NASA Acronyms - Full List
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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	accelerated assembly
AA	associate administrator
AA	accelerometer assembly
AA	affirmative action
AA	air-to-air
AA	airplane avionics
AA	American Airlines
AA	angular accelerometer
AA	antiaircraft
AA	Associate of Arts degree
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	abort advisory equipment
AAE	aerospace auxiliary equipment
AAE	American Association of Engineers
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	altitude controller assembly
ACA	annunciator control assembly
ACA	Associate Contractor Administration
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	acquisition control module
ACM	actual average cost per successful mission
ACM	Association of Computing Machinery
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	acceptance change notice
ACN	Ascension Island (STDN)

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	accelerated cost recovery system
ACRS	Advisory Committee on Reactor Safeguards
ACRV	assured crew return vehicle
ACS	advanced combat system
ACS	aft crew station
ACS	alternating current synchronous

ACS	altitude control and stabilization
ACS	American Chemical Society
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	acceptance data package
ADP	acceptance documentation package
ADP	Advanced Development Program (NASA)
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	aft end cone
AEC	aft events controller
AEC	American Engineering Council
AEC	Atomic Energy Commission
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	advanced electrical schematic
AES	American Electrochemical Society
AES	American Electroplaters Society
AES	analog event system
AES	atmosphere exchange system
AES	Auger electron spectroscopy
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	aft fuselage
AF	Air Force
AF	airframe

AF	audio frequency
AF	award fee
AF/DBS	areal fluid data base system
AF/IN	Air Force/Intelligence
AFA	airframe assembly
AFA	American Foundrymen's Association
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	advanced flexible processor
AFP	Air Force plant
AFP	Ariane-furnished property
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 specialty code
AFSC	Air Force Systems Command
AFSCF	Air Force Satellite Control Facility
AFSCF	Air Force Space Command Facility
AFSCF	Air Force Systems Command Facility
AFSCN	Air Force satellite control network
AFSCN	Air Force Space Command 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	abort guidance system
AGS	antigravity suit
AGS	ASPS gimbal system
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	abbreviated integration system test
AIST	advanced interferometric system technology
AIST	Agency of Industrial Science and 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	actuator mechanism
AM	Administration and Management Operations (KSC
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	aft motor controller
AMC	Air Material Command
AMC	Army Missile Command
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	area-to-mass ratio
AMR	Atlantic Missile Range
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	alphanumeric
AN	Army-Navy
ANA	Air Force-Navy aeronautical bulletin
ANARS	autonomous navigation and attitude reference system
ANC	active nutation control
ANC	Air Force-Navy-civil
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	abort once around
AOA	airborne optical adjunct
AOA	American Ordnance Association
AOA	angle of attack
AOC	annual operating cost
AOC	auxiliary output chip
AOCP	ac on-board computer program
AOCP	AVCS on-board computer program
AOCRD	acceptance and operational checkout requirements
AOCS	attitude and orbit control subsystem

AOD	advanced object data
AOD	Aircraft Operations Division (JSC)
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	acquisition of signal
AOS	ACTS optical system
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	accelerometer package
AP	access panel
AP	access point
AP	administrative procedure
AP	air pressure
AP	atmospheric and space physics
AP	autopilot
AP	Procurement, Supply, and Transportation (KSC
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	aggregation of red blood cells
ARC	Ames Research Center (NASA, Moffet Field, California)
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	advanced range instrumentation ship
ARIS	ALS requirements information system
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	Air Rescue Service
ARS	air revitalization system (subsystem)
ARS	ALS release system
ARS	American Rocket Society
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	abort sensor assembly
ASA	adapter service area
ASA	advanced system avionics
ASA	aerosurface amplifier
ASA	aerosurface servoamplifier
ASA	American Standards Association
ASAC	aerodynamic surfaces assembly and checkout
ASAP	ACE Shuttle application processing
ASAP	advanced sensor analysis program
ASAP	Aerospace Safety Advisory Panel
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	aerodynamic surface control
ASC	aerosurface control
ASC	airlock support component
ASC	American Satellite Corporation
ASC	array stowage container
ASC	Ascension Island
ASC	automatic sensitivity control
ASC	auxiliary switch normally closed
ASCADS	aft station command and data system
ASCE	airlock signal conditioning electronics
ASCE	American Society of Civil Engineers
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	advanced systems development

ASD	Aeronautical Systems Division (Air Force)
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	air-to-surface missile
ASM	American Society for Metals
ASME	American Society of Mechanical Engineers
ASN	average sample number
ASO	auxiliary switch normally open
ASO	Aviation Safety Office
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	all-systems test
AST	Atlantic standard time
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	abort time assembly
ATA	advanced tactical aircraft
ATA	aft test article
ATA	Air Transport Association
ATA	assembly test article
ATA	avionics test article
ATAC	Advanced Technology Advisory Committee
ATC	ablative thrust control
ATC	active thermal control

ATC	Air Training Command
ATC	air traffic control
ATC	aircraft target computer
ATC	assistant test conductor
ATC	ATE computer
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	acceptance test specification
ATS	Atlantic tracking station
ATS	automatic terminal system
ATS	automatic test set
ATS	automatic transcribing system
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	Atlantic tracking ship
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	aerospace vehicle equipment
AVE	airborne vehicle equipment
AVE	atmospheric variability experiment
AVE	automatic volume expansion
AVE	Avenal (TACAN station)
AVID	automated verification information data base
AVL	address validity

AVL	Avionics Verification Laboratory
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	advance warning system

AWS	air weather service
AWS	American Welding Society
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
B&P	budgetary and planning
B-L	bill of lading
B/A	barometric
B/A	boost/abort
B/A	buffer amplifier
B/C	bench check
B/L	baseline
B/M	bench maintenance
B/O	booster/orbiter
B/O	breakout
B/O	burnout
B/P	blood pressure
B/SC	brake/skid control

B/V	bleed valve
BA	bank angle
BA	breathing air
BAC	Boeing Aerospace Company
BAC	Boeing Aircraft Company
BAC	booster assembly contractor
BAC	budget at completion
BAC	buffer access card
BACS	body axis coordinate system
BAF	Barnes absorption filter
BAFO	best and final offer
BAI	barometric altitude indicator
BAIR	breathing air
BAN	budget allocation notice
BAROC	baroset correction
BARS	baseline accounting and reporting system
BAS	breathing air system
BASD	Ball Aerospace Systems Division
BASS	backup avionics system software
BATE	base activation test equipment
BATES	battlefield artillery tactical engagement system

