NASA Acronyms -A-


A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A ampere
A analog
A analog signal
A&A advertise and award
A&CO activation and checkout
A&COTA assembly and checkout technical analysis
A&E architects and engineers
A&E architectural and engineering
A&L approach and landing
A&P airframe and power plant
A&P attitude and pointing
A&PS Administration and Program Support (MSFC directorate)
A&R assembly and recycle
A&R automation and robotics
A&RC application and resource control
A&S alignment and stabilization
A&SS alignment and stabilization subsystem
A&T assembly and test
A&TA assembly and test area
A-G air-to-ground
A/A air-to-air
A/A airplane avionics
A/A analog-to-analog
A/A angular accelerometer
A/B airborne
A/C air conditioning
A/C aircraft
A/C associate contractor
A/D analog-to-digital
A/F air-to-fuel ratio
A/F airframe
A/FM arm firing mechanism
A/G air-to-ground
A/J antijam
A/L airlock
A/L approach and landing
A/L autoland
A/M area to mass
A/M auto/manual
A/N account name
A/N alphanumeric
A/O analog output
A/P airport
A/P autopilot
A/R as required
A/R autoland roll-out
A/S acquisition sensor
A/S airspeed
A/S arm/safe
A/S ascent stage
A/S auxiliary stage
AA American Airlines
AA Associate of Arts degree
AA accelerated assembly
AA accelerometer assembly
AA affirmative action
AA air-to-air
AA airplane avionics
AA angular accelerometer
AA antiaircraft
AA associate administrator
AA/AL airplane avionics/autoland
AA/AL automatic approach/autoland
AAA allocations, assessments, and analysis
AAA astronaut-actuated abort
AABNCP Advanced Airborne National Command Post
AACCS analytical approach to candidate constellation selection
AACPSM actual average cost per successful mission
AACS attitude and antenna control system
AADEW attack assessment for directed-energy weapon
AADR applications approval design review
AADS ascent air data system
AADSF advanced automated directional solidification furnace
AAE American Association of Engineers
AAE abort advisory equipment
AAE aerospace auxiliary equipment
AAFE advanced applications flight equipment
AAIR advanced atmospheric sounder and imaging radiometer
AAMP advanced architecture microprocessor
AAMRAM air-to-air medium-range missile
AAO Astronaut Activities Office (JSC)
AAP Affirmative Action Plan
AAP Affirmative Action Program
AAP airlock adapter plate
AAP analog autopilot
AAP assemble at pad
AAS abort advisory system
AAS advanced antenna system
AASM Association of American Steel Manufacturers
AB adapter booster
AB afterburner
AB air bearing
AB airborne
AB anchor bolt
AB autobeacon
AB avionics bay
ABA dc amplifier, buffer, and attenuator
ABC Ada browse capability
ABC automatic brightness control
ABCAS algorithm beam center and shape
ABCF as-built configuration file
ABCL as-built configuration list
ABCP airborne command post
ABCR as-built configuration record
ABD Airborne Ballistics Division (NASA)
ABE air-based electronics
ABE air-breathing engine
ABE arm-based electronics
ABERT auto bit error rate test
ABES air-breathing engine system
ABETS airborne beacon test set
ABI avionics bus interface
ABJIT algorithm beam jitter
ABL airborne laser
ABL aircraft-based laser
ABLE airborne laser evaluation
ABLOS algorithm beam line of sight
ABM acquisition bus monitor
ABM advance bill of materials
ABM antiballistic missile
ABM apogee boost motor
ABMA Army Ballistic Missile Agency
ABMCP airborne military command post
ABMO Antiballistic Missile Office
ABNCP Airborne National Command Post
ABPS air-breathing propulsion system
ABRES antiballistic reentry system
ABS air-break switch
ABS ammonia boiler system (subsystem)
ABT air-bearing table
ABTCU active baseplate thermal control unit
AC advanced composite
AC aerodynamic center
AC application controller
AC assembly complete
AC audio center
AC auxiliary computer
ACA Associate Contractor Administration
ACA altitude controller assembly
ACA annunciator control assembly
ACA attitude controller assembly
ACA auxiliary crew compartment
ACAP Advanced Computer Airframe Program
ACB air-cushion barge
ACC advanced carbon-carbon
ACC aft cargo compartment
ACC automatic control console
ACC auxiliary crew compartment
ACCE augmented continuous control evaluator
ACCESS assembly concept for construction of erectable space
ACCN audit central control network
ACCS adaptive communication control subsystem
ACCU audio central control unit
ACD accuracy control document
ACD anti-carryover device
ACD architectural control document
ACDA Arms Control and Disarmament Agency
ACDNS attitude control, determination, and navigation
ACDS attitude control and determination system (subsystem)
