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- 3 GLOSSARY OF ACRONYMS AND ABBREVIATIONS
SATURhl MISTORY DOCIJP? S?l'P !_ln;~ersi;~ of r?/el,ama i?c;~!.srch Instituta
History OF Science & Technolucy Group
Date --------.-- Doc. No. --------
A P O L L O P R O G R A M
GLOSSARY O F
ACRONYMS
AND
ABBREVIATIONS
This glossary of acronyms and abbreviations commonly found in
Apollo P rogram documentation has been compiled by the Manned Space-
craf t Center Historical Office.
The purpose of this glossary i s to provide a working tool for his-
torians and other persons performing research activity. Such personnel,
in their work, will undoubtedly encounter many additional i tems which
should be included in this glossary. Therefore, this has been purposely
double-spaced to provide room for these additional entr ies .
Ivan D. E r t e l
July 1, 1969
AA
AAA
AAE
AAM
AAO
ABL
ABM
ABMA
ABT
AC o r a c
ACA
ACBWG
ACC
ACCEL
ACCUM
ACE
ACED
ACERP
Antenna assembly
Active acquisition aids
Antenna assembly electronics
Air-to-air miss i le
Astronaut Activities Office
A l l e g a n ~ Ballist ics Laboratory
Advanced bill of mate r ia l s
Army Ballistic Missile Agency
Air bearing table
Allis Chalme r s Manufacturing Company Alternating cur ren t Audio center
Attitude control assembly Attitude controller assembly Audio center assembly
Apollo Reentry Communications Blackout working Group
Automatic control console
Acceleration Accelerometer
Accumulator
Acceptance checkout equipment Automatic checkout equipment
AC Electronics Division
Advanced Communication Electronics Research P lan
ACES
ACK
ACM
ACME
ACOE
ACOUST
A C P
ACPM
ACR
ACRE
A&C ro l l
ACRC
ACS
ACSP
ACT
ACTM
ACTR
A I D
ADA
ADAPT
ADC
Acceptance checkout and evaluation sy s t em Acceptance control equipment sect ion
Acknowledge
Apollo configuration managem ~ n t Audio cen te r module
Attitude control and maneuver e lec t ron ics
Automatic checkout equipment
Acoustic
kpol lo cneckout p rocedure Audio control panel.
Attitude control propulsion motor
Advent control room
Automatic checkout and read iness equipment
A&C c lu s t e r of RCS engines controll ing ro l l
Audio cen te r - r e ce iver (NAA)
Attitude control subsys tem
AC Spark Plug Division of Genera l Motors
Actuator
Audio cen t e r - t r an smi t t e r (NAA)
Actuator
Analog to digital ( conve r t e r s )
Angular differentiat ing acce le romete r
A i r Defense Command Analog t o digital conver te r
ADCN
ADF
ADMT
ADP
ADPL
ADPS
ADPT
ADS
ADTD
ADVAC
ADVEP
AE
A&E
AEA
AEB
AEC
AED
AEDC
AEDC-VKF
AELD
Advance drawing change notice
Aeronutronic Division, Ford Motor Company Automatic direction finding (equipment)
Agena detailed maneuver table
Acceptance data package Automatic data processing
Apollo Data Processing Laboratory (NAA)
Ascent and descent propulsion subsystem Automatic data processing system
Adapter
Address display subsystem
Apollo docking tes t service
Advent acquisition module
Advent ephemeris module
Ascent engine
Azimuth and elevation
Abort electronics assembly
Aft equipment bay
Atomic Energy Commission
Agena ephemeris data Astro-Electronics Division, RCA
Arnold Engineering Development Center
Arnold Engineering Development Center- - / 0
Von Karman Facility
Ascent engine latching device
A E P
AEPG
AES
A F
AFB
AFBMD
AFBMTC
AFBSD
AFC
AFCRC
AFCRL
AFCS
AFD
AFDO
AFETB
AFETR
AFFTC
AFLC
AFMDC
AFMSTS
Ascent engine pressur izat ion
Army Electronics Proving Ground
Apollo extension system
Air F o r c e
Ai r F o r c e Base
Ai r F o r c e Ball ist ics Missile Division
Air F o r c e Ball ist ic Missiles Training Center (Vandenberg AFB)
Air Fo rce Ballistic Systems Division (Norton AFB, San Bernardino, Calif. )
Automatic frequency control
Ai r F o r c e Cambridge Research Center (Hanscom Field, Bedford, Mass . )
Air F o r c e Cambridge Research Laboratory
Automatic flight control system
Assis tant Flight Director
Assis tant Flight Dynamics Officer
Ai r F o r c e Experim2ntal Track Branch (Edwards AFB, Calif .)
Ai r Fo rce Eas t e rn Tes t Range
Ai r F o r c e Flight Tes t Center (Edwards AFB, Calif. )
Air F o r c e Logistics Command
Ai r F o r c e Missile Development Center (Holloman AFB, N. Mex. )
Air F o r c e Missile Static Tes t Site (Edwards AFB, Calif. )
AFMTC
AFOAR
AFOSR
AFOTC
AFR
AFRD
AFRM
AFSC
AFSSD
A/G
AG
AGACS
AGANI
AGAP
AGAVE
AGC
AGCS
AGCU
AGE
Ai r Fo rce Missile Tes t Center
A i r Fo rce Office of Aerospace Research
Air F o r c e Office of Scientific Research (Wash- ington, D. C. )
Atlantic F lee t Operational Teletype Circuit
Access function reg is te r
Ai r Fo rce r e sea rch and developm,znt
Advanced flight r e sea rch model Ai r f rame
Air F o r c e Systems Command
Air F o r c e Space Systems Division
Attitude gyro
Automatic ground-to-air communications sys tem
Apollo guidance and navigation information
Attitude gyro acce le rometer package
Automatic gimbaled-antenna vectoring equipment
Aerojet-General Corp. Apollo guidance computer Apollo guidance control Automatic gain control Automatic guidance control
Automatic ground control system
Attitude gyro coupling unit
Aerospace ground equipment Apollo ground equipm ent Apollo guidance equipment
AGGD
AGNCS
AGNE
AGNIS
AGS
AHS
AIAA
AIC
AICBM
AIC Delta
AIDTP
AIG
A11
AIR
AIRCOM
AIRCOMNET
AIROPNET
AIS
AIW
AL
Apollo guidance ground display
Abort guidance and navigation control system
Apollo guidance and navigation equipm?nt
PApollo guidance and navigation industrial support
Abort guidance system Aerospace ground support Apollo guidance subsystem
Ampere hour Attitude hold
Aft heatshield
American Institute of Aeronautics and Astronautics
Analog input commutator
Anti-intercontinental ball ist ic miss i le
Increment of command angle
Apollo Integrated Development Tes t P lan
Inner gimbal angle
Apollo implementing instructions
AiResearch Manufacturing Go.
Aerospace communications complex
Air communications network
Ai r operations network
Ascension Island Station
Atlantic injection window
Aluminum Apolune
ALDC
ALEMS
ALFA
ALLAS
ALIGN
ALLM
ALSD
ALSEP
ALSS
ALSSSP
ALT
AM o r a m
AMAL
AMB
AMC
AME
AMF
AMG
AMMP
AMN
A M 0 0
A M P o r a m p
Automatic load and dr ive control
Apollo LEM s e n s o r s
Air- lubr icated f r e e attitude ( t r a i n e r )
Algebraic logic investigation of the Apollo sy s t em
Alignment
Apollo lunar landing module
Apollo lunar su r face d r i l l
Apollo lunar su r face exper iments package
Apollo logis t ic suppor t sy s t em
Apollo Lunar Surface Scientific Simulation P r o g r a m
Altitude
Ammete r Amplitude modulation
Aviation Medical Accelera t ion Faci l i ty (Navy)
Ambient
A i r Mate r ie l Command
Angle -measur ing equipment
Amer i can Machine and Foundry Co.
Middle gimbal angle
Ad.vanced Manned Missions P r o g r a m
Advance m a t e r i a l notice
Aerospace Medical Operations 0ff.ice
Ampere Amplifie r Automatic m i s s ion p r o g r a m m e r
AMPL
AMPS
AMPTF
AMR
AMRO
AMS
AMW
AMX
ANG
ANL
ANNA
AN0
ANT
ANWG
AOA
AOC Delta
AOD
AOG
AOH
AOMC
AOS
Amplifier
Automatic message processing system
Apollo Mission Planning Task Force
Altitude marking radar Atlantic Missile Range
Atlantic Missile Range Operations
Acoustic measurement system Apollo mission simulator Authority for mater ia l substitution
Angular momentum .wheel
Amplitude modulation t ransmit ter- receiver
Angular
Analog
Army-Navy-NASA-Air Force Satellite
Alpha-nume r i c output module
Antenna Antigua Island
Apollo Navigation Working Group
Angle of attack
Increment of command angle
Apollo Operations Director
Outer gimbal angle
Apollo Operations Handbook
Army Ordnance Missile Command
Acquisition of signal
AOT
A P
APA
APATS
APC
APCHE
APD
APG
API
APK
APLSS
APO
APOP APOTA
APR
APS
APT
APTS
APTT
APU
Alinement optical telescope
Accelerometer package Automation plane Autopilot
Abort programmer assembly
Automatic programmer and tes t system
Automatic phase control
Automatic programmed checkout equipment
Apollo Program Director
Aberdeen Proving Grounds, Md. Air Proving Ground (Eglin AFB, F la . )
Alignment program indicator
Acceleromater package
Auxiliary portable life support system
Apollo Procurern.-.nt Office Apollo P rogram Office Apollo Pro jec t Office Apollo Preflight Operating Procedures Automatic positioning telemetering antenna
Advance parts re lease Anticipated personnel requirements
Accessory power system Ascent pressurization system Ascent propulsion subsystem Auxiliary propulsion system
Auxiliary picture t ransmission
Automatic picture transmission subsystem
Apollo par t task t ra iner
Auxiliary power unit Auxiliary propulsion unit
AQAID
AQL
AIR
AR
ARA
ARC
ARCC
ARD
ARDC
ARGhlA
A/RLA
ARIP
ARIS
ARL
ARPA
ARQ
AKRS
ARRSG
ARS
ARSSG
-10-
Acquisition aid
Acceptable quality level
Atlantic Research Corp.
Acquisition and receive
Attitude reference assembly Auxiliary recovery antenna
A m ~ s Research Center Attitude reference computer
Atlantic Recovery Control Center
Apolla requirements document
Air Research and Developm'ont Command
Army Rocket and Guided Missile Agency
Apollo range instrumented a i rc raf t
Automatic rocket impact predictor
Advanced range instrumentation ship
Acceptable reliability level
Advanced Research Projects Agency
Teletype e r r o r control system, automatic request
Aerospace Rescue acd Recovery Service
Altitude and rendezvous radar stimulus gene r a to r
Air Rescue Service Altimeter and rendezvous sensor Atmosphere revitalization section Atmosphere revitalization system Attitude reference system
Atmospheric Reactants Supply Subsystem Group
ARTOC
AS o r A/S
ASA
ASB
ASC
ASCO
ASCP
ASCS
ASD
ASDE
ASFTS
AS/GPD
AS / GPI
AS I
AS IS
ASK
AS ME
AS0
ASP
ASP0
ASPR
ASSA
-11-
Army Tactical Operations Control
Aerospace Corporation Apollo Saturn As cent stage
Abort sensor assembly
Apollo Support Branch
Ascension Island
Automatic sustainer cutoff
Attitude set control panel
Automatic stabilization and control system
Apollo standard detonator
Airport surface detection equipment
Auxiliary systems function tes t stand
Attitude se t and gimbal position display
Attitude se t and gimbal position indicator
.:lpollo s tanda.rd initiator Augmented system ignition
Abort sensing and implementation system
Amp1.itude shift keying
American Society of Mechanical Engineers
Alternate sequence of operations Apollo Support Office
Apollo Spacecraft P rogram
Apollo Spacecraft Program Office
Armed Services Procurement Regulation
Apollo (Block I) space suit assembly
ASS B
ASS Y
AST
ASTD
ASTIA
ASTKO
AT
ATA
ATCA
AT CE
ATCU
ATDWG
ATL
ATM
ATN
A T 0
ATP
ATR
ATS
Apollo Site Selection Board
Assembly
Apollo systems t ra iner
Advanced Spacecraft Technology Division
Armed Services Technical Information Agency
Astronaut
Acceptance test
Assembly and tes t a r e a
Attitude and translation, control assembly
Ablative thrust chamber engine Attitude and translation control electronics
Attitude translation and control unit
Apollo Test Data Working Group
Advanced Technology Laboratories
.Apollo telescope mount
Attenuate
Apollo Tes t Ope rations
Acceptance tes t package Acceptance t e s t procedure Apollo tes t procedure
Activation task request Apollo tes t request Apollo t e s t requirements Atlantic T racking Range
Angle tracking sensor Atlantic t e s t si te Atlantic tracking ship
ATSE
ATT
ATTS
ATW
AU
AUTO
AUX
AUX ECA
.AVC
AVCO
AVE
AVSE
AWG
A W L
A-X
AZUSA
-13-
Angle tracking sensor equipment
Attenuator Attitude
Automatic telemetry tracking systems
Aerospace Test Wing
Astronomical unit
Automatic
Auxiliary
Auxiliary electronic control assem3ly
Automatic volume control
Aviation Corporation of America
Aerospace vehicle equipment Average
Assistant Vehicle System Engineer
American Wire Gage
Apollo wire l is t
Alternate t ransmit ter units
Tracking system
BAC
SARO
PIA'I'
BATT
BBRC
BCD
BCI
RCN
BCO
BCRT
BDA
BDPAS
RECO
B E P P
BER
B I F
B F
B / F / S
BGS
B/H
BHN
Beech Aircraft Go. Eel1 Aerospace Corp. Bell Aerosystems Co. Bell Aircraft Co.
Barometr ic Barostat
Battery
Battery
Ball Brothers desea rch Corp.