BATSE	Burst and Transient Source Experiment
BAU	business as usual
BB	baseband
BB	brassboard
BB	breadboard
BBC	before-business clearance
BBN	Bolt, Beranek, and Newman
BBS	DEC all-in-one bulletin board system
BBXRT	broadband X-ray telescope
BC	base construction
BC	broadcast
BC	bus coupler
BC	baseline configuration
BC	battery charge
BC	battery conditioner
BC	bell cord
BC	beta cloth
BC	between centers
BC	binary counter
BC	bolt center
BCC	beacon control console

BCCT	break control command transducer
BCD	baseline concept definition
BCD	baseline configuration document
BCD	binary-coded data
BCD	budget change document
BCE	backup control electronics
BCE	burn control element
BCE	bus control element
BCH	base Chaudhuri-Hocquenghen
BCH	binary-coded hexadecimal
BCI	baseline configuration identification
BCID	baseline candidate item data base
BCLS	base cardiac life support
BCO	booster cutoff
BCP	base condemnation percent
BCP	benchmark control point
BCR	bar chart report
BCR	budget change request
BCRD	basic consolidated requirements document
BCRT	binary code range time
BCS	beam control system

BCT	bus configuration table
BCU	battery control unit
BCU	bus control unit
BCWP	budget costs for work performed
BCWS	budgeted cost for work scheduled
BD	binary decoder
BD	binary digit
BD	binary discrete
BDA	backup drive amplifier
BDA	Bermuda Island (STDN)
BDCR	baseline document change request
BDD	baseline definition document
BDD	burst detection dosimeter (IGS)
BDD	burst detector dosimeter
BDI	budget data and integration
BDP	burst detection processor (IGS)
BDP	burst detector processor
BDS-2	booster phase detection system
BDT	block data transfer
BDW	burst detector EMP sensor
BDW	EMP sensor

BDX	burst detection X-ray sensor
BDX	burst detector X-ray sensor
BDY	burst detector optical sensor
BE	beam expander
BE	bell end
BEAF	beam expander alignment function
BEC	backup event controller
BECO	booster engine cutoff
BER	bit error rate
BESS	biomedical experiment scientific satellite
BESS	biomedical experiment support satellite
BEST	booster exhaust study test
BET	best-estimate trajectory
BET	best estimate of trajectory
BETA	ballistic exploitation and target acquisition
BF	back feed
BF	beat frequency
BF	body flap
BFC	backup flight control (controller)
BFC	body flap control
BFCS	backup flight control system

BFEC	Bendix Field Engineering Corporation
BFL	back focal length
BFL	Bakersfield (TACAN station)
BFN	beam-forming feed network
BFO	beat frequency oscillator
BFP	buyer-furnished part
BFRP	boron fiber-reinforced plastic
BFS	backup flight software
BFS	backup flight system
BFSPLP	BFS payload preprocessor
BFSS	backup flight software system
BG	back gear
BH/MP	breather hose/mouthpiece
BHN	Brinell hardness number
BHP	brake horsepower
BHS	base heat shield
BI	background information
BIA	booster insertion and abort
BIA	bus interface adapter
BIB	blocked impurity band
BIBIB	back-illuminated blocked impurity band

BIC	bus interface controller
BILBO	built-in logic block observer
BIS	biocide injection system
BISC	biomedical instrumentation, scientific and crew
BIT	built-in test
BITE	built-in test equipment
BITS	budget impact tracking system
BIU	buffer interface unit
BIU	bus interface unit
BJR	blockhouse junction rack
BKNO3	boron-potassium nitrate
BLOW	booster lift-off weight
BLPG	buried long-period grating
BLS	bottom left side
BLV	bleed valve
BM	ballistic missile
BM	battle management
BM	bench maintenance
BM	body-mounted
BM	branch manager
BM	business manager

BM-TW/AA	ballistic missile tactical warning/attack
BM/C3	battle management and command, control, and
BMA	body-mounted accelerometer
BMAG	body-mounted attitude gyro
BMAP	buffer map
BMAS	body-mounted accelerometer system
BMB	base maintenance building
BMB	bench maintenance building
BMC3	battle management communications (three types)
BMD	ballistic missile defense
BMDATC	Ballistic Missile Defense Advanced Technology Center
BMDSCOM	Ballistic Missile Defense Systems Command
BME	bench maintenance equipment
BMEWS	ballistic missile early warning system
BMFT	German D-1 Spacelab payload
BMI	Battelle Memorial Institute
BMMD	body-mass measuring device
BMO	Ballistic Missile Office
BMO	ballistic missile organization
BMS	background measurement satellite
BMS	battle management simulation

BMTS	bench maintenance test set
BMU	bus monitor unit
BMVU	ballistic missile view
BN	ballistic number
BN	bullnose
BNS	bomb navigation system
BO	beating oscillator
BOA	broad ocean area
BOC	Base Operations Contract (contractor)
BOC	blowout coil
BOD	beneficial occupancy date
BOD	bright-object detector
BOE	break of entry
BOF	beginning of file
BOI	break of integrity
BOL	beginning of life
BOM	beginning of month
BOM	bill of material
BOP	baseline operations plan
BOP	basic overall polarity
BOPACE	Boeing plastic analysis capability for engines

BOS	backup operating system
BOS	bright-object sensor
BOSO	ballistic orbital support operations
BOT	beginning of tape
BOW	bill of work
BP	back pressure
BP	budgetary and planning
BP	buttock plane
BP	bandpass
BP	barber pole
BP	base plate
BP	bid and proposal
BP	blood pressure
BP	blueprint
BP	boilerplate
BP	boiling point
BPC	backpressure control
BPC	boost protective cover
BPD	baseline program document
BPD	baseline program documentation
BPI	boost phase intercept

BPMS	blood pressure measuring system
BPO	blanket purchase order
BPR	bimonthly progress report
BPR	bypass ratio
BPS	boost propulsion system
BPSK	biphase shift key
BPSK	biphase shift keying
BPT	body point
BPV	bipropellant valve
BR	bit rate
BRAVO	business risk and value of operation in space
BRCS	basic reference coordinate system
BRDF	bidirectional reflectance distribution function
BRF	band rejection filter
BRIL	budget receipt/issuance log
BRL	Ballistic Research Laboratory
BRM	baseline reference mission
BRM	biological research module
BRRS	Banana River Repeater Station
BRS	bottom right side
BS	backup subsystem