ACE acceptance checkout equipment
ACE actual average cost per successful mission
ACE attitude control electronics
ACE automatic checkout equipment
ACEL Air Crew Equipment Laboratory (U.S. Navy)
ACES acceptance checkout and evaluation system
ACES acceptance control equipment section
ACES automatic checkout equipment sequencer
ACEU aerocontrol electronics unit
ACF American Car and Foundry
ACI age-controlled item
ACI allocated configuration identification
ACIL automatic controlled instrument landing
ACIP aerodynamic coefficient identification package
ACIP aerodynamic coefficient instrumentation package
ACL access control list
ACL allowable container load
ACL ascent closed loop
ACLC adaptive communication live controller
ACLS automated control and landing system
ACM Association of Computing Machinery
ACM acquisition control module
ACM actual average cost per successful mission
ACM auxiliary core memory
ACMA Army class managing activity
ACMB Applications Configuration Management Board
ACME attitude control and maneuvering electronics
ACMS automated configuration management system
ACN Ascension Island (STDN)
ACN acceptance change notice
ACO acceptance checkout
ACO administrative contracting officer
ACO assembly checkout
ACP airborne command post
ACP astronaut control panel
ACP audio control panel
ACPL assembly component parts list
ACPM associate contractor program manager
ACPM attitude control propulsion motor
ACPO Associate Contractor Project Office
ACPS attitude control propulsion system
ACR actual cost report
ACRC assured crew return capability
ACRES automated change request and evaluation system
ACRIM active cavity radiometer irradiance monitor
ACRS Advisory Committee on Reactor Safeguards
ACRS accelerated cost recovery system
ACRV assured crew return vehicle
ACS American Chemical Society
ACS advanced combat system
ACS aft crew station
ACS alternating current synchronous
ACS altitude control and stabilization
ACS atmosphere control system
ACS attitude control and stabilization
ACS attitude control system
ACS automated control system
ACSN advance change schedule notice
ACSN advance change/study notice
ACSU alternating-current switching unit
ACT acquisition coarse tracker
ACT acquisition, control, and test
ACT audio center transmission
ACTA activate test article
ACTS acquisition coarse tracker subsystem
ACTS advanced communication technology satellite
ACU annunciator control unit
ACU avionics cooling unit
ACUO avionics cooling unit operator
ACV air-cushion vehicle
ACWP actual cost for work performed
AD Administrative Operations and Support Service (KSC
AD advanced development
AD air density
AD associate director
ADA adaptive diagnostic authoring
ADA azimuth drive assembly
ADABECS airborne demonstration advanced beam extraction am
ADAC attitude determination and control
ADACS attitude determination and control system
ADADL Ada design and documentation language
ADAES advanced data assessment expert system
ADAM automated distributed architecture model
ADAMS automated dynamic analysis of mechanical systems
ADAP aerodynamic data analysis program
ADAP automated data analysis program
ADB Aerodynamic Data Book
ADB auxiliary memory data output bus
ADC Aerospace Defense Command
ADC Air Defense Command
ADC air data computer
ADC analog-to-digital computer
ADC analog-to-digital converter
ADC attitude determination and control
ADCN attitude determination, control, and navigation
ADCOM air defense command
ADCR applicable document contractual record
ADCS attitude determinate control system
ADCS attitude determination and control subsystem
ADD architecture definition document
ADF automatic direction finder
ADF automatic display finder
ADFRF Ames/Dryden Flight Research Facility
ADH advanced development hardware
ADI analytic and design investigation
ADI attitude direction indicator
ADI attitude director indicator
ADI attitude display indicator
ADIC Air Defense Intelligence Center
ADL Ada design language
ADL Ada-based design language
ADL Advanced Development Laboratory
ADL Avionics Development Laboratory
ADM air data management
ADMS automated data management system
ADOP advanced distributed on-board processor
ADP Advanced Development Program (NASA)
ADP acceptance data package
ADP acceptance documentation package
ADP air data package
ADP air data probe
ADP automated data processing
ADP automatic data processing
ADPA air data probe assembly
ADPE automated data processing equipment
ADPE automatic data processing equipment
ADPF automated data processing facility
ADPL as-designed parts list
ADPS acceptance data package system
ADPSSM ADP system security monitor
