ACRONYM LIST

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To add, delete, or correct any of the acronyms in this list, please contact:Clayton Stokes at: x6694; Code 440; cstokes@hst.nasa.gov.

ORAndy Garland at: x8071; Code 440; agarland@hst.nasa.gov.Thank you!

AÅ ANGSTROM (10-10m)

AA ASSOCIATE ADMINISTRATOR

AAS AMERICAN ASTRONOMICAL SOCIETY

ABA ABERRATED BEAM ANALYZER

AFB AIR BEARING FLOOR

AC ALTERNATING CURRENT

ACE ACTUATOR CONTROL ELECTRONICS

ACK ACKNOWLEDGE MESSAGE

ACP ALTERNATE COMMAND PLAN

ACS ACTUATOR CONTROL SUBSYSTEM

ADVANCED CAMERA FOR SURVEYS

AD APERTURE DOOR

ADASS ASTRONOMICAL DATA ANALYSIS SOFTWARE

AND SYSTEMS

ANALOG-TO-DIGITAL CONVERTOR

ADP AUTOMATIC DATA PROCESSOR

ADPE AUTOMATIC DATA PROCESSING EQUIPMENT

AEDP ASTROMETRY AND ENGINEERING DATA PROCESSING

AESE AIRBORNE ELECTRICAL SUPPORT EQUIPMENT

AFM ACTUATED FOLDING MIRROR (WF/PC2)

AFPRO AIR FORCE PLANT REPRESENTATIVE OFFICE

AFQA AIR FORCE QUALITY ASSURANCE

AGC AUTOMATIC GAIN CONTROL

AGCS ALLIED SIGNAL GUIDANCE CONTROL SYSTEMS

AHSE ASSEMBLY AND HANDLING SUPPORT EQUIPMENT

AIP ASSURANCE IMPLEMENTATION PLAN

AIT ASSEMBLY, INTEGRATION, AND TEST

AIV ASSEMBLY, INTEGRATION, AND VERIFICATION

AM2 AMPS PER METER SQUARED

AMS ACTUATOR MECHANIXM SUBSYSTEM

AMSB ADVANCED MECHANISM SELECTION BOX

AO ANNOUNCEMENT OF OPPORTUNITY

AOS ACQUISITION OF SIGNAL

AP APPLICATIONS PROCESSOR

APART A STRAYLIGHT PROGRAM BY BRO CORP.

APL APPROVED PARTS LIST

APPLIED PHYSICS LAB

APOP AUTOMATED PROGRAM OPERATING PLAN

APU AUXILIARY POWER UNIT

AR ARCHIVAL RESEARCHER

ARO AFTER RECEIPT OF ORDER

AS AFT SHROUD

ASAC ALLIED SIGNAL AEROSPACE CORPORATION

ASCS AFT SHROUD COOLING SYSTEM

ASE AIRBORNE SUPPORT EQUIPMENT

ACRONYM LIST

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ASCII AMERICAN STANDARD CODE FOR INFORMATION

INTERCHANGE

ASI ADVANCED SCIENCE INSTRUMENT

ASIPE AXIAL SCIENCE INSTRUMENT PROTECTIVE ENCLOSURE

ASIS AXIAL SCIENTIFIC INSTRUMENT SIMULATOR

ASTIF ADVANCED FL COMPUTER S/W TEST & INTEGRATION

FACILITY

AST ASTROMETRY SCIENCE TEAM

ASW ADDRESS AND SYNCHRONIZATION WORD

AT ACCEPTANCE TEST

ALIVENESS TEST

ASTROMETRY TEAM

ATC ABSOLUTE TIME COMMAND

ATDRSS ADVANCED TDRSS

ATM AUXILIARY TRANSPORT MODULE

ATP ABSOLUTE TIME PROCESSOR

ACCEPTANCE TEST PROCEDURE

AUTOMATED TEST PROCEDURE

ATR ACCEPTANCE TEST REVIEW

AURA ASSOC. OF UNIV. FOR RESEARCH IN ASTRONOMY

A&V ACCEPTANCE & VERIFICATION

ASSEMBLY & VERIFICATION

AWG AMERICAN WIRE GAUGE

AWI ASSEMBLY WORK INSTRUCTION

AXAF ADVANCED X-RAY ASTROPHYSICS FACILITY

AXIS ACCESS AND EXCHANGE INFORMATION SYSTEM

BBA BOEING COMPANY

BASD BALL AEROSPACE SYSTEMS DIVISION

BAe BRITISH AEROSPACE

BAPS BERTHING AND POSITIONING SYSTEM

BATC BALL AEROSPACE TECHNOLOGY CORPORATION

BB BREADBOARD

BBXRT BROAD BAND X-RAY TELESCOPE

BCU BENCH CHECKOUT UNIT

BUS COUPLER UNIT

BCWP BUDGETED COST OF WORK PERFORMED

BCWS BUDGETED COST OF WORK SCHEDULED

BD BUS DIRECTOR

BDA BERMUDA GSTDN TRACKING STATION

BER BIT ERROR RATE

BIA BALL IMAGE ANALYZER

BIK BATTERY IMPROVEMENT KIT

BISIPE BOLTED INTERFACE SCIENTIFIC INSTRUMENT PROTECTIVE

ENCLOSURE

B/L BASELINE

BLT GREENBELT, MD - GSTDN TRACKING STATION

BMC BLIND MATE CONNECTOR

BOB BREAK-OUT-BOX

BOD BENEFICIAL OCCUPANCY DATE

BRIGHT OBJECT DETECTOR

BOF BEGINNING OF FILE

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BOL BEGINNING OF LIFE

BOT BEGINNING OF TAPE

BOW BRIGHT OBJECT WARNING

BPI BITS PER INCH

BPS BITS PER SECOND

BPSK BINARY PHASE SHIFT KEY

BRS BLOCK RECORDER SYSTEM

BRZ BASELINE RELEASE ZERO (SOFTWARE BENCH)

BTA BLANKET TENSION ASSEMBLY

BRDF BI-DIRECTIONAL REFLECTANCE

BTE BENCH TEST EQUIPMENT

BTU BRITISH THERMAL UNIT

CC CELSIUS

C&DH COMMAND & DATA HANDLING

CA CALIBRATION UNIT

CONTRACT AWARD

CAD COMPUTER AIDED DESIGN

CAL CALIBRATION

CAM CORONOGRAPHIC APODIZER MECHANISM

COMPUTER AIDED MANUFACTURING

CAMAC COMPUTER AIDED MEASUREMENT AND CONTROL

CAP CREW ACTIVITY PLANNING

CAPCOM CAPSULE COMMUNICATOR

CAS COSTAR ALIGNMENT SYSTEM

CARD CONSTRAINTS AND RESTRICTIONS DOCUMENT

CASH CATALOG OF AVAILABLE AND STANDARD HARDWARE

CROSS-AFT SHROUD HARNESS

CAT CREW AID AND TOOL

CCAFS CAPE CANAVERAL AIR FORCE STATION

CCB CONFIGURATION CONTROL BOARD

CCC CHARGE CURRENT CONTROLLER

CHEMICAL CONTAMINATION CONTROL

CCD CHARGE-COUPLED DEVICE

CCHP CONSTANT CONDUCTANCE HEAT PIPE

CCIP CONTAMINATION CONTROL IMPLEMENTATION PLAN

CCL CLOSED CONFERENCE LOOP

CCN CONTRACT CHANGE NOTICE

CCP CONTAMINATION CONTROL PLAN

CCR CONFIGURATION CHANGE REQUEST

CCS CONTAMINATION CONTROL SYSTEM

CONTROL CENTER SYSTEM

CCT COMPUTER COMPATIBLE TAPE

CCTV CLOSED CIRCUIT TELEVISION

CDB CALIBRATION DATABASE

CDBS CALIBRATION DATABASE SOFTWARE

CDI COMMAND DATA INTERFACE

COMMAND DETECTOR INTERFACE

CRITICAL DECISION ISSUE

CDM CALDWELL DISPLACEMENT MONITOR

CDR CRITICAL DESIGN REVIEW

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CDRL CONTRACT DATA REQUIREMENTS LIST