BS	beam splitter
BS	block specification
BSA	battery bus solar array
BSA	bus status/alternate bus table
BSC	brake skid controller
BSD	Ballistic Systems Division
BSDP	booster-stage discharge pressure
BSE	booster systems engineer
BSEE	Bachelor of Science degree in electrical engineering
BSGE	Bachelor of Science degree in general engineering
BSI	basic shipping instruction
BSI	Boeing Services International
BSI	booster situation indicator
BSM	beam-steering mechanism
BSM	booster separation motor
BSME	Bachelor of Science degree in mechanical engineering
BSP	business system planning
BSR	basic system release
BSR	BITE status register
BSRM	booster solid rocket motor
BSS	backup system services

BSTS	boost surveillance and tracking system
BSTS	boost surveillance tracking system
BSW	BFS software
BT	burn time (engine)
BTC	binary time code
BTC	bus tie contractor
BTE	bench test equipment
BTH	below the horizon
BTMS	body temperature measuring system
BTR	burn time remaining
BTR	bus transfer
BTU	bus terminal unit
BU&C/O	buildup and checkout
BUAER	Bureau of Aeronautics (Navy)
BUC	backup computer
BUC	Buckhorn (GSTDN)
BUFC	backup flight controller
BUIC	backup interceptor control
BUN	BITE update notice
BUORD	Bureau of Ordnance (Navy)
BUOU	backup optical unit

BUR	backup rate
BUSGEN	Bussin generator
BUSHIPS	Bureau of Ships
BV	balanced voltage
BV	boost vehicle
BV	booster vehicle
BVC	boost voltage converter
BW	bandwidth
BW	beam width
BW	bridge wire
BWG	Birmingham wire gauge
BWO	backward wave oscillator
Btu	British thermal unit
C	candle
C	core (metal)
C	cosine
C	cycle
C	hundred
C	capacitance
C	cathode
C	Celsius

C	center
C	centigrade
C	coefficient
C	complete
C	constant
C&C	command and control
C&C	communication and control
C&CS	command and control subsystem
C&D	communication and data
C&D	controls and displays
C&DH	command and data handling
C&DP	control and data processor
C&DS	command and data simulator
C&DSS	communication and data subsystem
C&I	communication and instrumentation
C&M	control and monitoring
C&P	contracts and pricing
C&T	communication and tracking
C&TS	communications and tracking system
C&TSS	communication and tracking subsystem
C&W	caution and warning

C-BARS	classified baseline accounting and reporting system
C-C	carbon-carbon
C-C	center-to-center
C-DEL	complete delivery
C-RFE	C-band RF electronics
C-to-C	computer-to-computer
C/A	coarse acquisition (navigation signal)
C/A	code standard positioning service
C/B	circuit breaker
C/C	combustion chamber
C/D	countdown
C/DPM	cost/design performance management
C/F	center frequency
C/O	changeout
C/O	checkout
C/O	contamination/overpressure
C/O	cutoff
C/P	cold plate
C/R	commutation rate
C/S	cost/schedule
C/S/P	cost/schedule/performance

C/SC	cost/schedule control
C/SCS	cost/schedule control system
C/SCSC	cost and schedule control system criteria
C/SCSC	cost/schedule control systems criteria
C/SR	cost/schedule report
C/SSR	cost/schedule status report
C/T	control and timing
C/W	carrier wave
C/W	caution and warning
C2	command and control
C2I	command, control, and intelligence
C2S	command and control subsystem
C3	command, control, and communications
C3I	command, control, communications, and intelligence
CA	carrier aircraft
CA	completion of assembly
CA	cone angle
CA	contract advice
CA	contract award
CA	corrective action
CA	cost account

CA	critical analysis
CAA	Civil Aeronautics Administration
CAA	composite audio amplifier
CAA	cost account authorization
CAALIS	computer-aided assembly-line inspection system
CAAT	computer-aided assembly tool
CAB	Civil Aeronautics Board
CAB	Civil Aviation Board
CAB	computer address bus
CAB	Corrective Action Board
CAB	Cost Audit Board
CACB	center aisle connector bracket
CACC	communications and configuration console
CAD	computer-aided design
CAD-OPS	computer-aided design costing for operations
CADAM	computer graphics augmented design and manufacturing
CADDS	computer-aided design and drafting system
CADE	controller/attitude direct electronics
CADFISS	computation and data flow integrated subsystem
CADS	command and data simulator
CADS	computer-aided design system

CADSI	communication and data systems integration
CADU	control and display unit
CAE	computer-aided engineering
CAE	corrective action engineer
CAFB	Chanute Air Force Base
CAI	computer-aided instruction
CAIT	computer-aided instruction terminal
CAIT	computer-aided instruction trainer
CAL	canister airlock
CAL	computer-aided logistics
CAL	contract advice letter
CAL	Cornell Aeronautical Laboratory
CALS	computer-aided acquisition and logistics support
CALS	computer-aided logistics system
CALST	Cornell Aeronautical Laboratory Shock Tunnel
CAM	carrier aircraft modification
CAM	Civil Aeronautics Manual
CAM	computer annunciation matrix
CAM	computer-aided manufacturing
CAM	content-addressable memory
CAM	cost account manager

CAMERA	control and monitoring equipment resource allocation
CAMP	common Ada missile package
CAMP	computer-aided message processing
CAN	certification analysis network
CAO	Cost Administration Office
CAP	capability assurance program
CAP	computer application program
CAP	contractor-acquired property
CAP	cost account package
CAP	cost account plan
CAP	crew activity plan
CAPRI	capacitance rate integrator
CAPS	common attitude pointing system
CAPS	crew activity planning system
CAPS	crew altitude protection suit
CAPS	crew altitude protection system
CAPSS	computer-aided planning and scheduling system
CAR	certification analysis requirements
CAR	certification approval request
CAR	configuration and acceptance review
CAR	contractual action request