Binary coded decimal
Battery condition indicator
Beacon
Booster cutoff
Binary code range time
Bermuda
Bandpas s
Booster engine cutoff
Best estimate propulsion parameters
Bit e r r o r ra te
Buffer I formatter
Beat frequency oscil lator
Btu per square foot-second
Backup guidance system
Blockhouse
Brinnell hardness number
BIOS
BIT
BL
BLOW
BLRT
B/M
BMAG
BME
BMEWS
BMG
BMTE
BND
BND BR
BNDRY
BOA
BOD
BOSS
B P
BPC
B P F
BPS
BRL
-15-
Biological satellite
Built-in tes t
Bondline
Blower
Hioastronautics Laboratory Research Tool
Benct: maintenance Bill o.f mater ial Buffer /multiplexer
Body -mounteci attitude gyro
Berlcll maintenance equipm cnt
B;;ll!stic IvIi~sile Early Warning System
Body-mounted gyro
Bench maintenance t e s t equipment
Bending
Rending bridge
B~)undary
Broad ocean a rea
Beneficial occupancy date
Bio-b.stronautic Orbiting Space Station
Blood pressure Boilerplate
3oost protective cover
Band pass f i l ter
Bits per second
-3allistic Research Laboratories
BRN
BSD
BSE
BST
BTG
BTE
BTL
BTM
BTME
BT U
BU
BUGS
BULKHD
BUR
BW
BWO
- 16-
Brown-Root-Northrop Go,
Ballistic Systems Division
Booster systems engineer
Brief system tes t
Booster tes t conductor
Bench t e s t equipment
Bell Telephone Laboratories
Booster telemetry monitor Bottom
Bench tes t maintenance equipment
Brit ish thermal unit
B ackup
Backup guidance system
Bulkhead
Backup rate
Band width
Backward-wave oscil lator
CADD
CADDAC
CADFISS
CADPO
GAL o r ca l
CALIB
CAM
CAN
CAPCOM
CAPRI
CAR
CARR
CASTS
CASY
CAT
CATH
CB
CBA
Gable assembly Corrective action
Computation and Data Division
Central analog data distributing system
Computation and data flow integrated subsystem
Communications and data processing office
Calorie Calorimeter
Calibrate
Civil aeronautics manual Computer address mat r ix
Certification analysis network
Capsule communicator Spacecraft communicator
Coded address private radio intercom
Corrective action report
Customer Acceptance Readiness Review
Countdown and status t ransmission system
Computer acquisition system
Computer of average transients
Cathode
Center of buoyancy Circuit breaker
C-band transponder antenna
C- band 3900-6200 m c
CBC
CBT
CBX
CC o r cc
CCA
CCB
CCBD
CCC
Complete blood count
Command buffer t ransmi t te r
C-band transponder
Capsule communicator C a r r i e r channel Command center Command communicator Communication control Control center Control computer Cost control Cubic centimeter
Contract change authorization Control coupler assembly
Change Control Board Configuration Control Board
Configuration Control Board Directive
Command control console Coordinate conversion computer
CCD Central command decoder
CCFT Controlled cur ren t feedback t ransformer
CCGE Cold cathode gauge experiment
CCHS Crew compartment heatshield 4
CCIT International Consultative Committee on Telegraphy and Telephony
CCMor ccm Cubic centimeter
CCMR Countdown checkout maintenance and repa i r
CCN Contract change notice
cco Contract change o rde r Crys ta l controlled oscil lator
C C P
CCPM
CCR
CC&S
CCS
CCSD
CCTV
ccu
CCW
C&D
CDB
CDC
CDCO
CDCU
CDDT
CDF
CDH
Configuration control panel Contract change propos a1
Card controlled preventive maintenance
Configuration change record Configuration control record Crew Compartment Review
Central computer and sequencer
Change control system Computer control system Console communications system
Chrys le r Corp. Space Division
Closed ci rcui t television Controlled- c i rcui t television
Camera control unit Communications c a r r i e r umbilical Communications control unit
Counterclockwise
Controls and displays
Current data bit
Command and data handling console Computer development center Confined detonating charge Control and display cons ole Control Data Corp.
Control display coupling unit optics
Communications digital control unit
Countdown demonstration t e s t
Confined detonating fuse
Constant differential height
CDP
CDR
CDRC
CDRS
C DS
CDU
CDUM
CDUO
C / E
CE
CEB
CED
CEI
CEIPA
C E P
CES
CET
Cabin display panels Central data processor
Command destruct receiver Configuration Design Review Cri t ical Design Review
Computation and Data Reduction Center
Computer data recording system
Controls and displays subsystem
Control data unit Coupling data unit Coupling display unit
Coupling display unit IMU
Coupling display unit optics
Communications /electronics
Circular e r r o r
Contract Engineering Branch
Checkout Engineering Division
Contract end i tem Contractor end i tem
Communications electronics implementation plan amendment
Circular e r r o r of probability Computed ephemeris position
Control e lectr ical section Control electronics system Crew equipment system Crew escape system
Capsule elapsed time Cri t ical environment tes t s
CETEX
C2F2
CFD
CFDN
C F E
C F P
C F T F
CG o r c. g.
CGSS
CHBAB
CHAN
CHE
CHG
CICC
CIF
CIMU
CIR
CIRCUM
CIS
CITE
Committee on Contamination by Ex t r a t e r r e s t r ia1
Crew compartment f i t and function
Cumulative frequency distribution
Cryogenic fluid distribution network
Contractor furnished equipment
Cubic feet pe r minute
Contractor furnished property
Cold Flow Tes t Facil i ty
Center of gravity
Cryogenic gas s torage system
Committee on Hearing, Bioacoustics, and Biomechanics
Channel
Cabin heat exchanger
Change Charge
Central Information Control Center
Central Instrumentation Facil i ty
Component integration mockup
Circle Circuit
Circumferential
Chr i s tmas Island Station Communications and instrumentation system
Controller-integrated t e s t equipment
CK Check
CKT Circuit
CL o r C / L Centerl ine Closed loop Closure
CLC Conversion a.nd l imit check module
CLM Core logic module
CLMT Closed loop maneuver table
CLT
CMC
CMD
CMO
CM/SM
CMU
CN
CNI
CNR
CNTR
CNV
Communication line te rmina l Communication line termination
Center of m a s s Circularization maneuver (coelliptic) Command module Contract modification
Command module computer
Command
Configuration Management Office Contingency mode of ope ration
Command and serv ice modules
Compatibility mockup
Change notice Command number
Grand Canary Island
Carboxy-nitroso rubber
Center
Cape Kennedy, Fla. Carnarvon
Checkout
C02
C OAS
COAX
COB1
COBRA
COED
COFW
COGS
COLIDAR
COMB
COMM
COMP
COMPEN
COMPMR
COMPR
COMPT
COMSAT
CON
COND
Change o rde r Checkout Coder output Contracting officer Crys ta l oscil lator
Carbon dioxide
Crew optical alignment sight
Coaxial
Coded biphas e
Compatible onboard ranging
Computer operated electronic display
Certif ication of flight worthiness
Continuous orbital guidance system
Coherent light detection and ranging
Combination
Communications Commutator
Computer
Compensator
Commander, Pacific Missile Range
Compressor
Compartment
Communications satell i te
Connector
Condenser Conditioner
CONE
CONT
CONTLR
CONUS
COS
COSAR
COTAR
C / P
C P
CPCU
CPDC
CPDS
C P E
C P F F
CPI
CPIF
CPLR
CPM o r cpm
Conical
Continuity Control
Controller
Continental United States
Cosine
Compression scanning a r r a y r ada r
Correla t ion tracking and ranging
Cartes ian to polar converter
Change proposal Circular pitch Circular ly polarized Coldplate Communications processor Control p rogrammer Crew provisions
Commutator programmer control unit
Command processor distr ibutor control
Command processor distr ibutor s torage
Contractor performance evaluation
Cost plus fixed fee
Charac te rs per inch
Cost plus incentive fee
Coupler
Command processor module Cri t ical path method Cycles pe r minute
CPS o r cps
CPSM
CR
CRA
CRC
C R F (D)
CRF (M)
CRISP
CRITICOM
CRIU
CRO
C R P
CRT
CRTI
CRY0
CIS
CS
CSC
CSD
Coldplate sect ion Crew provisions subsystem Cycles pe r second
Clipped process speech modulation
Change recommenda.tion
Change reques t and authorization Control ler requested analysis
Collins Radio Co.
Command review and fo rma t display
Capsule review and format measurements
Cosmic Ray Ionization Spectrograph P r o g r a m
Cr i t i ca l communications
Computer r eco rde r in terface unit
Carnarvon, Austra l ia Cathode ray oscil loscope
Certif ication requirement paragraph
Cathode r ay tube
Cathode r ay tuning indicator
Cryogenics
Counts per second
Communication subsystem Crew sys t em
Civil Service Commission Communications sy s t ems cen te r Control sect ion coupler Cosecant computing ampli f ier
Computer Systems Director Crew Systems Division
CSDV
CSI
CSM
CSQ
CSR
CSS
Combined Systems Dynamic Verification Control Subsystem Development Vehicle
Concentric (coelliptic) sequence initiator
Command and service modules
Coastal Sentry Quebec
Check status reg is te r Control shift regis ter
Clock subsystem Communications stimulus subsystem Computer subsystem Cryogenic storage supply Cryogenic supply system
CST o r c. s . t. Central standard t ime Combined Systems Test
CSTF Control system test facility
CSTU Combined system te s t unit
CSU Combined stimuli unit
CT Command transmit ter
CTA
CTC
CT&DDS
CTE
CTI
CTL
CTN
C T P
Certification test approval Cryogenic tank assembly
Cabin temperature controller
Central timing and data distribution system
Central timing equipment
Central Technology, Inc.
Component tes t laboratory
Canton Island Certification tes t network
Computer tape processor
CTR
CTS
CTT
CTU
CTV
eu
CUE
cu ft
cu f t / s e c
cu in.
CUR
cv
cvc
CVR
C&W
CW
CWE
CWEA
CWG
Certif ication t e s t requirements Counter
Central timing system Countdown t ransmiss ion subsystem
Card-to-tape tape
Combined tes t unit Compatibility tes t unit Control and tes t unit
Control t es t vehicle
Cubic
Command uplink electronics Communications unit executor
Cubic foot
Cubic feet per second
Cubic inch
Curren t
Chance Vought Check valve
Commercial voice circuits
Change verification record
Caution and warning subsystem
Clockwise Continuous wave
Caution and warning electronics
Caution and warning electronics assembly
Constant wear garment
CY
CYI
- 28-
Calendar y e a r
Grand Canary Island
DAC
DACAPS
DACON
DAE
DA&P
DAP
DARE
DARS
DAS
DB o r db
DBM
DBV
DBW
DC o r dc
DCA
DCAS
DCC
DCIB
Digital to analog Distribution assembly Double amplitude
Digital-to- analog computer Digital-to-analog conver ter Douglas Ai rc ra f t Co.
Data collection and processing sysi;em
Digital to analog converter
Data acquisition equipment
Data acquisition and processing
Digital autopilot
Data automatic reduction equipment
Data acquisition and recording sys.:em
Data acquisition sys tem
De adband Decibels
Decibels r e f e r r ed to 1 milliwatt
Decibels r e f e r r ed to 1 volt
Decibels r e f e r r ed to 1 watt
Differential cor rec t ion Direct cur ren t Displays and controls
Digital command assembly
Data collection and analysis sys tem
Data communication channel Data control channel Design change control
Data communication input buffer
DCM
DCN
DCOS
DCR
DCRF
DCS
DCT
DCU
DCV
DDA
DDAS
DDB
DDC
DDP
DDR
DDRE
DDT
DDTE
DE
DECA
Destruct command
Drawing change notice
Data communication output selector
Design certification review Digital clock receiver
Drawing cancellation replacement form
Digital command system
Digital clock t ransmit ter
Data control unit Digital control unit Display and control unit
Direct current voltage
Digit a1 differential analyzer
Digital data acquisition system
Digital display boards
Direct data channel Direct data connection
Digital data processing
Design drawing requirement Direct data receiver
Director of Defense Research and Engineering
Digital data t ransceiver Doppler data t rans la ter
Digital data terminal equipment
Deflection e r r o r Descent engine
Descent engine control assembly
DECP
DECR
DEDA
de g
deg C
deg F
deg / s
DEI
DELTA
DELVY
DEM
DEMOD
D E P
DEPL
DET
DETP
DEU
DEV
DEW
Dewar
DF
Descent engine cutoff probe
Decrease
Data en t ry and display assembly
Degree
Degrees centigrade
Degrees Fahrenhei t
Degrees pe r second
Design Engineering Inspection Development engineering information
Detailed labor and t ime analysis
Delivery
Development engineering module
Demodulate Demodulator
Deflection e r r o r probability
Deploy
Detector Digital event t i m e r
Design evaluation t e s t p rogram
Digital evaluation unit
Design evaluation- -vehicle Deviation
Distant ea r ly warning
Ai r r e s e a r c h facility tank
Deadface Direction finding
DFI
DFR
DFS
DFT
DGS
DGU
DG Z
DIFF
DIG
DIPS
DIRAM
DIS
DISC R
DIS P
DIS T B
DISTRAM
DITMCO
DIT U
DLT
DMC
DME
DM0
DMP
Development flight instrumentation
Deadface re lay
Dynamic flight s imulator
Design Feasibil i ty Tes t s
Data ground stat ion
Display generator unit
Desired ground ze ro
Differential
Digital
Dual impact prediction sys tem
Digital ranging machines
Data input subsystem
Discr iminator
Display
Distribution
Digital space t ra jec tory measurement sys tem
Drive In Theater Movie Co. (inspection p roces s ) T rademark fo r continuity t e s t s e t s
Digital in terface t e s t unit
Design lab t e s t
Differential midcourse correct ion
Digital measur ing equipment
Digital multiplexer output
Des i red mean point of impact
DMS
DMT
DO
DOD
DOETS
DOF
DOPLOC
DOVAP
DP
DPC
DPDM
DPG
DPS
DPT
DQM
DR
DR B
DRE
DRED
DRG
DRI
Desired minutes, seconds
Detailed maneuver table
Digital multiplexer output
Department of Defense
Dual object e lect ronic tracking sys tem
Degrees of f reedom
Doppler phased lock
Doppler velocity and position
Differential p r e s s u r e Dimetral pitch Double pole
Data processing center
Differential pulse duration modulation
Dynamic program generator
Descent propulsion sys tem
Design Proof Tes t s
Data quality monitor
Data rece iver Decoder rece iver Discrepancy record Drive
Data Review Board
Data reduction equipment
Data rou te r and e r r o r detector
Drogue
Data r a t e indicator
DRM
DRMCE
DRPF
DRS
DRUL
D/S o r DS
DSB
DSC
DSCP
DSE
DSEA
DSF
DS I F
DS IS
DSKY
DSN
DSS
DS U
D / T
DT
DTCS
D/TTC
Design reference mission
Design reference mission consumables expended
Data reduction and processing facility
Downrange ship Downrange stations
Downrange uplink
Descent stage (LM) Displays subsystem
Double sideband
Dynamic standby computer
Dynamic standby communication processor
Data storage equipment
Data storage equipment assembly
Design feasibility tes t
Deep Space Instrumentation Facility
Deep space instrumentation system
Display and keyboard
Deep Space Network
Deep space station
Data select unit
Dump telemetry
Development tes t Differential temperature
Digital tes t command system
Digital-to-teletype converter
DTE
D T P
DT U
DV
DVD
DVM
DVO
DVR
DVT
DVU
Data t ransmiss ion equipment
Detailed t e s t plan Development t e s t procedures
Digital timing unit
Delta velocity
Delta velocity display
Digital vol tmeter
Delta velocity on-off
Dr iver
Design Verification Tes t Development verif ication test ing
Delta velocity ullage Design verif ication unit.
