijer (talk)HAAWHe avy Anti-Tank Assault WeaponHEa)eicpr HEIWT High Explosive Incendiary with Tracer HAB Horizontal Assembly Building; High Altitude Bombing HEL(a) Helicopter lit-LIOS Heteropowered Earth-Launched InterOrbital HABS High Altitude Bomb Sight Spacecraft HAD Heat Actuated Device HELIPATH Helicopter Position and Terrain Height HADES Hypersonic Air Data Entry System; Hypersonic Air helo Helicopter Density Entry System H engine An Internal-Combustion. Piston Engine HALCON High Altitude Long-Focus Convergent Mapping HEOS Highly Eccentric Orbiting Satellite; Highly Elliptical System Oibit Satellite IH and V Heating and Ventilation HEP High Explosive Plastic HAO High Altitude Observatory HEPA High Efficiency Particulate Air HAOSS High Altitude Orbital Space Station HERF High Energy Rate Forming HAP Hyroxylamine Perchlorate: High'Altitude Platform HERO Hazards of Electromagnetic Radiation to Ordnance HARA High Altitude Radar Altimeter Antenna HESD High Explosive Self-Destroying HARCO Hyperbolic Area Coverage HESH High Explosive, Squash Head (Ammunition) HARP High Altitude Research Program HESSES High Energy Squib Simulators HASP High Altitude Sampling Plane; High Altitude HETS High Energy Telescope System: High Environment Sounding Projectile Test System; Hyper-Environmental Test System HAST Hgh Altitude Supersonic Target hex Hexagon: Heat Exchanger HAT Height Above Touchdown H/EX Heat Exchanger HATS High Altitude Terrain Contour Data Sensor: HF Hold Fire; High Frequency; Height Finding; H/F Helicopter Attack System (abbr.) hav Haversine H/F Height Finder Radar; Human Factors HAW Heavy Assault Weapon H.F High-Altitude Fighter HB Heavy Bomber; Heavy Bombardment. High Band HFAS High Frequency Antenna System HBGM Hypersonic Boost-Glide Missile HFDF High Frequency Direction-Finder HBN Hazard Beacon HFRA High Frequency Recovery Antenna HBR High Bit Rate HF/SSB High Frequency Single Side Band HBW High Bridgewire;- High Speed Black and White Film HFT Horizontal Flight Testing HC Hand Control: Hexachlorochrome. High Capacity HFX High Frequency Transceiver Bomb: High Carbon H/C© HelicopterHGanGerto H/CFc) Haenpe CmaHGA High Gain Antenna: Heat Generator Assembly HCF Hardened Compacted Fiber h bH m goi HCL Horizontal Centre Line hgb Hemoglobin HCMR Heat Capacity Mapping Radiometer HGDS Hazardous Gas Detection Systems HCRO High Cross Range Orbiter hgr Hangar HCS Hydromechanical Control System I Carbon Steel HGRF Hot Gas Radiating Facility HCU Hydraulic Cycling Unit hgt Height HD Head(ing): Density Altitudo HH Handhole: Homing Head H & D Hardened and Dispersed HDA High Density Acid hi High hdbk Handbook HIAD Handbook of Instructions for Aircraft Designers HDD High Density Data; Head-Down Display HI ALT High Altitude HDF High-Frequency Direction-Finding Station HIC Humidity Indicator Controller HDI Horizon Flight-Direction Indicator HICAT High Altitude Clear Air Turbulence HDRSS High Data Rate Storage System HIDE High-Absorption Integrated Defense Electromagnetic hdw Hardware Warfare System HE Heavy Equipment: Handling Equipment; Human HIG High Integrating Gyroscope: Hermetically Sealed Engineering; High Explosive Integrating Gyro H/E Heat Exchanger HIHAT High Resolution Hemispherical Reflector Antenna HEAO High Energy Astronomy Observatory Technique 847 HIPAR ABBREVIATIONS AND ACRONYMS HIPAR High Power Acquisition Radar HPU Hydraulic Pumping Unit; Hydraulic Power Unit HIPERNAG High Performance Navigation System HQ Headquarters HIPERNAS High Performance Navigetion System HR Hot Photo-Intelligence Report: High Resolution: Hour HIPERTHINO High Performance Throttleable Injector HRE Hypersonic Research Engine HIPIR High Power Illumination Radar HRF High Rate of Fire HIPR High Pressure HRI Height-Range Indicator HRIR High Resolution Infrared Radiometer HI PR High Pressure HRIRS High-Resolution Integrated Radiation Sounder HIR Hydrostatic Impact Rocket HRP Human Reliability Program HIRAN Hi-Precision Short Range Electronic Navigation HRS Hot Rolled Steel System hrs Hours HIRD High Intensity Radiation Device HRT High Resolution Tracker HIRES Hypersonic In-Flight Refueling System HRV Hypersonic Research Vehicle HIRL High-Intensity Runway Ughts HS Heat Sink: Hat Shield: High Speed HISAM Surface-to-Air Missile 'High' H/S Heat Shield HISP High Integrity Signal Processor H-S Horizon Scanner HIVAC High Value Assest Control System HSB Helmet Stowage Bag HIVDC High Voltage Direct Current HSD High Speed Data: Horizontal Situation Display HIVOS High-Vacuum Orbital Simulator HSDL High Speed Data Line H/K Hunter Killer HSGT High Speed Ground Transportation HL Horizontal Landing: High Low: High Level HSI Horizontal Situation Indicator; Heat Stress Index of HLH Heavy Lift Helicopter Belding and Hatch: High Speed Interferometer hm Hectometre HSM High Speed Memory HMG Heavy Machine Gun HSP High Speed Printer HMS Hazards Monitoring System; Helmet Mounted Sight HSR High Speed Reader hngr Hangar HSS High Speed Steel HNL Hourly Noise Level HT Height: Heat: High Tension: Homing Type H/O Hard over H & T Handling and Transportation HOB Height of Burst HTA Heavier than Air HOBS High Orbital Bombardment System htg Heating HOGE Hover Out-of-Ground Effect HTO Horizontal Take-Off HOJ Home on Jamming HTOHL Horizontal Take-Off. Horizontal Landing HOL Higher Order Language HTPB Hydroxy-Terminated Polybutadiene HOR Heliocentric Orbit Rendezvous HTS High-Tensile Steel HORSE Hydrofoil Operated Rocket Submarine HT TR Heat-Tret(ed)(ment) HP High Power: Horsepower: High Pressure: Horizontal HTTS Hydromuench Thrust Termination System Po;arization HTV Hypersonic Test Vehicle HPA High Power Amplifier HTXGR Heat Exchanger HPAG High Performance Air-to-Ground HUD Head-Up Display HP High Pressure Compressor HUD/WAC Head-Up Display Weapon Aiming 'omputer H.oPm-pDrHesAsoor HHHUDWAS HP-DHA High Purity Dual Hardness Armor Head-Up Display and Weapon-Aiming System HPEW High Powered Early Warning HUFF-DUFF High Freoiencv Direction Finder HPF High Pass Filter: Highest Probable Frequency HV High Voltage HPFP High Pressure Fuel Pump HVAC Heating, Ventilation. Air Conditioning HPG High Pressure Gas HVAP Hypervelocity (or High Velocity) Armour-Piercing HP-HR Horsepower-Hour HVAR High Velocity Aircraft Rocket HPI High Performance Insulation, Homing Position HVAT High Velocity Anti-Tank Indicator HVC Hardened Voice Channel HPM Mine Counter-Measures Helicopter HPN Heavy Primary Nuclei HVDF High and Very High Frequency Direction Finder HPOX High Pressure Oxygon HVI High Value Item HPR High Powered Radar HVPS High Voltage Power Supply HPRV High Pressure Relief Valve HW Hot Wire; Headwind HPS Hydraulic Power System HWT Hypersonic Wind Tunnel HPT High-Pressure Test hwy Highway HP Turbine High Pressure Turbine HX Heat Exchanger 848 ABBREVIATIONS AND ACRONYMS ILAAS H/X Heat Exchanger ICS Instrument & Communication Subsystem: Integrated hyd Hydraulic Checkout System. Intercommunication System ICTC Inertial Components Temperature Controller HYDAC Hybrid Digitul-Anakig(ue) Computer ICTE Inertial Componont Test Equipment hydromet Hydrometeorological ICW In Compliance With: Interrupted Continuous Wave hygl Hypergolic ID Inside Diameter: Image Dissector: Identification HYLA Hybrid Language. Assembler IDB Inertial Data Box HYPERIGN Hypergolic Ignition IDBA Indirect Bomb Damage Assessment Hz Hertz (Cycles Per Second) IDC Image Dissector Camera IDCS Image Dissector Camera System IDCSS Initial Defense Communications Satellite System I Iodine: Incenoiary (Ammunitions); Interceptor idqnt Identification IDES Integrated Defence System IA Input Axis: Inverter Assembly IDF Intere DayeFighte IAA International Academy of Astronautics: International loG Interatd Driveigener Aerospace Abstracts IDG Integrated Drve Generator; IndividuDarlo p Glider IAC Integration. Assembly and Checkout: Information IDIT Identification Light Analysis Centre IDM Interdiction Mission IACS Integrated Armament Control System IDP Integrated Data Processing IAGC Instantaneous Automatic Gain Control IDR Inspection Discrepancy Report I and M Installation. Inspection and Maintenance IDSCS Initial Defense Satellite Communication System IAS Indicated Air Speed; Internal Alignment Sensor; IE Ionospheric Explorer Information Acquisition System IEC Integrated Electronic Control; Integrated Equipment IASOR Ice and Snow on Runway Component IASOR IteaonSao ons A o IECO Inboard Engine Cut-Off IATA International Air Transport Association IEEE Institute of Electrical and Electronics Engineers IAVC Instantaneous Automatic Volume Control 1EEP Incapacitated Emergency Egress Practice IAZ Inner Artillery Zone IEIS Integrated Engine Instrument System 11 Incendiary Bomb IEU Interface Electronics Unit IBDA Indirect Bomb Damage Assessment IF Intermediate Frequency IBECO Inboard Booster Engine Cutoff I/F Interface IBIT ICBM Blast Interference Test IFA International Fighter Aircraft IBN Identification Beacon IFS Invitation for Bids IBRL Initial Bomb Release Line IFC Independent Fire Control (Area); Inflight Calibration IC Intercommunications; Information Centre; Interim Change: Instrumentation Controller; Inertial IFF IdentificatFiroienn d/Foe Component: Internal Connection: International IFL International Frequency List Candle: Integrated Cicuit; Incremental Cost; Intercomputer Channel IF/MF Intermediate Frequency/Medium Frequency I/C Intercom IFOV Instrument Field of View ICA Investigative and Corrective Action IFR Instrument Flight Rules; Intermediate Frequency ICAO International Civil Aviation Organization Range ICARUS Intercontinental Aerospacecraft-Range lnlimited IFRU Interference Frequency Rejection Unit System IFS Integrated Flight System ICBM Intercontinental Ballistic Missile IFT In-Flight Test ICBT Intercontinental Ballistic Transport IGFET Insulated Gate Field Effect Transistor ICC Intercomputer Communication Channel: Installation, IGOR Intercept Ground Optical Recorder Checkout & Calibration: Instrument Control Center IC & C Installation Calibration and Checkout IGV Inlet Guide Vane ICDU Inertial Coupling Display Unit IGY International Geophysical Year ICE Instrument Checkout Equipment: Internal Combustion IHAS Integrated Helicopter Avionic System Engine: Integration with Controlled Error IHP Indicated Horsepower ICG Inflight Coverall Garment II Item Identification ICGM Intercontinental Glide Missile Iis Integrated Instruments System 1CM Instrumentation and Communication Monitor UJAJ Intentional Jittqr Antijam ICMR Instrument Calibration & Maintenance Record ICNI Integrated Communications Navigation and IJU Intentional Jitter Jamming Unit Identification IL Inside Layer ICOS Integrated Checkout System ILA Instrument Landtng Approach ICR Ion Cyclotron Resonance ILAAS Integrated Light Attack Avionics System 849 'Ow ILAS ABBREViATIONS AND ACRONYMS ILAS Instrument Landing Approach System: Instrument lop In Orbit Plane Low Approach System lOT Initial Orbit Time ILCA Inverter Light Control Assembly IP Instrumentation Per identification Point: ILCCS Integrated Launch Control and Checkout System ;dentification of Position; Instructor Pilot: Initial ILCL Intemratg LAunCtond CPoint: Impact Predictor: Impact Point ILL Illuminating (Ammuniton) P Impact Predictor lIM Independent Landing Monitor IPAD Inccming Procurement Authorization Document ILRV Integral Launch and Re-Entry Vehicle: Integral IPC Intermittent Positive Control; Information Processing Launch and Recovery VehicLe Center ILS Instrument Landing System IPD Impact Prediction Data ILSO Incremental Life Support Operations IPECS Integrated Power & Environmental Control System IM Impulse Modulation: Intermediate Moisture: 5'l Integrated Position Indicator Intermodulation; Inspection Manual: Interceptor I1111 Immediate Photographic Interpretation Report Missile; Instrumentman; Inner Marker: Inner Marker Beacon IPL Illustrated Parts List: Information Processing IMC Image Motion Compensation: Instrument Language Meteorological Conditions IPM Interruptions Per Minute IMCC Image Motion Compensation and Calibration IPS InnesttrruPmwerSntpaltion Power Supply, Inches Per Second; Inverter Power Supply IMEO Inertial Mass in Earth Orbit IPW Interrogation Prisoner of Wao IMG Inertial Measurement Group IR Illuminator Radar: Infrared: Instrument Reading: IMH Inlet Manhole Interrogator-Responser IMM Independent Manned Manipulator: Integrated I & R Interchangeability and Replaceability: Intellgence & Material Management Reconnaisance IMN Indicated Mach Number IRA Input Reference Axis IMP Impulse, Impedance: Impact; Initial Military Program IRACQ Instrumented Range Acquisition impg ImipmreggIpnragtea eIRAN IRAD IInnsdpeepcetniodne.n tR eRpeasire aarsc hN &ec eDsesvalreyopment IMS Inertial Measurement Set; International Military Staff MRASERS Infrared amplification by simulated emission of IMSR Interplanetary Mission Support Requirements radamtion IMU Inertial Measurement Unit IRBM Intermediate Range Ballistic Missile IN Inertial Navigation IRCM Infrared Countermeasures inbd Inboard IR & D Independent Research and Development INC Item Name Code IRFNA Inhibited Red Fuming Nitric Acid incand Incandescent IRG Inertial Rate Gyro INCOS Integraid Control System IRHD International Rubber Hardness Degree INF Interface: Interference Interceptor Night Fighter: IRIG Inerital Reference Integrating Gyro Internutional Nuclear Forces lnM IRIS Infrared Interferometer Spectrometer inoereio MiIRLS Infrared Landing System: Infrared Une Scan: INOP Inoperable Interrogation. Recording, and Location System INS Inertial Navigation System IRMLD Infrared