CD & SC COMMUNICATIONS DISTRIBUTION & SWITCHING CENTER

CDU COMMAND DATA UNIT

COMMAND DECODER UNIT

COMMAND DETECTOR UNIT

CEA CENTRAL ELECTRONICS ASSEMBLY

CEB CCD ELECTRONICS BOX

CEE805 NASCOM INTERFACE HARDWARE

CEHT CAMERA ELECTRICAL HIGH TENSION

CEI CONTRACT END ITEM

CEIT CREW EQUIPMENT INTERFACE TEST

CEP CONTAMINATION ENVIRONMENT PACKAGE

CES COMPUTER ENGINEERING SYSTEMS

CEU CAMERA ELECTRONICS UNIT

COMMAND EXECUTE UNIT

CFE CONTRACTOR FURNISHED EQUIPMENT

CFO CHIEF FINANCIAL OFFICER

CFRP CARBON FIBER REINFORCED PLASTIC

CG CENTER OF GRAVITY

CHAMP CONSOLIDATED HUBBLE ASSOCIATED MISSION PRODUCTS

CI CONFIGURATION INSPECTION

CONFIGURATION ITEM

CIAF CALIBRATION INTEGRATION ALIGNMENT FACILITY

CIF COMPUTER INTERFACE FUNCTION

CARGO INTEGRATION REVIEW

CIIL CONFIGURED ITEMS IDENTIFICATION LIST

CIL CRITICAL ITEMS LIST

CIR CARGO INTEGRATION REVIEW

CIRCE CALIBRATED INFRARED SOURCE

CIT CALIFORNIA INSTITUTE OF TECHNOLOGY

CITE CARGO INTEGRATION TEST EQUIPMENT

CIU COMPUTER INTERFACE UNIT

CLF CONTROL AND LIMIT FILE

CLPS CALIBRATION LAMP POWER SUPPLY

CLS COOLING LOOP SIMULATOR

CM CAMERA MODULE

CONFIGURATION MANAGEMENT

cm CENTIMETER

CMD COMMAND

CMDG COMMAND GROUP

CMDS COMMAND SPECIFICATION

CME CAMERA MODULE ELECTRONICS

CMO CONFIGURATION MANAGEMENT OFFICER

CMOS COMPLEMENTARY METAL OXIDE SEMICONDUCTOR

CMP CONFIGURATION MANAGEMENT PLAN

CMS COMMAND MANAGEMENT SYSTEM

C/O CHECKOUT

CO CONTRACTING OFFICER

COB CLOSE OF BUSINESS

COG CONTINGENCY OPERATIONS GROUP

COMCON COMMUNICATION CONTACT

COP CONTINGENCY OPERATIONS PROCEDURE

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COPROCESSOR

COPE CONTINGENCY ORBITAL REPLACEMENT UNIT

PROTECTIVE ENCLOSURE

COPS CONFIGURATION MANAGEMENT ON-LINE PROCESSING

SYSTEM

Co-PI Co PRINCIPAL INVESTIGATOR

COS COSMIC ORIGINS SPECTROGRAPH

COSTAR CORRECTIVE OPTICS SPACE TELESCOPE AXIAL

REPLACEMENT

COTR CONTRACTING OFFICER'S TECHNICAL REPRESENTATIVE

CPAF COST-PLUS-AWARD FEE

CPFF COST-PLUS-FIXED FEE

CPI CHARACTERS PER INCH

CPIF COST PLUS INCENTIVE FEE

CPL CAPILLARY PUMP LOOP

CPM CENTRAL PROCESSOR MODULE

CPS CAMERA POWER SUPPLY

CENTRAL POWER SUPPLY

CHARACTERS PER SECOND

CPT COMPREHENSIVE PERFORMANCE TEST

CPU CENTRAL PROCESSING UNIT

CRC CYCLIC REDUNDANCY CHECK

CRF CANISTER ROTATION FACILITY

CROSS CROSS SUPPORT SERVICE

CRS COMMAND RELAY SECTION (OTA)

CRT CATHODE RAY TUBE

CRU COMMUNICATIONS REGISTER UNIT

CS CREW SYSTEMS

CSAA COMMITTEE ON SPACE ASTRONOMY & ASTROPHYSICS

CSC COMPUTER SCIENCES CORPORATION

CSR CUSTOMER SUPPORT ROOM

CSRS CIVIL SERVICE RETIREMENT SYSTEM

CSS CENTER SUPPORT STRUCTURE

COARSE SUN SENSOR

CSSA COARSE SUN SENSOR ASSEMBLY

CTA COMPUTER TECHNOLOGY ASSOCIATES

CTE CHARGE TRANSFER EFFICIENCY

CTE COEFFICIENT OF THERMAL EXPANSION

COMPONENT TEST EQUIPMENT

CTU CENTRAL TERMINAL UNIT

CTV COMPATIBILITY TEST VAN

CU CALIBRATION UNIT

CONTROL UNIT

UNIVERSITY OF COLORADO

CU/SDF CONTROL UNIT/SCIENCE DATA FORMATTER

CVC CURRENT-TO-VOLTAGE CONVERTOR

CVCM COLLECTED VOLATILE CONDENSABLE MATERIALS

CVT CURRENT VALUE TABLE

C&W CAUTION & WARNING

CY CALENDAR YEAR

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DD/A DIGITAL-TO-ANALOG

DA DEFLECTION AMPLIFIER

DAC DIGITAL-TO-ANALOG CONVERTOR

DADS DATA ARCHIVE AND DISTRIBUTION SERVICE

DAR DEVIATION AUTHORIZATION REQUEST

DAS DEFLECTION AMPLIFIER SUBSYSTEM

DASDF DF-224 ANALYSIS AND S/W DEVELOPMENT FACILITY

dB DECIBEL

DB DATABASE

DBA DIODE BOX ASSEMBLY

DBMS DATABASE MANAGEMENT SYSTEM

dBw DECIBEL REFERENCED TO 1 WATT

D/C DATA CODE

DC DETECTOR CONTROLLER

DIRECT CURRENT

DCAA DEFENSE CONTRACTOR AUDIT AGENCY

DCAMO DEFENSE CONTRACT MANAGEMENT AREA OPERATIONS

DCB DESIGN CHANGE BOARD

DCDD DESIGN CHARACTERISTICS DEFINITIONS DOCUMENT

DCE DEPLOYMENT CONTROL ELECTRONICS

DCF DATA CAPTURE FACILITY

DCL DETECTOR CALIBRATION LAB

DCMC DEFENSE CONTRACT MANAGEMENT COMMAND

DCP DATA AND COMMAND PROCESSOR

DELAYED COMMAND PROCESSOR

DCR DESIGN CERTIFICATION REVIEW

DOCUMENT CHANGE RECORD

DD DATA DISCREPANCY

DDC DIGITAL DATA CONTROL

DDCMP DIGITAL DATA COMMUNICATIONS MESSAGE PROTOCOL

DDL DATA DEFINITION LANGUAGE

DDR DATA DISCREPANCY REPORT

DE DETECTION EFFICIENCY

DEA DETECTOR ELECTRONICS ASSEMBLY

DEB DETECTOR ELECTRONICS BOX

DEC DIGITAL EQUIPMENT CORPORATION

DECLINATION

DECNet DIGITAL EQUIPMENT CORPORATION LOCAL AREA

NETWORK SOFTWARE SYSTEM

DEFL DEFLECTION

DF-224 SSM ONBOARD DIGITAL FIXED POINT - TWO’S COMPLEMENT

24-BIT WORD ROCKWELL COMPUTER MODULE

DFS DEMODULATION AND FRAME SYNCHRONIZER

DFT DOWN FLOW TENT

DG1 DATA GROUP 1

DG2 DATA GROUP 2

DH DATA HANDLING

DHU DETECTOR HEAD UNIT

DI DIODES FOR ISOLATION

DIB DETECTOR INTERFACE BOARD

DICU DATA HANDLING INTERFACE AND CONTROL UNIT

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DIM DATA INPUT MODULE (OCE)