Elevation angle
EAFB
EAR
EBW
EC
ECA
ECA D
ECA P
ECA R
ECA T
ECA X
ECA Y
ECD
ECDU
EGG
ECM
ECN
EGO
E C P
Electronics assembly Erectable antenna
Edwards Air Force Base
Engineering action request Engineering analysis report
Exploding bridge wire Explosive bridge wire
Engineering Change
Electronic control assembly
Electronic control assembly display
Electronic control assembly pitch
Electronic control assembly roll
Electronic control assembly thrust
Electronic control assembly auxiliary
Electronic control assembly yaw
Entry corr idor display Estimated completion date Expected completion date
Electronic coupling display unit
Electrocardiogram
Electronic counter measures
Engineering change notice
Engine combustion Engine cutoff Engineering change o rde r
Engineering change proposal
ECPY
ECS
ECTRC
ECTRS
ECU
E DA
EDDF
EDL
EDM
EDP
EDPM
EDR
EDS
e. d. t.
EECS
EED
EEG
EEI
EEM
EET
Electronic control assembly pitch yaw
Environmental control subsystem
Elapsed capsule t ime for retrof i re (computer)
Elapsed capsule t ime for retrof i re (capsule clock)
Electr ical conversion unit Environmental control unit
Engineering design acceptance
E r r o r detection decision feedback
Engineering Development Laboratory
Electr ical discharge machinery
Electronic data processing Experiment development plan
Electronic data processing machine
Equivalent direction radiation
Emergency detection subsystem
Eas tern daylight t ime
Earth environmental compensation system
Electronic explosive device
Electroencephelogram Electroencephelograph Electroencephelography
Electrical-electronic interface
Earth entry module External environmental monitoring
End to end tes t Equivalent exposure t ime
E F L
EFRC
EFSSS
EGADS
EGT
EGTR
EHF
E IA
ELAT
EJS
EKG
E L
ELECT
ELEU
ELINT
E LS
ELSC
ELSSE
EMC
EMD
EMER
Effective focal length
Edwards Flight Research Center
Engine failure sensing and shutdown system
Electronic ground a r m destruct system
Elapsed ground time Estimated ground time Exhaust gas temperature
Eglin Gulf Tes t Range
Extremely high frequency
Electron Industries, As sociation
End item acceptance tests
Engineering job sheet
Electrocardiogram
Electroluminescent
Electronic
Eleuthera
Electromagnetic intelligence
Ear th landing subsystem
Earth landing sequence controller
Electronic sky sc reen equipment
Engineering model Escape motor Experimental model
Electromagnetic compatibility
Entry monitor display
Emergency
EMERG
EMF
EMG
EM1
EMP
EMQ
EMR
EMS
EMTE
EMU
ENC
ENG
EN1
ENT
EO
EOB
EOG
EOM
EOR
EOS
EOW
E P
Emergency
Electromotive force
Electromyograph
Electromagnetic interference
Electromagnetic pulse
Engineering m ode1 qualification
Electromagnetic research Engine mixture ratio Engineering malfunction report
Entry monitor system
Electromagnetic tes t environment
Extravehicular mobility unit
Encode
Engine
Equivalent noise input
Equivalent noise temperature
Ear th orbit Engineering order
End of block
Electrooculogram
End of message
Earth orbital rendezvous
Emergency oxygen supply Emergency oxygen system
End of word
Eagle -Picher
E & P L
EPO
EPOC
EPOI
EPS
EPSTF
EPT
EQ
e r
ER
ERA
ERD
ERG
ERM
E R P
ERR
ERS
ERU
ESA
ESB
ESICT
ESD
Entry and pos tlanding
Ear th parking orbit
Ear th parking orbit coast
Ear th parking oribt insertion Equal period orbit injection
Electr ical power subsystem
Electr ical power system tes t facility
Environmental proof tes t
Equipment
Ear th equatorial radius
Emergency repres surization
Electronic replaceable as sembly
Equivalent residual dose
Electroretinograph
Earth re turn module Electromagnetic radiation system monitor
Eye reference point
E r r o r
Electromagnetic radiation surveillance system
Earth rate unit
Explosive safe a r m
Electr ical storage battery
Elapsed spacecraft t ime
Electronics system divis'ion
ESE
ESI
ESL
ESM
ESMU
ESPAR
ESR
e . s . t .
ESTF
ESTRC
ESV
E / T o r ET
ETA
ETIC
ETM
ETMWG
ETOC
ETR
ETT
EU
-41 -
Electr ical support equipment
Electronic system integration
Electronics Standards Laboratory
Edible s t ructure mater ial
Electronic systems mockup
Electronic steerable phase a r r a y r ada r
Erythrocyte sedimentation rate
Eas te rn standard t ime
Electronic systems tes t facility
Elapsed spacecraft t ime of retrof i re computed
Earth satellite vehicle
Elapsed time Encoder t ransmit ter Escape tower
Estimated t ime of acquisition Estimated t ime of a r r iva l
Estimated t ime in commission
Electronic tes t model
Electronic Trajectory Measurements Working Group
Estimated t ime of correction
Eas te rn Tes t Range
Estimated t ime of t rack
Electronic unit
Extravehicular
EVA
EVAP
EVG
EVCT
EVDE
EVSS
EVSTC
EVTD
EXCHR
EXCIT
EXT
EXTRADOP
Extravehicular activity Extravehicular assembly Extravehicular astronaut
Evaporator
Equivalent voice circuit Extravehicular communications
Extravehicular crew t ransfer
External visual display equipment
Extravehicular space suit
Extravehicular suit telemetry and communications
Extravehicular t ransfer device
Exchanger
Excitation
External
Extended-range doppler velocity and position
FA
FAA
FACI
FACT
FAD
FADT
FAE
FAF
FAIR
FAR
FARADAY
FAT
FATS
F /C o r FC
FCA
FCDAR
FCH
FCI
FCOD
FCSD
FCOV
Fai lure analysis
Fede ra l Aviation Agency
F i r s t Article Configuration Inspection
Flexible automatic circuit t es te r Flight acceptance composite tes t
F i r s t art icle demonstrations
F i r s t art icle demonstration test
Final approach equipment
Flight Acceleration Facility
Fabrication assembly and inspection record
Fai lure analysis report
Fa i lure rate data exchange program
Flight attitude table
Flight attitude table system
F e r r i t e core Flight control Fuel cell
Frequency control and analysis Fuel cell assembly
Flight control data acquisition requirements
Flight controllers handbook
Flight control integration
Flight Crew Operations Directorate Flight Crew Ope rations Division
Flight Crew Support Division
Facili ty checkout vehicle
FCS
FCSD
FCSG
FCSM
FCST
FCT
FCTS
F D
F DAI
FDBK
F DI
FDME
FDO
F D P
FDRI
FDS
FDSS
FDT
FEA
FEAT
F E B
F E P
F /F or FF
Flight controls subsystem
Flight Crew Support Division
Flight Control Sensor Group
Flight combustion stability monitor
Federa l Council for Science and Technology
Flight crew t ra iner Flow control thermostat
Flight crew t ra iner simulator
Flight Director
Flight Director Attitude Indicator
Feedback
Flight director instrument
Fir ing data multiplexing equipment
Flight Dynamics Officer
Flight development program
Flight Director Rate Indicator
Fluid distribution system
Flight dynamics support staff
Ful l duplex teletype circuit
Fai lure effect analysis
F o r m a l engineering acceptance tes t
Forward equipment bay
Flight evaluation panel
Flip-flop Florida facility
FHS
FIDO (FDO)
FIT
FITH
FLAC
FLC
FLCU
FLEX
FLSC
F L T
FM
FMES
FMIC
FMS
FMX
F / O
F O
FOD
FORTRAN
FOV
Forward heatshield
Flight Dynamics Officer
Fabrication integration and tes t Fault isolation tes t s
F i r e in the hole
Flor ida Automatic Computer
Flight line camera
Fuel loading control unit
Flexible
Flexible l inear shaped charge
Flight
Flight model Frequency modulation
Frequency modulated continuous wave
Ful l mission engineering simulator
Frequency monitoring and interference control
Frequency measurement se t
F M transmit ter
Fuel to oxidizer ratio
Field Office Florida Ope rations
Flight Operations Directorate
Formula translation
Field of vision
FPAR
FPIS
FPA
FPR
fps
FPS
F Q
FQR
FQTR
F R
FRACAS
FRC
F R DIS
FREQ
F R F
FRM
F R R
f s
FS
FSC
Flame protection Freezing point
Failed part analysis report
Forward propagation ionospheric sca t te r t ransceiver
Fixed, ground, special purpose ( r ada r )
Fixed performance reserve
Fee t per second
Flight propulsion system F r a m e s per second
Flight qualification
Flight qualification recorder
Flight qualification tape recorder
F r a m e
Fai lure reporting analysis and corrective action sys tem
Flight Research Center
Flight r e sea rch and development instrumentation system
Frequency
Flight re adines s firing
F r a m e
Flight Readiness Review
Full scale
Flight simulator
Frequency shift c a r r i e r
FSD
FSE
FSECO
FSF
FSK
FSN
FSO
FSRB
FSS
FSTV
f t
F T
FTA
FTCU
F T E
ft-lb
FTM
f t /min
FTNG
F T P
Flight Sys tems Division Frequency sensitive demodulator
Factory support equipment Field support equipment
F i r s t stage engine cutoff
Flight sequence firing
Frequency shift-keyed
Federa l stock number
Flight Safety Office
Flight Safety Review Board
F i r s t stage separation
Full- scale tes t vehicle
Foot, feet
Fai lure tes t Functional tes t
Flight tes t ar t ic le Flight t e s t assistant
Fuel t ransfer and conditioning unit
Factory test equipment
Foot-pound
Final tes t method Flight tes t manned Flight tes t module
Fee t per minute
Fitting
Field test procedure Functional tes t procedure
FTS
f t / t n
FTU
FUNCT
FVV
FWD
F Y
- 48 -
Fee t per second
Fee t per second per second Fee t per second squared
Functional tes t specification
Flight tes t unmanned
Functional
Facili ty verification vehicle
Forward
Fisca l year
G o r g
G/A
GA
GAC
GAEC
G/A-/GR
gal
GAPL
GASTA
GAT
GATP
GATV
GBI
GBR
G&C
GCA
Gravity
Ground- a i r
Gyro assembly
Gemini- Apollo compiler
Grumman Aircraft Engineering Corp.
Ground- a i r - ground
Gallon
Ground assembly parts l is t
Gimbal angle sequencing transformation assembly
Greenwich apparent t ime Ground-to-air t ransmit ter
Ground article tes t procedure
Gemini Agena Target Vehicle
Grand Bahama Island
Radio station, Rugby, England
Guidance and control Guidance and control subsystem
Guidance and Control Division
Gigacycles
Gimbal case Ground command Guidance and control
Ground control approach Guidance coupler assembly
GCC
GCD
GCI
GCS
GCTS
GCU
GDAA
GDC
GDF
GDMT
GDOP
GE
GECS
GEEIA
GEN
GET
GETS
GFAE
Gemini Control Center (NASA) Global Control Center (IBM)
Maneuver ground coverage display
Gemini configuration index Ground- control interception
Guidance and control subsystem
Ground communications tracking systems
Guidance coupler unit Gyro coupling unit
General Dynamics /Astronautics Gimbal drive actuator
Gimbal drive actuator assembly
General Dynamics /Convair Ground digital control Gyro display coupler
Gas dynamics facility
Gemini detailed maneuver table
Geometric dilution of precision
General Electr ic Co.