ADR Aerospace and Defense Research
ADRL automatic drawing release list
ADS air data sensor
ADS air data system (subsystem)
ADS angular displacement sensor
ADS ascent design system
ADS attitude determination subsystem
ADS attitude display system
ADS audio distribution system
ADSA alternate demonstration structural article
ADSF automatic directional solidification furnace
ADT air data transfer
ADTA air data transducer assembly
ADU annunciator display unit
ADU ascent driver unit
AE architectural and engineering
AEB aft equipment bay
AEC American Engineering Council
AEC Atomic Energy Commission
AEC aft end cone
AEC aft events controller
AECS area entry control system
AECS automated entry control system
AED Aerospace Electrical Division (Westinghouse)
AED analog event distributor
AEDC Arnold Engineering Development Center
AEDS analog event distribution system
AEM acoustical emission monitoring
AEM arsenal exchange model
AEM assembly and external maintenance
AEOP adaptive electro-optical processor
AER Atomic Energy Research
AERO Aeroballistics (MSFC)
AES American Electrochemical Society
AES American Electroplaters Society
AES Auger electron spectroscopy
AES advanced electrical schematic
AES analog event system
AES atmosphere exchange system
AESOP an easy system of programming
AET aerosurface end-to-end test
AET algorithm evaluation and test
AETB alumina-enhanced thermal barrier
AETL approved engineering test laboratory
AF Air Force
AF aft fuselage
AF airframe
AF audio frequency
AF award fee
AF/DBS areal fluid data base system
AF/IN Air Force/Intelligence
AFA American Foundrymen's Association
AFA airframe assembly
AFAD armed forces acquisition document
AFAL Air Force Astronautics Laboratory
AFAL Air Force Avionics Laboratory
AFALD Air Force Acquisition Logistics Division (WPAFB)
AFAPL Air Force Aero Propulsion Laboratory
AFATL Air Force Armaments Test Laboratory
AFB Air Force base
AFBMA Antifriction Bearing Manufacturing Association
AFBMD Air Force Ballistic Missile Division
AFC aerodynamic flight control
AFC automatic flight control
AFC automatic frequency control
AFCS automatic flight control system
AFCSC Air Force Cryptologic Support Center
AFD acceptance for data
AFD aft flight deck
AFD assistant flight director
AFDE aft flight deck equipment
AFDO aft flight deck operator
AFDR ascent flight design review
AFE Aeroassist Flight Experiment
AFEB Award Fee Evaluation Board
AFEC Award Fee Evaluation Committee
AFESD Air Force Electronic Systems Division
AFETR Air Force Eastern Test Range
AFETRM Air Force Eastern Test Range Manual
AFEV Air Force experiment vehicle
AFF acceptance and ferry flight
AFFDL Air Force Flight Dynamics Laboratory
AFFTC Air Force Flight Test Center (EAFB)
AFFTC/RPL Air Force Flight Test Center/Rocket Propulsion
AFGE American Federation of Government Employees
AFGL Air Force Geophysics Laboratory
AFGWC Air Force Global Weather Center
AFI automatic fault isolation
AFLC Air Force Logistics Command
AFM Air Force manual
AFM arm/firing mechanism
AFMDC Air Force Missile Development Center
AFML Air Force Materials Laboratory
AFMTC Air Force Missile Test Center
AFO abort from orbit
AFO announced flight opportunity
AFOSH Air Force Occupational Safety and Health
AFOTEC Air Force Operational Test and Evaluation Center
AFP Air Force plant
AFP Ariane-furnished property
AFP advanced flexible processor
AFP888 designation for P80-1 spacecraft
AFPC Air Force Program Control
AFPD authorization for program development
AFPM Air Force program manager
AFPR Air Force plant representative
AFR Air Force regulation
AFRPL Air Force Rocket Propulsion Laboratory (EAFB)
AFRSI advanced flexible reusable surface insulation
AFS Air Force standard
AFS Air Force station
AFS ascent flight system
AFSA Air Force study and analysis
AFSAT Air Force satellite
AFSATCOM Air Force satellite communication(s)
AFSC Air Force Space Command
AFSC Air Force Systems Command
AFSC Air Force specialty code
AFSCF Air Force Satellite Control Facility
AFSCF Air Force Space Command Facility
AFSCF Air Force Systems Command Facility
AFSCN Air Force Space Command network
AFSCN Air Force satellite control network
AFSCS Air Force satellite communications system
AFSD Air Force Space Division
AFSIE Air Force standard items and equipment
AFSIG Ascent Flight System Integration Group
AFSLV Air Force space launch vehicle
AFSPACECOM Air Force Space Command
AFSRT avionics flight systems readiness test
AFSSD Air Force Space Systems Division
AFSTC Air Force Satellite Test Center
AFSTC Air Force Space Technology Center
AFSTC Air Force Space Technology Command
AFSWC Air Force Special Weapons Center (Holloman AFB)