DIP DUAL INLINE PACKAGE

DIU DATA INTERFACE UNIT

DLC DIAMOND LIKE COATING

DM DATA MANAGEMENT

DMA DIRECT MEMORY ACCESS

DMF DATA MANAGEMENT FACILITY

DM&O DATA MANAGEMENT AND OPERATIONS

DMP DEPLOYMENT AND MAINTENANCE PLATFORM

DMS DATA MANAGEMENT SYSTEM

DEWAR MONITORING SYSTEM

DMU DATA MANAGEMENT UNIT

DN DIGITAL NUMBER

DOB DEPLOYABLE OPTICAL BENCH

DOC DATA OPERATIONS CONTROL

DATA OPERATIONS CONTROLLER

DATA OPERATIONS CENTER

DOCR DATA OPERATIONS CONTROL ROOM

DOD DEPARTMENT OF DEFENSE

DEPTH OF DISCHARGE

DOMSAT DOMESTIC SATELLITE

DPA DESTRUCTIVE PHYSICAL ANALYSIS

DPC DIRECT POWER CONVERTER

DPGS DATA PRODUCT GENERATION SYSTEM

DPM DEPUTY PROJECT MANAGER

DPMR DEPUTY PROJECT MANAGER/RESOURCES

DPMT DEPUTY PROJECT MANAGER/TECHNICAL

DPRO DEFENSE PLANT REPRESENTATIVE OFFICE

DPS DESIGN AND PERFORMANCE SPECIFICATION

DQE DETECTOR QUANTUM EFFICIENCY

DR DATA REQUIREMENTS

DISCREPANCY REPORT

DRCS DATA RECEIVER AND COMMAND SENDER

DRD DATA REQUIREMENTS DOCUMENT

DRL DATA REQUIREMENTS LIST

DRM DESIGN REFERENCE MISSION

DRWA DUAL ROLL WRIST ASSEMBLY

DS DIODES FOR SUPPRESSION

DSASS DIGITAL SUN ANGLE SENSING SYSTEM

DSN DEEP SPACE NETWORK

DSS DIGITIZED SKY SURVEY

DSTIF DF-224 S/W TEST AND INTEGRATION FACILITY

DT DECISION TREE

DTC DESIGN TO COST

DTO DEMONSTRATION TEST OBJECTIVE

DTV DIGITAL TELEVISION

DWG DRAWING

EE/A EPHEMERIS/ATTITUDE

EAC ESTIMATE AT COMPLETION

EB ELECTRONICS BAY

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EBA ELECTRONICS BAY ASSEMBLY

EBP ELECTRONICS BASE PLATE

EBS ELECTRON BOMBARDED SILICON

EBTE ELECTRONICS BAY TEST EQUIPMENT

EBU ELECTRONICS BAY UNIT

ECA ELECTRONICS CONTROL ASSEMBLY

ECF EUROPEAN COORDINATING FACILITY

EC/LSS ENVIRONMENTAL CONTROL/LIFE SUPPORT SYSTEMS

ECP ENGINEERING CHANGE PROPOSAL

ECS ENVIRONMENTAL CONTROL SYSTEM

ECU ELECTRONIC CONTROL UNIT

ECWIPS ENVIRONMENTALLY CONTROLLED WORK IN PROCESS

ED ENGINEERING DATA

EDB ENGINEERING DATABASE

EXTERNAL DATA BUS

EDI ENGINEERING DATA INTERFACE

EEE ELECTRICAL, ELECTRONIC & ELECTROMECHANICAL (PT.)

EER ENGINEERING AND ECONOMIC RESEARCH

EES ELECTRICAL EQUIPMENT SECTION

EGSE ELECTRICAL GROUND SUPPORT EQUIPMENT

EHB EVA HARDWARE BOARD

EHT ELECTRICAL HIGH TENSION

EIA ELECTRONIC INDUSTRIES ASSOCIATION

EICIT ELECTRICAL INTERFACE CONTINUITY/ISOLATION TEST

EIK ENGINEERING SCIENCE TAPE RECORDER IMPROVEMENT

KIT

EIRP EFFECTIVE ISOTROPIC RADIATED POWER

EIRR EXTERNAL INDEPENDENT READINESS REVIEW

EJRT ENGINEERING JOB RELEASE TICKET

ELG ENGINEERING LOG GENERATOR

ELV EXPENDABLE LAUNCH VEHICLE

EM ENGINEERING MODEL

ENGINEERING MEMORANDUM

EMC ELECTROMAGNETIC COMPATIBILITY

EMI ELECTROMAGNETIC INTERFERENCE

EMU EXTRAVEHICULAR MOBILITY UNIT

ENG ENGINEERING

EO ENGINEERING ORDER

EOF END OF FILE

EOL END OF LIFE

EOS EARTH OBSERVATORY SYSTEMS

EOT END OF TAPE

EOY END OF YEAR

EP EXPLORER PLATFORM

ELECTRICAL POWER

EPDSU ENHANCED POWER DISTRIBUTION AND SWITCHING

UNIT

EPS ELECTRICAL POWER SYSTEM

ER EQUIPMENT ROOM

ERO EARLY RELEASE OBSERVATION

ES EQUIPMENT SECTION

ESA EUROPEAN SPACE AGENCY

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ESC ELECTRONIC STILL CAMERA

ESD ELECTROSTATIC DISCHARGE (CONTROLS)

ESEL EVA SUPPORT EQUIPMENT LIST

ESM ELECTRONICS SUPPORT MODULE

ESN ESSENTIAL SERVICES NODE

ESO EUROPEAN SOUTHERN OBSERVATORY

ESS ENGINEERING SUPPORT SYSTEM

ESTE ELECTRICAL SPECIAL TEST EQUIPMENT

ESTEC EUROPEAN SPACE RESEARCH & TECHNOLOGY

CENTER

ESTF ELECTRICAL SYSTEMS TEST FACILITY

ESTIF EXTENDED SYSTEMS TEST AND INTEGRATION FACILITY

ESTR ENGINEERING SCIENCE TAPE RECORDER

ETC ESTIMATE TO COMPLETE

ETE END TO END

ETF ELECTRICAL TEST FACILITY

ETR EASTERN TEST RANGE

ENGINEERING TAPE RECORDER

ETU ENGINEERING TEST UNIT

EU ENGINEERING UNIT

EXPANDER UNIT

EUV EXTREME ULTRAVIOLET

EVA EXTRAVEHICULAR ACTIVITY

EVAWG EVA WORKING GROUP

FF FAHRENHEIT

FA FOCUS AMPLIFIER

FAB FABRICATION

FACC FORD AEROSPACE COMMUNICATIONS CORP.

FAM FLIGHT ASSURANCE MANAGER

FAO FLIGHT ACTIVITY OFFICER

FAR FLIGHT ACCEPTANCE REVIEW

FAT FACTORY ACCEPTANCE TEST

FCA FIGURE CONTROL ACTUATORS (OTA)

FCC FLAT CONDUCTOR CABLE

FDF FLIGHT DATA FILE

FLIGHT DYNAMIC FACILITY

FDI FAILURE DETECTION AND ISOLATION

FEM FINITE ELEMENT MODEL

FEP FORECAST EXPENDITURE PLAN

FES FINE ERROR SIGNAL

FLASH EVAPORATOR SYSTEM

FGE FINE GUIDANCE ELECTRONICS

FGS FINE GUIDANCE SENSOR

FINE GUIDANCE SYSTEM

FGSS FGS SYSTEM

FHST FIXED HEAD STAR TRACKER

FIFO FIRST IN, FIRST OUT

FIMS FAULT ISOLATION AND MONITORING SYSTEM

FIP FAULT ISOLATION PROCEDURE

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FIPS FEDERAL INFORMATION PROCESSING STANDARD

FITS FLEXIBLE IMAGE TRANSPORT SYSTEM

FLT FLIGHT

FM FINANCIAL MANAGER

FLIGHT MODEL

FOLDING MIRROR

FREQUENCY MODULATION

FMDA FULL MOTORIZED DOOR ASSEMBLY

FMDM FLEXIBLE MULTIPLEXER DEMULTIPLEXER

FMEA FAILURE MODE AND EFFECT ANALYSIS

FMECA FAILURE MODE EFFECTS AND CRITICALITY ANALYSIS

FO FLIGHT OPERATIONS (MOC)