Gimbaled engine control system
Ground electronics engineering ins tallation agency
Generator
Ground elapsed time
Gimbaled engine t r i m system Ground-elapsed-time synchronization Ground equipment t e s t se t
Government furnished aerospace equipment
-51-
GFE Government furnished equipment
G F P Government furnished property
GGC Geocentric gravitational constant
GGCS Generalized guidance and control system
Gha Greenwich hour angle
GHe Gaseous helium
G LA
GICS
GIMB
GISP
GLDS
GLOTRAC
GLV
GLVWG
GMBL
GMCF
G-M C-T
GME
GMP
GMRD
Government inspection agencies
Global instrumentation control system (IBM) Ground instrumentation and communication system
Gimbal
Ground instrumentation support plan
Gemini launch data system
Global tracking
Gemini launch vehicle
Gemini Launch Vehicle Working Group
Gimbal
Guided Mis sile Control Facility
Geiger-Mueller counter-tube
Gimbal mounted electronics
Gemini Management Panel
Guided Missile Range Division
GMS Gemini mission simulator
GMT o r G. m . t. Greenwich mean time
GMTCT Greenwich mean time contingency time
GMTDM
GMTEL
GMTEO
GMTIA
GMTIR
GMTLC
GMTLO
GMTLR
GMTMB
GMTMC
GMTMI
GMTMO
GMTMV
GMTOI
GMTOM
GMTOCVE
GMTPC
GMTPD
GMTRBOPC
GMTRC
GMTRE
GMTRF
Greenwich mean time descent maneuver
Greenwich mean t ime ear th landing
Greenwich mean time end of orbit
Greenwich mean time initiate orbit
Greenwich mean time initiate rol l for reentry
Greenwich mean time landing, computed
Greenwich mean t ime launch opportunity Greenwich mean time liftoff
Greenwich mean time lunar rendzvous
Greenwich mean time moon blackout
Greenwich mean time midcourse correction
Greenwich mean time manual insertion
Greenwich mean time maneuver into orbit
Greenwich mean time minimum velocity
Greenwich mean t ime orbital insertion
Greenwich mean time orbit modification
Greenwich mean time optical capture volume entry
Greenwich mean time plane change Greenwich mean time propulsion completion
Greenwich mean time parachute deployment
Greenwich mean time retrof i re based on present capsule
Greenwich mean time retrof i re computed
Greenwich mean time reentry
Greenwich mean time reliable fix
GMTS
GMTTI
GMTTM
GMTU
GMTVA
G&N
GN2
GNC
GNCS
GND
GNE
G&NS
GOE
GOM
GORP
GOSS
G OX
GPD
GPE
GPI
Greenwich mean time setting
Greenwich mean time t ransearth injection Greenwich mean time translunar injection
Greenwich mean time initiating f i r s t terminal mane uve r
Greenwich mean time upper liftoff t ime
Greenwich mean time vehicle acquisition
Guidance and navigation subsystem
Gaseous nitrogen
Guidance and navigation computer
Guidance,navigation and control subsystem
Ground
Guidance and navigation electronics
Guidance and navigation subs ysterrl
Ground operational equipment
Government owned mater ial
Ground Operation Requirements Plan
Ground Operational Support Specification Ground operational support system
Gaseous oxygen
Gimbal position display GOSS Program Directorate
Government procured equipment
General Precision, Inc. General purpose inverter Gimbal position indicator
G P L
gPm
GPO
GPPB
g P s
GPT
GPX
GQT
GRTS
GRU
GSA
GSCS
GSDS
GSED
GSFC
GSP
GSPO
GSR
GSS
GSSC
GST
General Precis ion Laboratories
Gallons per minute
Gemini P rogram Office
Gemini Program Planning Board
Gallons per second
Gimbal position transducer
Gimbal position transducer
Ground qualification tes t
Goddard real-t ime system
Gyro reference unit
Government Services Administration
Ground- space communications system
Goldstone duplicate standard
Ground support equipment
Ground System Engineering Division
Goddard Space Flight Center
Guidance signal processor
Gemini Spacecraft Program Office Ground Systems Project Office
Galvanic skin response
Gemini support si te Ground support system
Ground support simulation computer
Greenwich s idereal time
GTA
G T F
GTI
GTK
GTM
GTN
GTRS
GTV
GUS
GYM
GYRO
-55-
Gemini Ti tan Agena
Government t e s t facility
Grand Tu rk Island
Grand Tu rk Island
Ground t e s t module
Global t racking network
Ground t ime remaining until retro::^ire set t ing is reached
Ground t e s t vehicle
Gus s e t
Guaymas, Mexico
Gyroscope
h a
HA
H-A
HAA
HAG
HADC
HAFB
HAPR
HATS
HBU
HBW
HD
HDAC
HDPR
He
HEA
H F
H F P
HERA
HFX
H g
HG
Hydrogen
Apogee altitude
Harne s s assembly
Hazardous a r e a
High altitude abor t
Hughes Ai rc ra f t Company
Holloman A i r Development Center
Holloman A i r F o r c e Base
Heavyweight ascen t propulsion r i g
High altitude t e s t s tand
Helium booster unit
Hot br idgewire
He ad
Helium distr ibution assembly control ler
Heavyweight descent propulsion r i g
Helium
Heat exchange assembly
High f requency ( 3 - 30 mg)
Hybrid flight plan
High f requency recovery antenna
High frequency t r an sce ive r
Mercu ry
High gain
HGA
HGB
HI
HIG
H L
HNYCMB
H2°
HOFCO
HORIZ
HOSC
h p
HPDA
HR
HR-1
HRA
HRSU
HRT
HR Z
H / S
HSC
High- ga ln antenna
Hemoglobin
High
Hermet ica l ly s e a l e d i n t e g r a ~ i n g gyro
Heel line High level
Honeycomb
Wate r
Hor izonta l functional checkout
Hor izonta l
Huntsvil le Opera t ions Support Cen te r
P e r i g e e altitude
Helium p r e s s u r e d is t r ibut ion a s s e m b l y
Hour Hydrogen rel ief
Heavywright r eac t ion con t ro l s u b s y s t e m r i g
High f requency r e c o v e r y antenna
Helium r e a d y s t o r a g e unit
High r r~so lu t ions t r ack ing
Hor izonta l
H a m i l t v i ~ St <;lxdard Heatshie ld
Heatshie ld T-Iigh speed
House s p a c e c r a f t
HSD
HT
HTCU
HTR
HTS
HTV
HW
Hz
Hamilton Standard Division High speed data
Helium t r ans fe r and conditioning unit
He ate r
Heat T rans fe r Section
U.S.S. Huntsville
Hot wi re
Hertz (cycles per second)
I A
IAA
IA M
IBM
IB R
I& C
I C
ICA
ICBM
IC C
ICD
ICDU
ICE
ICG
IC P
ICS
ICTC
ICTE
ICTV
IC W
IDEP
IDT S
I n i ~ l t axis
International Aerospace Abs t rac t s
International As sociat ion of Machinists Union
International Business Machines
Inspection Board Review
Instal lat ion and checkout
In tercom
Ins t rument controlled approach
Intercontinental ball is t ic m i s s i l e
Instrumentation control cen te r
Instrumentation control drawing Interface control document Interface control drawing
Iner t i a l coupling data unit
Introspective checkout equipment
Inflight covera l l ga rment
Integrated checkout plan
Internal communication sy s t em
Iner t i a l component t empe ra tu r e con t ro l l e r
Ine r t i a l component t e s t equipment
Ins t rumented cyl indr ical t e s t vehicle
In terrupted continuous wave
Inte r s e rv i ce data exchange prograrn
Ins t rumentat ion da ta t r an smi s s ion sy s t em
IDU
IECO
IEI
IEM
IES
IESD
I F
IFA
I F C
IFHG
I F LOT
IFLTT
IFMA
I F N
IFPMS
I F T
IFT&M
IFTS
IG
IGACE
IG M
Indicator dr iver unit
Inboard engine cutoff
Intermediate engineering inspection
Internal environment monitoring
Internal environmental simulator
Instrumentation Electronic Systems Division
Intermediate frequency
Inflight analysis
Inflight comparator
Inflight high- gain
Intermediate focal length optical t racker
Intermediate focal length tracking telescope
Inflight monitoring assembly
Inflight maintenance
Inflight performance monitoring system
Inflight tes t
Inflight tes t and maintenance
Inflight tes t system
Inner gimbal Integrating gyroscope
Inner gimbal angle Inne r gimbal axis
Integrated ground automatic checkout equipment
Ite rative guidance mode
IG N
IGN8rC
IGOR
IGORTT
IG S
IGSE
IG Y
I IP
I L
ILC
ILCC
ILCCS
IL- MIT
IL-RS
ILS
ILU
IMBLMS
IMCC
IMCCI
IML
IMP
Ignition
Intc g r ated guidance navigation and control
In tercept ground optical r e c o r d e r
Illtcrccpt ground optical r e co rde r t racking te lescope
Incr t i a l guidance sy s t em
Integrated ground suppor t equipment
International Geophysical Year
Instantaneous impact point
Instrumentation Laboratory (MIT)
Inte rnatioilal Latex Corporat ion
Integrated l a ~ n c h control and chccli.out
Integrated launch control and checkout sy s t em
Ins t rumentat ion Laboratory-MIT
In te r sys tem link of remote stat ion
Ins t rument landing sy s t em
Incoming line unit
Integrated medical and behavioral l abo ra to ry 'measu re - ment sy s t em
Integrated Miss ion Control Center
Integrated Miss ion Control Center implementation
Ins t rumentat ion measu remen t l i s t
Impinge Impulse Interplanetary monitoring platform Interplanetary monitoring probe
IMPED
IMPS
IMU
IN o r in
INBD
INCR
IND
INDIC
INFAC
INFO
INJ
in / lb
IN- PH
in / sec
INS
INST
INSTR
INSUL
INT
Impedance
Interplanetary measurement probes ( J P L )
Inertial measurement unit
Inch Inlet Inner Input
Inboard
Increase
Indicator
Indicator
Interface
Information
Inches of water
Inch per inch
Injector
Inch Ipound
Inches per second
Inertial navigation system Insertion
Instrument
Instrumentation
Insulation
Interior Inte rnal
INTERCOM
INTERCON
INTMED
INV
I / 0
I 0
IOC
IOCS
10s
IP
IPA
I P B
IPS
IRA
IRACQ
IR BM
IRFNA
IR G
Intercommunication
Interconnect
In termediate
Inver te r
Input / output
Indust r ia l operat ions
Initial ope ra t ional capabil i ty
Input /output control sy s t em
Indian Ocean Ship ( t racking)
Impact point Impact p red ic to r
In termediate power ampl i f ier
I l luminated push button I l lus t ra ted pa r t s book
Inches p e r second Ins t rumentat ion power subsys tem Ins t rumentat ion power supply
Information reques t In f ra red
Ins t rumented recovery a i r c r a f t
Ins t rumentat ion r a d a r and acquisi t ion panel
In termediate range bal l i s t ic m i s s i l e
Inhibited r e d fuming n i t r i c ac id
Ins t rumentat ion Requirements Group
IR N
IR P
IR U
IS
IS B
IS C
ISCD
ISCMC
ISD
IS E
IS1
ISLGC
IS 0
ISOL
I S P
ISS
ISTP
ITA
IT F
IT I
Inertial ra te integrating gyro Inertial ra te integrating gyro (MIT) Inertial reference integrating gyro Interrange instrumentation group
Interface revision notices
Inertial reference package
Inertial reference unit
Instrumentation subsystem
Independent sideband
Industrial support contractor
Interface specification control document
Interpretively simulated command module computer
Interstage separation disconnect
Industry standard equipment
Instrumentation/support instructions
Interpretively Simulated LM Guidance Computer
Isolation
Isolation
Specific impulse
Inertial subsystem Input subs ys tem
Instrumentation system tes t procedure
Integrated test a r e a
Integrated tes t facility
Inspection and tes t instructions Inspection test instructions
IT MG
IT OR
IT P
IT Q
ITS
IU
IUA
IW
-65-
In tegrated t h e r m a l meteoroid garment
In tercept t a rge t optical r e co rde r
Inspection t e s t procedure
Invitation to Quote
Integrated t r a j e c to ry sy s t em
Ins t rument unit
Ine r t i a l unit a ssembly
Interchangeable with
JAN
JATO
J-CLOT
JETT
JFACT
JIM
J / M
JNSC
JOD
JON
JOP
J P L
JSM
J U P
- 66-
Joint Air Force-Navy
Je t assis ted takeoff
Joint closed-loop operations tes t
Jett ison
Joint Flight Acceptance Composite Test
Job instruction manual
Jett ison motor
Joint Navigation Satellite Committee
Joint occupancy date
Johannesburg, S. A.
Joint operating procedures
Je t Propulsion Laboratory
Jett ison service module
Point Jupiter (Station 2, ETR)
K o r km
KB
KBPS
k b s
k c
K F T
kHz
KIC
K L B o r klb
k m
KMG o r k m c
KNO
KOH
kpps o r K P / S
KPS
KSC
KSR
KTS
kw
Thousand
Kilo bi ts
Kilo b i t s p e r second
Kilobits p e r second
Kilocycles
Kilo fee t
Ki loher tz
Kol lsman Ins t rument Corp.