Missile Launch Detection INSATRAC Interception with Satellite Tracking IRP Inertial Reference Package INSITE Integrated Sensor Interpretation Techniques IRR Intelligence and Radar Reporting Line; Infrared inst Institute Radiometry int Interior. Internal IRS Inertial Reference System INTELSAT International Te;ecommunicaton Satellite Consortium I & RS Instrumentation and Range Safety intercom Intercommunications IRSS Instrumentation Range Safety System intfr Interference I.tSTS Infrared Search-Track System intk Intertank IRT Intarrogator- Responser-Transponder INTREP Intelligence Report IRTRN Infrared Transmisson intrstg Interstage IRU Inertial Reference Unit INTSUM Intelligence Summary IFV Inter Range Vector 10 Inspection Order; Intelligence Officer IRVU Infra-Red Vision Unit I/O Input/Output IS Instrumentation System IOA Input Output Address ISA International Standard Atmosphere IOC Initial Operational Capability: Integrated Optical ISB Intermediate Side Band Circuits IOCS Input Output Control System ISC Item Status Code IOD Integrated Observation Device ISCO Initial Systems Checkout IODC Input Output Data Channel ISO Initial Search Depth 850 ABBREVIATIONS AND ACRONYMS kWhr ISDS Inadvertent Separation Destruct System JEEP Joint Emergency. Evacuation Plan ISLS Interrogator Side Lobe Suppression JEFM Jet Engine Field Maintenance ISMLS Interim Standard Microwave Landing System jett Jettison ISO Isotropic; Information Services Officsr: International JGS Joint General Staff Standardisation Organisation JI Control Jet Interaction Control isol Isolation JIC Joint Intelligence Centre sore Isometric JIG Joint Intelligence Group itoth Isothermal jkt Jacket ISP Impulse. Specific JLPG Joint Logistics Planning Group ISR Infrared Scanning Radiometer JMTC Joint Military Transportation Committee JOC Joint Operations Centre ISS Inertial Subsystem: Inertial Sensor System JP Jet Propellant: Jet Petrol; Jet Pilot; Jet Propulsion IST Integrated Systems Test; Inter-Station Transmission (Especially in the Designations of Fuels for Jet ISV Inlet Swirl Vane Engines. as in JP-1. JP-3) IT Insulating Transforme.r: Interrogator-Transponder JPG Joint P.?nning Group iTA Integrated Thruster Assembly; International Telegraph JPL Jet Pronusion Laboratory Alphabet JR Jam Resistant ITACS Integrated Tactical Air Control System JTF Joint Task Force ITCP Integrated Test and Checkout Procedures jw Jacket Water ITCZ Intertropical Convergence Zone ITDE Integrated Tactical Display; Interchannel Time K Displacement Error :TE Instrumentetioi Test Equipment kb Kilobit ITF Intertropical Front kbps Thousand Bits Per Second; Kilobits Per Second ITM Interceptor Tactical Missile kb/ Kilbits Per Second ITNS Integrated Tactical Navigation System kc Kilocycle(s) ITP Inspection Test Procedure: Integrated Test Program kcal Kilocalorie ITPR Infrared Temperature Profile Radiometer kc/s Kilocycles Per Second ITPS Integrated Teleprocessing System KEAS Knots Equivalent Air Speed ITR Inverse Time Relay. Inspection Test Report: keV Kilo Electron Volt Incremental Tape Recorder kg Kilogram(s) ITS Information Transfer Satellite kg-cal Kilogram-Calorie IU Instrument Unit; Interference Unit kq/cu m Kilograms Per Cubic Metre IV Intravehicular; Initial Velocity kg-m Kilogram-Metre IVA Intravehicular Activities kg/s Kilograms Per Second IVALA Integrated Visual Approach and Landing Aids kHz Kilohertz IVI Incremental Velocity Indicator KIAS Knots Indirated Airspeed IVPr Inervehicle Power Transfer kilo (prefix) Thousand. as used in kiloamnere, kilovolt. etc IVSI Instantaneous Vertical Speed Indicator kip (kilo A thousand pounds of weight as used in the U.S. IVVS Instantaneous Vertical Velocity Sensor pound) and Bitimn IXR Intersection of Runways kI Kilolitre km Kilometre(s) kMc Kilomegacycle JACS Jet Attitude Control System km/s Kilometers Per Second JAGIT Joint Air-Ground Instruction Team kn Knot JAN Joint Army-Navy kp Magnetic Activity Index JANAP Joint Army-Navy-Air Force Publication kp/s Kilopound Per Second JANIS Joint Army-Navy Intelligence Study kpsi Kilopound Per Square Inch JAPC Joint Air Photo Center ksi Kilopound Per Square Inch JARC Joint Air Reconnaissance Centre JATO Jet Assisted Take-Off kt Knots; Kiloton JB Junction Box; Jet Bomb kV Kilovolt(s) JCC Joint Communication Center kVa Kilovolt Ampere(s) JCEC Joint-Communications-Electronics Committee kVah Kilovolt-Ampere Hour J Code Justification Code kVdc Kilovolts, Direct Current JCS Joint Chiefs of Staff kW Kilowatt(s) ict Junction kWhr Kilowatthour 861 ABBREVIATIONS AND ACRONYMS LAL LCA Lighting Control Assembly: Local Communication i Area LA Launch Abort; Low Altitude; Launch Area: Launch Lcc Logistics Coordination Centre: Life Cycle Cost: Aziuth Launch Control Center L&A Landing nd Ascent LCD Least Common Denominator L&aAdL adisnc ei CELow Cost Expendable Launch Vehicle: LetCs LAA Light Anti-Aircraft Artillery: Low Altitude Attack LCE LAA Estimate LAAPES Low Altitude parachute Extraction System LCF Launch Control Facility: Low Cycle Fatigue LAAR Liquid Air Accumulator Rocket LCG Liquid Cooled Garment LAAV Light Airborne Attack Vehicle LCI Launcher Control Indicator LAAW Light Assault Anti-Tank Weapon LCL Lower Control Limit LAB Low Altitude Bombing LCLV Low Cost Launch Vehicle lab Laboratory LCM Least Common Multiple LABS Low Altitude Bombing System LCN Load Classification Number LACE Liquid Air Cycle Engine LCNR Liquid Core Nuclear Rocket LAET Limiting Actual Exposure Time LCP Left Circular Polarization LAF Laminar Airt ow LCRO Low Cross-Range Orbiter LAGS Laser Activated Geodetic Satellite LCS Launch Control System LAHS Low Altitude. High Speed LCSS Land Combat Support System LAINS Low Altitude Inertial Navigation System LCT Launch Control Trailer LALO Low Altitude Observation LCU Launch Control Unit lam Laminate L/D Lift-Drag Ratio: Length/Diameter LAMP Low Altitude Manned PenetratoT LD Load: Lethal Dose LAMPS Light Airborne Multi-Purpose System LDA Landing Distance Available LAMS Load Alleviation and Mode Stabilization LDV Low Density Data LANABS Light Attack Tactical Navigation and Bombing Idg Landing System ldg gr Landing Gear LANNET Large Artificial Nerve Net LDR Low Date Rate: Leader LAP Low Altitude Performance LOT Level Detector LAPES Low Altitude Parachute Extraction System LDTR Long Dwell Time Radar LARA Light Armed Reconnaissance Aircraft LE Launch Escape: Launching Equipment; Leading Edge: LARS Light Artillery Rocket System: Low Altitude Radar Low Explosie Light Equipment; Limit of Error System LEA Long Endurance Aircraft: Launch Escape Assembly LASA Large Aperture Seismic Array LEC Launch Escape Control LASDS Low Altitude Serial Delivery System LEO Light-Emitting Diode: Low Energy Detector LASER Light Amplification by Stimulated Emission of LEED Laser Energized Explosive Device: Lower Energy Radiation Electron 0iffraction LASH Laser Anti-Tank Semi-Active Homing LEJ Longitudinal Expansion Joint LASRM Low Altitude Short Range Missile LEL Lower Explosive Limit LASSV Land & Approach System for Space Vehicles LEM Lunar Excursion Module LASV Low Altitudo Supersonic Vehicle (Formerly SLAMO) LEO Low Earth Orbit LAT Lateral: Latitude; Local Apparent Time LEP Lowest Effective Power LAW Light Anti-Tank Weton; Light Assault Weapon LEPS Launch Escape Propulsion System LB Light Bomber; Light Bombardment: Local Battery LES Launch Escape System (Telephone): Load Bank LESS Least Cost Estimating Scheduling lb Pound LET Liear Energy Transfer L band A designation formerly given to a band of radio frequencies between 390 and 1,650 mega-cycleS LETS Linear Energy Transfer Spectrometer lb-ft Pound-Foot LEV Launch Escape Vehicle lb ft Pound-Feet LF Load Factor: Launch Facility; Live Flying: Low lb It Pound-Fnch Frequency: Low-Altitude Fighter tb-in Pound-inch LBNP Lower Body Negative Pressure L/F Launch Facility LBR Low Burning Rate; Low-Bit Rate: Line of Bomb LFC Laminar Flow Control Release LFDF Low Frequency Direction Finder LBS Light Bomber Strike LF Loran Low-Frequency Loran IbT Pounds (Thrust) LF/MF Low Frequency, Medium Frequency LBU Launch Booster Unit LFMS Laminated Ferrite Memory System LC Launch Complex; Low Carbon; Light Case (AviationL Bombs) LFO Low Frequency Oscllator 852 ABBREVIATIONS AND ACRONYMS LSS LFR Low Frequency Range LOLA Lunar Orbit & Landing Approach (Simulated) LFSW Landing Force Support Weapon LOLEX Low Leve! Extraction-System LG Long: Landing Gear LOM Lunar Orbital Mission LGS Landing Guidance System Iongn Longeron Hn iLOPAIR Long Path Infrared System Ih Land LOPAR Low Power Acquisition Radar LOR Lunar Orbit Rendezvous LHA Local Hour Angle LORAC Long Range Accuracy (CW Navigation Systems) LHR Lower Hybrid Resonance LORAD Long Range Active Detection LIDAR Light Detection and Ranging LORAN Long Range Navigation LIFO Last In First Out LORBI Locked-On Radar Bearing Indicator LIMAC Large Integrated Monolithic Array Computer LOREC Long Range Earth Current Communications in ft Linear Foot LORL Large Orbital Research Laboratory LINS Lightweight Inertial Navigation System LORTAN Long Range & Technical Navigation System LIRL Low Intensity Runway Lighting LORV Low Observability Re-entry Vehicle LIT Light Interface Technology; Light Intratheatre LOTV Launch Operations and Test Vehicle Transport LOV Limit of Visibility: Loss of Vision: Loss of Vehicle LITVC Liquid Injection Thrust Vector Control LOX Liquid Oxygen LIV Low Input Voltage LPA Log Periodic Antenna LIVE Lunar Impact Vehicle Compressor Low Pressure Compressor Ik Link: Leak Ikd Locked LPD Labelled Plan Display: Landing Point Designator LL Lower Umit; Low Level: Lightweight Load: Loudness LPF Low Pass Filter: Low Pressure Filter Level LPFP Low Pressure Fuel Pump LLBS Low Level Bombsight LPFR Liquid-Phase Flow Reactor LLCF Launch & Landing Computational Facilities LPG Liquefied Petroleum Gas LLL Low Light Level LPH Litres Per Hour: Landing Personnel Helicopter: LLR Load Limiting Resistor Landing Platform Helicopter LLLTV Low Light Level Television LPLWS Launch Pad Lightning Warning System LLS Low Level Sensor LPOX Low Pressure Oxygen LM Local Manufacture: Lunar Module: Landmark LPS Litres Per Second LME Launch Monitor Equipment LPTV Large Payload Test Vehicle LMFBR Liquid Metal Fast Breeder Reactor LPW Lumens Per Watt LMG Light Machine Gun L&R Landing and Recovery LMH Light Metal Hydrides LRHSC Large Radioisotope Heat Source Capsule LMT Local Mean Time: Log Mean Temperature: Limit: Limitation LRI Long Range Interceptor: Left-Right Indicator LN Liquid Nitrogen LRM Liquid Rocket Motor LNA Low Noise Amplifier LRO Large Radio Observatory Inch Launch LRR Long Range Radar Indg Landing LRRR Laser Range Retroreflector LNG Liquid Natural Gas LRU Line Replaceable Unit LNM Lithium Nuclear Microprobe LS Launch Site: Life System: Logistic Support: Low LT3 Noise Pollution Level Speed: Limited Standard: List of Specifications: LO Low; Liftoff: Local Oscillator: Liaison Officer: Lunar Landing Site: Lunar Surface Orbiter: Launch Operations LSB Lower Sideband: Least Significant Bit L/O Lift-Off LSC Linear Shaped Charge LOA Length Overall: Light Observation Aircraft LSD Landing Site Determination: Low Speed Data LOB Line of Balance LSE Launch Sequencer Equipment: Launch Support LOBO Lobe on Receive Only (a passive scan technique Equipment: Life Support Equipment used as an ECCM) LOC Line of Communication LSF Launch Support Facility LOE Level of Effort LSI Large Scale Integration LOFAR Low Frequency Acquicition and Ranging LSIC Large Scale Integrated Components LOG M Logistics Module LSO Landing Signal Officer LOH Light Observation Helicopter LSR Launch Site Recovery LOI Lunar Orbit Insertion LSS Life Support System: Launch Support System 853 _ 4 LST ABBREVIATIONS AND ACRONYMS SLST LauunScMh ASNupIApCor t Team: Locl Stndard Time: Liquid cMmautheematical Analyzer Numerical Integrator and Storage Tank: Large Stellar Telescope: Large Space Computer Telescope: Local Sidereal Time MANTRAC Manual Angle Tracking Capability LSU Life support Umbilical; Life Support Unit MARC Machine-Readable Cataloguing: Material L/SW Limit Switch Accountability Recovery Code LT Low-Torque: Light: Low Tension: Landing Team: MARS Magnetic Airborne Recording System Long Toi MART Mobile Automatic Radiation Tester L/T Lead Time MARV Maneuvering Anti-Radar Vehicle LTA Lighter ThanAir MAST Magnetic Annular Shock Tube LmMATrS Multiple Air borne Target Trajectory System Ltd Limited MBC Maximum Breathing Capacity LTE Local MBGE Missile Borne Guidance Equipment LTG Local Tactical Grid MBRV Maneuverable Ballistic Re-Entry Vehicle LTPD Low Tolerance Percent Defective MC Main Chute; Magnetic Course; Missile Control(ler): LTS Lightning Test Set Mapping Camera Mc Megacycle LTV Launch Test Vehicle beMC&G Mc MMeagpapoinygc.l eCharting and eds LUF Lowest Useful High Frequency: Lowest Useable Frequency Mc/s Megacycles Per Second LUG Light Utility Glider MC & W Master Caution and Warning LUM Living Utility Module MCA Main Console Assembly LV Launch Veicle: Low Voltage MCB Module Control Block LV Launch Vehicle: Locl Vetal MCBF Mean Cycle Between Failures L/VLanVch ile:LoalVetialMCDP M icro- Programmed Data Processor LVD Low Velocity Drop: Low Velocity Detonation MMCCGDSP Mmiiccrroow-Pavreo gCraommmmadnd Gduai danccee sSeystem LVDT Lii Par Variable Differential Transformer MCOV Main Chamber Oxidizer Valve LVPS Low Voltage Power Supply MCP Master Computer Program; Mission Control LVR Low Voltage Release Programmer LVRJ Low Volume Ramjet MCSS Microscopic Camera Subsystem LVT Linear Velocity Transducer md Microdot LW Light