FOB FIXED OPTICAL BENCH

FOC FAINT OBJECT CAMERA

FOFE FIBER OPTIC FLIGHT EQUIPMENT

FOG FIBER OPTICS GYRO

FOR FLIGHT OPERATIONS REVIEW

FORTRAN FORMULA TRANSLATION (PROGRAMMING LANGUAGE)

FOS FAINT OBJECT SPECTROGRAPH

FOSR FLEXIBLE OPTICAL SOLAR REFLECTOR

FOV FIELD OF VIEW

FPA FOCAL PLANE ASSEMBLY

FPAS FOCAL PLANE ASSEMBLY SHROUD

FPS FOCAL PLANE STRUCTURE

FPSS FOCAL PLANE STRUCTURE SIMULATOR

FPTF FOCAL PLANE TARGET FIXTURE

FQT FORMAL QUALIFICATION TEST

FR FAILURE REPORT

FRB FAILURE REVIEW BOARD

FRR FLIGHT READINESS REVIEW

FS FLIGHT SPARE

FORWARD SHELL

FSC FAIRCHILD SPACE COMPANY

FSE FLIGHT SYSTEMS ENGINEERING

FSIPE FGS SI PROTECTIVE ENCLOSURE

FSK FREQUENCY SHIFT KEYING

FSM FIRST SERVICING MISSION

FSMP FLIGHT SOFTWARE MANAGEMENT PLAN

FSS FIXED SERVICE SYSTEM

FLIGHT SUPPORT STRUCTURE

FLIGHT SUPPORT SYSTEM

FOC AUTONOMOUS SAFING SEQUENCE

FUNCTIONAL SIMULATION SYSTEM (OF S/W

DEVELOPMENT)

FSSAS FLIGHT SUPPORT SYSTEM AXIS SYSTEM

FSSC FLIGHT SYSTEMS AND SERVICING CONTRACT

FSSS FLIGHT SOFTWARE SUPPORT SYSTEM

FSU FRAME SYNCHRONIZATION UNIT

FSW FLIGHT SOFTWARE

FTA FAULT TREE ANALYSIS

FTE FULL-TIME EQUIVALENT

FTIS FUNCTION TEST INFORMATION SHEET

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FU FLIGHT UNIT

FUSE FAR ULTRAVIOLET SPECTROSCOPIC EXPLORER

FUV FAR ULTRAVIOLET

FVS FLIGHT VERIFICATION SYSTEM OR FSVS (FLIGHT S/W

VERIFICATION SYSTEM)

FWHM FULL WIDTH HALF MAXIMUM

FWM FILTER WHEEL MECHANISM

FY FISCAL YEAR

GGaAs GALLIUM ARSENIDE

G&A GENERAL AND ADMINISTRATIVE

GAMMA GUIDE STAR ASTROMETRIC MEASURING MACHINE

GAO GENERAL ACCOUNTING OFFICE

GASP GUIDE STAR ASTROMETRIC SUPPORT PACKAGE

GCM GROUND CONTROL MESSAGE

GCMR GROUND CONTROL MESSAGE REQUEST

GC/OST GROUND CONTROL/OBSERVATIONAL SEQUENCE TABLE

GDP GROUND DATA PROCESSING

GDS GOLDSTONE, CA - GSTDN TRACKING STATION

G/E GRAPHITE EPOXY

GEA GIMBAL ELECTRONICS ASSEMBLY

GEIS GENERIC EDITED INFORMATION SET

GEM GROUND EQUIPMENT MODEL

GETS GENERAL ENVIRONMENTAL TEST SPECIFICATION

GEVS GENERAL ENVIRONMENTAL VERIFICATION

SPECIFICATION

GFE GOVERNMENT FURNISHED EQUIPMENT

GFF GOVERNMENT FURNISHED FACILITIES

GFP GOVERNMENT FURNISHED PROPERTY

GFRP GLASS FIBER REINFORCED PLASTIC

GG GRAVITY GRADIENT

GGM GRAVITY GRADIENT MODE

GHRS GODDARD HIGH RESOLUTION SPECTROGRAPH

GHRS RB GHRS RELAY BOX

GHz GIGAHERTZ (109 Hz)

GISS GODDARD INSTITUTE FOR SPACE STUDIES

GIDEP GOVERNMENT INDUSTRY DATA EXCHANGE PROGRAM

GLES GODDARD LEADERSHIP EDUCATION SERIES

GMI GODDARD MANAGEMENT INSTRUCTION

GMT GREENWICH MEAN-TIME

GN GROUND NETWORK

GN2 GASEOUS NITROGEN

GO GENERAL OBSERVER

GO/AR GUEST OBSERVER/ARCHIVAL RESEARCHER

GOES GEOSTATIONARY OPERATIONAL ENVIRONMENTAL

SATELLITE

GOSB GENERAL OBSERVER SUPPORT BRANCH (OF ST ScI)

GOWG GROUND OPERATIONS WORKING GROUP

GPC GYRO PULSE COUNT

GPCOE GENERAL PURPOSE CHECKOUT EQUIPMENT

GRD GROUND

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GRO GAMMA RAY OBSERVATORY

GRU GROUND REPLACEABLE UNIT

GS GUIDE STAR

GSA GENERAL SERVICES ADMINISTRATION

GSACQ GUIDE STAR ACQUISITION WORKING GROUP

GSAT GROUND SYSTEM ACCEPTANCE TEST

GSC GUIDE STAR CATALOG

GSD GUIDE STAR DETERMINATION

GSE GROUND SUPPORT EQUIPMENT

GROUND SYSTEMS ENGINEERING (MOC)

GSFC GODDARD SPACE FLIGHT CENTER (GREENBELT, MD)

GSI GOVERNMENT SOURCE INSPECTION

GSMO GROUND SYSTEMS MANAGEMENT OFFICE

GSO GROUND SYSTEMS AND OPERATIONS

GSOPS GUIDE STAR OPERATIONAL SYSTEM

GSOWG GROUND SYSTEMS AND OPERATIONS WORKING GROUP

GSP GOVERNMENT SPECIFIED PURCHASE

GSPR GUIDE STAR SPACE PROBLEM REPORTS

GSRP GROUND SAFETY REVIEW PANEL

GSS GICHNER SHELTER SYSTEMS

GSSS GUIDE STAR SELECTION SYSTEM

GST GROUND SYSTEM TEST

GSTDN GROUND SYSTEM TRACKING AND DATA NETWORK

GSTV GROUND SYSTEM THERMAL VACUUM

GTDS GODDARD TRAJECTORY DETERMINATION SYSTEM

GTO GUARANTEED TIME OBSERVERS

GUS GODDARD UPPER STAGE

HHA HOUR ANGLE

HAR HST ANOMALY REPORT

HARP HUBBLE ABERRATION RECOVERY PROGRAM

HCI HARDWARE COMPUTER INTERFACE

HDA HUBBLE DATA ARCHIVE

HDIS HST DIGITAL IMAGING SYSTEM

HDOS HUGHES DANBURY OPTICAL SYSTEMS

HDT HIGH DENSITY TAPE

HEPA HIGH EFFICIENCY PARTICULATE AIR

HFMS HIGH FIDELITY MECHANICAL SIMULATOR

HFR HIGH FOCAL RATIO MODE

Hg MERCURY

HGA HIGH GAIN ANTENNA

HGAS HIGH GAIN ANTENNA SYSTEM

HGBU HIGH GYRO BIAS UPDATES

HRC HIGH RESOLUTION CAMERA

HIMS HUBBLE IMAGING MICHAELSON SPECTROMETER

HIP HARDWARE INTERFACE PROCESSOR

HIPPARCOS HIGH PROCESSOR PARALLAX COLLECTING SATELLITE

HIRIS HIGH RESOLUTION IMAGING SPECTROMETER

HIS HST INSTRUMENT SERVICING

HITAR HST INTEGRATION & TEST ANOMALY REPORT

HLCL HIGH LEVEL COMMAND LANGUAGE

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HLD HIGH LEVEL DISCRETE (COMMAND TYPE)