Kilopounds
Ki lomete r
Kilomegacycle s
Kano, Niger ia
P o t a s s i u m hydroxide
Kilopuls e s p e r second
Kaena Point Station (Hawaii)
Kennedy Space Cen te r
Keyboard send- rece ive unit
Kodiak Track ing Station, Alaska
Kilowatt
LA
LACS
LAD
LAET
LaRC
LARC
LASER
LASV
LAT
lb
lb/ft2
lb /h r
LBR
l b / s
LBVS
LC
LCA
LCC
LCE
LCG
L C 0
LCOC
LCS
Launch azimuth
LEM-Apollo communications system
Los Angeles Division (NAA)
Limiting actual exposure t ime
Langley Research Center
Lighter, amphibious, resupply c a r r i e r
Light amplification through stimulated emission of radiation
Low altitude supersonic vehicle (Air Force)
Latitude
Pounds
Pounds per square feet
Pounds per hour
Low bit rate
Pounds per second
Lower body vascular support
Launch complex
Lighting control assembly
Launch Control Center
Launch complex equipment
Liquid cooled garment
Launch Control Officer
Launch control officer console
Launch control system
LCTT
LCIJ
LCTV
LDEC
LDGE
LDP
LDRS
LDS
LDT
L E
LEA
L E B
IAECS
LEE
LEM
Launch complex t e l eme t ry t r d i l e r
Landing c ra f t , utility Loading control unit
Launch complex t e l eme t ry v a n
Length-diameter ra t io L , i f t over d r a g ra t io
Launch docking events control ler
LEM dummy guidance equipment
Local da t a package
LEMda ta reduction stat ion
Launch data sys tem
Level detector (NAA)
Launch escape
Launch escape assembly
Lower equipment bay
LEM ea r th communications sy s t em
LEM elect ronic equipment
Launch escape motor Lunar excurs ion module
Launch escape pitcli control
Launch escape propulsion sys tem Lunar excurs ion propulsion sy s t em
Lewis Research Center
Launch escape sy s t em
LET
LEV
L F
L F A
LFE
LFU
LGC
LGE
LGP
LH
LH2
LHA
LHCB
LHEB
LHFEB
LIEF
LIN
LiOH
LIQ
LJ 11
LL
Launch escape tower
Launch escape vehicle
Low frequency
LEM Form A
Laboratory for Electronics
Lunar flying unit
LEM guidance computer Lunar module guidance computer
LEM guidance equipment Lunar geological equipment
LEM ground points
Left hand
Liquid hydrogen
Local hour angle
Left-handed circular polarization
Left-hand equipment bay
Left-hand forward equipment bay
Launch information exchange facility
Linear
Lithium hydroxide
Liquid
Little Joe I1
Lincoln Laboratory (MIT) Low level Lunar landing
LLM
LLO
L L P M
L L R F
LLRV
L LS
LLSV
LLT
LLTV
LLV
LM
LMCS
LME
LMK
L M P
LMS
LMSC
LMT
L, 0.
LO
Lunar landing mi s s ion Lunar landing module
LEM layout
Lunar landing propulsion mod.ule
Luna r Landing Resea r ch Faci l i ty (LaRC)
Lunar landing r e s e a r c h vehicle
Lunar landing s i t e Lunar logist ic sys tem
Lunar logist ic sy s t em vehicle
Lunar landing t r an s f e r
Lunar landing training vehicle
Lunar logis t ics vehicle
Land m a r k Lunar module
LEM-man communications sy s t em
Launch moni tor equipment
Landmark
LEM Miss ion P r o g r a m m e r
LEM miss ion s imula to r Lunar miss ion s imulator
Lockheed Miss i l es and Space Co.
Local mean t ime
Liftoff
Launch ope rat ions Liftoff Low Lunar o rb i t
LO2
LOA
LOB
LOC
LOCC
LOCPS
LOD
LOFAR
LOG
LO1
LONG
LONGL
L O P 0
LOR
LORAC
LORAN
LORS
LOS
LOTS
LOTV
LOX
Supe rcr i t ica l oxygen
Lunar orbital assembly
Launch Operations Building Line of balance
Launch Operations Center Location Lunar orbit coast
Launch operations control center
Lunar orbit coast pre-separation
Launch Operations Directorate
Low-frequency acquisition and ranging
Logic
Lunar orbit injection Lunar orbit insertion
Longeron
Longitudinal
Lunar Orbiter Project Office
Lunar orbit rendezvous
Long range accuracy
Long rate navigation
LM optical rendezvous system
Line of sight Loss of signal
Launch optical t ra jectory system
Landing ope rations test vehicle
Liquid oxygen
L P
LPA
LPD
LPFA
LPGE
LPH
LPO
LPR
LR
LRA
LRC
LRL
LRRR
LS
LSB
LSC
LSD
LSE
LSEA
LSEP
LSF
LSM
Low p res su re
Log periodic antenna
Landing point designation
LEM prel iminary form A
LEM part ia l guidance equipment
Landing platform, helicopter
Lunar parking orbi t
Liquid propellant rocket
Landing radar Lunar rendezvous
LEM replaceable assemblies
Langley Research Center
Lunar Receiving Laboratory
L a s e r ranging re t ro- re f lec tor
Landing system Life systems
Least significant bit Lowe r sideband
Linear- shaped charge
Low speed data
Launch sequencer equipment
Lunar surface erectable antenna
Lunar surface experiment package
Launch support facility
Lunar surface magnetometer
LSO
LSP
LSR
LSRL
LSS
LSS C
LSSM
LST
LSTU
LSV
LTA
LTDS
LTM
LTR
LTS
LTV
LTW
LUCOM
LU LS
LUM
LUT
LV
Lunar surface operations
LM specification
Lunar surface rendezvous
Lunar Sampling Receiving Laboratory
Life support system
LM separation sequence controller
Lunar scientific survey module
Local s idereal t ime Lunar surface technology
LEM special tes t unit
Lunar surface vehicle
LEM test art icle
Launch t rajectory data system
Life tes t model
Liquid t e s t rig
Launch telemetry system Launch tracking station Liftoff t ransmission subsystem
Ling- Temco-Vought
Launch time window
Lunar communications system
Lunar logistic system
Living utility module
Launch umbilical tower
Launch vehicle Life vest Lift vector
LVC
LVCCS
LVDA
LVDC
LVOD
LVSE
LVTR
L W
LWD
- 7 5 -
L E M vendor change
Launch vehicle command and communications system
Launch vehicle data adapter
Launch vehicle digital computer
Launch vehicles operation division
Launch vehicle systems engineer
Landing vehicle, tracked, reconnaissance
Launch window
Launch window display
hl r\ C;
M A C
MA 14's PO
hl A Il?
MAMP
b1AN
MANDY
MANIF
M A P
RTAK
MARS
MASER
MASTIF
MAT
MATS
MATTS
MAX
MAX Q
MAY
hlTS'l'J<AM <~u? t i l i a ry clic~ckout ltit
I\.l,tlin~-cl Spact. la'liglit Support P r o j e c t Office
Mal l t~fac turc . r ' s assc t rnbly anti inspect ion r e c o r d
KSC '1'M b. 'I'racliing Faci l i ty
Manifold
Mtls s a g e ac-c~tptancc: pulse
M a r t i n automat ic r cpor t ing s y s t e m Milit .ary advancc range ship
Micro-wave amplif icat ion through s t imula ted e m i s s i o n of radia t ion
Mult i- axis sp in t c s t i n e r t i a l faci l i ty
Minimum a i rwor th iness t e s t Mobile a r m i n g tower Mi l i t a ry A i r T r a n s p o r t Se rv ice
Multiple a i r b o r n e t a r g e t t r a j e c t o r y s y s t e m
Maximum
Maximum dynamic p r e s s u r e
Mayaguana
MBCS
MC o r m c
MCA
MCC
MCCDU
MCCDUO
MCC-H
MCC-K
MCOP
M C P
MCR
MCS
MCW
MD
MDA
MDAS
MDC
MDCS
MDE
MDF
Man back-pack communications sy s t em
Megacycles
Main console assembly
Miss ion Control Center Midcourse cor rec t ions
Manual control coupling display un:~t
Manual control coupling display unit optics
Miss ion Control Center , Houston
Miss ion Control Center , Kennedy
Miss ion control operations panel
Mission control p r o g r a m m e r
Manual change reques t
Main c o r e s to rage Memory control subsys tem
Mas t e r caution warning
Message dis t r ibutor
Miss ion display control
Medical da ta acquisi t ion sy s t em
Main display cons ole Miss ion display console Miss ion display control
Mas t e r digital command sy s t em
McDonnell design equipment Monitor display equipment
Main dis t r ibutor f r a m e Mild detonating fuse
MDI
MDIU
MDK
MDR
MDS
MDSS
MDT
MDU
M&DV
MEAR
MEB
MECH
MECO
MED
ME1
MEM
MERU
MES
MESC
MESP
MET
M F
-78-
Miss -distance indicator
Manual data inse r t ion unit
Manual data keyboard
Major des ign review
Malfunction detection sy s t em Mas t e r development schedule
Mis s ion data suppor t sy s t em
Mean down-time
Message d i s t r ibu tor unit
Map and da ta v iewer
Maintenance engineering analys is r e c o r d
Miss ion Engineering Branch
Mechanized
Main engine cutoff
Medium
M a s t e r end i t em
M a r s excurs ion module
Mult i -ear th r a t e unit
Miss ion event sequence
Mas t e r events sequence control ler Miss ion event sequence control ler
Mission event sequence panel
Miss ion e lapsed t ime
Medium frequency
MFD
M F L
MFS
MFSB
MG
MGA
MGE
MGN
MGT
MGZ
mHz
M-H
MHD
MI
MICA
MICS
MIDAS
MIDOT
MIG
MIKE
m i l
MIL
Miss ion Flight Di rec to r
Medium-focal-length t racking te1e:;cope
Magnetic f ield s t rength
Manned Fl ight Surveil lance Board
Middle gimbal
Middle gimbal angle Middle gimbal axis
Maintenance ground equipment
Mercury-Gemini Network
Module ground t e s t
Mayaguez, P u e r t o Rico
MegaHertz
Minneapolis - Honeywell Corp.
Magnetohydrodynamic s
Manual input Moment of i ne r t i a
Multiple incentive contract analys is
Management information and control sy s t em
Miss i l e detection a l a r m sys t em Miss i l e in te rcep t data acquisi t ion sys tem
Multiple i n t e r f e rome te r determinat ion of t r a j e c to r i e s
Miniature integrating gyro
Microphone
Mer i t index list
XIMC
hlhiDB
h l ~ ~ r r i t t Is land L3~11c-li A r e a
hlnl~d;ilory ins pcxction point
hlodulation i~ lduc ing rc,activc' r~. trodirc.ct ive opt ica l systc.111
h las s acllusc.tt s Institt~tc, oi T~:chnology
h1astc.r inst r u ~ n c n t n t l o n t iming ~.quipincnt Missile intc.sration t c r m i n a l equipment
h lassac l lusc~t ts Inst i tute of Technology Ins t rumenta t ion Labora to ry
Maintcnancc kit
hlain landing g e a r
Manned l u n a r landing p ro jec t
hloon landing sequence Moon landing s y s t e m
IvIission l i fe t e s t s hlobile launch tower
Midcourse maneuver h l i l l imete r
Midcourse m e a s u r e m e n t c o r r e c t i o n
Miss ion Modular Data Book
MMH
MMHG
MMI
MMM
MMRBM
MMS
MMU
MNA
MNB
M&O
MO
MOC
MOCP
MOCR
MOD
MODEM
MODS
MOL
MON
MOPAR
MOPS
Monomethylhydrazine
Mil l imeter of m e r c u r y
Mass moments of i ne r t i a
M a r s miss ion module
Mobilc mid- range bal l i s t ic m i s s i l e
McDonnell Ma te r i a l Specification
Midcourse measu remen t unit Module maneuve r ing unit
Main bus A
Main bus B
Maintenance and Operations
Maneuver into orbi t
Mas t e r operational console Mas t e r operat ions control Miss ion operation computer
Miss ion operat ional communication p roce s so r
Miss ion Operations Control Room
Modulation Modulator Module
Modulator /demodulator
Manned orb i t a l development sy s t em
Manned Orbi ta l Labora to ry
Monitor
Mas t e r osci l la tor power ampl i f ier r a d a r
Mil i tary operat ional phone sy s t e m
MOPTARS
MOS
MOSS
MOST
MOT
MOTU
MOW
MPA
MPAD
MPG
MPM
MPS
MPTR
MQF
MR
MRA
MRAD
MRB
MRBM
MRCR
MRD
MR-HR
MRL
Multiple-object phase t racking and ranging sy s t em
Miss i l e on s tand
Manned orb i t a l space sy s t em
Mobile optic survei l lance t r a c k e r
Motor
Mobile optical t racking unit
Miss ion Operations Wing
Meteoroid penetrat ion analys is Miniature pendulum acce l e rome te r
Mis s ion Planning and Analysis Division
Multiple point ground
Maximum propelled miss ion
Miss ion p repara t ion shee t
Mobile position t racking r a d a r
Mobile quarantine facil i ty
Malfunction r epo r t
Ma te r i a l review action
Mil l i radians
Ma te r i a l Review Board
Medium- range ball is t i c m i s s i l e
Measurement requ i rement change reques t
Ma te r i a l Review Disposition
Mill iroentgens p e r hour
Measurement requ i rements l i s t
MRR
MRRCS
MS
MS B
MSC
MSCC
MSCO
MSD
MSE
MSFC
MSFEB
MSFN
MSI
m . s. 1.
MSO
MSOP
MSS
MST
MSTS
MT
MTBF
Ma te r i a l review r epo r t
Ma te r i a l review r e c o r d continuation shee t
Measurement sy s t em Mill iseconds Miss i l e s ta t ions Miss ion sequencer Miss ion s imula to r Motor switch
Most significant bit
Manned Spacecraf t Center
Manned Spaceflight Control Center
Manual su s t a ine r engine cutoff
Most significant digit
Mechanical suppor t equipment
Mar sha l l Space Flight Center
Manned Space Flight Exper iments Board
Manned Space Fl ight Network
Manned sa te l l i te inspector
Mean s e a level
Minesweeper , ocean
Manned Spacecraf t Ope rat ions Building
Miss ion s ta tus s u m m a r y Mobile Serv ice S t ruc tu re
Mobile s e rv i ce tower
Mil i tary s e a t ranspor ta t ion s e rv i ce
Magnetic tape
Mean t ime before fa i lu re
MTBM
MTBMA
M T F
MTM
MTO
M T P
MTPET
MTR
MTS
MTTR
MTU
MTVC
MU
MUC
MUX
m v
MVD
MVDC
Mv/M
MVNS
mw
MXD
Mean-t ime between maintenance
Mean- t ime- between-maintenance actions
Mean t ime t o fa i lure Miss i s s ipp i T e s t Faci l i ty
Mechanical t e s t model
Miss i s s ipp i T e s t Operations
Mas t e r t e s t plan
Miss ion T e s t Planning and Evaluation Team
Mean-time-to- r epa i r Motor
Member - technical staff Miss ion t ra in ing s imula to r
Magnetic tape unit
Manned t h ru s t vec to r control
Mockup
Muchea, Aus t ra l i a
Frequency mult iplex equipment
Millivolt
Map and visual display
Millivolts d i r ec t cu r r en t
Millivolts p e r m e t e r
Multiple vehicle N- s tage
Milliwatt
Multiple t r a n s m i t t e r d is t r ibutor
N
N2
NA
NAA
NACA
NACODE
NADC
NAMTC
NAS
NASA
NASC
NASCOM
NASSSB
NBS
NAV
NB
NBTS
NBWEPS
NC
NCAR
NCR
NCRP
Nitrogen
Nitrogen
Naval A i r
North Amer ican Aviation, Inc.