CAR	corrective action record
CAR	corrective action report
CAR	corrective action request
CAR	customer acceptance review
CARB	Central Acquisition Review Board
CARDE	Canadian Armament Research and Development Establishment
CARID	customer acceptance report item disposition
CARID	customer acceptance review item disposition
CARM	customer accommodation requirement model
CARR	customer acceptance readiness review
CARR	customer accommodation requirement representative
CARS	configuration accounting and reporting system
CAS	calibrated airspeed
CAS	CITE augmentation system
CAS	command augmentation system
CAS	computer airspeed
CAS	configuration accounting system
CAS	cooperative application satellite
CAS	cost accounting standard
CAS	crew accommodation system
CAS-P	CAS pitch control mode

CAS-YR	CAS yaw roll control mode
CASB	Cost Accounting Standards Board
CASE	care application service element
CASE	computer-aided system engineering
CASE	computer-automated software engineering
CASES	control and structures experiments for space
CASO	cancellation addendum sales order
CASP	change assessment summary package
CASR	cost and schedule reporting system
CASS	CITE augmentation support system
CASS	consolidated automated support system
CAT	computer-aided test
CAT	control attenuator timer
CAT-2	communications and tracking comprehensive analysis tool
CATS	change action tracking system
CATS	correspondence action tracking system
CAU	command acquisition unit
CAU	command activation unit
CAU	customer acquisition unit
CAWG	Customer Accommodation Working Group
CB	center of buoyancy

CB	circuit breaker
CB	coax (or coaxial) interface bracket
CB	control board
CBA	C-band transponder antenna
CBA	collective bargaining agreement
CBARS	classified baseline accounting and reporting system
CBB	contract budget baseline
CBC	change board commitment
CBC	complete blood count
CBE	connector bracket experiment
CBIL	common and bulk items list
CBO	Congressional Budget Office
CBP	connector bracket power
CBR	California bearing ratio
CBS	connector bracket signal
CBSA	cargo bay stowage assembly
CBT	computer-based training
CBV	cabin bleed valve
CBW	constant bandwidth
CBX	C-band transponder
CBrF3	bromotrifluoromethane (fire-extinguishing material)

CC	carbon-carbon
CC	contract completion
CC	control center
CC	corner cube
CC	cost center
CC	crew certified
CC	crew compartment
CC	channel controller
CC	closing coil
CC	color code
CC	commercial control
CC	communications control
CC	compatibility change
CC	computer center
CC	contamination control
CCA	communications carrier assembly
CCA	contract change authority
CCA	contract change authorization
CCAFS	Cape Canaveral Air Force Station
CCATS	command communications and telemetry system
CCB	Change Control Board

CCB	Configuration Control Board
CCBD	Configuration Control Board directive
CCBD	Control Change Board directive
CCC	central computer complex
CCC	command control console
CCC	communication control center
CCC	complex control center
CCC	computer checkout console
CCC	Consolidated Controls Corporation
CCC	contaminant control cartridge
CCC	controller checkout console
CCC	coordinate conversion computer
CCCD	crew compartment configuration drawing
CCD	central command decoder
CCD	charge-coupled device
CCD	checkout command decoder
CCD	constants change display
CCDR	contractor critical design review
CCE	computer command engineer
CCE	continuous control evaluator
CCF	central computer facility

CCF	converter compressor facility
CCFF	Cape Canaveral Forecast Facility
CCFT	controlled current feedback transformer
CCHS	crew compartment heat shield
CCIM	command computer input multiplexer
CCIR	International Radio Consultative Committee
CCL	closed-circuit loop
CCL	commonality candidate list
CCL	critical characteristics list
CCM	controlled carrier modulation
CCM	counter-countermeasure
CCM	crew/cargo module
CCME	contract change mass estimate
CCMS	checkout, control, and monitor subsystem (LPS)
CCMS	command, control, and monitor system
CCMTA	Cape Canaveral Missile Test Annex
CCN	contract change negotiation
CCN	contract change notice
CCN	contract change notification
CCO	contract change order
CCO	current-controlled oscillator

CCO	customer contracting officer
CCOH	corrosive contaminants, oxygen, and humidity
CCP	center console panel
CCP	contamination control plan
CCP	contract change proposal
CCP	controlled components program
CCP	corrosion control plan
CCP	cost control program
CCP	Change Control Panel
CCP	change control package
CCP	commercial change proposal
CCP	computer control panel
CCP	configuration change point
CCP	Configuration Control Panel
CCP	configuration control phase
CCP	configuration control point
CCPDSR	common center processing and display system replacement
CCPDSR	communications center processing and display system
CCR	cargo compatibility review
CCR	configuration control record
CCR	contract change record

CCR	contract change request
CCR	contractor change review
CCR	control center rack
CCRA	Cape Canaveral reference atmosphere
CCRF	consolidated communication recording facility
CCS	central computer and sequencer
CCS	central control section
CCS	central control station
CCS	command and communication system
CCS	complex control set
CCS	computer core segment
CCS	console communication system
CCS	contamination control system
CCS	contract control system
CCSD	Chrysler Corporation Space Division
CCSD	Collins Communications Systems Division
CCSDS	Consultative Committee for Space Data Systems
CCSR	carbon-carbon survivable radiator
CCSR	crew compartment stowage review
CCT	command/control transmitter
CCT	computer-compatible tape

CCTCF	communication circuit technical control facility
CCTV	closed-circuit television
CCU	camera control unit
CCU	central control unit
CCU	communications carrier umbilical
CCU	communications carrier unit
CCU	coupling control unit
CCU	crew communications unit
CCU	crew compartment umbilical
CCU	crewman communications umbilical
CCV	chamber coolant valve
CCVA	chamber coolant valve actuator
CCW	counterclockwise
CCZ	command and control zone
CD	call director
CD	candela (luminous intensity)
CD	coefficient of drag
CD	coin dimple
CD	cold-drawn
CD	command decoder MDM
CD	components demonstration

CD	countdown
CD	current density
CD&SC	Communications, Distribution, and Switching Center
CD/V	concept definition and validation
CDA	command and data acquisition
CDA	critical design audit
CDAS	configuration design analysis simulation
CDAS	configuration development analysis and simulation
CDAS	configurations development analysis simulation
CDAS	core design analysis simulation
CDB	central data buffer
CDB	command data base
CDB	computer data bus
CDBFR	common data buffer
CDC	classified document control
CDC	Collins Defense Communications
CDC	command and data handling console
CDC	Computer Development Center (NASA)
CDC	confined detonating cord
CDC	Control Data Corporation
CDC	countdown clock