Warning: Umited Warfare: Launch Window MDA Minimum Descent Altitude: Mechanically Despun LWAR Light Weight Attack and/or ReconnaissanceAntenna LWAW Light Weight Airac ar nne MDAP Mutual Defence Assistance Program LWAW Light Weight Aircraft Warning MDAR Malfunction Detection Analysis and Recording MDAS Meteorological Data Aquisition System LWR Light Weight Radar MDC Main Display Console: Miniature Detonating Cord: LWRecce Light Weight Reconnaissance Aircraft Mission Duty Cycle LWRU Light Weight Radar Unit MDCS Maintenance Data Collection System: Master Digital LWS Lightning Warning System: Light Warning Radar Set Command System LWSR Light Weight Strike Reconnaissance MDE Meteoroid Detection Experiment LZ Landing Zone MDF Manual Direction-Finder/Manual Direction Finding; Medium-Frequency Direction-Finding Station; Mild M Detonating Fuse m Metre: Milli (Prefix) MDFNA Maximum Density Fuming Nitric Acid MA Mike Amplifier; Master; Marshalling Area: MOl Miss Distance Indicator Milliamperes: Missed Approach MDM Multiplex/Demultiplex M/A Maintenance Analysis MDP Master Display Panel MAA Medium Anti-Aircraft Weapon MDR Mission Data Reduction; Long Range M and A Maintenance and Assembly Reconnaissance Seaplane; Minor Discrepancy Repair MAB Mechanical Automation Breadboard: Missile MDS Malfunction Detection System: Minimum Discernible Assembly Building System MAC Multi-Access Computer; Mean Aerodynamic Chord MDSPR Mode Suppression MADGE Microwave Aircraft Digital Guidance Equipment MDT Mean Down Time MADRE Magnetic Drum Radar Equipment MDXDCR Mode Transducer MAG AMPL Magnetic Amplifier ME Miscellaneous Equipment: Main Engine: Multi-Erigine MAI Machine-Aided Indexing Me Messerschmit MAIDS Multipurpose Automatic Inspection &i Diagnostic Missergy System: Management Automated Information Display m/e dss/Energy System M&E Maintenance and Equipment Manoeuvres and MAN Microwave Aerospace Navigation: Manual Exercises 854 4,a ABBREVIATIONS AND ACRONYMS MISS MEA IMnastinru mEelenctt rAonltiictusd Aes sembly; Minimum En-Route MmGgdE Magnetogasdynamics Maintenance Ground Equipment MEAL Master Equipment Allowance List MGSE Maintenance Ground Support Equipment MEAT Multi-Edge Adaptive Tracker MH Magnetic Heading MEC Marual'Emergency Controls. Maximum Endurable MHA Modified Handling Authorized Concentration MHCP Mean Horizontal Candlepower mech Mechanical mhd Magnetohydrodynamics MECO Main Engine Cutoff MHE Materials Handling Equipment MED Manual Entry Device; Medical; Medium MHF Mixed Hydrazine Fuel: Medium High Frequency MEDEVAC Medical Evacuation MHW Mean High Water MEE Minimum Essential Equipment MH/OH Man-Hours/Operating Hours Meg Megohm MHz MegaHertz (Million Cycles Per Second) mi Mile meg: mega One Million (as in Megacycle) M/I Mechanical Impulse: Minimum Impulse MEGA Military Evaluation of Geographic Areas Megw(a) Megawatt M & I Modification and Installation MIA Multiplex Interface Adapter MEH Multi-Engined Helicopter MIB Minimum Impulse Bit MEIG Main Engine Ignition mic Micrometer MEL Minimum Equipment List MICPAC Microelectronic Integrated Circuit Package MEOP Maximum Expected Operating Pressure micro One-Millionth. as in Microinch MEP Mean Effective Pressure micromet Micrometeoroid MER Manned Earth Reconnaissance: Multiple Ejector MICRS Main Instrument Console and Readout Stations Rack: Meridian MID Minimum Infective Dose MERU Milli-Earth Rate Unit (0.015 degrees/hour) MIDAS Measurement Information and Date Analysis System: MES Main Engine Start Missile Defense Alarm System: Modified Integration MET Modular Equipment Transporter: Mission Event Digital Analog Simulator: Meteorological & Lightning Timer; Meteorological: Mission Elapsed Time Data Aquisition System METS Modular Engine Test System MIDES Missile Detection System MEW Manufacturer's Empty Weight; Microwave Early MIDOT Multiple Interferometer Determination of Trajectories Warning MIG Multi-Level Interconnection Generator: Miniature MESA Manned Environmental Systems Assessment: Integrating Gyroscope: Metal Inert Gas Modularized Equipment Storage Assembly MIHPED Micro-Wave Induced Helium Plasma Emission METOP Maximum Expected Take.Off Power Detection MeV Million Electron Volts MIL Military Specification MEWS Missile Early Warning Station MILS Missile Impact Locator System; Milliradians MF Motor Field; Medium Frequency MILSPEC Military Specifications M sub f The temperature at which martensite formation is mil std Military Standard complete on cooling See 'transformation MIMS Multi-Item, Multi-Source temperature'. M&F Male & Female min Minmum: Minute MFC Multiple Flight Computer MINCOMS Multiplexed Interior Communication System MFCO Manual Fuel Cutoff mini Miniature MFCV Modulating Flow Control Valve MINS Miniature Inertial Navigation System mfd Manufactured MIP Missile Impact Prediction MF/DF Medium Frequency/Direction Finder MIPE Magnetic Induction Plasma Engine mfg Manufacturing MIPIR Missile Precision Instrumentation Radar (C-Band MFP Moisture Fungus Proofing Radar) Mfr Manufacture MIPS Million Instructions Per Second: Missile Impact MFR Multifunctional Receiver Prediction Set MFS Multifunction Sensor: Missile Firing Simulator MIRAGE Microelectronic Indicator for Radar Ground MFSK Multiple Frequency Shift Keyed Equipment MFT Mean Flight Time MIRL Medium IntensiW Runway Ughting MFV Man Fuel Valve MIROS Modulation Inducing Retro-Directive Optical System Mg Motor Generator: Middle Gimbal; S1/mbol for MIRV Multiple Independent Re-Entry Vehicle Magnesium MIRVS Multiple Independently Targetable Re-Entry Vehicles mmglm is: Millhgram misc Miscellaneous MGC Missile Guidance Computer: Manual Gain Control MISS Missile Intercept Simulation System: Multi-ltem. MGCI Master Ground-Controller Interception Radar Single-Source 855 MISTRAM ABBREVIATIONS AND ACRONYMS MISTRAM Missile Trajectory Measurement M-P Minus to Plus MIT Master Instruction Tape MPA Mission Performance Assessment MITAC Miniature Airborne TACAN Equipment MPB Material Performance Branch ITEIntegration Termina Equipment MPC Manuel Pointing Controller: Meteorological Prediction MITE Misil e r Center: Multi-Spectral Photographic Camera MITO Minimum Interval Taka-Off MPD Magnet-Plasmadynamic: Multipurpose Display MITTS Mobile Intermediate Tracking Telescope System MPE Missile Positioning Equipment: Maximum Permissible MIU Mobile Inspection Unit Exposure MIV Mobile Instrumentation Van MPF Manpower Flight MJ Mechanical Joint MPg Multipoint Grounding: Miles Per Gallon MPH Miles Per Hour mk M r a MPHS Miles Per Hour Per Second M-K Mae r m MPI Mean Point of Impact mkr Marker MPL Minimum Power Level ML Missile Launcher: Mold Line: Mobile Launcher: MPLE Multi-Purpose Long Endurance (Aircraft) Statute Mile MPM Monocycle Position Modulation: Miles Per Minute MmLl EV MMaan neLd ifLiifntingg EEnMtryP PV ehicle Matrix Parallel Processor: Miles Per Pound MPR Medium Power Rader MLG Main Landing Gear MPS Main Propulsion Systems MLI Multilayer Insulation MPSR Mission Profile Storage & Retrieval MLS Microwave Landing SystemMPT Missile -Flight T er mmTMtsisteMleiliFhgt MmMmF MMginiemtoemtoet ive FFoorMcePWP Maximum Permissible Working Pressure MMH Monomethylhydrazine (fuel) mpx Multiplex MR Mixture Ratio: Medium Range: Medium Resolution: mmHg - Millimetrs of Mercury Magnetospherically Reflected MMM Multi-Mission Module M/R Mixture Ratio MMSS Multi-Module Space Station MRAD Milliradians MMU Midcourse Measurement Unit: Modular Maneuvering MRBM Medium Range Ballistic Missile Unit mnfld Manifold MRCA Multirole Combat Aircraft MNOS Metal Nitride Oxide Semiconductor MRCV Mixture Ratio Control Valve M&O Maintenance and Operation MRFL Master Radio Frequency List MOA Manual-Off-Automatic MRG Medium Range MOB Main Operating Base: Mobile MRIR Medium Resolution Infrared MOBIDIC Mobile Digital Computer MRL Material Requrements List: Medium Rocket MOBS Multiple Orbital Bombardment Launcher: Medium Power Loop Range MOCA Minimum Obstruction Clearance Altitude MRMR Material Requirement Mobilization Reserve mod Model: Modification: Modulation: Module MRO Maintenance. Repair. and Operation MODEM Modulator Demodulator MRP Miltary Rated Power MODEST Missile Optical Destruction Technique MRU Microwave Relay Unit: Mobile Refrigeration Unit MODICON Modular-Dispersed-Control MomO n o netaMRV Manoeuverable Re-Entry Vehicle MOI Moment of Inertia MOL Manned Orbital Launch: Manned Orbital Laboratory MS Mass Spectrometry: Machine Screw: Machine Steel: Milestone: Margin of Safety: Military Standard: S MN Mixed Oxides of Nitrogen (Oxidizer) Meteoroid Shield; Motion Sensitivity MOPA Master Oscillator Power Amplifier M sub s Marteansite start: the highest temperature at which MOPTAR Multi-Object Phase Tracking and Ranging mrtensite forms on cooling. See 'transformation MOS Metal-Oxide Silicon: Metal Oxide Semiconductor temperature. MOSAIC Mobile System for Accurate ICBM Control ms Millisecond(s) MOSAR Modulation Scan Array Receiver M/S Mainstage MOSS Manned Orbital Space Station M&S Materials & Services MOT Manned Orbital Telescope MSA Minimum Safe Altitude: Minimurm Surface Area MOTS Module Test Set: Mobile Optical Tracking System: MSB Most Significant Bit: Missile Storage Building Minitrack Optical Tracking System MSBLS Microwave MOTU Mobile Optical Tracking 'Unit MOV Main Oxidizer Valve: Manned Orbital Vehicle MSC Metric System Conversion , MSL Mean So* Leve: Missile MP Medium Pressure: Melting Point: Military Police: Maintpnance Period MSCO Manual Sustainer Cutoff mp Manifold Pressure: Most Prbable Position MSCP Mean Spherical Candlepower T856 ABBREVIATIONS AND ACRONYMS NBMR '” MSE Maintenance SuppoSrtu pEpqouritp ment: MechEaqnuicimale e MUT Mean Up Time tSupport Equipment MUX Multiplex(eir) __ msc Millisecond(s) MV Muzzle Velocity: Millivolts: Multivibrator: Motorized MSF Mobile Striking Force: Manned Spac Flight Valve: Medium Voltage .mag ; MMe ssage MVC Manual Volume Control SMSI Medium Scale Intgration MVD Map and Visual Display (Unit) M MVDC Millivolts. Direct Current I- MSIS Manned Satellite Inspection System MVF Manned Vertical Flight MSK Manual Select Keyboard MW Microwave: Mega-Watt: Milliwatt MSN Mission: Manned Space Network MWAR Major World Air Routes MSO Mass Spectrometer Outgoing MWDP Mutual Weapons Development Programme MSP Mutual Security Program MWG Music Wire Gage (Gauge) MSR Main Supply Route: Missile Site Radar: Missile Site MWP Maximum Working Pressure; Maneuvering Work Range Platform MSRP Massive Selective Retaliatory Power MWR Mean Width Ratio MSS Modular Space Station MWST Mean Weighted Skin Temperature MST Missile System Test: Mountain Standard Time MWV Maximum Working Voltage MSU Mass Storage Unit mx Multiplex msw Microswitch MY Man-Yers MT Magnetic Tape: Maximum Torque: Master Timer; Mega-Ton: Mechanical Time (Fuse): Motor Transport N (Fuel) NA Not Asigned MTA Mass Thermal Analysis: Military Training Airspace NA Not Assicne MTBF Mean ime Between Failures MTBM Mean Time Between Malfunctions: Mean rime nac Nacelle Between Maintenance NACA National Advisory Council for Aeronautics MTBMA Mean Time Between Maintenance Action NACTU Night Attack Combat Training Unit MTC Mission and Traffic Control: Master Thrust Control NAD Naval Air Department: Naval Ammunition Depot MTCU Magnetic Tape ControJ Unit NADGE NATO Air Defense Ground Environment mtd Mounted NAE National Aeronauticel Establishment MTE Multi-System Test Equipment NAF Naval Air Facility M & TE Measurement and Test Equipment NAFAG NATO Air Forces Armaments Group MTEE Mission Time Extreme Environment NAPS Night Aerial Photographic System MTF Mechanical Time Fuse NAPU Nuclear Auxiliary Power Unit MTG Mounting: Meeting NARATE Navy Radar Automatic Test Equipment MTI Main Tank Injection: Moving Target Indicator NAS National Airspace System: Naviption Avodance mtt Material: Materiael: Metal System MTOS Metal Thick Oxide Silicon NASA National Aeronautics an Spe Administration MTR Mean Time to Repair: Missile Tracking Radar: S NASC Naval Air System Command Main and Tail Rotor NATCS National Air Traffic Control System mtrk Minitrack NATO North Atlantic Treaty Organization MTS Mobile Tracking Stations: Missile Test Set: NATRAP Narrow-Band Transmission of Radar Pictures Meteoroid Technology Satellite naut Nauical MTSQ Mechanicl Time Super Ouick (Fuse) nay Naval or Navy: Navigation MTSS Military Test Spame Station NAVAID Navigation Aid MTrCO Mean Time to Check Out NAVDAC Navigation Data Assimilation Computer MTTF Mean Time to Failure NAVS Navigation System MTTFF Mean Time to First Failure NAWAS National Warning System MTTR Mean Time to Report NB Narrow Band: Narrow Bem: Naval Bese: Navigation MTU Mobile Training Unit Bass MTVC Manual Thrust Vector Control NBC Nuclear. Biological snd Chemical MU Mock-up: Mobile Uni Multiple Unit: Maneuvering NBCD NBC Defens Unit MUA Maximum Usi“ Altitude N9FM Narrow Band Frequency Modulation MUBIS MOltiple Beom Interval SCe.ner NBI Nuclear Burst Indicator MUF Maximum Usable Frequency NBL Night Bombardment Long Distance mull Multiple NBMG Navigational Bombing and Misale Guidance MUSE Monitor of Ultraviolet Solar Energy NBMR NATO Basic Military Requirments I! 857 nbr ABBREVIATIONS AND ACRONYMS nbr Number NLG Nose Landing Gear NBS National Bureau of Standards: Navigation and NLGC Noise Level Gain Control Bombing System: Night Bombaidment Short NLT Not Later Than Distance NLTE Non-Local Thermodynamic Equilibrium NBW Narrow Bandwidth NM Nautical Miles: Non-Metallic NC Network Controller: No Change: Nose Cone: NMOR NATO Military Basic Requirement Normally Closed: Cetane Number NMO Normal