HOB HIGH-ORDER BIT

HIGH-ORDER BYTE

HOL HIGHER ORDER LANGUAGE

HOMS HUBBLE OPTICAL MECHANICAL SIMULATOR

HOST HST ORBITAL SYSTEMS TEST

HQ NASA HEADQUARTERS

HP HEATPIPE

HIGH POWER

HPHX HEAT PIPE HEAT EXCHANGER

HR HAZARD REPORT

HRA HIGH RESOLUTION APODIZER

HRC HIGH RESOLUTION CAMERA

HRG HEMISPHERICAL RESONATOR GYRO

HRS HIGH RATE SWITCH

HIGH RESOLUTION SPECTROGRAPH

HRTV HUMAN RATED THERMAL VACUUM

HSA HIGH SPEED ARITHMETIC (PACKAGE)

HSDMC HIGH SPEED DIRECT MULTIPLEX CONTROL

HSIF HARDWARE SOFTWARE INTEGRATION FACILITY

HSP HIGH SPEED PHOTOMETER

HST HUBBLE SPACE TELESCOPE

HSTAR HST ANOMALY REPORT

HSTOMS HUBBLE SPACE TELESCOPE OBSERVATORY

MANAGEMENT SYSTEM

HSTP HUBBLE SPACE TELESCOPE PROJECT

HSTP-G HUBBLE SPACE TELESCOPE PROJECT - GODDARD

HUT HOPKINS ULTRAVIOLET TELESCOPE

HV HIGH VOLTAGE

HVPS HIGH VOLTAGE POWER SUPPLY

H/W HARDWARE

Hz HERTZ (CYCLES PER SECOND)

II (CH) IN-PHASE (CHANNEL)

IBM INTERNATIONAL BUSINESS MACHINES CORPORATION

I & C INSTRUMENTATION & COMMUNICATIONS (SUBSYSTEM)

IC INTEGRATED CIRCUIT

ICCD INTENSIFIED CHARGE COUPLED DEVICE

ICD INTERFACE CONTROL DOCUMENT

ICS INTEGRATION CONTROL SEQUENCER

INTERPRETIVE COMPUTER SIMULATION

INSTRUMENTATION AND COMMUNICATIONS SUBSYSTEM

ICU INSTRUMENTATION CONTROL UNIT

ID IDENTIFICATION

IDB INFORMATION DATABASE

INTERNAL DATA BUS

IDL INTERACTIVE DATA LANGUAGE

IDS IMAGE DISSECTION SYSTEM (WAVEFRONT SENSOR)

IDT IMAGE DISSECTOR TUBE

INSTRUMENT DEVELOPMENT TEAM

INVESTIGATION DEFINITION TEAM

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IEEE INSTITUTE OF ELECTRICAL AND ELECTRONIC ENGINEERS

IEHT INTENSIFIER ELECTRICAL HIGH TENSION

I/F INTERFACE

IF INTERMEDIATE FREQUENCY

IFA INSTITUTE FOR ASTRONOMY

IFOV INSTANTANEOUS FIELD OF VIEW

IFWG INTERFACE WORKING GROUP

IST INSTRUMENT SCIENCE TEAM

I&T INTEGRATION AND TEST

I2L INTEGRATED INJECTION LOGIC

ILC INTERMEDIATE LOAD CYCLE

IMC IMAGE MOTION COMPENSATION

IMU INERTIAL MEASUREMENT UNIT

I/O INPUT/OUTPUT

IOC INTERIM OPERATIONAL CAPABILITY

IOU INPUT OUTPUT UNIT

IPAC INFRARED PROCESSING AND ANALYSIS CENTER

IPD INFORMATION PROCESSING DIVISION

IPF IMAGE PROCESSING FACILITY

ips INCHES PER SECOND

IPT INTEGRATED PRODUCT TEAM

IQL INTERACTIVE QUERY LANGUAGE

IR INFRARED

IRAC INTERDEPARTMENTAL RADIO ADVISORY COMMITTEE

INTERNATIONAL RADIO ADVISORY COMMITTEE

INFRARED IMAGING CAMERA

IRAF IMAGE REDUCTION ANALYSIS FACILITY

IRD INTERFACE REQUIREMENTS DOCUMENT

IRIS ITALIAN RESEARCH INTERIM STAGE

IRN INTERFACE REVISION NOTICE

ISO INTERNATION STANDARDS ORGANIZATION

ISS INDIVIDUAL SAFING SEQUENCE

INTERNATIONAL SPACE STATION

IST INSTRUMENT SCIENCE TEAM

I & T INTEGRATION AND TEST

ITAR INTERNATIONAL TRAFFIC IN ARMS REGULATION

ITAV INDEPENDENT TEST AND VERIFICATION PLAN

ITE INSTRUMENT TEST ENGINEER

ITF INTENSITY TRANSFER FUNCTION

IU INTERFACE UNIT

IUE INTERNATIONAL ULTRAVIOLET EXPLORER

IVA INTRA-VEHICULAR ACTIVITY

IVE INTERFACE VERIFICATION EQUIPMENT

IVT INTERFACE VERIFICATION TEST

INDEPENDENT VERIFICATION TEAM

IWG INTERFACE WORKING GROUP

JJBOX JUNCTION BOX

JHU JOHNS HOPKINS UNIVERSITY

JI JOB INSTRUCTION

JIS JOINT INTEGRATED SIMULATION

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JISWG JOINT INTEGRATION SIMULATION WORKING GROUP

JOFOC JUSTIFICATION FOR OTHER THAN FULL AND OPEN

COMPETITION

JOIP JOINT OPERATIONS INTERFACE PROCEDURE

JON JOB ORDER NUMBER

JPA JOB PACKAGE AUTHORIZATION

JPL JET PROPULSION LABORATORY

JSC JOHNSON SPACE CENTER

k KILO (103)

K THOUSAND

KA KEEP ALIVE

Kbps KILOBITS PER SECOND (103 BPS)

K-BAND 10.90 TO 36.00 GHz

Kbytes KILOBYTES

kg KILOGRAM

KHz KILOHERTZ

km KILOMETER

KMI KENNEDY SPACE CENTER MANAGEMENT INSTRUCTION

KOPS THOUSANDS OF OPERATIONS PER SECOND

KSA K-BAND SINGLE ACCESS

KSC KENNEDY SPACE CENTER

KU-BAND 15.35 TO 17.25 GHz

LLAC LOCKHEED AIRCRAFT CORPORATION

LAN LOCAL AREA NETWORK

LAPSS LARGE AREA PULSED SOLAR SIMULATOR

LaRC LANGLEY RESEARCH CENTER

LAS LAB. ASTROPHS. SPATIAL

LB POUND

LC LAUNCH COMPLEX

LCC LAUNCH CONTROL CENTER (KSC)

LCH LAUNCH

LCS LOAD CARRYING STRUCTURE

LCSA LOAD CARRYING STRUCTURE ASSEMBLY

LDC LOT DATE CODE

LED LIGHT EMITTING DIODE

LEO LOW EARTH ORBITING

LeRC LEWIS RESEARCH CENTER

LFFT LONG FORM FUNCTIONAL TEST

LGA LOW GAIN ANTENNA

LGBU LOW GYRO BIAS UPDATES

LHCP LEFT HAND CIRCULAR POLARIZATION

LIDAR LIGHT DETECTION AND RANGING INSTRUMENT

LiF LITHIUM FLUORIDE

LIS LOAD ISOLATION SYSTEM

LLD LOW LEVEL DISCRETE (COMMAND TYPE)

LLP LOW LEVEL POSITIONER

LLTV LOW-LIGHT LEVEL TV

LM LINE MONITOR

LMD LOGISTICS MANAGEMENT DIVISION

LMMS LOCKHEED MARTIN MISSILES AND SPACE

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LMSC LOCKHEED MISSILES AND SPACE COMPANY

LMSI LASER MAGNETIC STORAGE INCORPORATED

LMTO LOCKHEED MARTIN TECHNICAL OPERATIONS

LMU LOGICAL MEMORY UNIT

LO LOCAL OSCILLATOR

LOB LOW-ORDER BIT

LOW-ORDER BYTE

LOC LINES OF CODE

LOD LETTER OF DELEGATION

LOE LEVEL OF EFFORT

LOO LOG OF OPERATIONS

LOPE LARGE ORBITAL REPLACEMENT UNIT PROTECTIVE

ENCLOSURE

LOR LINE OUTAGE RECORDER (NGT, WHITE SANDS)