CDCD	cargo design control drawing
CDCD	Collins Defense Communications Division
CDCM	coupling display, manual control IMU
CDCO	coupling display, manual control optics
CDD	command decoding and distribution
CDD	common data dictionary
CDDB	common diagnostic data base
CDDT	countdown demonstration test
CDF	cable distribution frame
CDF	central data facility
CDF	circuit design fabrication
CDF	combined data file
CDF	confined detonating fuse
CDF	cool-down facility
CDF&TDS	circuit design, fabrication, and test data
CDG	Concept Development Group
CDH	constant delta height
CDH	constant differential height
CDI	contract definition instruction
CDI	course deviation indicator
CDID	contract data item description

CDM	communications data manager
CDM	configuration design module
CDMA	code division multiple access
CDMS	command and data management system (subsystem)
CDMS	contractor data management system (VAFB)
CDN	CDR discrepancy notice
CDNR	CDR discrepancy notice record
CDOM	chief draftsman office memorandum
CDP	command data processor
CDP	computational data processing
CDP	computer data processing
CDP	confidence development program
CDP	critical design parameter
CDPA	classified data preparation area
CDPIS	command data processing and instrumentation system
CDQ	certificate of qualification
CDQR	critical design and qualification review
CDR	cleaning, decontamination request
CDR	command destruct receiver
CDR	conceptual design review
CDR	configuration design review

CDR	contract data requirements
CDR	critical design review
CDRL	contract data requirements list
CDRR	contract documentation requirements record
CDRS	contract data requirements schedule
CDS	cavity digitizing system
CDS	control and display system
CDS	control data system
CDS	controller select direction
CDS	coupling display system
CDS	central data subsystem (LPS)
CDS	central data system
CDS	closeout door system
CDS	cold-drawn steel
CDS	computer design and simulation
CDS	configuration design system
CDS	configuration development system
CDS	consolidated direct support
CDSC	Communication Distribution and Switching Center
CDSC	coupling-display scanning-telescope manual control
CDSF	commercially developed space facility

CDSL	Computer Data System Laboratory
CDSR	contract data status report
CDSR	cost data summary report
CDT	central daylight time
CDT	command descriptor table
CDT	compressed data tape
CDT	configuration data table
CDT	countdown time
CDU	computer display unit
CDU	coupling data unit
CDU	coupling display unit
CDU	CRT display unit
CDUM	coupling display unit IMU
CDUO	coupling display unit optics
CDW	command data word
CDW	computer data word
CDW	control data word
CE	cargo element
CE	change engineer
CE	change evaluation
CE	civil engineering

CE	control element
CE	Corps of Engineers
CE	cost element
CE	crew equipment
CE	current expendable
CE/CK	computer entry/control keyboard
CEA	circular error average
CEA	Computer Engineering Associates
CEA	control electronics assembly
CEC	Civil Engineering Corps
CEC	Consolidated Electrodynamics Corporation
CEC	Consolidated Electronics Corporation
CEC	control electronics container
CEC	control encoder coupler
CECP	compatibility engineering change proposal
CEDC	cyclic error detection code
CEEP	composite entry evaluation program
CEF	comsec equipment facility
CEI	configuration end item
CEI	contract end item
CEIAC	Coastal Engineering Information Analysis Center

CEIS	combined elements and integrated systems
CEIS	contract end item specification
CEIT	cargo equipment integrated test
CEIT	crew equipment integration test
CEIT	crew equipment interface test
CELSS	controlled ecological life support system
CELV	commercial expendable launch vehicle
CEM	cost estimating method
CEMF	counterelectromotive force
CEO	chief engineer's office
CEO	chief executive officer
CEP	circle of equal probability
CEP	circular error probability
CEP	circular error probable
CEP	comsec equipment program
CEP	configuration evaluation plan
CEPS	CITS expert parameter system
CEQ	Council on Environmental Quality
CER	cost estimating relationship
CES	combined Earth sensor
CES	concept evaluation study

CES	conical Earth sensor
CES	control electronics section
CES	crew escape system
CESA	Canadian Engineering Standards Association
CET	clutter equivalent target
CET	combined element test
CETA	crew and equipment translation aid
CETF	Critical Evaluation Task Force
CEU	control electronics unit
CF	carrier frequency
CF	center forward
CF	center of flotation
CF	centrifugal force
CF	completion form
CF	consequence of failure
CF	corner fitting
CFAE	contractor-furnished airborne equipment
CFAR	constant false alarm rate
CFC	central fire control
CFC	chlorofluorocarbon
CFD	computational fluid dynamics

CFD	converter frequency to dc voltage
CFD	cumulative frequency distribution
CFE	central framework executive
CFE	consolidated front end
CFE	contractor-furnished equipment
CFE	critical function equipment
CFE	customer-furnished equipment
CFES	continuous flow electrophoresis system
CFI	card format identifier
CFM	customer-furnished material
CFP	conceptual flight profile
CFR	Code of Federal Regulations
CFRP	carbon-fiber-reinforced plastic
CFSD	critical-function sequence diagram
CFSR	contract fund status report
CFSR	contract funds status review
CFSTI	Clearinghouse for Scientific and Technical Information
CFT	cross-functional team
CFY	company fiscal year
CGAD	Collins General Aviation Division
CGAU	cabin gas analysis unit

CGC	command guidance computer
CGF	command generation function
CGL	comprehensive general liability
CGP	central grounding point
CGSS	cryogenic gas storage system
CH	case hardening
CH	control house
CH/SL	certified hardware/software list
CH4	methane
CHARM	composite high-altitude radiation model
CHI	computer-to-human interface
CHIP	College Hire Indoctrination Program
CHL	certified hardware list
CHR	Cooper-Harper rating
CHROMEX	chromosome and plant cell division in space
CHSF	cargo hydrazine service facility
CHW	command header word
CHX	cabin heat exchanger
CHX	condensing heat exchanger
CI	cast iron
CI	crew interface

CI	center of impact
CI	certification inspection
CI	color interior film
CI	configuration inspection
CI	configuration item
CI	continuous interlock
CI	contract initiation
CI	course invalid
CIA	Central Intelligence Agency
CIA	configuration identification accounting
CIA	control interface assembly
CIA	controller interface assembly
CIAP	climatic impact assessment program
CIB	Change Impact Board
CIB	Change Implementation Board
CIB	control interface block
CIC	cargo integration contractor
CIC	command interface control
CIC	control and information center
CIC	critical item consolidation
CICC	cargo integration control center