Manual Operation NCW Nose Cone Warhead NMR Nuclear Magnetic Resonance NCR Nonconformance and Corrective Action Reporting System NMSS National Muipurpose Space Station NCS Net Control Station NNI Noise and Number Index NO Normally Open: Night Observation NOS No reCt on rBol nt NOC Network Operation Control NOB Nondirectional Beacon n n o i a norit Nominal NDE Non-destructive Evaluation NOMAD Navy Oceanographic Meteorological Automatic NDI Non-destructive Inspection Device NDRO Non-Uestructive Read Out NOMSS National Operational Meteorological Satellite System NOS Nuclear Detection Satellite NOP Non-Operating NOT Non-Destructive Testing NORAC No Radio Contacts NEC National Electncal Code norm Normal NECAP Navigation NOTAM National Orbiting Space Station Equipmnt Capability Analysis NOTAM Notice to Airmen NECS National Electric Code Standards noz Nozzle NEEP Nuclear Electronics Effects Program NP Napalm NEF Noise Exposure Forecast NPDS Nuclear Particle Detection System neg Negative NPL Noise Pollution Level: Normal Power Level NEMP Nuclear Electromagnetic Pulse NPN Negative-Positive-Negative NEPA Nulcear Energy Powered Aircraft: Nuclear Energy for NPR Nose/Power Ratio Propulsion of Aircraft NEPN Near Earth Phase Network NPSH Net Positive Suction Head NERVA Nuclear Engine for Rocket Vehicle Application NPSP Net Positive Suction Pressure NESC National Electrical Supply Code NPV Nitrogen Pressure Valve: Non-Propldsive Vent NESS National Environmental Satellite Serie NQR Nuclear Guardruple Resonance NESTS Non-Electric Stimulus Transfer System NR Not Required: Number: Expendable Non-Recoverable: NATO Restricted: Noise Rating net Network NRC Non-Recurring Costs: National Research Center neut Neutral NRM Non-Recurring Maintenance N.F. Night Fighter (British) NRP Norma! Rated Power NFF No Fault Found NRS Nuclear Rocket Shuttle NFPM Nuclear Flight Propulsion Module n3 Narrow Gauge: No Good NRT Network Readiness Test: Near Real ime N&GS Navigation and Guidance Subsystems NRZ Non Return to Zero NGSP National Geodetic Satellite Program NRZ-L Non Return to Zero-Level NGTE National GasTurbine Estoblishment NS NATO Surveillance: Not Specified: NATO Secret NGV Nozzle Guide Vane nsec Nanosecond NH Nonhygroscopic NSO Noise Suppression Oscillator NHA Next Higher Asse ” . NSP Nuclear Strike Plan NI Noisiness Index NSPF Not Specificaly Provided for NIB Non-Interference Basis NSR Nominal Slow Rate: Northern Sea Route NIC New Installation Concept: Not in Contract NSSS National Space Surveillance System NICS NATO Integrated Communication System NT Non-Tight NILS Nuclear Instrument Lending System NW Nitrogen Tetroxide (Oxidizer) NIM Night Intruder Mission NIMPHE Nuclear Isotope Monopropellant Hydrazine Engine NTOL Normal Take-Off and Landing NIR Nose Impact Rocket NTP Normal Temperature & Pressure NK Nikon Camera NTPD Normal Temperature Pressure. Dry NL Neon Lama NTS Not to Scale: Negative Torque System NLD Nominal Line Drawing NTSB National Transiortation Safety Board NLF Nearest Landing Field NUDETS Nuclear Detection System 858 ABBREVIATIONS AND ACRONYMS OMU NULACE Nuclear Powered Active Detection System OCSTL On-Board Checkout System Test Language NUPAD Nuclear Powered Active Detection System OCU Opera°:onal Conversion Unit NVB Navigational Base ODG Orbit Data Generator NVR Nonvolatile Residue: No Voltage Release 0DM One Day Mission NW Nuclear Weapon: Nominal Width ODOP Offset Doppler ODR Omnidirectional Range: Omnidirectional Radar NWS Nose Wheel Steering ODTS Offset Doppler Tracking System NWSS Naional Weather Satellte System ODVAR Orbital Determination & Vehicle Attitude Reference NWT Non Watertight OECO Outboard Engine Cutoff NX Non-Expendable OEL Organizational Equipment List OERC Optimum Earth Re-Entry Corridor 0 OEW Operating Empty Weight OA Output Axis. On or About. Omni-Antenna: Overall OF Outside Face OA(Aircraft) Operationally Available (Aircraft) O/F Orbital Flight. Oxidizers to Fuel OAME Orbital Attitude and Maneuvering Electronics OFC Operational Flight Control OFR Ope. Failure Report OAMP Optical Analog(ue) Matrix Processing OFO OverFilutf eor OFSO Overfill Shutoff Sensor CAMS Orbital Attitude and Maneuvering System OG Outer Gimbal OAO Orbital Astronomical Observatoy OGA Outer Gimbal Axis: Outer Gimbal Assembly OASPL Overall Sound Pressure Level OGE Operational Ground Equipment OAT Outside Air Temperature: Operational Air Traffic. OGO Orbiting Geophysical Observatory Overall Test OATC Oceanic Air Traffic Control OGR Outgoing Repeater O GRAPH Oscillograph OATCR Operational Air Traffic - Radar Control and Reporting GT Outgogrunk System OGT Outgoing Trunk OATMS Operational Air Traffic - Military Air Traffic Services OGV Outlet Guide Vane OATNA Operational Air Traffic - No Asb;stance OH Operatianal Hardware: On Hand: Overhead (Lines): OATRD Operat ional Air Traffic - Radar Assistance Observd,ion Helicoptet OB On-Board: Operational Base: Order of Battle OHC Optics Hand Controller 0/8 On-Board OHD Over the Horizon Detection OBC On-Board Checkout ohm-metre SI unit of resistivity OBCO On-Board Checkout ohm-centimetre CGS unit of resistivity OHP Oxygen at High Pressure OBECO Outboard Engine Cutoff 01 Operational Instrumentation: Oil Insulated: Orbit OBGS Orbital Bombardment Guidance System Insertion OBI Omnibearing Indicator OIFC Oil Insulated Fan-Cooled OBIFCO On-Board In-Flight Checkout OISC Oil Insulated Self-Cooled obj Objective OIWC Oil Immersed Water-Cooled obl Oblique OJT On the Job Training OBS Obstacle: Observation: Obsolete: Omnibearing Selector: Observatory OL Overload: Operating Location. Open Loop Obst Obstruction OLF Orbital Launch Facilities: Outlying Field OBV Oxidizer Bleed Valve OLO Orbital Launch Operation OC Overcurrent: Operating Characteristic: On Center: OLOS Out of Line of Sight Open Circuit OLP Oxygen Low Pressure O&C Operations Control Center OM Outer Marker: Outer Marker Beacon: Optical Master: OCB Oil Circuit Breaker Operating Memory OCC Operatio. Control Center O&M Operations and Maintenance OCDMS On-Board Checkout and Data Management System OMA Optical Mechanical Assembly OCDU Optical Coupling Display Unit OMB Outer Marker Beacon OCL Obstacle Clearance Limit OMBI Observation-Measurement- Balancing and OCMS On-Board Checkout and Monitoring System Installation OCP Obstacle Clearance Panel: Operating Control Procedure: Operational Checkout Procedure: Orbital OME Orbital Maneuvering Engine Correction Program omni Omnidirectional OCPS Oxygen Cabin Pressurization Section OMPS Orbit Maneuvering Propulsion system OCR Overhaul Component Requirement OMS Orbitdl Maneuvering System: Operational Monitoring OCS Obstacle Clearing Surface: Operational Characteristics System ocst Overcast OMU Optical Measuring Unit 859 ON(clear) ABBREVIATIONS AND ACRONYMS ON(clear) Octane Number OTE Operational Test Equipment ONERA Office National d'Etudes et do Recherches OTF Optimum Traffice Frequency Airospatiales OTHR Over the Horizon Radar ONR Operational Non-Radar Directed Flights OTIS Offset Target Indicator System OOS Orbit-to-Orbit Shuttle OTL Operating Time Log O/P Output OTP Operational Test Procedure O&P Operations and Procedures otpt Output OPADEC Optical Particle Decoy OTF Optical Tracking OPS Oxidizer Preburner OTS Orbital Transport Systems; Optical Technology Satellite: Operational Test Site; Oxygen Test Stand: OPDAR Optical Detection and Ranging Over the Shoulder OPH Operational Propellant Handling OTT One Time Tape OPL Operations Plan OTU Operational Test Unit opn Operation: Open OTV Operational Television opp Opposite OUD Operational Use Date OPP CE Opposite Commutator End outbd Outboard OPPLAN Operation Plan outg Outage OPR Operate: Overall Pressure Ratio OV Orbiting Vehicle OPS Oxygen Purge System ovbd Overboard OPSF Orbital Propellant Storage Facility ovhd Overhead opt Optimal: Optical: Optimum ovid Overload OPTEVFOR Operational Test and Evaluation Forces ovrd Override OpW Operating Weight ovv Overvoltage OQ Aerial Target - Non Man Carrying OW Open Wire (Line) OQC Outside Ouality Control OWF Optimum Working Frequency OR Operational Readiness: Operations Requirements. OWS Operational Weather Support Overload Relay. Operations Research: Other Ranks. OXH Oxygen Heat Exchanger Outside Radius O/R Override oz Ounce O&R Overhaul & Repair oz-ft Ounce-Foot ORA Output Reference Axis: Operational Radar Directed oz-in Ounce-Inch Flights p ORAN Orbital Analysis ORB Orbital: Omnidirectional Radio Beacon PA Power Amplifer: Pad Abort: Public Address System: ORD Ordnance: Operational Readiness Date Patrol Aircraft: Probability of Acceptance ORDIR Omnirange Digital Radar P/A Polar to Analog(ue) ORDIV Omnirange Detection Radar PAC Primary Address Code; Package Attitude Control ordn Ordnance PACE Prelaunch Automatic Checkout Equipment: Preflight ORI Operational Readiness Inspection Acceptance Checkout Equipment OR Oprtinal ReeadiLn es tion PACOR Passive Correlation and Ranging System ORLA Optimum Repair Levelat PAD Propellant Actuated Device ORLA Opeatium ReainLev TPAs DAR Passive Detection & Ranging ORT Operations Reediness Test ORV Orbital Rescue Vehicle PADLOC Passive Detection & Location of Countermearures OS Oil Switch: Operational Sequence; Oversize PADRE Portable Automatic Data Recording Equipment osc Oscillator: Oscilloscope PADS Passive-Active Data Simulation OSE Operating Support Equipment PAE Port of Aerial Embarkation OSL Outstanding Leg PAGEOS Passive Geodetic Earth Orbiting Satellite OSO Orbital Solar Observatory PAL Parts Authorization List OSP Off-Shore Procurement; Optimized Simplex Processor PAM Parametric Amplifier; Pulse Amplitude Modulation OSR Optical Solar Reflector PAN Peroxy-Acyl Nitrate OSS Oribital Space Station; Operational Storage Site; PAP Pierced Aluminium Plank Optical Subsystem OSTD Ordnance Standards PAR Precision Approach Radar: Pulse Acquisition Radar: OSV Ocean Station Vessel; Orbital Support Vehicle Probabilistic Analysis of Risk OT Oil Tight: Overall Test: Observertarget: Optical pare Parachute Tracking: Organization Table. Operational Trajectory PARADE Passive-Active Ranging and Determination 0/“ Overtime: Overtemperature pardgl Paraglider OTA Optical Telescope Assembly pare(s) Parameter(s) 860 ABC:TIATIONS AND ACRONYMS PLAADS PARC Progressive Aircraft Reconditioning Cycle PELLS Precision Emitter Location: Strike System PARD Pilot Airborne Recovery Device PEM Photographic Equipment and Materi, PARS(. Pararescue PEP Peek Envelope Power: Platform Elei~trrinic Packages par-Partial PERT Programme Evaluation and Review )Itdinique par' aavn PES Photoelectric Scanner; Pointing Error Slensor PET Position- Event-Time. Polyethylene Tereghithalate: PAS Primary Alert System; Pyrotechnics Arming Switch: Point of Equal Time Pilt Asis SevoOF Power Factor: Preflight: Pneumatic Float: Proximity PAT Production Acceptance Test fuse: Pulse Frequency PATE Programimed Automatic Ttst Equipment pF Picofared PALI Pilotless Aircmrft Unit PFI Power Failure Indicator PAY Pressure Altitude Vwaition lirLY Pressure Fed Launch Vehicle PS Playbank: Patrol Bomb~ing: Patol Bomlher il'M Power Factor Meter: Precision Frequency Multivider: PBRu teioynndenRe ui~iP–cisin Bmbig RngePulse Frequency Modulation Pas P yndain e B u in ulis r cisio Bo bi g Ra g S Position Fixing Navigation System PBSPreabrciatutdin oic urf:4PFhR Parts Failure flate Preflight Review PC Pilotage Chart PFRE #,#ii'-nniry Flight Readiness Test: Preliminary Flight P/C Polar to Cartesian ~R.'ig Test PCB Plenum Chamber Burning P. Piz~ .4;Lnt Feed System: Percent Full Scale PCM Pulse Code Modulation Prki Pir,.lytic Graphite. Pressure Gauge: Propellent Grain PCP Pressurization Conlrol Pane.' PGA Pressure Garment Assembly: Power Generating PCR Pneumatic Cont-oi Regulator PGMA oLi5-1ysMea r PCSC Power Cord-tioninij 4iwtcing a3 Ctntrol P(GNCS Puin –. GriJance & Navigation Control System ptP-rcent PGNS r~.Qrji- \ividawIu ind Navigation System PCIC I-yrco' chni-: Circtut 79st Coiia 2e PGS !- -war inarator Section; Power Generation System PCU 'r.~.j:e C.intraI in PGSU Prooelli~ -_3as Supply Unit PCV Pressure cor.1-rj.0 PGO Oreszi.re Gas Umbilical PO Pitch Diamc-tsr: P:ei~nii, Psugn: Propellant Protci~:an Guidance Re-Entry Vehicle Dispers:on: P,;int D'ttons mngP: ;,~Dupot: Presrimw Drop: Pulse Oi.)i.tior- ;… Alkaline-Acid Balance PDA Precision Drive A.