AFT active fine tracker
AFT aerodynamic flight test
AFT atmospheric flight test
AFTA acoustic fatigue test article
AFTA aft frame tilt actuator
AFTEC Air Force Test and Evaluation Center
AFTOC Air Force Tactical Operations Center
AFTP Air Force test procedure
AFTS aft fuselage thrust structure
AFWAL Air Force Weapons Analysis Laboratory
AFWAL Air Force Wright Aeronautical Laboratory
AFWAL/ML Air Force Wright Aeronautical Lals Laboratory
AFWL Air Force Weapons Laboratory
AFWPAL Air Force Wright-Patterson Aeropropulsion Laboratory
AFWSG Air Force Weapons System Group
AFWTR Air Force Western Test Range
AG artificial gravity
AG attitude gyro
AGAA attitude gyro accelerometer assembly
AGAP attitude gyro accelerometer package
AGARD Advisory Group for Aeronautical Research and Development
AGC Aerojet General Corporation
AGC automatic gain control
AGCA automatic ground-controlled approach
AGCS automatic ground control station
AGCU air/ground cooling unit
AGCU attitude gyro coupling unit
AGE aerospace ground equipment
AGE air/ground equipment
AGE automatic ground equipment
AGI agreement item
AGL above ground level
AGL above-ground link
AGL absolute ground level
AGMA American Gear Manufacturer's Association
AGMC Aerospace Guidance and Metrology Center
AGN&C advanced guidance, navigation, and control
AGO Santiago, Chile (STDN)
AGOES advanced geosynchronous observation environment
AGOSS automated ground operations scheduling system (KSC)
AGREE Advisory Group in Reliability of Electronic Equipment
AGS ASPS gimbal system
AGS abort guidance system
AGS antigravity suit
AGT adaptive guidance throttling
AH ampere hour
AH attitude hold
AHCS advanced helicopter control system
AHI artificial horizon indicator
AHM automatic hold mode
AHP analytical hierarchy process
AHP pitch axis attitude hold
AHR ablative heat rate
AHR roll axis attitude hold
AHRS attitude heading reference system
AHS aft heat shield
AI action item
AI airspeed indicator
AI altimeter indicator
AI altitude indicator
AI anti-icing
AI artificial intelligence
AI associate investigator
AI/ES artificial intelligence/expert system
AIA Aircraft Industries Association
AIAA American Institute of Aeronautics and Astronautics
AICBM anti-ICBM
AICC action item control card
AICE American Institute of Chemical Engineers
AICP aerodynamic instrumental coefficient package
AICS action item closeout sheet
AID abbreviated item description
AID action item disposition
AID analog input differential
AID audit item disposition
AIDE aerospace installation diagnostic equipment
AIDS airborne integrated data system (subsystem)
AIEE American Institute of Electrical Engineers
AIIM Association for Information and Image Management
AIL Avionics Integration Laboratories
AILAS automatic instrument landing approach system
AILS automatic instrument landing system
AIM automatic information management
AIME American Institute of Mechanical Engineers
AIOD ascent insertion on-orbit deorbit
AIP aircraft instrumented payload
AIP avionics integration plan
AIR action item report
AIR adaptive intercommunication requirement
AIS action item sheet
AIS airborne imaging spectrometer
AIS airlock illumination subassembly
AIS analog-in single-ended
AISC American Institute of Steel Construction
AISD Autonetics ICBM Systems Division (Rockwell)
AISI American Iron and Steel Institute
AIST Agency of Industrial Science and Technology
AIST abbreviated integration system test
AIST advanced interferometric system technology
AISTR advanced interferometric system technology requirement
AIT autoignition test
AIU abort interface unit
AIU avionics interface unit
AJ antijamming
AJ assembly jig
AJCS automated job card system
AKA active keel actuator
AKM apogee kick motor
AL airlock
AL approach and landing
AL autoland
ALAS approach/landing autopilot subsystem
ALASAT air-launched antisatellite
ALASS alternate low-altitude surveillance system
ALB acceptance log book
ALC aft load controller
ALC air logistics center
ALC audio load compensator
ALC automatic level control
ALC automatic light control
ALCA aft load controller assembly
ALCA automatic level-control assembly
ALCC Airborne Launch Control Center
ALCM air-launched cruise missile
ALCOA Aluminum Corporation of America
ALCOM algorithm line-of-sight comparison
ALDC automatic load and drive control
ALDO activity-level-dependent operation
ALE Airborne Laser Experiment
ALE airport lighting equipment
ALERT acute launch emergency reliability tip
ALERT acute launch emergency restraint tip
ALFA air-lubricated free attitude
ALFT approach and landing flight test
ALGOL algorithmic language
ALIO activity-level-independent operation