LOS LINE OF SIGHT

LOSS OF SIGNAL

LOTTS LONG TERM TRENDING SYSTEM

LP LINE PRINTER

LPM LINES PER MINUTE

LPS LAUNCH PROCESSING SYSTEM

LAUNCH PHASE SIMULATOR

LRD LAUNCH READINESS DATE

LRR LAUNCH READINESS REVIEW

LRS LOW RATE SWITCH

LS LIGHT SHIELD

LSB LEAST SIGNIFICANT BIT

LEAST SIGNIFICANT BYTE

LSIP LAUNCH SITE IMPLEMENTATION PLAN

LSSP LAUNCH SITE SAFETY PLAN

LAUNCH SITE SUPPORT PLAN

LSSW LAUNCH SITE SOFTWARE

LTU LINE TEST UNIT

LVDT LINEAR VARIABLE DIFFERENTIAL TRANSFORMER

LVPS LOW VOLTAGE POWER SUPPLY

Mm METER

MICROMETER (10.6 BPS)

MILLION

MA MULTIPLE ACCESS (TDRSS COMMUNICATIONS MODE)

MAD MADRID, SPAIN, GSTDN TRACKING STATION

MAMA MULTI-ANODE MICROCHANNEL ARRAY

MAPS MAGNETOMETER POINTING SYSTEM

MASIS MONITOR & SCIENCE INSTRUMENT SIMULATOR

MAT MULTIPLE ACCESS TRANSPONDER

Mbps MEGABITS PER SECOND (10 6 BPS)

MCC MISSION CONTROL CENTER

MANAGEMENT CONFERENCE CENTER

MCC-H MISSION CONTROL CENTER (JSC, HOUSTON)

MCDS MULTI-FUNCTION CRT DISPLAY SYSTEM

MCE MONITOR AND CONTROL ELECTRONICS

MCH MEMORY AND COMMAND HANDLER

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MCP MICRO-CHANNEL PLATE

MCU MESSAGE CONTROL UNIT

MECHANISMS CONTROL UNIT

MICRO CONTROLLER UNIT

MDAC McDONNELL DOUGLAS AEROSPACE COMPANY

MDB MULTIPLEXED DATA BUS

MDE MECHANICAL DRIVE ELECTRONICS

MECHANISMS DRIVE ELECTRONICS

MDM MULTIPLEXER-DEMULTIPLEXER

M&DO MISSION AND DATA OPERATIONS

M&DOD MISSION AND DATA OPERATIONS DIRECTORATE

MDS MICROPROCESSOR DEVELOPMENT SYSTEM

ME MINIMUM ENERGY

MEB MAIN ELECTRONICS BOX

MEC MANAGEMENT EDUCATION CENTER

MEP MANAGEMENT EDUCATION PROGRAM

MET MISSION ELAPSED TIME

Metsat METEOROLOGICAL SATELLITES

MF MAJOR FRAME

MINOR FRAME

MFR MANIPULATOR FOOT RESTRAINT

MgF2 MAGNESIUM FLUORIDE

MGSE MECHANICAL GROUND SUPPORT EQUIPMENT

MGSS MECHANICAL GROUND SUPPORT SYSTEM

MHz MEGAHERTZ (106 Hz)

MICB MISSION INTEGRATION CONTROL BOARD

MICS MANAGEMENT INFORMATION AND CONTROL SYSTEM

MIDEX MIDDLE EXPLORER

MIL MERRITT ISLAND, FLORIDA, STDN STATION

MILA MERRITT ISLAND LAUNCH AREA (FLORIDA STDN

STATION)

MILC MODIFIED INTERMEDIATE LOAD CYCLE

MIL-STD MILITARY STANDARD

MIMS MISSION INFORMATION MANAGEMENT SYSTEM

min MINUTE

MIT MASSACHUSETTS INSTITUTE OF TECHNOLOGY

MULTIPLE INSTRUMENT TEST

ML MEMORY LOAD

MLA MONOCHROME LENS ASSEMBLY

MLB MULTILAYER BOARD

MLC MEMORY LOAD COMMAND

MLI MULTILAYER INSULATION

MLT MULTI-SETTING TORQUE LIMITER

µm MICROMETER

mm MILLIMETER

MM MEMORY MODULE

MMC MANUAL MODE COMMAND

MMDA MARTIN MARIETTA DENVER AEROSPACE

MMI MAN-MACHINE INTERFACE

MMS MULTIMISSION MODULAR SPACECRAFT

MATRA MARCONI SPACE

MMSE MULTIUSE MISSION SUPPORT EQUIPMENT

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M&O MAINTENANCE AND OPERATION

MOA MEMORANDUM OF AGREEMENT

MOAT MECHANICAL/OPTICAL ALIGNMENT TEST

MOC MISSION OPERATIONS CONTRACTOR

MISSION OPERATIONS CONTRACT

MOCR MISSION OPERATIONS CONTROL ROOM

MOD MISSION OPERATIONS DIRECTOR

MODEM MODULATOR/DEMODULATOR

MO&DSD MISSION OPERATIONS & DATA SYSTEMS DIRECTORATE

MOGS MISSION OPERATIONS GROUND SYSTEM

MOI MOMENT OF INERTIA

MOM MISSION OPERATIONS MANAGER

MOP MONTHLY OBSERVING PLAN

MOPE MULTI-MISSION ORBITAL REPLACEMENT UNIT

PROTECTIVE ENCLOSURE

MOR MISSION OPERATIONS REVIEW

MOS METAL OXIDE SEMICONDUCTOR

MOSES MISSION OPERATIONS, SYSTEM ENGINEERING,

& SOFTWARE

MOSS MISSION OPERATIONS SUPPORT SERVICES

MOVING OBJECT SCHEDULING SYSTEM

MOU MEMORANDUM OF UNDERSTANDING

M/P MANPOWER

M&P MATERIALS AND PROCESSES

MPL MASTER PROCEDURE LIST

MPO MISSION PLANNING OFFICE

MPS MULTI PROGRAM SUPPORT

MPSL MATERIALS AND PROCESSES SPECIFICATION LIST

MPSR MISSION PAYLOAD MULTIPURPOSE SUPPORT ROOM

MPT MISSION PLANNING TERMINAL

M&R MAINTENANCE AND REFURBISHMENT

MR MALFUNCTION REPORT

MRB MALFUNCTION REVIEW BOARD

MATERIAL REVIEW BOARD

MRR MISSION REQUIREMENTS REQUEST

MRS MAIN RING SIMULATOR

MRT MISSION READINESS TESTING

ms MILLISECOND (10-3 SECONDS)

MS MISSION SCHEDULE

(PASS) MISSION SCHEDULER

MSB MECHANISM SELECTION BOX

MOST SIGNIFICANT BIT

MOST SIGNIFICANT BYTE

Msec MILLISECOND (10-3 SECONDS)

MSFC MARSHALL SPACE FLIGHT CENTER

MSOCC MULTISATELLITE OPERATIONS CONTROL CENTER

MSM MODE SELECT MECHANISM

MSPSP MISSILE SYSTEMS PRELAUNCH SAFETY PACKAGE

MSR MISSION SUPPORT ROOM

MONTHLY STATUS REVIEW

MSS MAGNETIC SENSING SYSTEM

MISSIONS SCHEDULING SYSTEM

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MESSAGE SWITCH SYSTEM (NASCOM)