-: “te-Dtiliviry' Acceptaiice; Power Ph' Preflight Heat Exchanger: Aviation P01 Handli i.: Distribution Assay: Piurn Dri-a i.aseriibly Equipment PDC Power Distribution Ctairc.1 PHI Position-and- Homing Indicator PDF Point Detonating Fuse PHIN Position-and- Homing Inertial Navigator PDG Precision Drop Glider PI Photo Interpreter: Public Information: Point Initiating PDI #'ictorial Dwiiation Indicator: Pilot's Direction (fuses); Principal Investigdtor Iridicator: Powered Desceint Initiatinn P 1. Pre,*astallation Acceptance PDM Pulse Duration Modulation PICRS Program Information Control and Retrieval System PDMS Point Defence Missile System PIF Pilots' Information File POP Program Definition Phase PIGA Pendulous Integrating Gyro Accelerometer PDR Precision Depth Recorder: Preliminary Design PIM Position and Intended Movement Rp-jipw; ?hose Data Recorder: Predetermined Iroute PlO Pilot Induced Oscillation PD3 rowes Debtribution Systenm. Propelldnt Liiepersion PIP ?roduction Instrumentation Package system P!;,). Pulsed Integrating Pendulous Accelerometer: Pulse PDSD Point Detonating C elf-Destroying Integrating Pendulum Assembly PO50 Point Detonating ' iper-Quick Fuse PIR Pressure Ignition Rocket POT Pilot Distribution frailer: Power Distribution Trailer PIREP Pilot Report P06 Precision Drop Glider PIT Pre- Installation Test PDR Processed Data Recorder: Preliminary Design Review PlY Peak Inverse Voltage: Propellant Isolation Valve PDRM Payloao Deployment and Retrieval Mechanism PDU Pressure Distributio- Unit. Pilot's Display Unit. pix Pictures Primer Deton*.v, Unit: Photomultiplier Detector Unit PIXEL Picture Element n%.P.At Down Vent Line pkg Package: Parking PE Permanent Ech-u. Probable Enri;r Fiastic Exptosive PL Perceived Level: Prelaunch: Pro-longitudinal; P&E Pyrotechnical & Eyp j.ve Propellant Loading: Payload: Parts List; Plate; Port F-EC Personal Equipmnent Connector: Personal Landing Environmental Connectoi P/L Payload: Parts List PECS r~ortable E~nvironmental Control System PLA Physiological Learning Aptitude PEEK i'eriodi,-'lv Elevated Electronic Kibbitzer PLAADS Parachute Low Altitude Aerial Delivery System 861 PLAAR ABBREVIATIONS AND ACRONYMS PLAAR Packages Liqdid Air-Augmented Rocket PODS Post Operative. Destruct System PLACE Programming Language for Automatic Checkcut POE Port of Embarkation Equipment POI Parking Orbit Insertion PLADS Parachute Low Altitude Delivery System POINTER Particle Orientation Interfercmeter PLC Power-Line Carriei POL Petroleum Oil Lubricants: Polarity PLCOP Pre-Launch Checkout Plan POM Printer Output Microfilm PLCU Propellant Level Control Unit POMI Preliminary Operating & Maintenance Instruction PLE Prudent Limit of Endjrance POP Payload Optimized Program; Perpendicular to Orbit Plane PLF Parachute Landing Fall porep Position Report PLH Payload Handling POSS Passive Optical Satellite Surveillance System PLL Phase-Locked Loop pot Potential. Potentiometer PLM Pre-Launch Monitor: Preliminary: Production Maintenance: Line POTS Precision Optical Tracking System Monitoring Payload Menugement: Payload PP Project Proposal: Peak to Peak: Power Plant: Pressure Proof; Propulsion Power: Principal Point: PLN Flight Plan Push-Pull: Partial Pressure; Preproduction PLOP Pressure Line of Position P/P Point to Point; Peak to Peak PLPS Propellant Loading and Pressurization System p.p Push-Pul! PLRACTA Position Location. Reporting, and Control of Tactical PPB Plaining Programming Budgeting Aircraft PPBS Positive Pressure Breathing System PLRS Position Location and Reporting System PPCE Portable Pneumatic Checkout Equipment PS Propellant Loading System PPB Propulsion & Power Generation PLSS Portable Life Suppc't System PLV Post-Landing Ventilation PPH Pounds Per Hour PLVC Post-Landing Vent Control PPI Plan Position Indicator PM Pounds Per Minute: Propulsion Module: Permanent PPL Preferred Parts List; Predictive Period Laser Magnet: Phase Modulation; Pulse Modulation: PPLS Propellant and Pressurant Loading System Photomultiplier: Propellant Management PPM Pounds Per Minute: Parts Per Million: Phaso Pulse PMEE Prime Mission Electronic Equipment Modulation: Pulse-Position Modulation PMC Payload Monitoring & Control PPR Prior Permission Required PMI Preventive Maintenance Inspection PPS Primary Propulsion System; Precision Positioning PMM Pulse Mode Multiplex System: Pulses Per Second: Pneumatic Power pmma Polymethylmethacrylate Subsystem PMP Premodulation Processor; Preventive Maintenance PQL Production Quality Control Plan: Program Management Plan; Pump: Protective PQGS Propellant Quantity Gauging System Mob;hzatiun Plan PMR Pressure Modulation Radiometer: Programmed POP Prequalification Prototype Mixture Ratio PR Pulse Rate: Pressure Regulator: Pair: Photographic PMRR Pre-Mate Readiness Review Reconnaissance PMS Performance Monitoring System PRA Pendulous Refereiice Axis: Precision Axis PMSS Precision Measuring Subsystem PRADS Parachute Retrorocket, Androp System PMT Photomultiplier Tube P/RCS Propulsion :-nd Reaction Control Subsystem PMU Pressure Measuring Unit preamp Preamplifier PN Pulse Network; Part Number prefab Prefabricated P/N Part Number prefit Preflight p-n Positive-Negative PRF Proof: Pulse Repetition Frequency, Pulse Radar PNC Preferred Noise Criteria Curves Frequency: Pulse Recurrence Frequency PNdB Perceived Noise Decibels PRFL Pressure Fed Liquid PNE Peaceful Nuclear Explosives PRI Pulse Recurrence Interval: Photographic PNGCS Primary Navigation. Guidance and Control System Reconnaissance and Interpretation PNL Perceived Noise Level PRM Pulse-Rate Modulation PNLT Tone Corrected Perceived Noise Level PRN Pseudo-Random Noise: Pulse Ranging Network PNM Pulse Number Modulation PROFAC Propulsive Fluid Accumulator PNR Point of No Return PROVER Procurement, Value, Economy, Reliability PO Polarity; Power Oscillator; Power Output PRR Pulse Repetition Rate POBATO Propellant On-Board at Take-Off ROD Pneumatically Operated Disconnect: Port of PRS Primary Recovery Site Debarkation PRT Pulse Repetition Time; Pressure Ratio Transducer PODM Preliminary Orbit Determination Methods PRV Pressure Reducing Valve 862 I ABBREVIATIONS AND ACRONYMS QVT PS Pressure Sensor; Payload Support: Power Source: PVC Position and Velocity Computer; Polyvinyl Chloride: Payload Shroud; Power Supply: Propellant Supply: Pressure Volume Compensator Photometer System: Press to Shprt; Program Short; PVR Precision Voltage Reference Pulse Sensor PV RAM Progressive Valve Rom P/S Pulse Sensor PVS Performance “enfication System PSA Power Servo Amplifier PTV Pressure Volume Temperature; Probe Velocity PSAP Plane Stress Analysis and Plots Transducer PSC Post Storage Checkout PW Pulse Width PSD Phase Sensitive Demodulator; Power Spectra Density PWB Prined Winng Board PSF Poundc Per Square Foot; Prime Subframe PWD Power Distribution: Powder PSF ratio Payload-Structure-Fuel Ratio PWF Propellant Weight Fraction PWI PSI Proximity Warning Indicator; Pilot's Warning Plan Speed Indicator; Pounds Per Square Inch Indicator PSIA Pounds Per Square Inch Absolute PWM Pulse Width Modulation PSID Pounds Per Square Inch (Differential) pwr Power PSIG Pounds Per Square Inch Gauge PWR SERVO Power and Servo Assembly PSK Phase Shift Keying PWS Portable Water System I' SL Pipe Sleeve PWT Propulsion Wind runnel PSM Propellant Storage Module PYPH Polyphase PSP Pierced Steel Plank; Persornal Survival Pack P-Y-R Pitch-Yaw-Roll PSPF Potential Single Point Failures pyre Pyrotechnic PSS Propulsion Support System; Propellant Supply P4SR A heat stress index defined in the dictionary Subsystem PST Point of Spiral Tangent O PSWR Power Standing Wave Ratio PT Pressure Transducer; Pneumatic Tube. Power Q Aerodyanmic Pressure; Mean Annoyance Level Transfer; Point of Tangent. Potential Transformer, QA Quality Assurance; Quick Acting Propellant Transfer PTA Pulse Torquing Assembly: Proposed Technical O/A Quality Assurance Approach QC Quality Control P/T Pressure Temperature QCE Quality Control Engineer PTC Portable Temperature Control. Pressure & 0CM Qusrtz Crystal Micro Balance Temperature Control. Propulsion Test Complex OD Quick Disconnect PPTTrI'EE PPoolylyteetrrea ffllumoarertyheyIlnen e o DM Magnetic bearing of an aircraft from a ground PTI Preliminary Test Information station PTIS Propulsion Test Instrumentation System QDR Reciprocal of 0DM PTM Proof Test Model. Pulse Tusne Modulation. Pulse Time Multiplex QEC Quick Engine Change PTMD Propellant Toxicity Monitoring Devices OF Quality Factor; Quick Firing PTMU Power & Temperature Monitor Unit Q factor In bombing, a factor representing the ratio ot the PPTTOP PProewfeerrr eTda kTea-rOgfeft; Proof Test Orbiter velocity of the differential ballistic wind to the Point velocity of the wind at release altitude PTPS Propellant Transfer Pressuriz3tion System (FE Aircraft altitude above intended landing place PTR Preliminary Test Report QI Quantity Indicator PTS Pneumatic Test Set. Propellant Transfer System; QIP Quality Inspection Point Prep-to-Ship QLDS Quick Look Data Station PTT Push-to-Talk QNH Aircraft altitude above sea level PTTI Precise Time and Time Interval QPL Qualified Product List PTV Parachute Test Vehicle. Pitch Thrust Vector ORC Quick Reaction Capability PTVC Pitch Thrust Vector Control QRSV/TOL Quiet. Reduced. Short, Vertical Take-Off and Landing PU Pick Up; Propellant Utilization; Propulsion Unit OSTOL Quiet Short Take-Off and Landing P/U Pick Up pub Publication qt Quadruple; Quart PUCS Propellant Utilization Control System qty Quantity PUFL Pump Fed Liquid qtz Quartz PUGS Propellant Utilizat;on Gauging System QUAD -our engine cluster. Quadrant PU System Propellant Utilization ystem QUEST Quality Electrical Systems Test PV Present Value QUESTOL Quiet Experimental Short Take-Off and Landing PVAC Peak Volts Alternating Current QVT Quality Verification Testing 863 – – — … r R ABBREVIATIONS AND ACRONYMS R RATF Radio Teletype: Radio Teletypewriter RB Radar Beacon; Relative Bearing; Reconnaissance R Range: Rollout; Routine; Rankine: Roentgens Bomber RA Right Ascension: Reliability Assessment R/B Radar Beacon (RB is Preferred) R/A Right Ascension: Radius of Action: Radioactive: RBA Recovery Beacon Antenna (VHF) Radar Altimeter RBC Redundant Battery Charger RAAWS Radar Altitude and Warning System RBDE Radar Bright Display Equipment RAC Reliability Assessment of Components RBE Radiation Biological Effectiveness RACC Radiation and Contamination Control RBN Radio Beacon Omnidirectional RACE Rapid Automatic Checkout Equipment RBP Return Battery Pack RACEP Random Access & Correlation for Extended ROR Radar Boresight Range Performance RBS Random Barrage System: Recoverable Booster RACON Radar Beacon System: Radar Bomb Scoring; Radar Bombardment RACS Remote Automatic rontrol System RBV Return Beam Vidicon (Camera) RAD Radiation. Requirements Action Directive: Radial. RC Resistance Capacitor: Remote Control: Reverse Radiator; Radiation Absorbed Pose; Radian: Current Research and Advanced Development R/C Radio Command; Rad:o Control: Rate of Climb: RADA Random Access Discrete Address Range Clearance RADAC Radar Analog Digital Data and Control RCAT Radio Controlled Airplane Target RADAR Radio Detection & Ranging RCB Ready Crew Building RADATA Radar Data Transmission & Assembly RCC Rescue Co-ordination Centre; Rescue Control Center RADCM Radar Countermeasures and Deception RCCB Remote Control Circuit Breaker RADEM Random Access Delta Modulation RCDR Recorder RADFAC Radiating Facility RCI Radar Coverage Indicator RADHAZ Radiation Hazards RCL Reliability Control Level RADI Radiographic Inspection: Radiation Inspection RCM Radar Countermeasure(s); Radio-Controlled Mine RADIAC Radioactivity Detection and Computation RC/OC Reverse Current/Overcurrent RADOT Real Time Automatic Digital RCP Right Circular Polarization: Remote Control Panel RadSo Radiological Survey Officer rcpt Receipt RADVS Radar Altimeter and Doppler Velocity Sensor RCS Reaction Control System: Re-Entry Control System; RAE Range Azimuth Elevation Remote Control Center RAGF Remote Air/Ground Facility RCTSR Radio Code Test. Speed of Response RAI Roll Attitude Indicator RCU Remote Control Unit RAIDS Rapid Availability of Information and Data for Safety RCV Radar Control Van RAILS Remote Area Instrument Landing Sensor RCZ Rear Combat Zone RAIS Range Automated Information System R & D Research and Development RAM Random Access Measurement: Random Access Memory: Radar Absorbing Material; Radio RD Radiation Detection: Rupture Disk Attenuation Measurements; Remote Area Monitoring RDB Research and Development Board: Radar Decoy RAMIS Rapid Automatic Malfunction Isolation System Balloon RaOb Radiosonde Observation RDD Required Delivery Date RAP RRiable Acoustic Path: Rocket Assisted PRojectile RDF Early SecurityCode for Radar-, Radio Direction RAPCON Radar Approach Control Center Finding RAPEC Rocket Assisted Personnel Ejection Catapult RDMU Range-Drift Measuring Unit RAR Reliability Action Report RD & P Research, Development and Production RARE Ram Air Rocket Engine rdr Radar RAS Rectified Airspeed RDR INT Radar Intermittent RASERS Radio Amplification by Simulated Emission of RDRBCN Radar Beacon Radiation RASM Remote Analog(ue) Submultiplexer 5g red~signate RASSR Reliable Advanced Solid State Radar RDSM Remote Digital Submultiplexer RAT Rocket Assisted Torpedo: Reliability Assurance Test RDTE Research. Development, Text & Evaluation RATA Rankine Cycle Air Turboaccelerator rdvu Rendez-Vous RATAC Radar Target Acquisition RDX Cyclonite RATAN Radar and Television Aid to Navigation RDY Ready RATCC Radar Air Traffic Control Center R/E Re-Entry RATO Rocket-Assisted Take-Off READI Rocket Engine Analyzer & Decision Instrumentation 864 RRS ABBREVIATIONS AND ACRONYMS Rebecca A particular form of airborne interrogator and RHR Roughness Height Rating: Reheater responsor R/HR Roentgen Per Hour RECAT Reduced Energy Consumption for Commercial Air R & I Receiving and Inspection Transport RIF Reduction In Force RECCE or Reconnaissance RI.FI-Meter Radio Interference and Field Intensity Meter RECON RIG Rate Integrating Gyro; Radio Inertial Guidance reed Received RIGS Runway Idontifiers and Glide Slope recm Recommend RIN Regular Inertial Navigator RECON Remote Control: Reconnaissance RIPS Radio Isotope Power System RECP Receptaclo RISE Research In Supersonic Environment ref Reference RIST Radar Installed System Tester regen Regenerate rm Ramjet reht Reheat RJB Relay Junction Box REe Radio Electrcian RJS Reaction Jet System REM Roentgen Equivalent Man: Removable; Reliability R/L Redline Engineering Model: Reaction Engine Module RLBM Rearward Launched Ballistic Missiles REMCO Rear Echelon Maintenance Combined Operation RI.F Remote Lilt Fan RL,! Radius of Landing Site RENDZecoverale Launch Vehicle Structure RENE Rocket