ALL Airborne Laser Laboratory
ALMS automated logistics management system
ALOSA algorithm line-of-sight angle
ALPS advanced liquid propulsion system
ALPS approach and landing procedures simulator
ALRC Aerojet Liquid Rocket Company
ALRUTS automated line replaceable unit tracking system (KSC)
ALS Ada language system
ALS advanced launch system
ALS advanced logistics system
ALS airlock system
ALS alternative landing site
ALS approach/landing system
ALS automatic landing system
ALSA astronaut life support assembly
ALSE astronaut life support equipment
ALSEMP ALS Engineering Management Plan
ALSGEM ALS global evaluation module
ALSS advanced life support system
ALSS airlock support system (subsystem)
ALSSSWG ALS System Security Working Group
ALSSW ALS software
ALSYM ALS model
ALT approach and landing test
ALTR approach and landing test requirement
ALTS avionics LRU tracking system
ALU arithmetic/logic unit
ALV advanced launch vehicle
ALV advanced logistics vehicle
ALVIB algorithm payload vibration
AM Administration and Management Operations (KSC
AM actuator mechanism
AM aeromedical monitor
AM airlock module
AM alpha meter
AM amplitude modulated
AM amplitude modulation
AM antenna management
AM assurance management
AMAL Aeronautical Medical Acceleration Laboratory
AMAL Aviation Medical Acceleration Laboratory
AMBD automated maintenance data base
AMC Air Material Command
AMC Army Missile Command
AMC aft motor controller
AMC automatic manual control
AMC automatic mixture control
AMCA aft motor controller assembly
AMCC ADL master control console
AMCM advanced missions cost model
AMCR automated master change record
AMDCS assurance management document control system
AMDS advanced missions docking system (subsystem)
AME abort maneuver evaluator
AMEC aft master events controller
AMEU alpha/Mach indicator electronic unit
AMF abort motor facility
AMF apogee memory image
AMFL Aeromedical Field Laboratory
AMG Activation Management Group
AMG angle of the middle gimbal
AMI airspeed/Mach indicator
AMI alpha/Mach indicator
AMI apogee memory image
AMIC Automated Management Information Center
AMIS acquisition management information system
AMK aircraft modification kit
AML approved materials list
AMLC asynchronous multiline controller
AMLS advanced manned launch system
AMMM autonomous magnetic momentum management
AMO Aerospace Medical Operations (JSC)
AMOOS advanced maneuvering orbit-to-orbit Shuttle
AMOS Air Force Maui optical site
AMPD Applied Materials Physics Division
AMPR aeronautical manufacturer's planning report
AMPR aeronautical manufacturer's progress report
AMPS atmosphere, magnetosphere, and plasmas in space
AMPS atmospheric magnetospheric plasma system
AMPTE active magnetospheric particle tracer explorer
AMR Atlantic Missile Range
AMR area-to-mass ratio
AMRF Automated Manufacturing Research Facility
AMRO AMR operations
AMRV astronaut maneuvering vehicle
AMS acoustic measurement system
AMS actuation mechanism subsystem
AMS aeronautical material specification
AMS amplifier subsystem
AMS attached manipulator system
AMS automated material system
AMS automated measurement system
AMSC advanced military space flight capability
AMSD Autonetics Marine Systems Division
AMST advanced medium STOL transport
AMT auxiliary master tape
AMTAS automatic modal tuning and analysis system
AMTD automatic magnetic tape dissemination
AMTF Acoustic Model test Facility
AMU astronaut maneuvering unit
AMU attitude match update
AMW angular momentum wheel
AMX AM transmitter-receiver
AMY Ada management yield
AN Army-Navy
AN alphanumeric
ANA Air Force-Navy aeronautical bulletin
ANARS autonomous navigation and attitude reference system
ANC Air Force-Navy-civil
ANC active nutation control
AND Air Force-Navy aeronautical design standard
AND Air Force-Navy design
ANI authorized, not implemented
ANL automatic noise limiter
ANMCC Alternate National Military Command Center
ANRA air navigation radio aid
ANSI American National Standards Institute
ANT Antigua (ETR)
ANT Antigua Island
ANVIL CAD tool
AO acoustic-optical
AO analog output
AO announcement of opportunity
AOA American Ordnance Association
AOA abort once around
AOA airborne optical adjunct
AOA angle of attack
AOC annual operating cost
AOC auxiliary output chip
AOCP AVCS on-board computer program
AOCP ac on-board computer program
AOCRD acceptance and operational checkout requirements
AOCS attitude and orbit control subsystem
AOD Aircraft Operations Division (JSC)
AOD advanced object data
AOD analog output differential
AOD assistant operations director
AOES advanced orbit ephemeris system
AOFEE advanced orbiter flight evaluation experiment
AOI area of interest