MSSR MISSION AND SCIENCE SCHEDULING ROOM

MSTE MECHANICAL SPECIAL TEST EQUIPMENT

MTB MAGNETIC TORQUE BAR

MTBF MEAN-TIME BEFORE FAILURE

MEAN-TIME BETWEEN FAILURES

MTE MAGNETIC TORQUE ELECTRONICS

MTF MODULATION TRANSFER FUNCTION

MTL MATERIAL

MULTISETTING TORQUE LIMITER

MTP MASTER TEST PROCEDURE

MASTER TIMING PULSE

MTR MEAN-TIME TO RESTORE

MTS MAGNETIC TORQUING SYSTEM

MTTR MEAN-TIME TO REPAIR

MTTS MEAN-TIME TO FAILURE

MU MEMORY UNIT

MUA MATERIAL USAGE AGREEMENT

MUL MATERIAL USAGE LIST

MULE MUTE-USE LIGHTWEIGHT EQUIPMENT

MURC MANPOWER UTILIZATION REVIEW COUNCIL

MUX MULTIPLEXER

MV APPARENT VISUAL MAGNITUDE

ABSOLUTE VISUAL MAGNITUDE

MVIP MICRO VIRTUAL INTERFACE PROCESSOR

MWS MINIMUM WHEEL SPEED

NN NEWTON

N/A NOT APPLICABLE

NAIF NAVIGATION ANCILLARY INFORMATION FACILITY

NAS NATIONAL ACADEMY OF SCIENCES

NASA NATIONAL AERONAUTICS AND SPACE ADMINISTRATION

NASCOM NASA COMMUNICATIONS NETWORK

NASCOP NASA COMMUNICATIONS OPERATING PROCEDURES

NBL NEUTRAL BUOYANCY LABORATORY

NBF NEUTRAL BUOYANCY FACILITY

NBS NATIONAL BUREAU OF STANDARDS

NEUTRAL BUOYANCY SIMULATOR (OR SIMULATION)

NCC NETWORK CONTROL CENTER

NICMOS CRYO-COOLER

NCCDS NETWORK CONTROL CENTER DATA SYSTEM

NCLS NICMOS COOLING LOOP SIMULATOR

NCMR NONCONFORMING MATERIAL REPORT

NCR NONCONFORMANCE REPORT

NONCOMPLIANCE REPORT

NCRS NONCONFORMANCE REPORT SUPPLEMENT

NCS NICMOS COOLING SYSTEM

NEA NOISE EQUIVALENT ANGLE

NGT NASA GROUND TERMINAL (WHITE SANDS, NEW MEXICO)

NGST NEXT GENERATION SPACE TELESCOPE

NHB NASA HANDBOOK

NICMOS NEAR INFRARED CAMERA AND MULTI-OBJECT

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SPECTROMETER

NIST NATIONAL INSTITUTE OF SCIENCE AND TECHNOLOGY

nm NANOMETERS (10-9 m)

NM NAUTICAL MILES

NEWTON METERS

NMI NASA MANAGEMENT INSTRUCTION

NMOS NETWORK AND MISSION OPS SUPPORT (CONTRACTOR)

NNSG NASCOM NETWORK SCHEDULING GROUP

NOBL NEW OUTER BLANKET LAYER

NOCC NETWORK OPERATIONS CONTROL CENTER

NOP NO OPERATION

NPE NOBL PROTECTIVE ENCLOSURE

NRC NATIONAL RESEARCH COUNCIL

NRT NEAR REAL-TIME

NRZ NON RETURN TO ZERO

NRZ-L NON RETURN TO ZERO LEVEL

NRZ-M NONRETURN TO ZERO MARK

NRZ-S NONRETURN TO ZERO SPACE

NSF NATIONAL SCIENCE FOUNDATION

NSP NASA SUPPORT PLAN

NSPAR NON-STANDARD PARTS APPROVAL REQUEST

NSPL NASA STANDARD PARTS LIST

NSSC NASA STANDARD SPACECRAFT COMPUTER

NSSC-1 NASA STANDARD SPACECRAFT COMPUTER, MODEL-1

NSTS NASA SPACE TRANSPORTATION SYSTEM (SHUTTLE)

NSWC NAVAL SURFACE WARFARE CENTER

NSSDC NATIONAL SPACE SCIENCE DATA CENTER

NTE NOT TO EXCEED

NUV NEAR ULTRA VIOLET

NVR NONVOLATILE RESIDUE

NWS NATIONAL WEATHER SERVICE

OOA OPERATIONS ASTRONOMER

OAF OPTICAL ALIGNMENT FACILITY

OAO OAO CORPORATION

ORBITING ASTRONOMICAL OBSERVATORY

OAST OFFICE OF AERONAUTICS AND SPACE TECHNOLOGY

OB OPTICAL BENCH

OBASS OPTICAL BENCH ALIGNMENT SUPPORT STRUCTURE

OBC ON-BOARD COMPUTER

OBCTE ON-BOARD COMPUTER TEST EQUIPMENT

OBE OPTICAL BENCH ENCLOSURE

OBDH ON-BOARD DATA HANDLING

OBDHTE ON-BOARD DATA HANDLING TEST EQUIPMENT

OBDI ON-BOARD DECODER INTERFACE

OBDS ON-BOARD DECODER SIMULATOR

OBE OPTICAL BENCH ENCLOSURE

OBETC OPTICAL BENCH ENCLOSURE THERMAL CONTROL

OBP ON-BOARD PROCESSOR

OCA OPTICAL COMPANY OF AMERICA

OCC OPERATIONS CONTROL CENTER

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OCD OPERATING CONTROL DIRECTIVES

OCE OPTICAL CONTROL ELECTRONICS

OCE-EK OPTICAL CONTROL ELECTRONICS - ENHANCEMENT KIT

OCLI OPTICAL COATING LABORATORY INCORPORATED

OCS OPTICAL CONTROL SUBSYSTEM

OCXO OVEN-CONTROLLED CRYSTAL OSCILLATOR

OD OPERATIONAL DOWNLINK

OPERATIONS DIRECTOR

OPERATIONS DOWNLINK

OPTICAL DISK

ODB OPERATIONS DATABASE

ODC OTHER DIRECT COST

ODF ORBIT DETERMINATION FACILITY

ODM OPTICAL DETECTOR SUBSYSTEM

ODS OPTICAL DETECTOR SUBSYSTEM

ORBIT DETERMINATION SYSTEM

OEM ORIGINAL EQUIPMENT MANUFACTURER

OFAD OPTICAL FIELD ANGLE DISTORTION

O&GS OPERATIONS AND GROUND SYSTEMS (PROJECT)

OGSE OPTICAL GROUND SUPPORT EQUIPMENT

OHA OPERATIONS HAZARD ANALYSIS

OIG OFFICE OF INSPECTOR GENERAL

OLD OFF-LOAD DEVICE

OPERATIONS LIMITATION DOCUMENT

OLS ON-LINE SYSTEM

ORBITAL LAUNCH SERVICES

OLT OBSERVATORY LEVEL TEST

O&M OPERATIONS AND MAINTENANCE

OM OPTICAL MODEL

OPERATIONS MANAGER

OMA OPTOMECHANICAL ASSEMBLY

OMB OFFICE OF MANAGEMENT AND BUDGET

OMS ORBITAL MANEUVERING SYSTEM

OBSERVATORY MONITORING SYSTEM

ONA ON-LINE ARCHIVE

ONLS ON-LINE SYSTEM

O/O ON/OFF

OOM ON-ORBIT MAINTENANCE

OOPS ON-LINE OPERATING PLAN SYSTEM

O/P OUTPUT

OP OPERATING PROCEDURE

OPERATIONS PROCEDURES

OPD OPTICAL PATH DIFFERENCE

OPERATIONS DEPARTMENT OF ST ScI

OPE ORU PROTECTIVE ENCLOSURE

OPF ORBITER PROCESSING FACILITY

OFFICIAL PERSONNEL FILE

OPM OPERATIONS MESSAGE

OFFICE OF PERSONNEL MANAGEMENT

OPO OPERATIONS ORDER

OFFICE OF PUBLIC OUTREACH

OPS OPERATIONS

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OPUS OSS-PODPS UNIFIED SYSTEM

OR OPERATIONS ROOM

ORA OPTICAL RESEARCH ASSOCIATES

ORD OPERATIONS REQUIREMENTS DOCUMENT

ORI ORBITAL REPLACEMENT INSTRUMENT

ORI INCORPORATED

ORM OPTICAL REFERENCE MEASUREMENT

ORR OPERATION READINESS REVIEW

ORRORAL VALLEY, AUSTRALIA GSTDN TRACKING STATION

ORU ORBITAL REPLACEMENT UNIT

ORUC ORU CARRIER

OS OPERATING SYSTEM

OSC ORBITAL SCIENCE CORPORATION

OSL OTA SIMULATOR BUILT BY LAS (MARSEILLES)