National Advisory Committee f o r Aeronautics
Naval cor re la t ion detection receiving sy s t em
Naval A i r Development Center
Naval A i r Miss i l e T e s t Center
National a i r c r a f t s tandards
National Aeronautics and Space Adminis t ra t ion
National Aeronautics and Space Council
NASA world-wide communications network
National Academy of Sciences, Space Sciences Board
National Bureau of Standards
Navigation
Narrow band Navigation base
New Boston Tracking Site
Naval Bureau of Weapons
National cou r se Normally closed Nosecone
Nonconformance analys is repor t
Nonconformance r epo r t
National Commit tee on Radiation Pro tec t ion
nd
NDR
NED
ne g
NEIF
NEPD
neut
N&GS
NIS
NIRTS
NLG
nlt
n, m .
NMF
n. mi .
nmt
NO o r no
N2°4
NON-ESS
NORAD
NORM
Nondimensional
Network data reduction
Near ear th data
Negative
Near Earth Instrumentation Facilitv
Noise equivalent power density
Neutral
Navigation and guidance subsystem ( see G&NS)
Noise improvement figure
New integrated range time system
Nose landing gear
Not l e s s then
Nautical mile
National Missile Facility
Nautical mile
Not more than
Nitric oxide Normal open Number
Nitric oxide Normally open
Nitrogen tetroxide
Non-es sential
North American Air Defense Command
Normal
NOTS
NPSH
NRL
NR Z
NRZ-C
NS A
NS C
NSIF
NS L
NSM
NSO
NTCSTS
NV
-87-
Naval 0rd.nance T e s t Station
Not positive suction bead
Naval Resea r ch Laboratory
Non-re turn to z e ro
Non-re turn to z e r o change
National Securi ty Agency
Navigational s t a r catalogue
Near-Space Instrumentation Facil i ty
North r a p Space Labora to ry
Network s ta tus monitor
Normal sequence of operations
Non-time c r i t i c a l s ta tus t r an smi s s ion subsys tem
Northrop Ventura Not valid
Naval weapons plant
OAME
OAMS
OAR
OART
OC
OCC
OCDU
OCF
OCI
OCO
OCP
OCPS
ocv
OD
ODOP
ODU
OECO
O / F
Oxygen
Oxygen
Operational adminis t ra t ion Output axis
Orbi t attitude and maneuvering e lect ronics
Orbit attitude and maneuvering sys tem
Office of Aerospace Research (AFSC)
Office of Advanced Resea r ch and Technology (NASA)
Orbi ta l check Over cu r r en t
Operations control cen te r
Optiqs coupling data unit
Operational control faci l i ty
Operational checkout ins t ruct ion
Ope ra t ion and checkout
Operational checkout procedure
Oxygen and cabin p r e s s u r e control sect ion
Optical capture volume
Operations directi-,re Operations Di rec to r (NASA) Orbi ta l determinat ion
Offset doppler t racking sys tem Off s e t f requency doppler
Output display unit
Outboard engine cutoff
Oxidizer / fue l r a t io (mix ture )
OG
OGA
OGE
OGO
OH
OIF
01s
OL
OLM
OIL-RC
OLU
OM
OMNI
OMSF
OMU
O & P
OPDAR
OPR
OPS
OPT
OPTX
OPWG
OR
-89-
Outer gimbal
Outer gimbal angle
Operational ground equipment
Orbiting Geophysical Observatory
Hydroxyl ion
Ope ration instrumentation facil i ty
Operational instrumentation system
Open loop
On line monitor
Overload- r eve r se cur ren t
Outgoing line unit
Orbit modification
Office of Manned Space Flight (NASA)
Optical measuring unit
Operations and procedures
Optical detection and ranging
Office of p r imary responsibility
Oxygen purge system
Optics
Optics
Ope rational Planning Working Group
Operations requirements Oxygen relief
ORD
ORDEAL
OR1
ORL
OR QA
OR T
osc
OSE
OSO
OSR 3
OSS
OSSA
OSWG
OT
OTCA
OTDA
OTP
OUA
OUT
-, OUTBD
Operational ready date Operations requirement document
Orbital ra te drive electronics fo r Apollo and LM
operat ional readiness inspection
Orbital Research Laboratory
Officc: of Reliability and Quality Assurance
Ope rational readiness t e s t
0 s ci l lator
Operational support equipment
Office of Space Operation Operation Support Office Orbiting Solar Observatory
Operational Support Requirements Office
Office of Space Sciences Optics subsystem Oxygen supply s imulator
Office of Space Science and Applications (NASA)
Optical Systems Working Group
Ope rational t e s t Optical t r acke r
Over s e a s telecommunication commission (Australia)
Office of Tracking and Data Acquisition (NASA)
Operational t e s t procedure
Optical unit as s embly
Outer Outlet Output
Outboard
o / v
O V E R U D
OX
OXID
O\.e rvol tage
OL e r b o a r d
Oxidizer
Ox id ize r
PA- 1
PAA
PAB
PAC
PACCT
PACE
PAD
PADAR
PAFB
PAM
P A 0
PAR
PAT
PATH
P B
PBS
PBX
Pitch
Pad abort Power amplifier Precis ion angle
Prototype Ascent Propulsion Rig
Pan American Airways
Probability of abort
P rogram analyzer cons ole
PERT and Cost Correlation Technique
Precis ion analog computer equipment Prelaunch automatic checkout equipment P rogram automatic checkout equipment
Preflight Assurance Division Pro jec t approval document Propellant actuated device
Pass ive airborne detection and ranging
Pat r ick Air Force Base, Flor ida
P a r t s and mater ials Pulse amplitude modulation
Public Affairs Office
Par i ty
Pa t r ick Air Force Base
Performance and tes t history
Push button
Physiological biomedical system
Private Branch Exchange (telephone)
P C N ' T
!>-CORD
PCS
PCT
PCU
PCVB
PCW
PD- !
PDA
l',, i - t l k 11)aling contractor Pitch control P s o ~ i - a m colltrol
P o l a r cap absorption ' I ( ,cision cleaning agent
~ ' I - o ~ I - ~ I I ~ coupler assembly
P ~ - ~ ~ l i ~ n i n a i - y contract change propos a1
Pitcll control inotor P u l s ~ l code modulation
l'ulse codc: lllodulation event
Pu15~. code modulation and t iming equipment
'? t l lue code inodulation and t iming e lec t ron ic assembly
Rvoccdurc change notices Publicat ion changt: notice
P r ~ ~ l a u n c l ~ Chr ckout and Ope ra t ions Directive
PCjcif ic command ship ?crinanent c l ~ a l ~ g c of s ta t ion ?ortable comi~~un icn t i ons sys tem
P r i o r i t y control unit P r o g r a m control unit
P y r o continuity verif icat ion box
P r ~ l s e d continuous waves
Prototype Descent Propuls ion Rig
P r e c i s i o n d r ive axis P r ede l i ve ry acceptance
Premodulat ion p roces so r -deep space data
PDM
P D P
PDR
PDS
PDV
P E I
P E P
P E P P
PERT
PET
PF
P F M
PFOD
PFRT
PFSL
PGA
PGNCS
PGNS
PGR
PGS
PH
Pulse duration modulation
P rogram Development P lan Programmed data processor
Pre l iminary Design Review
Power distribution section Propellant dispersion system
Premodulation processor--deep space voice
Prel iminary engineering inspection
Peak envelop power
Planetary entry parachute program
Program Evaluation Reporting Technique
Production environmental tes t
Powered flight Pulse frequency
Pulse frequency modulation
Preflight Ope rations Division
Preflight rating tes t s Prel iminary flight rating tes t
Propulsion feed system laboratory
Pendulous gyro accelerometer P r e s s u r e garment assembly
P r i m a r y guidance and navigation control system
P r i m a r y guidance and navigation subsystem (LEM)
Physo-galvanic reaction
Power generator system
Phase
pH
PHO
PHOTOMUL
Pff Y S
P I
PIA
PIAPACS
PICS
PIG
PIGA
P I 0
PIP
PIPA
PIRD
PIR T
PIT
PIT R
PIW
PK
PKG o r pkg
P L
Hydrogen ion concentration
Pllilco Houston Operations
Photomult ipl ier
Phys ica l
P r inc ipa l invest igator
Pre ins ta l l a t ion acceptance Pre launch instal lat ion acceptance
Physiological information, acquisition, p rocess ing , and control sys tem
P r o g r a m informat ion call-up sy s t em
Pendulous integrating gyro
Pendulous integrating gyroscope acce l e rome te r
Public Information Office
Pred ic ted impact point Pu l s e integrating pendulum
Pu l s e integrating pendulum acce l e rome te r
P r e l im ina ry ins t ruct ion requ i rement document P ro j ec t ins t rumentat ion requ i rement document
P r cc i s i on in f ra red tr iangulat ion sy s t em
Pre ins ta l l a t ion t e s t
Post ins ta l la t ion t e s t requirement
Pac i f i c injection window
Peak
Package
P o s tlanding Pre launch
PLBK
PLCA
PLIM
P L O
P L P S
PLSC
PLSS
P M E L
PMM
P M P
PMR
P M R F
PMRR
PMS
PND
PNEUM
PNGS
P N L
Playback
Prope l lan t loading control a ssembly
Post launch and ins t rumentat ion message
Pacif ic Launch Ope ra t ions
Propel lant loading and pressur iza t ion sy s t em
Postlanding sequence control ler
P e r s o n a l l i fe suppor t sy s t em Por tab le l i fe suppor t subsys tem Postlanding surv iva l sy s t em
Phase modulatiorl P o s t me r id i an Product ion model Prototype model Pu l s e nlodulation
P rec i s i on Measur ing Equipment Laboratory
Pu l s e lnode mult iplex
Premodulat ion p roce s so r P r o g r a m Management P lan
Pac i f i c Miss i le Range
Pac i f i c Miss i le Range Facil i ty
P r e -Ma te Readiness Review
Physiological monitoring sy s t ems Power measu remen t s e t
Premodulat ion p roce s so r - - nea r e a r t h data
Pneumograph
P r i m a r y navigation and guidance subsys tem
POISE
POAIS
P O P
PORT
POS o r pos
POT
P P I
PPhI
PPP
P P O
P P S o r pps
P P S L
PQGS
PQV
PR o r p r
Pdrklng orbi t P ~ ~ r c l ~ a s e o r d c r
PI a I I of act ion
Pr t . i l ig l~t Operations Division Prcln1~11c.h Ope rat ions Division
Pant.1 on Inflight Scientific Exper iments Panel on Inflight Space Exper iments
Precision optical measur ing sy s t em
Progralm Operating Plan
Photo-optical recording t r a cke r
Posi t ion Posit ive
P l an position indicator
P a r t s pe r mil l ion Pos t -pa s s mes sage analys is Pu l se pe r minute Pu l se position modulation
Peak pulse power
PACE P ro j ec t Office
P r i m a r y propulsion sy s t em Pu l s e s pe r second
Proven pa r t s and sou rce l i s t
Propel lant quantity gaging sys tem
Product ion qualification verif icat ion
P r e s s u r e rel ief P rocu remen t reques t Pu l se r a t e Pu rchase reques t Pue r to Rico (San Juan)
PRA
PRB
PRD
PRE
PREAMP
PRELORT
PRESS
P R F
PRH
P R I
PRIM
PRISM
PRN
PROG
PROP
PRR
PRSW
P I S
Pendulum reference axis Precess ion reference axis P rogram reader assembly
Panel Review Board
P a s sive ranging dopple r P r e r e t r o update display Program requirements document Pulse rate divider
Pre tor ia , South Africa
Preamplif ier
Precis ion long range tracking radar
P r e s s u r e
Pulse repetition frequency
Program requirements handbook
P r i m a r y
P r i m a r y
P rogram integrated system maintenance
Pseudo-random noise
P rogram
Propellant Proportional
P re t e s t Records Review Pulse repetition rate
P r e s s u r e switch
Para l le l to se r i a l Propulsion subsystem
Power supply P r e s s u r e switch P rocess specification
PSAAM
PSAC
Power and sequencing assembly Power and s e rvo assembly
Power s e rvo assembly adapter module
P re s iden t ' s Science Advisory Committee P re s iden t ' s Scientific Advisory Committee
PSDF Propuls ion sys tems development facility
P S F o r psf Pounds pe r square foot
PSI o r ps i Pounds pe r square inch
PSIA o r ps ia Pounds per square inch absolute
PSID o r psid Pounds pe r square inch differential
PSIG o r psig Pounds per square inch gauge
PSK
PS L
PSO
PSR
PSRD
PSS
P T o r pt
PTA
P T C
PTCR
PTCS
Phase shift keyed Phase shift keying Pulse shift keying
P r e s e n t sense l ines
Pad Safety Officer
P r o g r a m support requirements
P r o g r a m support requirements document
Pad Safety Supervisor
Point P r e s s u r e t e s t P r e s s u r e t ransducer
Propuls ion t e s t assembly Pu lse torque assembly
Por tab le t empe ra tu r e controller
Pad t e rmina l connection room
Propel lant tanking control subsystem
PTG
P T M
P T PS
P T T
PTU
PTV
PTVA
P U
PUCS
PUG
PUGS
PV
PVAC
PVR
PVSE
PVT
PWA
PWM
PWR
PYRO
Pu l sc torque genera to r
Proof t e s t model
Propel lant t r a n s f e r p ressur iza t ion sy s t em
P u s h t o talli
Product ion t e s t unit
Parachu te t e s t vehicle P i t ch t h ru s t vector
Propuls ion t e s t vehicle assembly
Propel lant utilization Propuls ion unit
P rope l lan t utilization control sy s t em
Prope l lan t utilization gauging
Prope l lan t gaging sys te in
Pu rge valve
Peak volts al ternating cu r r en t
P r e c i s i o n voltage re fe rence
P r i m a r y vehicle sy s t em engineer
P r e s s u r e , volume, t empe ra tu r e
P r a t t & W l ~ i t n e ~ A i r c r a f t
Pu l s e width modulation
Power
Pyrotechnic
QA
QA IS
QA L
QAM
QAT
QC
QCOP
Q- D
QLR
QM
QR D
QSL
QT
QTM
Q T P
QTV
QUAD
QUAL
QUAN
QVVT
-101-
Quality a s su r ance
Quality a s su r ance ins t ruct ion shee t
Quality Assurance Labora to ry
Ouality a s su r ance manual
Quality as su rance t e s t
Quality control
Quality control operation p rocedure
Quick disconnect
Quick Look Repor t
Qualified model
Quick r e l ea se disconnect
Qualification s ta tus l i s t
Qualification t e s t Quality t e s t
Qualification t e s t model
Qualification t e s t plan Qualification t e s t p rocedure
Qualification t e s t vehicle
Quadrant
Qualification
Quantity
Quality verif icat ion vibrat ion t e s t
Range Roentgen R 011
RIA
RA
RAB
RAC
RACEP
r ad
RAD
R adar alt imeter
Radiation analysis
Rendezvous Analysis Branch
Receiver audio center
Random access and correlation for extended per- formance