Engine/Nozzle Ejector n Rel rly Relay REP Range Error Probability RMI Radio Magnetic Indicator RepCAT Report Corrective Action Taken RML Radar Microwave Link RESCU Rocket Ejector Seat. Catapult Upward: Radio Emergency Search Communications Unit RMS Root Mean Square rmt Remote RESS Radar Echo Simulation Subsystem RMU Remote Mafneuvering Unit: Remote Multiplexer Unit REST Re-Entry Environment & Systems Technology RNAV Area Navigation REV Re-Entry Vehicle. Reverse: Revolution mg Range RF Reconnaissance Fighter: Radio Frequency: RNS Reusable Nuclear Shuttle Representative Fraction RNV Reusable Nuclear Vehicle R/F Reserve Forces RO Range Operations; Reed-Out: Radar Operator R/O Read-Out RFB Request forBi d ROBIN Rocket Balloon Instrument RFC Radio Facility Charts ROBO Rocket Bomber RFI Radio Frequency Interference ROC Re-Usable Orbital Carrier rfI Refuel ROD Rate Of Descent rf Refuell ROLS Recoverable Orbital Launch System RFM Refuelling Mision: Reactive Factor Meter ROMANS Remote Manipulation Systems RF1A Red Fuming Nitr;c Acid RON Remain Overnight RFP Request for Proposal ROT Re-Usable Orbital Transport: Rotation RFQ Request for Quote ROTE Range Optical Tracking Equipment RG Rate Gyroscope ROTI Recording Optical Tracking Instrument RGA Rate Gyro Astoembly ROV Remote Operated Valve AGE Relative Gas Expansion RPI Radar Precipitation Integrator; Roll Position Indicator RGP Rate Gyro Package RPM Rate Per Minute: Revolutions Per Minute; Roll RGS Rocket Guidance System; Radio Guidance System: Positioning Mechanism Rate Gyro System RPRV Remotely Piloted Research Vehicle RGU Rate Gyro Unit RPS Revolutions Per Second RH Relative Humidity: Right Hand rpt Report: Repeat RHAW Radar Homing And Warning RPU Radio Propagation Unit; Remote Processing Unit RHC Rotation Hand Control: Right Hand Circular RHCP Right Hand Circular Polarization RPV Remotely Piloted Vehicle rhd Railhead R & QA Reliability & Quality Assurance RHE RuJiation Hazard Effects rqts Requirements rheo Rheostat RRI Range Rate Indicator RHI Range Height Indicator RAS Retrograde Rocket System; Restraiut Release System 865 RRT ABBREV;ATIONS AND ACRONYMS RRT Rendezvous Radar Transponder RV Rear View: Relief Valve; Re-Entry Vehicle: Reconnaissance Vehicle: Rendez-Vous Vehicle RS Range Safety RN Re-Entry Vehicle; Rendez-Vous R/S Remote Site; Range Safety RVCF Remote Vehicle Checkout Facility RSB Range Safety Beacon RVM Reactive Voltmeter: Re-Entry Vehicle Module Range Safety Control' Range Safety Command RVP Reid Vapour Pressure RSCS Rate Stabilization and ;ontrol System RVR Runway Visibility Range; Runway Visual Range RSDP Remote Site Data Processing RVTO Roll Vertical Takeoff RSDS Range Safety Destruct System RVTOL Rolling Vertical Take-Off and Landing RSG Rate Signal Generator RW Radiological Warfare RSI Re-Usable Surface Insulation: Roll Stability Indicator R/W Right of Way RSLP Recommended Spare Parts List RWD Radar Warning Installation ran Resonate rx Receiver RSP Roll Stabilized Platform RZ Return to Zero rsq Rescue R&Z Range and Zero RSR Route Surveillance Radar RSRA Rotor System Research Aircraft. S RSS Root Sum Squar6: Relaxed Static Stability SA Shaft Angle: Speaker Amplifier; Solar Array. RSSK Rigid Seat Survival Kit Surface/Air; Simple Alert: Semi-Automatic: Spin RSSS Reusable Space Shuttle System Axis RSTP Remote Site Telemetry Processor S/A Special Activities RSV Remove Shutoff Valve S&A Safe-and-Arm rsvr Reservoir SA.A. Small-Arms Ammunition RT Real Time: Radio Tracking: Reference Trajectory: SAB Same as Basic Reduction Table: Receive-Transmit: Radiotelephone SABRE Secure Airborne Radar Bombing Equipment, Search or Telephony: Run-Up and Taxi: Rocket Target and Rescue Beacon Equipment R/T Radio Telephone; Real Time; Receiver/Transmitter: SAC Strategic Air Command IUS Radio Telephony S/AC Stabilization and Attitude Control RTB Return to Base SACMAP Selective Automatic Computational Matching & RTC Radio Transmission Control; Real Time Command Positioning System RTCC Real Time Computation Center SADIE Semi-Automatic Decentralized Intercept Environment RTCE Rotation/Translation Control Electronics S.A E. Society of Automotive Engineers RTCP Real Time Communications Processors SAGE Semi-Autorn3tic Ground Environmert RTD RealTime Display SAGW Surface-to-Air Guided Weapon RTE Regenerative Turboprop Engines SAH Semi-Active Homing rtf radiotelephone SAINT Satellite Interceptor RTG Radiotelegraph: Radioisotopic Thermoelectric SAM Signal Aialyzing Monitor: Special Air Mission; Generator: Radioisotopic Thermal Generator: Running Surface toAnir Missile Take-Off Autogyro SAMOS Satellte & Misse Observation System: Satellite and rtg Rating Missile Observation Satelte RTIP Radar Target Identification Point SAP Sintered Aluminum Powder: Seni-Armor Piercing RTLS Return to Launch Site SAPI Semi-Armour Piercing ncendiar RTM Reconnaissance Tactical Missile Followed by Designator No.); Running Time Meter SAR Search and Rescue: Synthetic Aperture Radar: rtn Return: Retain System Array Radar RTO Rejected Take-Off SARAH Search and Res-ue and Homing RTS Radar Target Simulator: Radar Tracking Station: SARIE Selective Automatic Radar Identification Equipment Remote Tracking Station SARPS Standards and Recommended Practices rtt Radio Teletypewriter SARS Single-Axis Reference System RTo Real Time Telemetry Data SAS Solar Array System; Space Activity Suit; Sample RTTS Real Time Transmission System Array System: Stability Augmentation System RTTV Real Time Television SAT Satisfactory: Saturate: Systems Acceptance Tests RTTY Radio Teletype SATAN Sensor for Airborne Terrain Analysis RN Re-Entry Test Vehicle: Research Test Vehicle: Room SATCO Senior Air Traffic Control Officer Temperature Vulcanizing RU Roughness Unit: Refrigeration Unit SATCOM Satellite Communications R & U Repairs and Utilities SAT GCI Satellite Ground Controlled Interception RUCS Rectangular Uniform Chromaticity Scale SATIN Sage Air Traffic Integration 866 ABBREVIATIONS AND ACRONYMS SF SAtk Strike Attack SCR THD Screw Thread SATS Short Airfield for Tactical Support SCS Signal Communications System: Stabilization and SBBControl System; Spacecraft System; Standard SB S-Band: Sleeve Bearing; Splash Block; Space Base Coordinate System; Simulation Control Sub-System: SBA Standard Beam Approach; Standaid Blind Approach Signal Conditioning System; Sequence Control SBHC Speed Brake Hand Control System SCSCO Secure Submarine Communications SBILS Scanning Beam Instrument Landing System SCSS Satellite Communications System Control SBL Standard Beam Landing SCT Scanning Telescope sbn Spaceborne SCU Static Checkout Unit; Sequence Control Unit; SBR Standard Budy Rate (Air Traffic Control) Statistical Control Unit sbtg Sabotage SCUBA Self Contained Underwater Breathing Apparatus SBX S-Band Transponder SD Self-Destroying (Ammunition); Standard Deviation: Structural Dynamics sby Standby SDA Shaft Drive Axis SC Short Circuited: Statistical Control: Stratocumulus: SDC Signal Data Converter Shaped Charge: Spacecraft: Strip Chart S/CSDESG Strap-Down Electrically Suspended Gyro SDF Simplified Direction Facility. Single Degree of S&C Signal & Conditioning: Stabilization and Control Freedom SCA Sequence Control Area: Signal Conditioning SDP Site Data Processor Assembly. Spacecraft Adapter -dr Sender SCALE Space Checkout & Launch Eq,)ipment SOS Safety Data Sheet: Simulation Data Subsystem. SCAM Subsonic Cruise Attack Missile System Data Synthesizer SCAMP Sperry Computer Aided Message Processor SDSS Self-Deploying Space Station SCAN Self Correcting Automatic Navigation: Switched SDW Standing Detonation Wave Circuit Automatic Network SCAP Silent Compact Auxiliary Power SE Support Equipment: System Element: Single Engine SEA Spherical Electrostatic Analyzer SCAPE Self Contained Atmospheric Protective Ensemble SEALS Severe Environmental Air Launch Stud,. SCAR Sub-Caliber Aircraft Rocket: Satellite Capture and Retrieval SEATO Southeast Asia Treaty Organization SCAT Security Control of Air Traffic: Space Communication SEC Secondary Electron Conduction (Vidicon tube): and Tracking: Speed Control Approach/Take-Off; Second Supersonic Commercial Air Transport; Solid Catalysts SECANT Separation Control of Aircraft by Nonsynchronous SCATER Security Control of Air Traffic and Electromagnetic Techniques Radiations SECO Sequential Control SCATS Simulation Checkout and Training System SECPS Secondary Propulsion System SCC Stress Corrosion Cracking: Standard Cubic SEDS Sequential Dual-Scanning System: Space Electronics Centimeter Detection System SCE Sienal Condit;oning Equipment SEEL Special Weapons Equipment List SCEA Signal Conditioning Electronics Assembly SE& Systems Engineering & Integration SCFM Standard Cubic Feet Per Minute SEM Space Environment Monitor: Scanning Electron SCG Sequential Control Guidance Microscope SCGSS Supb:-Criti,:al Gas Storage Systen SEMLAM Snmi-Conductor Laser Amplifier SCIM Standard Cubic Inch Per Minute SEMLAT Semi-Conductor Laser Array Techniques SCIP Self-Contained Instrument Package SENEL Single Event Noise Exposure Level SCM Signal Conditioning Module: Service Command SENL Standard Equipment Nomenclature List Module SEP Solar Electric Propulsion: Surface Electrical SCN Specification Change Notice Properties SCNR Solid-Core Nuclear Rocket SERJ Space Electric Ramjet SCO Subcarrier Oscillator: Spacecraft Operations SER NO Serial Number SCOMO Satellite Collection of Meteorological Observations SERPS Service Propulsion System SCOR Self-Calibrating Omnirange SERT Space Electric Rocket Test SCORE Signal Communications by Orbiting Relay Equipment SERV Single-Stage Earth-Orbital Re-Usable Vehicle SCOTS System Checkout Test Set SET Solar Energy Thermionic SCP Spherical Candlepower: Survey Control Point SCPt Security Control Point SETA Simplfed Electron Trackig Apparatus SCR Silicone Controlled Rectifier; Selective Chopper SETS Solar Energy Thermionic Conversion System Radiometer: Solar Cosmic Rays SEW Sonar Early Warning SCRAMJET Supersonic Combustion Ramjet SF Secondary Failure; Scale Factor 867 ,!..-~ -, ~ ~ ~ – —-..– - - - - - - - - - S/F ABBREVIATIONS AND ACRONYMS S/F Safety Factor SLAM Space Launched Air Missile: Supersonic Low SFB Structural Feed Back Altitude Missile SFC SLANT Simulator Landing Attachment for Night Landing ~TSrpeaciifnic iFnuegl Consumption Tann SFE Scale Factor Error SLAR Side Looking Airborne Radar sfgd Safeguard SLBM Sub-Marine Launched, Ballistic Missile; Sea SFNA Stabilized Fuming Nitric Acid Launched Ballistic Missile SFO Service Fuel Oil SLEW Static Load Error Washout System SSLI Sea Level Indicator SFP Single Failure Point SLOS Star Line-of-Sight; Scanning Line of Sight SFPA Single Failure Point Analysis SLR Side-Looking Radar; Solar ” SFFTT SmltdFihTetSLSSi mulated Flight Test Sea Level Static: Sidelobe Suppression SG Strain Gauge: Surgeon General; Sm'ke Generator SIT Sia ed auch Te S SLT Simulated Launch Test SGLS Space Ground Link System SLV Standard Launch Vehicle; Satellite Launching SGT Satellite Ground Terminal Vehicle; Space Launch Vehicle SHA Sidereal Hour Angle SM Service Module: Strategic Missile; Solar Magnetospheric SH ABS Shock Absorber S/M Service Module SHe Supercritical Helium S & M Sequencer and Monitor SHEP Solar High Energy Particles SMAF Special Mission Aircraft Flights SHF Super-High Frequency SMART Satellite Maintenance & Repair Techniques SHIELD Sylvania High Intelligence Electronic Defense SMCC Simulation Monitor and Control Console SHIRAN S-Band of High Precision Short Range Electronic SMD Systems Measuring Device Navigation SMM Spectral Matrix Method SHORAD Short Range Air Defence SMMD Specimen Mass Measurement Device SHORAN Short Range Aid to Navigation; Short Range SMMR Scanning Multispectral Microwave Radiometer Navigation SMRD Spin Motor Rotation Detector shp Shaft Horsepower SHR Solar Heat Reflecting SMS Synchronous-Altitude Meteorological Satellite SI Situation Index SMT Square Mesh Tracking SIAM Signal Information and Monitoring S/N Signal-to-Noise Ratio: Serial Number SIBS Stellar-Inertial Bombing System SNAP Systems For Nuclear Auxiliary Power SICO Switched in Fo; Checkout SNL Standard Nomenclature List SID Synchronous Identification Systcm; Standard SNOWCAT Support of Nuclear Operations with Conventional Air Instrument Departure; Sudden Ionospheric Tactics Disturbance SNR Signal-to-Noise Ratio SIDS Stellar Inertial Doppler System S/ Switchover: Shutoff SIF Selective Identification Feature: Special Identification Feature: Switched In-Flight SOA State-of-the-Art: Speed of Advance sig Signal SOAP Self-Optimizing Automatic Pilot SIL Speech Interference Level SOAR Safe Operating Area SIM Scientific Instrument Module; Simulated SOCO Switched Out For Checkout SIMCHE Sire,,' ”-q and Checkout Equipment SOCOM Solar Optical Communications System SIMICORE Simultaneous Multiple Image Correlation SOcs Spacecraft-Orientation-Control System SIO Staged in Orbit SOEP Solar-Oriented Experiment Package SIP Standard Inspection Procedure SIR Simultaneous Impact Rate. Strip Inspection Report SIRS Satellite Infrared Spectrometer 506 Speed Made Good Over Ground SIS SSatteel lite Interceptor System: Speaker Intercom Sol Standard Operating Instruction: Space Object SysteIdentification: Specific Operating Instruction SIT Software Integration Test Sol Solenoid: Solar SITE Spacecraft Instrumentation Test Equipment SOLARIS S'ibmerged Object Locating & SITS Sage Intercept Target Simulation Retrieving/Identification System SITVC Secondary Injection Thrust Vector Control SOLO Selective Optical Lock On . SJR