CICCR	configuration information control center requirement
CICU	communication interface control unit
CICU	computer interface conditioning unit
CID	cable interconnect diagram
CID	charge injection device
CID	computer interface device
CIDL	configuration item data list
CIDR	critical intermediate design review
CIDSC	contractor in-house data support capability
CIE	cargo integration equipment
CIE	communications interface equipment
CIF	Central Information Facility (AMR)
CIF	central instrumentation facility
CIG	Cable Integrity Group
CIG	Communications and Interface Group
CIG	compound interlace grating
CIG	Connector Integration Group
CIG	Connector Integrity Group
CII	change installation instruction
CII	configuration item identifier
CIJB	cradle interface junction box

CIL	critical items list
CIM	computer input multiplexer
CIM	computer-integrated manufacturing
CIMS	consolidated information management system
CIN	center information network
CIN	change identification number
CIN	change identifier number
CINC	commander-in-chief
CINCAD	commander-in-chief, Air Defense
CINCNET	commander-in-chief network
CINCNORAD	commander-in-chief, North American Aerospace
CINCSAC	commander-in-chief, Strategic Air Command
CINCSBL	commander-in-chief, Space-Based Laser
CIP	cast-iron pipe
CIP	change implementation plan
CIP	Class 1 Integration Plan
CIP	communications interface processor
CIP	control and interface panel
CIR	cargo integration review
CIR	configuration inspection report
CIR	critical item report

CIRD	cargo integration review dry run
CIRHS	critical items and residual hazards list
CIRM	celestial infrared mapping
CIRM	celestial infrared measurements
CIRRIS	cryogenic infrared radiance instrumentation for Shuttle
CIS	cargo integration schedule
CIS	central integration site
CIS	change impact summary
CIS	communication interface system
CIS	contractor's information submittal
CISS	Centaur integrated support structure
CIT	California Institute of Technology
CIT	CAP initialization tape
CIT	critical item tag
CITE	cargo integration test equipment
CITS	central integrated test system
CIU	communication interface unit
CIU	computer interface unit
CIU	controller interface unit
CIVT	cargo interface verification test
CIVU	cargo integration verification unit

CIWG	Cargo Integration Working Group
CKRA	Cape Kennedy reference atmosphere
CL	centerline
CL	closed loop
CL	coefficient of lift
CL	confidence level
CLAES	cryogenic limb array etalon spectrometer
CLAS	computerized loads analysis system
CLC	change letter control
CLC	Computer Liaison Committee
CLF	Clear Lake facility
CLF	controller, load forward
CLIN	contract line item number
CLIP	combined laser instrumentation package
CLIPS	C-language inferencing for production systems
CLM	care logic module
CLM	circumlunar mission
CLMC	central logistics management center
CLOT	combined loads orbiter test
CLOUDSAT	cloud cover statistical analysis program
CLRB	Cost Limit Review Board

CLS	contingency landing site
CLSO	contingency landing support officer
CM	cargo manager
CM	control monitor
CM	countermeasure
CM	crew module
CM	center of mass
CM	change management
CM	circular mil
CM	command module
CM	configuration management
CM	configuration monitor
CM	consumable management
CM	control mode
CM&S	communications maintenance and storage
CMA	configuration management accounting
CMACS	central monitor and control system
CMAG	cruise missile advanced guidance
CMAO	contract management assistance officer
CMAR	configuration management action request
CMAT	compatible material

CMB	Configuration Management Board
CMC	central maintenance computer
CMC	command module computer
CMC	crew module computer
CMCS	centralized maintenance computer system
CMD	controller, main display
CMDB	configuration management data base
CMDM	control multiplexer/demultiplexer
CMDS	configuration management data system
CME	commercial measuring equipment
CMF	controller, motor, forward
CMG	control moment gyro
CMIF	common module integration facility
CMIS	common module integration simulator
CMIS	computer management information system
CMIS	configuration management information system
CMIS	control monitor isolation subsystem
CML	commands and measurement list
CMM	CM Manual
CMM	condition-monitored maintenance
CMM	controller, motor, midbody

CMM	coordinate measurement machine
CMN	contract master network
CMO	class mix option
CMO	Configuration Management Office
CMOS	complementary metal oxide semiconductor
CMOS/SOS	complementary metal oxide semiconductor/silicon
CMP	Configuration Management Panel
CMP	configuration management plan
CMPP	configuration management program plan
CMR	center materials representative
CMR	common mode rejection
CMR	configuration management representative
CMR	contractor management review
CMRB	Contractor Material Review Board
CMRP	configuration management requirements plan
CMRR	common mode rejection ratio
CMRS	configuration management requirements standard
CMS	change management system
CMS	code management system
CMS	component mode synthesis
CMS	configuration management system

CMS	contract master schedule
CMS	conventional monitoring system
CMS-2	Cambridge Monitoring System (IBM computer program)
CMSI	command monitor system interface
CMT	critical military target
CMTS	computerized maintenance test system
CMU	control and monitor unit
CMV	common mode voltage
CMVAS	configuration management verification accounting system
CMW	compartmented mode work station
CN	change notice
CNC	computer numerical control
CNC	computer numerically controlled
CND	cannot duplicate
CNES	Centre National D'Etudes Spatiales (French National Space Studies Center)
CNRL	Communications and Navigation Research Laboratory
CNWDI	critical nuclear weapons design information
CO	carbon monoxide
CO	Cargo Operations (KSC directorate)
CO	change order
CO	contracting officer

CO*A	cesium-dideuterium-arsenate
CO2	carbon dioxide
COA	center operations area
COAS	crewman optical alignment sight
COB	communications office building
COBE	Cosmic Background Explorer
COBOL	common business-oriented language
COC	certificate of completion
COC	close-open-close
COCOMO	constructive cost model
COD	Center Operations Directorate (JSC)
COD	crack opening displacement
COF	construction of facilities
COF	cost of facilities
COFAC	construction facility
COFI	checkout and fault isolation
COFR	certificate of flight readiness
COFR	certification of flight readiness
COFW	certificate of flight worthiness
COGMAN	center of gravity of payload manifest
COI	conflict of interest