Radians
R adi a1 Radiation absorbed dosage Radiation absorbed dose Radiator
RADA Random access discrete address
RADAR Radio detection and ranging
RADC Rome Air Development Center (Rome, N. Y . )
RADDAC Radar acquisition data distribution and control
RADEM Random access delta modulation
RADIS o r radis Radians per second
RADN Radiation
RADOT Real-time automatic digital optical t racker
RADVS Radar, a l t imeter , and doppler velocity sensor
RAE Range, azimuth, and elevation
RAFDO Reentry Assistant Flight Dynamics Officer
RAMPART Radar advanced measurements program for analysis of reentry techniques
RANDAhi
RAPCON
RASP0
RATS/E /
RAYSPAN
R - B
R BA
RBE
R-C
RC
RCA
RCC
RCDR
RCE
RCNM
RCP
RCS
RCSC
Handom-acces s , non-destructive, advanced memory
Radar approacll control center (AF)
Rclsident Apollo Spacecraft P rog ram Office
Rangc and/or angle tracking sensor equipment
R a y t l ~ ~ o n spectrum analyzer
Radar beacon
Radar beacon antenna
Radiation biological effectiveness
Radio command
Range command Rate command Reaction control Reliability control Retrof i re controlle, r Reverse cur ren t Rotation control
Radio Corporation of America
Radio command control Radio command controller Range control center Recovery command center
Recorder
Radio command equipment
Reaction control numbering mat r ix
Recovery command post
Reaction control subsystem Readiness control system Reentry control system
Reaction control system controller
R C V
RCVR
RD
E & D o r E I I l
R DIj
E DMU
R D P
R DS
R DT
REC
RECO
RECOV
R E C P
RECT
R E F
REG
REGEN
REGN
R E L
REM
REND
R~xccivcd da ta l i ~ ~ ~ c . a ~ - c l ~ and d c ~ v ~ l o p ~ ~ ~ c n t
I < ~ \ d a r da ta buffer
R~xngc -d r i f t measur ing unit Rcxticlc display rneasurernent unit
Radiation dis t r ibut ion plot
Rc~cc~iver-decoder se lec to r
Radar data t r a n s n ~ i t t e r
Rccife , B raz i l Recovery
Roug11 cnginc cutoff
Request fo r engineering change proposal
Rect i f ier
Reference
Regulated Regulator
Regenerator
Regenera to r
Re lease
Roentgen equivalent man
Rendezvous
R E P
REQD
RES
RET
REV
R F
RFA
RFBA
RFC
R F I
R F P
RFQ
RFR
RFS
RFWAR
RG
RGA
RGAVS
RGP
RGS
Reliability engineering procedure Rendezvous evaluation pod
Required
Resolver
Return
Reverse
Radio frequency Recovery forces
Request f o r al teration
Request f o r budget adjustment
Request fo r change
Radio frequency interference
Request fo r procurement Request fo r proposal
Request fo r quote
Request fo r review
Radio frequency sys tem
Requirements fo r work and resources
Rate gyro
Rate gyro assembly
Range- -Gemini to Agena visual line of sight range
Rate gyro package Rate gyro package position indicator
Radio guidance sys tem Rate gyro sys tem
Right hand
RHC
RHCP
RHEB
RHFEB
R HI
R ICS
RID
RIME
RIOS
RIPCO
RIPS
RJD
RJDS
R J / E C
RKV
RLY
RM
RMD
RMS o r r m s
R NG
RNDZ
RNWY
RO
Rotation hand control
Right-handed circular polarization
Right-hand equipment bay
Right-hand forward equipment bay
Range-height indicator
Remote instrumentation control system
Review item disposition
Radio-inertial measuring equipment Radio inertial monitoring equipment
Receiving inspection operation sheet
Receiving inspection and preparation for checkout
Radar impact prediction system
Reaction jet dr iver
Reaction jet dr ivers
Reaction jet and engine control
Rose Knot Victor
Relay
Rendezvous maneuver
Reaction Motors Division (Dover, N. J . )
Root mean square
Range
Rendezvous
Runaway
Recovery operations Reference oscil lator
ROD
R OM
ROT
ROT1
ROTR
RP- 1
RPM o r rpm
R&QA
R & R
RR
R&R Dot
RRE
RRR
RRS
R R / T o r RRT
RR/T
RS
R/S2 o r r / s Z
RSC
RSCIE
RSCS
Rate of descent
Rough order of magnitude
Rotation
Recording optical tracking instrument
Receive only typing reperforator
Fuel (kerosene) Rocket propellant No. 1 (kerosene)
Revolutions per minute
Reliability and quality assurance
Rendezvous and recovery
Rendezvous radar Respiration ra te Retrorocket
Range and range rate
Rendezvous radar equipment
Revision review record
Restraint re lease system
Rendezvous radar transponder
Rendezvous radar and transponder
Remote station
Radius per second squared
Range safety control Rate systems console
Remote station communication interface equipment
Radar system checkout se ts Rate stabilization and control subsystem
RSDP
RSDS
RS/E
RSI
RSJ
RSO
RSOB
RSS
RSTC
RST/S
RSU
RSVE
R / T
R-T
RTC
RTCC
RTDS
RTG
RTK
Remote site data processor
Range safety destruct system
Range sensor/equipment
Roll stability indicator
Radio station, Japan
Range Safety Officer
Range Safety Observer
Reactant supply system Root sum square
Radar system test console
Range simulation t e s t / set
Range simulation unit
Resolver
Real t ime
Receiver- t ransmit ter Reperforator t ransmi t te r unit
Reliability tes t Resistance thermometers Retro table
Real-time command Real-time computer
Real-time computation center Real-time computer complex Real- t ime computing complex
Real-time data system
Radioisotope thermoelectric generator
Range t r acke r (ship)
RTM
RTS
RTSS
RTTV
RTU
RTV
RUPT
RV
RVR
RX
R&Z
RZ
, Real - t imemessage
Real-time scan unit
Real-time simulation system
Real-time television
Recovery task unit
Reentry test vehicle Room temperature vulcanizing
Interrupt
Reentry vehicle
Rendezvous radar
Receiver
Range and zero
Return to zero
SAT System assembly and test
SATCOM
SATCON
SATIF
SAVS
S- band
SBASI
SBUE
SIC
SC
S&C
SCA
SCAMA
SCARF
SCAT
SCATS
SCD
SCE
SCEA
Army Satellite Communications Agency
Satellite Control Center
Scientific and Technical Information Facility
Status and verification system
1500-5200 mc
Single bridge AS1 (Apollo Standard Initiator)
Switch backup entry
Spacecraft
Signal conditioner Spacecraft
Stabilization and control
Schedule change authorization Signal conditioner assembly Simulation control a r e a Spacecraft adapter
Switching conference and monitoring arrangement
Special Committee on the Adequacy of Range Facili t ies
Space communications and tracking
Simulation, checkout, and training system
Scheduled completion date Specification control drawing Subsystem command decoder
Signal conditioning equipment
Signal conditioner equipment assembly Signal conditioning electronics assembly
SCF
SCFM o r scfm
SIC FRR
SCG
SCHe
SCI
SCIP
SCN
SCO
SCORE
SCPA
SCR
SCRAPE
SCS
SCSCP
SCT
SICTC
SCTE
Sequence compatibility firing Spacecraft checkout facility
Standard cubic feet per minute
Spacecraft flight readiness review
Seismocardiogram
Super cr i t ical helium
Scientific
Self- contained instrumentation package
Specification change notice
Spacecraft operation
Spacecraft Ope rations Office Subcarr ier oscil lator
Satellite computer-operated readiness equipment
SCS control panel
Signal conditioner Silicon-controlled rectifier Strip chart recorder
P rogram to lighten the LEM structure
Sequence control system Spacecraft control system Stabilization and control subsystem
Sequence control system control panel
Scanning telescope Serial clock t ransmit ter Spacecraft crew t ra iner
Spacecraft tes t conductor Spacecraft tes t crew
Spacecraft central timing equipment
scu
SD
SDARS
SDBGS
SDC
SDCS
SDD
SDF
SDI
SDP
SDS
S-E
SE
SEC o r sec
SECO
SECORIDME
SECS
SECS SDP
SECT
Signal conditioning unit
Send data Subsystem command decoder
Sextant drive axis Shaft drive axis
Strapped-down all-attitude reference system
Strapped-down backup guidance system
Space digital computer System Development Corp.
Simulation, checkout and training- - DCS
Subchannel data distributor
Single degree of freedom
Selective dissemination of information
Subsystem Development Plan
Simulation data subsystem Simulation design section Splash detection system
Sequence of events
Systems engineer
Second Secondary
S- I V B engine cutoff Sustainer engine cutoff
Sequential collation of range
Sequential events control subsystem
Sequential Events Control Subs ys tem Development Plan
Sector
SEDD
SEDR
SEL
SENS
S E P
SEQ
SESL
SE/TD
SETS
SEXT
SFA
SFC
SFOF
SFOP
SFTZ o r s f t ~
SG
SGC
SGLS
SHA
SHF
Systems Evaluation and Development Division
Systems Engineering Department Report
Selector
Sensitivity Sensor
Separation Space electronic package Spacecraft electronic package Standard electronic package
Sequencer Scientific equipment
Space Environment Simulation Laboratory
Systems engineering and technical direction
Solar energy thermionic and conversion system
Sextant
Sun finder assembly
Specific fuel consumption
Space Flight Operations Facility
Space Flight Operations Plan
Slug-feet squared
Signal gene ra tor Stimulus generator
Space General Corp.
Space-to-ground link subsys tern
Sidereal hour angle
Super high frequency
SHFT
SHG
SHL
SHLD
SHORAN
S-I
SI
SIA
SIC
S&ID
SIDE
SIDL
S IG
SIMCHE
SIN
SINS
S IS
SITE
SL
S LA
Shaft
Steerable high gain
Shell
Shield
Short range navigation
Saturn I Sphere of influence
Systems integration
Systems integration a rea
Simulated input control
Space and Information Sys tems Division, NAA
Suprathermal ion detector
System identification data l is t
Signal
Simulation and checkout equipment
Sine
Stellar-inertial navigation system
Scientific instrumentation system Simulation interface subsystem
Spacecraft instrumentation tes t equipment
Switch light
Service module LEM adapter Spacecraft- launch vehicle adapter Spacecraft to lunar excursion module adapter
SLOS
SLR
SLU
SLUG
SLV
SMCC
SMCU
SMD
SMDF
SMI
SMJC
SML
SMOC
SMP
SMR
SM RCS
SMRD
SMS
SMAS
SMSC
Star line of s.ight
Radar slant range
Santa Lucia
Slugs
Saturn launch vehicle Space launch vehicle
Service module Stable member
Simulation monitor and control console
Simulated monitor and control unit
Structures and Mechanics Division Systems measuring device
SCATS main distribution f rame
Service module inser t
Service module jettison controller
Support mater ia l l i s t
Simulation mission operation computer
Summary maneuver plan
Small missi le range Supply-maintainability- r e cove rability
Service module reaction control subsystem
Spin motor rotation detector
Standard modular system
Signal Missile Support Agency
Service module sequence controller
SMT
SIN
SNR
SNSR
SOC
SOFAR
SOL
SOM
SOP
SORT1
SORTIS
SOS
SOTIM
sov
SOW
S I P
S P
SPA
SPACE
SPACON
SPADATS
Small missi le te lecamera
Serial number Signal to noise ratio
Signal to noise ratio
Sensor
Satellite Operations Control Center Simulation ope ration computer
Sound fixing and ranging system
Solenoid
Star t of message
Standard operating procedure
Star oriented real- t ime tracking instrument
Star oriented real-t ime instrumentation system
Share operating system Space ordnance system
Sonic observation of t ra jectory and impact of missi les
Shutoff valve
Star t of word
Serial to parallel
Static pressure
S-band power amplifier Servo power assembly
Spacecraft prelaunch automatic checkout equipment
Space communicai;ions network
Space detection and tracking system
SPAF
SPAN
SPANDAR
SPASUR
SPC
SPD
SPE
SPEC
SPG
SPL
SPMX
SPO
SPR
SPS or sps
SPU
SQ o r s q
SQW
SRA
SRC
SRCS
SRO
SRP
- 118-
Simulation processor and formatter
Solar Part ic le Alert Network
Space range radar
Space surveillance system
Stored program command
Stored program decommutator
Service propulsion engine
Specification
Single point- ground
Sound pressure level
Speed-o-max pen recorder
Systems Project Office
Solid propellant rocket
Samples per second Secondary propulsion system Service propulsion subsystem
Service propulsion unit
Square
Square wave
Spin reference axis
Sample return container
Stabilization and reaction control subsystems
Supervisor range operations
Seat reference point
SRS
SRSCC
SRSS
s 1s
SSB
SSC
SSD
SSDF
SSE
SSECO
SSET
SSI
SSL
SSO
SSR
SSRD
SST
SSTO
STA
Simulated remote site
Simulated remote site control console
Simulated remote site subsystem
Samples per second Sub/system
Station selector
Sextant shaft angle Space suit assembly
Single sideband
Space suit communications
Space Systems Division (USAF)
Space Science Development Facility (NAA)
Spacecraft simulation equipment
Second stage engine cutoff
Surveyor Scientific Evaluation Teams
San Salvador Island Second stage ignition
Store sense lines
Spacecraft Systems Officer
Staff Support Room
Spacecraft station requirement date
Simulated s t ructural tes t Spacecraft systems test
Second stage tailoff
Sextant trunnion angle Station
STAE
STADAN
S'L'AR
STAT
S ' Y 1;
S'T GY
STC
STD
STDA
STE
STEA
STG
STGR
STIM
STL
STM
STOR
STRUCT
STU
S;ltcLllitt% Tracking a n d Data Acquisition Net Spdct. Tracking and Data Acquisition Network
Sci~antific and Teclinical Aerospace Reports
Status
Systc.~ns Tes t Branch
Sacramento Tes t Center Spacecraft t e s t conductor System tes t complex
Spacecraf t Technology Division
Sextant trunnion drive axis
Spacecraft t es t engineer Special t es t equipment
System tes t equipment assembly
Space Task Group
Str inger
Stimulus
Space Technology Laborator ies , Inc.