Single Jet-Driven Rotor SOLRAD Solar Radiation sked Schedule SONAR Sound Navigation & Ranging SL Sea Level; Service Life SONCM Sonar Countermeasures and Deception S/L Sound Locator sono Sonobuoy SLAG Safe Launch Angle Gate SONOAN Sonic Noise Analyzer 868 ABBREVIATIONS AND ACRONYMS stab SOP Strategic Orbit Point: Safety Operating Procedure: SRA Simultaneous. Range Adcock Antenna; Spin Standard Operating Procedure: Secondary Oxygen Reference Axis: Surveillance Radar Approach Pack SRAM Short Range Attack Missile SOR Specific Operational Requirement: Stable Orbit SRB Solid Rocket Booster Rendez-Vous SRBM Short Range Ballistic Missile SORAD Sonic Ranging & Detection Sound Ranging Control SORTI Satellite Orbital Track & Intercept SRE Surveillance Radar Equipment; Single Round SOS Stabilized Optical Sight Effectiveness: Surveillance Radar Element SOSTEL Solid-State Electronic Logic SRG Short Range SOTIM Sonic Observation of the Trajectory & Impact of SRGM Short Range Guided Missile Missiles SRM Solid Rocket Motor: Strategic Reconnaissance SOV Shut-Off Valve Missile SOW Statement of Work SRS Space Recovery Systems: Secure Range Safety: Search and Rescue Ship: Small Research Satellite: SP Single Pole: Solid Propellant: Short Period: System Satellite Radar Station Parameter: Start Permission: Self-Propelled SRT Short Range Transpc.rt (Aircraft): Systems Readiness SPA Servo-Power Assembly: Signal Processing Assembly Test: System Reaction Time: Supporting Research SPAD Satellite Protection for Area Defense and Technology SPADATS Space Detection & Tracking System SIW Sub-Replacea Unit: Shop Replaceble Unit SPAN Solar Particle Alert Network: Spacecraft Analysis SRV Space Rescue Vehicle SPPoARNSRuArDve illance Superposed Panoramic Radar Display SS Submarine: Surface-to-Surface: Special Strike: Station: Standard Frequency Station: SPAR Seagoing Platform for Acoustic Research: Signal Strength: Single Sideband; Supersensitive: Surveillance and Precision Approach Radar Switch Selector: Space Station: Steady State: SPARES Space Radiation Evaluation System Subsolar: Space Shuttle SPARS Space Precision Attitude Reference System S/S Second Stage: Single Sideband: Samples Per SPASUR Space Surveillance System SSA SSepcaocned Suit Assembly SPOT Single-Pole Doule-Throw SPT inlePooeu leThowSSAR Spin Stabilized Aircraft Rocket SPE Solid Polymer Electrolyte: Static Phase Error: Special Purpose Equipment SSB Single Sideband: Bassile Missile Submarine (Diesel SPEC Specification Powered) SPEED Signal Processing in Evacuated Electronic Devices SSBAM Single Sideband Amplitude Modulation SSBN Ballistic Missile Submarine Nuclear Powered SPFA Single Point Failure Analysis SSBR Solid Strand Burning Rate SPG Single Point Ground SSC Simulated Spacecraft SPGG Sold Popnt Ga n e SSG Submarine. Guided Missile (Ciesel Powered) SPI Special Position Identification SSGN Nuclear Powered. Cruise Missile Submarine SPIRT Short Path Infrared Tester SSGW Surface-to-Surface Guided Weapon spkr Speaker SSI Standing Signal Instructions SPL Sound Pressure Level SSKD Single Shot Kill Probability SPM Self-Propelled Mount: Solar Proton Monitor SSLV Standard Spac Launch Vehicle SPMS Solar Particle Monitoring Systom SSM Surface-to-Surface Missile: Single Sideband Modulation: Space Station Module: Spread Spectrum SPR Solid Propellant Rucket Modulation SPRA Space Probe Radar Altimeter SSME Space Shuttle Main Engine SPRAM Solid Propellant Airaugmented Rocket Motcr SSPS Satellite Solar Power Station SPREE Solid Propulsion Rocket Exhaust Effects SSR Secondary Survelance Radar: Submarine. Radar SPRINT Solid Propellant Rocket Intercept Missile Picket SPS Secondary (Services) Propulsion System: Service SSRS Start-Stop-Restart System Propulsion System: Spacecraft Propulsion System: SSS Space Shuttle System; Small Scientific Satellitt: Samples Per Second: Secondary Power System: S tructe SubSystem Segi Suppti Sadron Signal Processing System Structures Subsystem; Strategic Suppor Squadron SPST Single-Pole Single-Throw SSSL Superson;c Split Line SPU Signal Processing Unit SST Supersonic Transport: Stainless Steel: Sea Surface SPUR Space Power Unit Reactor Temperature: Satellite-to-Satellite Tracking SPURT Spinning Unguided Rocket Trajectory SSV Spac Shuttle Vehicle SO FT Square Foot ST Short Ton: Star Tracker; Static SQ IN Square Inch S/T Start Tank SOR Sequence Rely S&T Science and Technology SR Short Range st Stratus S/R Send and Receive stab Stability: Stabilize 869 , JSTADAN ABBREVIATIONS AND ACRONYMS STADAN Satellite Tracking and Data Acquisition Network SYCATE Sympton-Cause-Test ST ANT Steerable Antenna syn Synthetic STAPAC Stabilization Package sync Synchronous STAR Stellar Attitude Reference: Standard Amval Route syncom Synchronous Communications Satellite STARAN Stellar Attitude Reference & Navigation systran Systems Analysis Translator STARS Satellite Telemety Automatic Reduction System T ST/B Shot Blasting stbd Starboard T Temperature STON Space Tracking Data Network tTbAT blt Target Area: Training Air Cooled: Throttle Angle tab Tabulate STC Sensitivity Time Control; Systems Test Complex TAC Total Average Cost; Turboalternator-Compressor; stcu Stratocumulus Tactical Air Coordinator STD Standard TACAN Tactical Air Navigation STD CFM Standard Cubic Feet Per Minute TACC Tactical Air Control Center STE Special Test Equipment: Spacecraft Test Engine: TACCAR Time Averaged Clutter Coherent Airborne Radar Support Test Equipment TACCO Tactical Coordinator STEM Storable Tubular Extendible Member TACH Tachometer star Steradian TACL Time and Cycle Log STF Static Test Facility TACOS Tactical Air Combat Simulation StgAr Staging Area TACP Tactical Air Control Party STgt Secondary Target TACR Time and Cycle Record STINGS Stellar Inertial Guidance System TACRON Tactical Air Control Squadron STLOS Star Une-of-Sight TACS Thruster Attitude Control System: Tactical Air Control System STM Structural Test Model TACSATCOM Tactical Satellite Communication STN Span TTAO Tactical Air Direction; Tactical Air Division: Training Aids Division: Target Area Designator STOGW Short Take-Off Gross Weight TAER Time. Azimuth. Elevation Range STOL Short Take-Off and Landing 1AF Tactical Air Force STP System Test Plan: Standard Tempearature and TAi Time tc-Auto-lCritici Pressure TAME Tactical Mistile Encounter STPIP Standard Taped Routiness for Image Processing TAO Tactical Ai Obe vacon STS Satelkte Tracking Station: Space Transportation TAP Telemetr Ac t Patern System TAP Telemetry Acceptance Pattern STTE Special-to-Type Test Equipment TAPE Tape Automatic Preparation Equipment: Tactical Air STU Systems Test Unit: Static Test Unit Power Evaluation STV Surveillance Television: Structural Test Vehicle: TAPS Tactical Area Positioning System Space Test Vehicle TAR TReadrraarin Avoidance Radar: Terminal-Area Surveifllance STWY StSoTpYw ayt pwyTARAN TFeosat and Re place as Necessary SUAS System for Upper Atmospheric Sounding TARE Teet a utac Recesa mn su SrfcetoUdewaerMisieTARE Teiemetry Automatic Reduction Equipment SUM Surfa ce to Underwater Missile TARS Three Axis Reference System: Terrain and Radar SUS Sound Under Water Signals Simulator SV safety Valve: Solenoid Valve: Space Vehicle: State TAS True Airspeed Vector SN Space Vehicle TASR Terminal Air Surveillance Radar SVFR Special VFR Flight TATC Terminal Air Traffic Control SVR Slant Visual Range TATI Total Air Teaerature Indicator S/VTOL Short/Vertical Take-Off md Landing (aircraft) TAV Test and Vatidakon SW Short Wave: Solar Wing: Switch TAZ Tactical Alen Zone SWB Short Wheelbase TB Terminal Board: Technical Bulletin: Time Base: swgr Swtchger TBTl Talkback: forpedo Bombing SWOP Structural Wiht Optimization Program T/B Talk Back SWP Safe Working Pressure TBA To Be Announced SWR Standing Wave Rato: Short Wavelength Radiation TBD To Be Determined SWS Solar Wind Spectrometer TBE Time Base Error SWI Supersonic Wind Tunnel TBF Tail Bomb Fuse; Torpedo Bomber Fighter SWW Severe Weather Warning TOM Tactical Ballistic Missile SXT Space Sextant TBO Time Between Overhaul 870 ABBREVIATIONS AND ACRONYMS therm TBS To Be Supplied: To Be Selected TOWT Transonic Dynamic Wind Tunnel TC Thrust Chamber: Terinioolor: TeSt Controller: Test TDX Torque Differential Transmitter Console: Tracking Camera: Thermal Control: Total TE Twin Engine: Task Element: Thermal Efficiency: Cost: True Course: Troop Carrier: Transport Cargo: Table of Equipment: Trailing Edge: Thermal Element: Tactical Command Timing Ele itronics T/C Thermocouple T/E Transporter.Erector TCA Thrust Chamber Assembly: Time oi Cosest TEC Tract Evaluation Computer: Ttal Electron Content: Approach: Temperature Control Assembly: Terminal Telemetry and Command Control Area TEl Tramearth Injection TCAL Total Calorimeter TEIC Tissue-Equivalent Ionization Chamber TCB Time Correlation Buffer TEJ Transverse Expansion Joint TCBM Trancontinental Ballistic Missile TEL Transporter Erector Launcher TCC Terminal Control Couiter: Transport Control Centre: tel Telemetry Tactical Control Console TELECON Telephone Conversation TCD Temetry Commard Data TELEDAC Telemetric Data Converter TCE Telemetry Checkout Equipment TELOPS Telemetry On-Line Processing System TCG Time Code Generator TELTA Tethered Lighter Than Air TCH Thrust Chambe TEM Transverse Electromagnetic TCI Terr a srance Indicator: Time Change Item temp Temporal: Temperature: Template TCL Time and Cycle Log TEMPISTORS Temperature Compensating Resistors TCM Theatre Combat Simulation TEMS Test Equipment Maintenance Set TCO Tom Control Officer TEP Trace Element Pattern T & C/O Test and Checkout 7ER Triple Ejection Rack: Tertiary TCOP Test and Checkout Plan term Terminate TCP Telemetry and Comms:d Processor: Thrust Chamber TERMTRAN Terminal Translator Pressure: Traffic Control Post: Test and Checkout TET Turbine Entry Temperature: Telescope and Electron Procedure Telescope: Total Elapsd Time TCR Temperature Control Reference TETR Test and Training TCS Technical Countdown Sequences: Terminal Count TEVROC Tailored Exhaust Velocity Rocket Sequnce: Thenriua .uwlrol System TEW Tactical Electronic Warfare TCSC Trainer Control and Simulation Computer TEWA Threat Evaluation and Weapons Assignment TCTO Time Compliance Technical Order TF Terrain Following: Test Flipht: Trainer Fighter: TCU Temperatuie Control Unit Tactical Fighter: Terminal Frame: Torpedo Fighter: TCXO Temperature-Controlled Crystal Oscillator Task Force: Tank Farm: Test Fixture TO Technical Directive: Touchdown: Time Delay: TFA Transfer Function Analyzer Transmitter Distri..tor TFC Terminal Flight Control: Total Fuel Consumption TDA Tracking & Data Acquisition: Tunnel Diode Amplifier dtc Traffic TDC Top Dead Center: Time Delay Closing TFE Time From Event TDD Target Detection Device TFF Time of Free Fall TOOL Time Division Data Link TFM Turbine Flowmets TDDO Time Delay Drop Out TFR Terrain-Following Radar TODS Television Data Display System TFT Threshold Failure Temperatures D & E Transposition. Docking and Ejection TFX Tactical Fighter - Experimental TOF Two-Degree-of- Freedom TG Telegraph: Telegram: Task Group: Traffic Guidance: TDH Tracking Data Handling Tuned Grid TDI Target Data Inventory T&G Tongue & Groove TOM Time Division Multiplex TGG Tempora-y Geographic Grid TOMA Time Division Multiple Access TOO Time Delay Opening TGL Touch-and-Go Landi TOP Trackn Date Processor Temperature and Dewpoint tgl Toggle TDR Time Domain Reflectometer: Time Delay Relay. TGMA Tone Generator and Master Alarm Torque Differential Receiver: Torque Differential TGS Telemetry Ground Station TGSE Telemetry Ground Support Equipmenit: Test Ground T&DR Tracking and Data Relay Support Equipment TORS Tracking Data Relay Satellite TGT Turbine Gas Temperature: Target TDRSS Tracking and Data Relay Satellite System TH True Heading TDS Test Date Sheet: Technical Data System: Tracking THC Thrust Hand Controller: Translational Hand Controller and Data System: Thermal Degradation Sample. Tactical Data System: Test Data System therm themometer 871