AOIS automatic optical inspection system
AOL area of launch
AOM acoustic-optic modulator
AOP annual operating plan
AOP assembly operations plan
AOPL advance order parts list
AOPM airline operations planning model
AOQ average outgoing quality
AOQL average outgoing quality limit
AOS ACTS optical system
AOS acquisition of signal
AOS airborne optical system
AOSP advanced on-board signal processor
AOT actual operating time
AOT alignment optical telescope
AOT avionics operating time
AOT avionics overall test
AP Procurement, Supply, and Transportation (KSC
AP accelerometer package
AP access panel
AP access point
AP administrative procedure
AP air pressure
AP atmospheric and space physics
AP autopilot
AP&P advanced plans and programs
APA abort programmer assembly
APA allowance for program adjustment
APAE attached payload accommodations equipment
APAS Aerodynamic Performance and Sizing Program
APC adaptive payload carrier
APC advanced propulsion comparison
APC aft power controller
APC airborne particle counter
APC armored personnel carrier
APC automatic phase control
APCA aft power controller assembly
APCP Aerojet photoelectric cell program
APD area passive dosimeter
APD avalanche photo diode
APDL Ada programming design language
APE arithmetic processing extension
APES advanced processor emulator system
APGC Air Proving Ground Command
API air position indicator
APIF automated process information file
APIRD authorized procurement information requirements
APIRL authorized procurement information requirements list
APK accelerometer package
APL applications program library
APLAC analysis program linear active circuit
APLIS automated payload ICD system
APLM applications program library maintenance
APM ascent particle monitor
APM assistant project manager
APM associate program manager
APMSM assembly phase maintenance simulation model
APN ACE problem notice
APO automated purchase order
APP advance procurement package
APP astrophysics payload
APPF Automated Payload Processing Facility
APPLE advanced propulsion payload effect
APPS auxiliary payload power system
APR advance parts release
APRF Army Pulse Radiation Facility
APS aft propulsion system (subsystem)
APS ascent propulsion system
APS attitude propulsion system (subsystem)
APS automated planning system
APS automatic processing system
APS auxiliary power subsystem
APS auxiliary propulsion system
APSAP auxiliary propulsion system aft pod
APSE Ada programming support environment
APSS atmospheric pressure supply subsystem
APT airborne pointer tracker
APT astronaut preference test
APT automatic programmed tool
APTE automated production test equipment
APTI actions per time interval
APU auxiliary power unit
APU auxiliary propulsion unit
APUS auxiliary power unit subsystem
APUT auxiliary power unit test
APWL automatically processed wire list
AQL acceptance quality level
AR acceptance readiness
AR acceptance review
AR acid resisting
AR antireflection
AR antireflective
AR as required
AR atmospheric revitalization
ARA attitude reference assembly
ARA auxiliary recovery antenna
ARABSAT Saudi Arabian communications satellite
ARAP Aeronautical Research Associates of Princeton
ARAP astronaut rescue air pack
ARAR accident risk assessment report
ARC Ames Research Center (NASA, Moffet Field, California)
ARC aggregation of red blood cells
ARC automatic responsivity correction
ARCOMSAT Arab League communications satellite
ARCS aft reaction control subsystem
ARD abort region determinator
ARDC Air Research and Development Command (Air Force)
ARES advanced railroad electronic system
ARFDS automatic reentry flight dynamics simulator
ARGMA Army Rocket and Guided Missile Agency
ARIA advanced range instrumentation aircraft
ARIES astronomical radio interferometric Earth surveying
ARINC Aircraft Radio, Incorporated
ARIS ALS requirements information system
ARIS advanced range instrumentation ship
ARMA accumulator-reservoir manifold assembly
ARMS automated requirements management system
ARN action and reply notice
ARN additional reference number
ARP as-run procedure
ARPA Advanced Research Projects Agency (DOD)
ARPCS atmosphere revitalization pressure control system
ARPCS atmospheric revitalization pressure control system
ARPESH accurate and reliable prototype Earth sensor head
ARQ automatic request
ARRS air recovery and rescue service
ARS ALS release system
ARS Air Rescue Service
ARS American Rocket Society
ARS air revitalization system (subsystem)
ARS atmosphere revitalization subsystem
ARS atmospheric revitalization section
ARS atmospheric revitalization system
ARS attitude reference system
ARSDA advanced radiation space defense application