COIL	chemical oxygen-iodine laser
COIM	checkout interpreter (software) module
COL	checkout language
COLA	cost-of-living adjustment
COM	computer output microfiche
COM	computer output microfilm
COM-M	common mode
COMAS	combined orbital maneuvering and abort system
COMAT	compatibility of materials
COMP	computation of rendezvous targeting
COMPOOL	common data pool
COMPSIM	concept mission performance simulation
COMSAT	communications satellite
CONAD	CONUS defense
CONUS	continental United States
COP	central operations program
COP	co-orbiting platform
COP	coefficients of performance
COP	combined operations plan
COP	contingency operations plan
COQ	certificate of qualification

COR	contracting officer representative
COR	contractor.s operations review
CORA	coherent optical radar amplifier
CORE	common operational research equipment
COS	carry-on oxygen system
COS	checkout station
COS	console operating system
COSATI	Committee on Scientific and Technical Information
COSI	closeout system installation
COSM	checkout servicing and maintenance
COSMIC	Computer Software Management and Information Center
COSPAC	cost/schedule planning and control
COSTA	cost accounting (code)
COT	critical optical technology
COTR	contracting officer's technical representative
COTS	commercial off the shelf
COV	cutoff value
CP	candlepower
CP	computer program
CP	console processor
CP	control panel

CP	control point
CP	coordinated procurement
CP	Cargo Projects Office (KSC)
CP	center of pressure
CP	checkpoint
CP	chemically pure
CP	circular pitch
CP	cold plate
CP	cold-punched
CP	communication processor
CP-PCO	Cargo Projects Program Control Office
CPA	change proposal analyst
CPA	contingency planning aid
CPA	critical path analysis
CPAF	cost plus award fee
CPAR	controlled parts approval
CPC	Cargo Processing Contract (contractor)
CPC	central planning center
CPC	characteristic properties code
CPC	computer program component
CPC	control pressure conditioner

CPCB	Crew Procedures Control Board
CPCEI	computer program contract end item
CPCI	computer program change instruction
CPCI	computer program configuration item
CPCR	computer program change request
CPCR	crew procedure change request (Form 482)
CPD	Crew Procedures Division
CPD	crew passive dosimeter
CPDDS	computer program detail design specification
CPDP	computer program development plan
CPDP	computer program development program
CPDR	contractor's preliminary design review
CPDS	computer program design specification
CPDS	computer program detailed specification
CPDS	computer program development specification
CPDS	crew procedures documentation system
CPE	chief program engineer
CPE	chief project engineer
CPEI	computer program end item
CPES	crew procedures evaluator simulator
CPF	cargo processing facility

CPF	central processing facility
CPF	controller, power, forward
CPF	cost per flight
CPFF	cost plus fixed fee
CPFF/IF	cost plus fixed fee/incentive fee
CPG	Change Planning Group
CPG	coarse-pointing gimbal
CPI	consumer price index
CPI	crosspointer indicator
CPIC	Computer Program Integration Contract (contractor)
CPIF	cost plus incentive fee
CPIF/AF	cost plus incentive fee/award fee
CPM	cargo propulsion module
CPM	cell performance monitor
CPM	change proposal manager
CPM	computer program module
CPM	cost and performance measurement
CPM	critical path method
CPMP	crew procedures management plan
CPMP	crew products management plan
CPO	Central Planning Office (MSFC)

CPPS	computer program product specification
CPR	cost performance report
CPR	critical problem report
CPS	coarse pointing system
CPS	critical path schedule
CPSD	cross-power spectral density
CPSE	common payload support equipment
CPSR	contractor's procurement system review
CPSS	cold plate support structure
CPSS	critical phase system software
CPT	cargo processing technician
CPT	computer program tape
CPTA	core propulsion test article
CPU	central processing unit
CPU	command processor unit
CPU	computer printer unit
CPU	computer processing unit
CPV	common pressure vessel
CQDR	critical qualification design review
CQIM	configuration and quality information management
CR	card reader

CR	contractor's response
CR	control room
CR	customer's request
CR	cathode ray
CR	certification request
CR	certification requirement
CR	change record
CR	change request
CR	cold-rolled
CR	communication and radar
CR	configuration review
CRALT	CNES radar altimeter
CRAS	cost reduction alternative study
CRB	Change Review Board
CRB	Concept Review Board
CRB	Configuration Review Board
CRB	Correspondence Review Board
CRC	contractor-recommended code
CRC	cost reduction curve
CRC	cyclic redundancy check
CRD	change request disposition

CRD	cost reporting document
CRDP	certification review data package
CRDP	computer resource development plan
CRERS	crew rescue and equipment retrieval system
CRES	corrosion resistance steel
CRG	Change Review Group
CRG	Correspondence Review Group
CRI	certification requirements index
CRIS	calibration recall and information system
CRIS	connector removal and installation sheet
CRISD	computer resource integration support document
CRISD	computer resources integrated support document
CRISP	computer resources integrated support plan
CRN	cable routing notation
CRN	change review notice
CRN	contract revision number
CRO	cathode-ray oscilloscope
CRP	configuration requirements processing
CRPL	Cosmic Ray Physics Laboratory
CRR	cargo compatibility review
CRR	cargo readiness review

CRR	computer run report
CRR	critical requirements review
CRRES	combined release and radiation effects satellite
CRS	cold-rolled steel
CRS	computer resources support
CRS	Congressional Research Service
CRS	crew rescue system
CRSI	ceramic reusable surface insulation
CRT	cathode-ray tube
CRT	computer response time
CRTU	cryogenic radiator test unit
CRW	control read/write
CS	carbon steel
CS	control segment
CS	core segment
CS	crew simulator
CS	crew station
CS	cross-strapping
CS	current sensor
CS	Spacelab Operations Directorate
CS	cast steel

CS	center section
CS	change status
CS	checkout station
CS	common set
CS	communications system (subsystem)
CS	consumables status
CS	contractor share of variance from target cost
CSA	contract specification amendment
CSA	contractor support area
CSA	cyclic strain attenuator
CSAM	crinkled, single aluminized Mylar
CSAP	Control System Analysis Program
CSAT	combined systems acceptance test
CSB	Change Schedule Board
CSB	closely spaced basing
CSB	complex support building
CSC	Computer Sciences Corporation
CSC	computer software component
CSC	computer software configuration
CSC	conical-shaped charge
CSC	contingency support center (CCAFS)