: THIR ABBREVIATIONS AND ACRONYMS THIR Tempersture-Humidity Infrared Radiometer TO Table of Organiastion: Technical Order; Theater of THP Thrust Horsepower Operations (in combinations only): Take-Off TIO Take-Off the Thrust TI Technical T-O Time of Launch Intelligence; Thermal Imaging T&O Test and Operation TIARA Taget Illumination & Recovery A-d TOC Turn of Commend: Technical Order Change TIC Temperature Indicator Controller TOO Time of Delivery TICE Time Integral Cost Effectiveness TOF Time of Flight TID Tactical Information Display (F-I4A) TOG Target Opportunity Generator TIDAR Time Delay Array Radar TOGW Take-Off Gross Weight TIDDAC Time in Dedband Digital Attitude Control TOJ Track on Jamming TIDES Time Division Electronics Switching System TOK Thrust Okay TIG Time of Ignition TO (Kit) Technical Order (Kit) TIGT Turbine Inlet Gas Temperature tol Tolerance TIG (Welding) Tungsten Inert Gas (Welding) TOLIP Trajectory Optimization and Linearized Pitch TIIF Tactical Imagery Interpretation Facility TOMS Total Ozone Mapping System TILS Tactical Instrument Lending System TOO Time of Origin tim Timing TOOL Test Oriented On-Board Language: Test Operations TIMM Thermionic Integrated Micro-Modules Oriented Language tim Telemetry TOP Torque Oil Pressure TIP Tracking Impact Prediction: Trget Identification TOPO Topographic Point: Target IlNustration Print: Turbine Inlet Presaure TOR Terms of Reference: Time of R3ceipt TIPP Time Phasing Program TOFF Time of Retrofire TIR Total Indicator Reading torp Torpedo TIROS Television & Infrared Obeervation Satellite TOS Tactical Operations System TIRP Total Internal Reflection Prism TOT Time Over Target TIS Target Information Sheet: Technical Interface TOW Table-Launched Optically-Trackea Wire-Guided Specification Missile: Take-Off Weight TISEO Target Identification System Electra-Optical TOWA Te-rain & Obsttcle Warning & Avoidance TIT Turbine Inlet Temperature TP Test Point: Turbopump: Test Plan: Test Procedure; TJ Turbo Jet: Thermal Junction: Temperature at Terminal Point: Target Practice Junction TPC Total Program Costs Tic Trajectory Chart TPI Teeth Per Inch; Target Position Indicator TJD Trajectory Diagram TPM Terminal Phase Midcourse tk Tank TPMA Thermodynamii. Properties of Metals and Alloys TL Tracker Lock TPN TwO-Position Nozzle T/L Transporter/Launcher: Talk/Listen TPO Tank Pressurizing Orifice TLE Tracking Light Electronics TPP Test Point Pace: Total Package Procurement TLI Trmsnr Injection TPS Thermal Protection System: Test Procedure TLS Termina Landing System: Telescope: Throttle Lever spficatio SeTting TPSI Torque Pressure in Pounds Per S'luare Inch STLV Threshold Limit Vai TM Task Meory: Technical Manuel: Tactical Missile: tpx Transponder Transverse Magnetc: Technical Manual: Telemetery TR Training: Torque Receiver: T'rque Repeater: Tactical T/M Telemetry Reconnaissance: Transmitter/Receiver: TMA Terminal Control Area Time-to-Rtrograde: Tape Recorder TMC Thrust Magnitude Control T/R Transmit/Receive T.M.G. or Track Made Good TRA Tape Reorder Amplifier TMC- TRAC Transient Padiation Analysis by Computer TMP Thermal Mass Penalty TRACE Tape-Controlled Recording Automatic Checkout TMR Triple Modulator Redundant Equipment TMROM Transportable Medium Range Ballistic Missile TRACON Terminal Radar Control T/M/S or TMS Type. Model and Series TRADEX Target Resolution & Discrimination Experiment TN Technical Note trai Traj*cxy tng Training TRANET Doppie Tracking Network TNI Traffic Noise Index trans Transportation; Transfer tnk Tank TRAP Tracker Analysis Program: Terminal Radiation TNT Tnnitrotoluene Airborne Program: Tape Recorder Actin Plan 872 ABBREVIATIONS AND ACRONYMS UNPS TRAPS Tactical Rapid Access Processing System TVD Toxic Vapor Disposal TRE Training Equipment TVOR Terminal VHF Omnirange TREAT Transient Radiation Effects Automated Tabulation TVTO True Vertical TakeOff TW Training.Water-Cooled: Trail Warning: Thermal Wire TREE Transient Radiation Effects on Electronics TR RTdnie Feqeny /W Thrust to Weight Ratio; Thrust Weight STRF Tuned Radio Freqenc TWM Traveling Wave Maser TRFCS Temperature Rate Flight Control System TWMR Tungsten Water Moderated Reactor TRIA Telemetry Range Instrumentation Aircraft TWr Tower trk Tracking TWS Track While Scan tmfr Transfer TWT Traveling Wave Tube tmspn Transportation: Transporter TWTA Travelling Wave Tube Amplifier TRR Target Ranging Radar TWX Telegram: Teletypewriter Exchange: Teletype Wire TRS Time Reference System: Test Requirement Transmission Specification TX Time.Expired: Torque Transmitter; Transmit TRSR Taxi & Runway Surveillance Radar typ Typical TRSSM Tactical Range Surface-to-Surface Missile U TRU Transmitter/Receiver Unit TRUMP Target Radiation Measurement Program UAM Underwater to Air Missile TS Test Set: Time Sharing UAUM Underwater-to-Air-to-Underwater Missile TSAM Training Missile UC Unit Cooler TSB Twin Sidebend UCA Upper Control Area TSDAC Tri-Service Air Defence Ground Environment UCL Upper Control Limit TSE Transportation and Support Equipment UCNI Unified Communication. Navigation. Identification TSEG Time Sequenced UCO Universal Code TSG Test & Switching Gear U/D Up/Down TSH Tl-rmndynamic Suppression Head UDB Up-Data Buffer TSP Tech.lical Support Package UDL Update Link TSQ Time Soiper Quick (Fuses) UDMH Unsymmetrical Dimethyl Hydrazine TSR Twin Side-by-Side Rotor UDOP Ultra-High Frequency Doppler TSS Tactical Strike System: Time Sharing System UDT Underwater Demolition Team tstm Thunderstorm UEAC Unit Equiprment Aircraft TT Target Tug (Aviation): Teletype: Tracking Telescope UFO Unidentified Flying Object T/T Timing and Telemetry: Terminal Timing UH Unit Heater: Utility Htlicopter T”&C Telemetry Tracking and Communications UHF Ultra-High Frequency ITCV Tracking Telemetry. Command & Voice UI/l Microinches Per Inch TTE Time to Event ukn Unknown TTF Time to Failure: Test to Failure ul Upper Limit TTL Total Time to Launch U/L Uplink TTQ Temperature Traverse Quality ULF Ultra-Low Frequency TTR Target Tracking Radar; Twin Tandem Rotors ull Ullage TTS Test and Training Satellite ULMS Undersea Long-Range Missile System TTr Time Tempersiture Transformation ULO Unmanned Launch Operations TfU Terminal Timing Unit ULPR Ultra-Low Pressure Rocket TTY Teletype ULSV Unmanned Launch Space Vehicles TU Task Unit: Training Unit ult Ultimate tub Tubing UM Umbilical Mast TUG Towed Universal Glider UMA Universal Measuring Amplifier: Unmanned Aircraft tur Turret umb Umbilical ttuurrbb TTuurrbbiinnee UMI Unmanned Interceptor turbo gen Turbine Generator UNCOL Universal Computer Oriented Language turbopump Turbine Pump UDUe edDt TV Television: Test Vehicle: Terminal Velocity UND User Need Date T/V Thermal/Vacuum undk Undock TVA Thrust Vector Alignment undw Underwater TVC Thrust Vector Control unf Unfused TVCS Thrust Vector Control System UNPS Universal Power Supply 873 unsat ABBREVIATIONS AND ACRONYMS unsat Unsatisfactory VAST Versatile Automatic Specification Tester: Versatile UOC Ultimate Operating Capability Avionics System Tester UPLF Universal Payload FairingVBVleBo:VriaBm- VATLS Visual Airborne Target Location System Va Valve, Box: Vertical-Bomb. UPS Uninterrupted Power Supply V/B Vapour Blasting UPT Undergraduate Pilot Tiaining VBD Voice Band Data UPWT Unitary Plan Wind Tunnel VC Voice Coil: Velocity Counter UR Ullage Rocket V/C Vector Control U/R Upset Ratio; Unsatisfactory Report; Up Range VCD Vertical Climb and Descent URBM Ultimate Range Ballistic Missile VCI Volatile Corrosion Inhibitor URN Ultra-High Radio Navigation VCL Vertical Center. Line USB Upper Surface Blown; Upper Sideband: Unified S VCO Voltage Controlled Oscillator Band VCS Ventilation Control System; Velocity Cutoff System USBE Unified S-Band Equipment VDA Variable Depth.ASDIC USE Unit Support Equipment VDC Volts. Direct Current USM Underwater to Surface Missile VDF Video Frequency USS United States Standard VDI Vertical Display Indicator USSA United States Standard Atmosphere VDP Vehicle Deadlined for Parts USSG United States Standard Gauge VVDSRVAra l Voice b.i' eDta ta Roaecording Auxiliary VDS Variable Depth Sonar ut Universal Time VDT Vanable Density Tunnel U/T Umbilical Tower VDU Visual Display Unit UTC Universal Test Console VE Value Engineering: Vernier Engine UTE Universal Test Equipment VEB Variable Elevation Beam UTM Universal Transverse Mercator vec Vector UTrAS Utility Tactical Transport: Aircraft System veh Vehicle UUM Underwater to Underwater Missile vel Velocity UUT Unit Under Test Vend Vendor UV Under Voltage: Ultraviolet verif Verification UVF Unmanned Vertical Flight VENITRAC Vernier Tracking by Automatic Correlation UV/OV Under Voltage/Over Voltage vert Vertical UVS Ultraviolet Spectrometer VEWS Very Early Warning Systeri UVASERS Ultraviolet Amplification by Simulated Emission of VF Interceptor D.y Firhter; Voice Frequency Radiation VF(AW) All Weather Fighter UVD Under Voltage Device VFO Vanable Frequency Oscillator UVS Ultraviolet Spectrcmetr VFR Vehicle Flight Readings, Visual Flight Rules UW Unconventional Warfare uwtr Underwater VFT Vertical Flight Test UXB Unexploded Bomb VG Velocity Gravity; Variable Geometry: Vertical Gyro VGA Very General Algorithm V VGP Vehicle Ground, Poirt V Velocity; Volt VGPI Visual Glide Path Indicator; Visual Ground Position Indicator VA Visual Aid: Vulnerable Area: Volt Ampere VH Very High VABD Van Allen Belt Dosimeter VAC Vacuum; Volts. Alternating Current VH Velocity-to-Height VAH Heavy Attack Aircraft VHAA Very High Altitude Abort VAL Validation VHB Very Heavy Bombardment VAP Reconnaissance/Attack Aircraft VHF Very High Frequency vap Vaporizer VHF/DF Very High Frequency Direction-Finding VAPI Vertical Speed and Approach Path Indicator VHRR Very High Resolution Radiometer VAR Vertical Air Rocket: Visual-Aural VHF Range; vib Vibration Volt-Ampere Reactive: Variation Vic Vicinity var Variable VARH Volt-Ampere Reactive Hour VIFCS VTOL Integrated Flight Control System VARS Vertical and Azimuth Reference System VINS Velocity Inertia Navigation System VASI VASIS Visual Approach Slope Indicator; Visual Approach VIP Visual Identification Point Slope Indicator System VIPS Voice Interruption Priority System 874 ABBREVIATIONS AND ACRONYMS WOD VIRNS Velocity Inertia Radar Navigation System VTO Vertical Take-Off vis Visibility VTOGW Vertical Take-Off Gross Weight VIS ID Visual Identification VTOHL Vertical Take-Off and Horizontal Landing visc Viscous VTOL Vertical Take-Off and Landing VISSR Visible Infrared Spin-Scan Radiometer VTPR Vertical Temperature Profile Radiometer VJ Vacuum Jacketed VTS Vertical Test Stand V/TS Viewfinder/Tracking System VL VerticaLl adder VTVM Vacuum Tube Voltmeter VLA Very Low Altitude VU Vehicle Unit VLI Very long Baseline Interferometry vul Vulcanize VLD Visual Leydown Delivery VUS Versatile Upper Stage VLIr Very Low Frequency: Vertical Launch Facility W Vent Va:ve VLH Very Long Range WCS Vemibi Velocity Correction System vlv Valve VM Velocity Modulation W VMC Visual Meteorological Conditions Watt VMS Viewfinder-Metering System WADC Wright Air Development Center VN Vulnerability Number WARLA Wide Aperture Radio Location Array vo Voice WASP Weather Atmuspheric Sounding Projectile VOC Voice Operator Coder WATS Wide Area Telephone Service VOCOM Voice Communications WB Wheel Baae: Wideband: Widebeam: Weather Bureau VODAT Vice.Operated Device for Automatic Transmission WS Wie Band ata VOF Variable Operating Frequency WBDL Wide Band Data link VOIS Visual Observation Instrumentation Subsystem WBGT Wet Bulb Globe Temperature (a heat stress index) vol Volume WBTS Widebnd Transmission S (stem VOLTAN Voltage Amperage Normalizer WBT R Wideband VideomTspio Recorer VOO mV-Mlt ilimeerWBVTR Widebend Video Tape Recorder VOM Vnt.-Ohm-Milhameter WCDB Wing Control During Boost VOR Very High Frequency Omnidirectional Range WD WidtoDing Rt (oiginally. visual omnidirectional range): Voice W/D Width-to-Diameter Ratio Omnidirectional Range wdb Wideband VOilTAC Visual Omnirange & TACAN WDC Weapon Delivery Computer VOX Voice Operated Transmission WDE Weapons Direction Equipment VP Vent Pipe: Vertical Polarization; Variable Pitch WDI Wind Direction Indicator VPI Valve Position Indicator; Vapour Phase Inhibito; wdo Window VPM Volts Per Mu WECPNL Weighted Equivalent Continuous Perceived Noise VPR Virtual PPI Reflectoscop Level VR Voltage Relay WEFAX Weather Facsimile VRB VHF Recovery -:iacon: Voice Rotating Beacon WER Weight Estimating Relationship VRMS Volt Root Mean Square W/E&SP With Equipment and Spare Parts VS Vehicle Station. Versus WET Weight Effectiveness Testing VSB Vestigial Sideoti-d WEX A code or symbol for 'aircraft delay due to weather' VSC Vibration Safety Cutoff WFNA White Fuming Nitric Acid VSCF Variable Speed 3onstant Frequency wg Waveguide: Wing VSD Vertical Situatioi Display whl Wheel VSI Vertical Speed Indicator: Video Simulation Interface WHM Watt Hour Meter VSM Vestigial Sideband Modulation: Video Switching WHR Watt Hour Matrix VSR Visual Security Range: Very Short Range WILCO Will Comply VSTOL Vertical and/or Short Take-Off and Landing WIND Weather Information Network and Display V/STOL Vertical/Short Take-Off and Landing WINGS Weather Information Network & Display System VSWR Voltage Standing Wave Ratio WIP Wartime Intelligence Plan VT Vertical Tail syk Week VTD Vertical Tape Display wl Waterline: White Light VTF Vertical Test Fixture WM Wattmeter VT Fuze Variable-Time Fuze WMS Waste Management System; Wind Measuring VTG Vertical Take-Off Autogyro System VTM Voltage Tunable Magnethon: Vertical Thrust Margin WOD Wind Down: Over the Deck 875 WARBAT ABBREVIATIONS AND ACRONYMS WARBAT Wartime Order of Battle XM Research Missile WP Working Paper; Working Pressure xmit Transmit WPC Watts Per Candle xmsn Transmission WPM Words Per Minute xmtr Transmitter wpn Weapon xpndr Transponder WPU With Power Unit X-REA X-Ray Events Analyzer X-RT X-Ray Telescope WR Weapon Range xtal Crystal WRT With Respect To xum Extreme Ultraviolet WS Work Statement: Windsonde W/S Weapons System Y WSE Weapon Support Equipment y Symbol for Prototype: Yaw WSP Working Steam Pressure yd Yard WST Weapon System Test YM Prototype Missile: Yawing Movement WT Watertight: Weight: Water Tank yp Yield Point WIT Wireless Telegraphy yr Year WTM Wind Tunnel Model YS Yield Strength WW Wire-Wound YTV Yaw Thrust Vector WWD Windward WX Weather WXD Meteorological Radar Station Z WXR Radiosonde Station ZD 7ero Defects zed-zed A US Navy instrument approach system that uses X VHF direction finding stations ZEL Zero Launching X Experimental: Trans ZELL Zero Length Launching XB Experimental Bomber ZETA Zero Energy Thermonuclear Assembly XC Experimental Cargo ZF Zone of Fire xcpt Except ZS Zero Gradient Synchrot-on xcvr Transceiver ZI Zone of Interior XDCR Transducer ZM Z Marker xeq Execute ZP Lighter-than-Air Aircraft (Airships) XF Experimental Fighter ZR. also Zeppelin Rigid written Z.R. XFER Transfer Z Time Zebra Time xfmr Transformer ZU A Navy designation for lighter-than-air utility aircraft xfr Transfer ZULU Greenwich Mean Time (GMT)(formerly termed Zebra XH Experimental Helicopter Time)