ART automated reasoning tool
ARTCC air route traffic control center
ARTO Advanced Radiation Technology Office
ARTOOS Advanced Radiation Technology Office optical support
ARTS advanced remote tracking station
ARTS automated restricted tracking system
ARTS automated retrieval and tracking system
ARTSE Ada run-time support environment (for embedded systems)
ARU attitude reference unit
AS antispoof
AS&ASD Autonetics Sensors and Aircraft Systems Division
AS/CP attitude set/control panel
AS/RS automated storage and retrieval system
ASA American Standards Association
ASA abort sensor assembly
ASA adapter service area
ASA advanced system avionics
ASA aerosurface amplifier
ASA aerosurface servoamplifier
ASAC aerodynamic surfaces assembly and checkout
ASAP ACE Shuttle application processing
ASAP Aerospace Safety Advisory Panel
ASAP advanced sensor analysis program
ASAP as soon as possible
ASAPTS automated scheduling and product tracking system
ASAS aerodynamic stability augmentation system
ASAT antisatellite
ASATS antisatellite simulation
ASB airlock stowage bag
ASC American Satellite Corporation
ASC Ascension Island
ASC aerodynamic surface control
ASC aerosurface control
ASC airlock support component
ASC array stowage container
ASC automatic sensitivity control
ASC auxiliary switch normally closed
ASCADS aft station command and data system
ASCE American Society of Civil Engineers
ASCE airlock signal conditioning electronics
ASCII American Standard Code for Information Interchange
ASCOP Applied Science Corporation of Princeton (Division of EMR)
ASCP attitude set control panel
ASCS atmosphere storage and control subsystem (Spacelab)
ASCS atmospheric storage and control section
ASCS attitude stabilization and control system
ASD Aeronautical Systems Division (Air Force)
ASD advanced systems development
ASDE aerosurface driver electronics
ASDM aerosurface driver/monitor
ASDTIC analog-signal-to-discrete-time-interval converter
ASE advanced space engine
ASE aerospace support equipment
ASE airborne support equipment
ASE automatic support equipment
ASEA American Society of Engineers and Architects
ASED Avionics System Engineering Division (JSC)
ASF Atmospheric Science Facility
ASFT abbreviated system functional test
ASFTS auxiliary system function test stand
ASG Aeronautical Standards Group
ASG Avionic Subsystems Group
ASGPD attitude set and gimbal position display
ASI airspeed indicator
ASI amended shipping instructions
ASI augmented spark igniter
ASI augmented spark indicator
ASI augmented system ignition
ASIC application-specific integrated circuit
ASIC application-specific integration circuit
ASK amplitude shift keying
ASKA automatic system for kinematic analysis
ASL above sea level
ASL approved source list
ASLU antenna select logic unit
ASM American Society for Metals
ASM air-to-surface missile
ASME American Society of Mechanical Engineers
ASN average sample number
ASO Aviation Safety Office
ASO auxiliary switch normally open
ASP aerosurface position
ASP airborne science program
ASPI aerosurface position indicator
ASPP atmospheric and space plasma physics
ASPR armed service procurement regulation
ASPS annular suspension and pointing system
ASPSL ASPP Sortie Laboratory
ASQC American Society for Quality Control
ASR air-sea rescue
ASR automatic send and receive
ASR avionic system review
ASRE American Society of Refrigerating Engineers
ASRM abort solid rocket motor
ASRM advanced solid rocket motor
ASRS automated Shuttle requirement system
ASRS automated support requirements system
ASSD Autonetics Strategic Systems Division
ASSE American Society of Sanitary Engineers
ASSESS airborne science Shuttle experiments system simulation
ASSH advanced space systems hardening
ASSO assistant system security officer
ASST American Society for Steel Treating
AST Atlantic standard time
AST all-systems test
ASTB AGN&C simulation test bed
ASTD Advanced Space Technology Division
ASTE American Society of Tool Engineers
ASTF Aeropropulsion System Test Facility
ASTG Aerospace Test Group
ASTIA Armed Services Technical Information Agency
ASTM American Society for Testing Materials
ASTP Apollo-Soyuz Test Project
ASTRA advanced star tracker
ASTRO ascent trajectory optimization
ASTS avionic system test specification
ASVIB algorithm scoreboard vibrations
AT access tower
AT action time
AT assembly truss
AT&L acceptance test and logistics
AT&T American Telephone & Telegraph
ATA Air Transport Association
ATA abort time assembly
ATA advanced tactical aircraft
ATA aft test article
ATA assembly test article
ATA avionics test article
ATAC Advanced Technology Advisory Committee
ATC ATE computer