Service tes t model
Storage
Structure
Special t es t unit Special t es t units (GSE) Static t e s t unit
SUM Summary Summing
SUPT
SURF
sv
S - v
S /V FRR
SVSE
SVT
s / w
SW
SWIP
SWR
SXT
SYNC
SYS
Support
Surface
Space vehicle
Saturn V
Space Vehicle Flight Readiness Review
Support vehicle sys tems engineer
System verification t e s t s
Statement of work
Switch
Super Weight Improvement P r o g r a m
Standing wave ra t io
Sextant Sextant telescope
Synchronization Synchronous
System
TAC
TACH
TAC-NAV
TAIR
TANG
TAR
TARE
T B
TBD
TC
TCA
TCD
Elapsed t ime
Tes t ar t ic le T imer assembly Tra jec tory analysis Translation acceleration Trave l authorization Trunnion angle (sextant)
Transmi t te r - audio center
Tachometer
Tactical- navigation display
Tes t and inspection record
Tangential
Tes t agency repor t
Te lemet ry automatic reduction equipment
T alkback indicator
To be determined
Tes t conductor Thermocouple Thrus t chamber Time to compute (IBM) Trans fe r control Translation control
Telecommunications subsystem Tes t controller Transmitt ing and command
Thrus t chamber assembly Thrus t controller assembly Translat ion controller assembly
Tes t completion data
'1'11 1 . 1 1 ~ 1 clia~mber fucl valve
-1' C 01'
I'CS
1 (:sc.
TLSTS
TCTO
1'CTR
TD
T DD
TDDL
T D l 0
TDM
T D P
T DR
T DS
TDWD
'7 '~~11i11~~rature control model T~-;>cli ing c a m e r a mount
T111.1lst chamber oxidizer valve
T ~ ~ m p c ~ r a t u r e control systern
Traint.1- control and simulation computer
Time c r i t i c a l s ta tus t r an smi s s ion subsys tem
l ' i ~ n e compliance technical o r d e r
T ime compliance technical r equ i rements
Technical di rect ive Tiliic delay Touchdown
Time delay
T sacking and data Transposi t ion and docking
Ta rge t docking adapter Trunnion dr ive axis (sextant)
Timing data distr ibution
Time division data link
Timing and data input/output
Te lemet r ic data monitor T ime division multiplex
Tracking data p roce s so r
T e s t d iscrepancy repor t (NAA)
Tra jec to ry data sys tem
Transonic dynamic wind tunnel (LRC)
TEA
TEC
T E I
TELEDAC
TEM
T E M P
TEO
TERM
T E T
TEX
T F L
TFR
TGS
TH
THC
THERM
T I
Tempora ry duty
Te l eme t ry event
Timing e lect ronics T ransea r t h
T ransea r t h abor t
T r ansea r t h coas t
T r a n s e a r t h injection
Te l eme t ry pulse data decommutator
Te rmina l energy management display T ransea r t h midcourse
Tempera tu r e
T ransea r t h orbi t
Terminat ion
T ransea r t h t r a jec to ry
Corpus Chris t i , Tex.
T e s t facility
T ime f r o m launch
Trouble and fa i lure r epo r t
Te rmina l guidance Torque genera to r
Te l eme t ry ground station
Theta
Trans la t ion hand control
T h e r m a l
Texas Ins t ruments , Inc. Timing in terval
TIDC
TIE
TIGN
TIM
TIROS
T J
TJM
T L
TLC
T L F
T LG
TLI
TLM
TLO
TLT
T LV
TLW
T / M
TM
TMC
TMG
TMS
Technical Information Data Center
Technical integration and evaluation
Time of ignition
Tracking instrument mount
Television infrared observation satellite
Tower jettison
Tower jettison motor
T rans lunar
Translunar coast
Te rminal landing facility
Low gate target
T ranslunar injection
Telemetry
Translunar orbit
Translunar t ra jectory
Tes t launch vehicle
Elapsed time in launch window
Telemetry
Technical manual Telemetry Tes t model
The Marquardt Company
Thermal meteoroid garment Timing
Telemetry multiplex system
TN
TO
T&O
T 01
TORF
TORQ
T P
TPA
TPAC
T PE
T P I
TPR
T PS
TRAC
TRAC(E)
TRANS
TRC
TRI
Technical note
Technical order
Tes t and operation
Transfer orbit insertion
Time of re t rof i re end of mission
Terminal phase Tes t point Tes t procedure
Tes t Preparat ion Area
Telescope precision angle counter
Tes t program engineer (NAA)
Terminal phase initiation
Telescopic photographic recorder
Tes t preparation sheet Thermal protective subsystem
Transmit- receive Travel request
Tape recorder Test request Time to retrof i re Tracking
Total records access control (NAA)
Tracking and communication (ex t ra- te r res t r ia l )
Trans lation
Tes t Review Coordinators
T rinidad
TRIDOP
TRK
TRNFR
TRS
TRUMP
TRUN
TRW
TSB
TSE
TSS
TSSS
TSU
TTC
TTCA
T T E
TTG
TTM
TTR
TTY
TTY-FD
- 127-
Triangulation dopple r
T rack
Trans fe r
T ime reference sys tem Time reference sys tem (spacecraf t )
Targe t radiation measurement p rogram
T runnion
Thompson Ramo Wooldridge Inc.
Technical support building
Tes t support equipment
T ransmi t sys tem
T e s t s i te , s torage s i t es
T ime s tandard unit
Te lemet ry tracking and command
Thrus t and t ransla t ion control ler assembly
Time to event
T ime to go
The rma l t e s t mcdel
Targe t t racking r ada r
Teletype
Ful l duplex teletype
The rma l vacuum
Television Thrus t vector
TVA
TVC
TVCS
TVD
TVSA
TVSM
TWR
TWT
TWX
Thrus t vector alignment
Thrus t vector control
Thrus t vector control sys tem
Vert ical descent t a rge t
Thrus t vector position s e rvo amplifier
Television sys t ems monitor
Thrust-to-weight ra t io
Tower
Traveling wave tube
Te legram
T ime to r e s e t T ransmi t t e r
UA
UAC
UAL
UAMP
UAW
UCD
UCR
UCSD
UCT
UDL
UDMH
UDOP
UDRL
UFS
UHF
UI/IN o r u i / i n
UK
UMB
UNPS
UPTL
UNREG
UR
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Urinalys is
United A i r c r a f t Corporat ion
United A i r c r a f t Labora to r ies
Mic roampe re
United Auto Workers Union
Urine collect ion device
Unsat is factory condition r epo r t
Universa l communications switching device
Urine collection and t r a n s f e r
Up-data link
Unsymmet r ica l dimethyl hydrazine
Ultra-high f requency doppler
Up-down, r ight-left
Unified f requency sy s t em
Ul t ra high frequency
Microinches p e r inch
United Kingdom Unknown
Umbilical
Unive r s a1 power supply (NAA)
Up-link t e l eme t ry
Unregulated
Unsat is factory r epo r t Uprange
us
USAF
USAS
USASSA
USB
USBE
USCTP
USGS
USVMS
USWB
UIV
UV-IR
UW
- 130-
Microseconds
United States A i r Fo rce
United States Army Ship
United States Army Signal Supply Agency
Unified S-band
Unified S-band equipment
Unified S- band compatibility t e s t program
United States Geological Survey
Urine system volume measuring system
United States Weather Bureau
Unde rvoltage
Ultra violet-infrared
Microwatts
Velocity Voice Volt
V- A
VAB
VAC
vac
v c
VC
VCC
VCD
VCI
VCO
VCXO
VDC
VIDELTA
VE
V-E
VECO
VEFCO
VEH
VEL
VERLORT
Vertical Assembly Building
Volts alternating current
Volts, alternating current
Circular velocity
Voice coordination Voice frequency channel
Voice control center
Velocity change display
Velocity change indicator
Voice controlled oscil lator Voltage controlled os cillation Voltage controlled oscillator
Voltage controlled crystal oscillator
Volts d i rec t cur rent
Velocity increment
Escape velocity
Vernier engine cutoff
Vertical functional checkout
Vehicle
Velocity
Very long range tracking radar
VERKITRAC
VERT
V F
VFO
VGP
VHF
VHF/AM
VHF/FM
VHFRA
VHFRAB
VHFRB
VI
V IB
VIC
v IS
V L F
VLV
VM
VMS
VO
VOCAMP
VOL
Vern i e r t racking by auto cor re la t ion
Ver t i ca l
Voice frequency
Var iable f requency osci l la tor
Vehicle ground point
Very high frequency
Very high f requency amplitude modulation Very high f requency/audio modulated
Ve ry high f requency f requency modulation
Very high frequency recovery antenna
Very high f requency recovery antenna backup
Very high f requency recoverv beacon
Inser t ion velocity
Vibration
Vacuum Ins t rument Corporat ion
Visual ins t rumentat ion subsys tem
Ver t i ca l launch faci l i ty Very low frequency
Valve
Measured velocity Vol tmeter
Velocity m e t e r subsys tem
Initial velocity
Voice control and moni tor position
Volume
VOLT
VOM
V-OT&R
VOX
VPK
VPP
VR
V-R
VRB
VSE
VSM
VSMC
VSO
VSSA
v - S - v
VSWR
VT
VTF
VTOL
VTS
VTVM
VY
Voltage
Volt- ohm -mill imeter
Verlort-on t rack and range
Voice operated switch relay
Volts peak
Volts, peak to peak
Vendor requirement Voltage regulator
Verlort- range
Very high frequency recovery beacon
Vehicle systems engineer
Velocity measuring system
Video switching matr ix control
Vehicle system officer Very stable oscillator
Vehicle systems status advisor
Vehicle- surface-vehicle
Voltage standing wave ratio
Vibration tes t
Vertical tes t facility
Vertical takeoff and landing
Vertical tes t stand
Vacuum tube voltmeter
Yaw velocity
W o r w
WADC
WAR
WAT
WB
WBD
WBDL
WBS
WDL
WECO
WIG
WIND
WMS
WOM
WOO
WPAFB
WPM o r wpm
WPS o r wps
WRF
WS
WSMR
WSO
Watts
Wright A i r Development Command
Work around requ i rement (NAA)
Watertown ( sh ip )
Weathe r Bureau Wide band
Wide band data
Wide band data link
Work breakdown s t ruc tu r e
Wes t e rn Development Labora to r ies (Phi lco)
Wes t e rn E l ec t r i c Company
Water-glycol
Weather indicator and display sy s t em
Waste management sy s t em Water measu remen t sect ion
Woome r a , Aus t ra l i a
Wes t e rn Operations Office (NASA)
Wrigh t -Pa t te r son A i r F o r c e Base
Words p e r minute
Words p e r second
Work reques t f o r m
Wallops Island Station
White Sands Miss i l e Range
White Sands Operation
WSTF
WTR
- 135-
White Sands Tes t Faci l i ty
Wes te rn Tes t Range
X c
Xs
XCUR
X13UCER
X F M R
X MIT
XMTR
XPONDER
X'TAL
XTNL CR
XUV
XY
- 136-
Cot11 17, ; ~ n d ~l~odulc: s ta t ion
S(, 1-vice, rnodule s ta t ion
Transcc:ivc%r
T I - ~ I I I S C ~ ~ I C ~ : ~
r . 1 r a n s i u r ~ n c : ~ -
T ransmi t
Transrmitter
Transponder
C rys t a l
Ex te rna l counter
X- ray and ex t r eme ultraviolet
Telephone exhange (Cape Kennedy)
Y
Y T V
- 137-
Y a w
Y a w th rus t vector
z
ZAR
Z I
ZN o r zr,
ZULU
Z Z B
- 138-
Vert ica l , Z stat ion ( spacecra f t )
Nike Zeus acquisi t ion r a d a r
Zont, of in te r io r (continental United S ta tes )
Zinc
Greenwich mean t ime
Zanzibar , Af r ica
- 139-
Differential p r e s s u r e
Dif ferent ia l velocity
P h a s e