CSC	cosecant computing amplifier
CSC	cost, schedule, and control
CSCB	contractor's summary cost breakdown
CSCD	control system command decoder
CSCI	computer software configuration item
CSCI	configuration software computer item
CSCS	central security control system
CSCSAT	commercial synchronous communication satellite
CSD	Chemical Systems Division
CSD	computer system director
CSD	contract start date
CSD	control system development
CSD	Crew Systems Division
CSDD	Control Systems Development Division (JSC)
CSDF	central source data file
CSDL	Charles Stark Draper Laboratory (MIT)
CSDM	Computer System Diagnostic Manual
CSDT	computer software data tape
CSE	common support equipment
CSE	communications systems engineer
CSE	computer support equipment

CSE	configuration switching equipment
CSE	cryostat servicing equipment
CSF	central supply facility
CSF	cost sensitivity factor
CSF	crew storage facility
CSFT	combined subsystem functional test
CSG	Concept Synthesis Group
CSI	coelliptic sequence initiation
CSI	control and structural integrity
CSI	control servo input
CSI	crew software interface
CSI	customer source inspection
CSIR	computer software integration review
CSIR	computer systems (hardware/software) integration review
CSIR	Council of Scientific and Industrial Research
CSIT	CAP system integration test
CSIU	core segment interface unit
CSL	command signal limiter
CSL	computer status light
CSL	critical sequence list
CSM	Cargo System Manual

CSM	command and service module
CSM	command service module
CSM	common support module
CSM	computer status matrix
CSMA/CD/TS	carrier sense multiple access/collision dlot
CSMP	continuous system modeling program
CSMP	control system modeling program
CSN	customer source number
CSO	closely spaced object
CSO	Complex Safety Office
CSOC	Consolidated Space Operations Center
CSOC	Consolidated Support Operations Center
CSOM	Computer System Operator's Manual
CSOP	crew systems operating procedure
CSP	certified special processor
CSPF	critical single-point failure
CSPL	certified special processor list
CSPO	Control Systems Procurement Office
CSPU	core segment processing unit
CSR	certification status report
CSR	check signal return

CSR	check status register
CSR	check status report
CSR	contract status report
CSR	cost, schedule, and risk
CSR	crew station review
CSRP	Computer and Software Review Panel
CSS	computer subsystem
CSS	control stick steering
CSS	core segment simulator
CSS	crew safety system
CSSE	control system simulation equipment
CSSR	cost, schedule status report
CST	capsule systems test
CST	central standard time
CST	combined systems test
CST	complex safety technician
CST	contract supplemental tooling
CST	crew software trainer
CST	crew station trainer
CST	crew systems trainer (one-g trainer)
CSTA	crew software training aid

CSTAR	continuous stellar-tracking attitude reference
CSTC	Consolidated Space Test Center
CSTS	cryogenic storage and transfer system
CSTU	combined systems test unit
CSU	central switching unit
CT	center tap
CT	central time
CT	compact tension
CT	crawler-transporter
CT	current transformer
CTA	command and telemetry assembly
CTA	controlled thrust assembly
CTC	camera, timing, and control
CTC	chief test conductor
CTCI	contract technical compliance inspection
CTCP	configuration test change period
CTCS	central thermal control system
CTDU	cross-link transponder data unit
CTE	central timing equipment
CTE	coefficient of thermal expansion
CTF	commit to flight

CTG	Central Training Group
CTG	commonality task group
CTI	critical transportation item
CTIS	crawler-transporter intercom system
CTL	Canoga Test Laboratory
CTL	combat training launch
CTL	Component Test Laboratory (NASA)
CTL	controller tape location
CTL	critical to launch
CTM	contract technical manager
CTM	crystalline transitional material
CTN	Canton Island
CTN	certification test network
CTP	communications timing procedure
CTP	cyclic time processor
CTPD	Crew Training and Procedures Division (JSC)
CTR	certification test requirement
CTR	certification test review
CTR	contract technical representative
CTRS	component test requirements specification
CTS	Canadian technology satellite

CTS	coordinate transformation system
CTS	change tracking system
CTS	command and telemetry subsystem
CTS	communications and tracking system
CTS	communications technology satellite
CTS	computer test set
CTS	computerized training system
CTS	console test set
CTS	contractor technical service
CTT	command transfer tape
CTU	central timing unit
CTU	command and telemetry unit
CTU	command telemetry unit
CTV	compatibility test van
CU	control unit
CU	crystal unit
CUB	Commonality Usage Board
CUC	computer usage control
CUDS	cumulative data statistics
CUE	command uplink electronics
CUE	command use equipment

CUE	common usage equipment
CUE	communication unit executor
CUF	cross-utilization file
CUI	common usage item
CUI	common user interface
CUIL	common usage item list
CUL	common use list
CUP	commonality usage proposal
CUT	coordinated universal time
CV	carrier vehicle
CV	cryptovariable
CV	Deployable Payloads Operation (KSC CO directorate)
CV	check valve
CV	coefficient of variation
CV	computer vision
CV	Computervision
CV	Computervision (computer-aided design and drafting
CV	configuration verification
CV	conventional vehicle
CV	core vehicle
CVA	Convair Astronautics

CVAD	converter voltage, ac to dc
CVAS	configuration verification accounting system
CVD	chemical vapor deposition
CVDA	converter voltage discrete, ac
CVE	complete vehicle erector
CVF	circular variable filter
CVI	carbon vapor impregnation
CVI	chemical vapor infiltration
CVI	configuration verification inspection
CVR	change verification record
CVR	configuration verification review
CVRD	converter variable resistance to dc voltage
CVSD	continuous variable slope data
CVT	communications vector table
CVT	concept verification testing
CW	caution and warning
CW	clockwise
CW	command word
CW	continuous wave
CW	continuous waveform
CWA	caution and warning annunciator

CWA	clean work area
CWA	controlled work area
CWBS	contract work breakdown structure
CWE	caution and warning electronics
CWEA	caution and warning electronic assembly
CWEU	caution and warning electronics unit
CWFSP	caution and warning/fire suppression panel
CWG	Commonality Working Group
CWG	Communications Working Group
CWG	constant-wear garment
CWLM	caution and warning limit module
CWS	caution and warning system
CWSU	condensate water servicing unit
CWT	code walk-through
CY	calendar year
CYC	cyclic mission-unique process
CYI	Canary Islands
CZCS