ATC Air Training Command
ATC ablative thrust control
ATC active thermal control
ATC air traffic control
ATC aircraft target computer
ATC assistant test conductor
ATC/FTD Air Training Command/Field Training Detachment
ATCA attitude translation control assembly
ATCO ambient temperature catalytic oxidizer
ATCS active thermal control system (subsystem)
ATDAP aircraft target data acquisition program
ATDB aerothermal data book
ATDB aerothermodynamic data book
ATDF automated test development folder
ATDP acceptance test data package
ATDP aircraft target data program
ATDRP aircraft target data reduction program
ATE aerospace training equipment
ATE airborne test equipment
ATE automated test equipment
ATE automatic test engineer
ATE automatic test equipment
ATF advanced tactical fighter
ATG Aerospace Test Group
ATG automated time line generator
ATH above the horizon
ATI average total inspection
ATIS automatic terminal information system
ATL Advanced Technology Laboratories
ATL Aero-Thermal Lab (Marquardt)
ATL Avionics Test Laboratory
ATLAS abbreviated test language for avionic systems
ATLAS analysis of thrust structure loads and stresses
ATM Apollo telescope mount
ATM ascent trajectory model
ATO abort to orbit
ATO automatic turn-on
ATOLL acceptance test of launch language
ATOP Ada technology operational planning
ATOS automated technical order system
ATP acceptance test procedure
ATP acceptance test program
ATP acquisition, tracking, and pointing
ATP activation test program
ATP advanced technical payroll
ATP airborne tracking and pointing
ATP authority to proceed
ATP-FC acquisition, tracking, and pointing fire control
ATPA alpha temperature probe assembly
ATPG automatic test program generator
ATPSE acquisition, tracking, and pointing system emulator
ATR air transport rack
ATR air transport radio
ATR air transport rating
ATR air transportation rack
ATRS automated training records system
ATS Atlantic tracking ship
ATS Atlantic tracking station
ATS acceptance test specification
ATS administrative telephone system
ATS administrative terminal system
ATS advanced technology satellite
ATS analog tone signal
ATS applications technology satellite
ATS assembly trusses and structure
ATS asynchronous task storage
ATS automatic terminal system
ATS automatic test set
ATS automatic transcribing system
ATT acceptance thermal testing
ATTACK advanced threat technology attack coordination and
ATTS automatic telemetry tracking system
ATU audio terminal unit
ATU audio/thermal unit
ATVC ascent thrust vector control (controller)
ATVC automatic thrust vector control
ATVCD ascent thrust vector control driver
ATVCS automatic thrust vector control system
AU accounting unit
AU astronomical unit
AUASAM automatic aimpoint selection and maintenance
AUB aft utility bridge
AUC average unit cost
AUCV advanced unmanned cargo vehicle
AUDF automated unit development folder
AUF authorized user file
AUP Ames unitary plan (wind tunnel)
AUTO-BF automatic body flap
AUTO-P automatic pitch control mode
AUTO-YR automatic yaw roll mode
AUTODIN automatic digital network
AUTOVON automatic voice network
AV audiovisual
AV average value
AVC automatic volume control
AVCG automatic vapor crystal growth
AVCOR algorithm vibration correlation
AVCS attitude and velocity control system (subsystem)
AVD air vehicle detection
AVE Avenal (TACAN station)
AVE aerospace vehicle equipment
AVE airborne vehicle equipment
AVE atmospheric variability experiment
AVE automatic volume expansion
AVID automated verification information data base
AVL Avionics Verification Laboratory
AVL address validity
AVLSI advanced, very large scale integration
AVO avoid verbal orders
AVRCS attitude, velocity, reaction control system
AVREL availability and reliability program
AVSM auxiliary video switch matrix
AVT acceptance vibration testing
AVVEU altitude/vertical velocity indicator electronic unit
AVVI altitude/vertical velocity indicator
AW airlock wall
AW assembly workstand
AWAA attack warning and attack assessment
AWACS advanced warning and control system
AWCS agency-wide coding structure
AWG Activation Working Group
AWG American wire gauge
AWI accommodation weight investigation
AWL augmented wire list
AWL automated wire list
AWPV automated weld process verification
AWS American Welding Society
AWS advance warning system
AWS air weather service
AWS automated wiring system
AXAF Advanced X-ray Astrophysics Facility
AZEL azimuth and elevation
Ada DOD high-level programming language
Adc amperes direct current
Al-Li aluminum lithium
ac alternating current
autoland automatic landing

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