OSHA OCCUPATIONAL SAFETY AND HEALTH ACT

OSM OPTICAL SELECTOR MECHANISM

OSRS ORBITAL STRUCTURAL REFERENCE SYSTEM

OSS OFFICE OF SPACE SCIENCES

OSSA OFFICE OF SPACE SCIENCE AND APPLICATIONS

OST OBSERVATIONAL SEQUENCE TABLE

OSTDS OFFICE OF SPACE TRACKING AND DATA SYSTEMS

OSTS OFFICE OF SPACE TRANSPORTATION SYSTEMS

OSU OPTICAL STIMULATION UNIT

OTA OPTICAL TELESCOPE ASSEMBLY

OTAS OPTICAL TELESCOPE ASSEMBLY SIMULATOR

OTDA OFFICE OF TRACKING AND DATA ACQUISITION

OTP OFF-LINE PROCESSOR

OV ORBITAL VERIFICATION

OBSERVATORY VERIFICATION

OWS OPTICAL WITNESS SAMPLE

PPA PERFORMANCE ASSURANCE

PRODUCT ASSURANCE

PACOR-II PACKET PROCESSOR

PAD PULSE AMPLITUDE DISCRIMINATOR

PAE PERFORMANCE ASSURANCE ENGINEER

PAIP PERFORMANCE ASSURANCE IMPLEMENTATION PLAN

PAL PROGRAMMABLE ARRAY LOGIC

PAMPL PROGRAM APPROVED MATERIALS & PROCESSES

SELECTION LIST

PAO PUBLIC AFFAIRS OFFICE

PAP PERFORMANCE ASSURANCE PLAN

PERFORMANCE ASSURANCE PROCEDURES

PAYLOAD ATTACH PLATE

PAPL PROGRAM APPROVED PARTS LIST

PAR PERFORMANCE ASSURANCE REQUIREMENTS

PERSONNEL ACTION REQUEST

PASDE PHOTOGRAMETRIC APPENDAGE STRUCTURAL

DYNAMICS EXPERIMENT

PASS POCC APPLICATIONS SOFTWARE SUPPORT

PASSOPS POCC APPLICATIONS SOFTWARE SUPPORT OPERATIONS

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PAVDO PHOTO AND VIDEO DOCUMENTATION OFFICE

P/B PLAYBACK

PBS POWER BUS SIMULATOR

PC PLANETARY CAMERA

PULSE COMMAND

PERSONAL COMPUTER

P-C PERFORMANCE-COST

PCA PROPORTIONAL COUNTER ARRAY

PCB PRINTED CIRCUIT BOARD

PCD PHOTON COUNTING DETECTOR

PCE POWER CONVERSION ELECTRONICS

PCDS POWER CONVERTOR AND DISTRIBUTION SYSTEM

PCDU POWER CONTROL AND DISTRIBUTION UNIT

PCEA POINTING CONTROL ELECTRONICS ASSEMBLY

PCL PARALLEL COMMUNICATIONS LINKS

PCM POWER CONTROL MODULE

PULSE CODE MODULATION

PCN PROJECT CONTROL NUMBER

PROCUREMENT CONTROL NUMBER

PCR PAYLOAD CHANGEOUT ROOM

PCS POINTING CONTROL SUBSYSTEM

POINTING CONTROL SYSTEM

PCSIU PCS INTERFACE UNIT

PCU POWER CONTROL UNIT

PD POSITION DESCRIPTION

POWER DISTRIBUTION

PDA PHOTON DETECTOR ASSEMBLY

PERCENTAGE OF DEFECTIVES ALLOWABLE

PDB PROJECT DATABASE

PDI PAYLOAD DATA INTERLEAVER

PDL PROGRAM DESIGN LANGUAGE

PDM PRIMARY DEPLOYMENT MECHANISM (SOLAR ARRAY)

PRIMARY DRIVE MOTOR

PDMP PROJECT DATA MANAGEMENT PLAN

PDPF PACKET DATA PROCESSING FACILITY

PDR PRELIMINARY DESIGN REVIEW

PDSU POWER DISTRIBUTION AND SWITCHING UNIT

POWER DISTRIBUTION SERVICING UNIT

PDT PERFORMANCE DEMONSTRATION TEST

PDU POWER DISTRIBUTION UNIT

P-E PERKIN-ELMER CORPORATION

PEB PERFORMANCE EVALUATION BOARD

PED PLATFORM EQUIPMENT DECK

PEP PROPOSAL ENTRY PROCESSOR

PER PRE ENVIRONMENTAL REVIEW

PERR PRE-ENVIRONMENTAL READINESS REVIEW

PEU PERIPHERAL ELECTRONICS UNIT

PFR PRIME FOCAL RATIO

PORTABLE FOOT RESTRAINT

PFM PROTO-FLIGHT MODEL

PFU PROTOFLIGHT UNIT

PGHM PAYLOAD GROUND HANDLING MECHANISMS

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PGT PISTOL GRIP TOOL

PHA PULSE HEIGHT ANALYSIS

PHSF PAYLOAD HAZARDOUS SERVICING FACILITY

PI PRINCIPAL INVESTIGATOR

PAYLOAD INTERROGATOR (ORBITER)

PIDA PAYLOAD INSTALLATION AND DEPLOYMENT AID

PIF PAYLOAD INTEGRATION FACILITY

PIL PARTS IDENTIFICATION LIST

PIMR PASSIVE IMAGING MICROWAVE RADIOMETER

PIND PARTICLE IMPACT NOISE DETECTION

PIO PROVISIONING ITEM ORDER

PIP PAYLOAD INTEGRATION PLAN

PROFESSIONAL INTERN PROGRAM

PIRN PRELIMINARY INTERFACE REVISION NOTICE

PIT POST INSTALLATION TEST

PROCESSOR INTERFACE TABLE

PIXEL PICTURE ELEMENT

PKG PACKAGE

PL PAYLOAD

PLAT PRELAUNCH ACCEPTANCE TEST

PLB PAYLOAD BAY

PLBD PAYLOAD BAY DOOR

PLC PRELIMINARY LOAD CYCLE

PLCP PLANNING COMMAND POOL

PLL PHASED LOCK LOOP

PLOP PAYLOAD OPERATIONS PROCEDURE

PM PRIMARY MIRROR

PROJECT MANAGER

PREVENTATIVE MAINTENANCE

PAYLOAD MODULE

PMA PERMANENT MAGNET ASSEMBLY

PMB PERSONNEL MANAGEMENT BRANCH

PMC PRIME MISSION CONTRACT/CONTRACTOR

PMDB PROJECT MANAGEMENT DATA BASE

PMDE PROJECT MANAGEMENT DEVELOPMENT EMPRISE

PME PERSONNEL MANAGEMENT EVALUATION

PMFA PERMANENT MAGNET FOCUS ASSEMBLY

PMIS PROJECT MANAGEMENT INFORMATION SYSTEM

PMMR PROJECT MANAGERS' MONTHLY REVIEW

PMPE PROGRAM MATERIALS AND PROCESSES ENGINEER

PMR PROGRAM MANAGEMENT REPORT/REVIEW

PMRS PERFORMANCE MANAGEMENT AND RECOGNITION

SYSTEM

PMS PERFORMANCE MEASUREMENT SYSTEM

PERSONNEL MANAGEMENT SPECIALIST

PMT PHOTOMULTIPLIER TUBE

PN PSEUDORANDOM NOISE

PO PICK OFF

POCC PAYLOAD OPERATIONS CONTROL CENTER

PROJECT OPERATIONS CONTROL CENTER

POD PROJECT OPERATIONS DIRECTOR

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PODPS POST OBSERVATION DATA PROCESSING SYSTEM

POM PICK OFF MIRROR (WFPC)

POMC PICK OFF MIRROR COVER (WFPC)

POMD PLANT OPERATIONS AND MAINTENANCE DIVISION

POMM PICK OFF MIRROR MECHANISM (WFPC2)

POP PROGRAM OPERATING PLAN

PORTS PRELIMINARY OPERATIONS RQMTS. TEST SUPPORT

POCC OPERATIONS REAL-TIME SUPPORT

POWG PAYLOAD OPERATIONS WORKING GROUP

P-P PEAK-TO-PEAK

PPCU PORT POWER CONDITIONING UNIT

PPF PAYLOAD PROCESSING FACILITY

PPL PREFERRED PARTS LIST

PPP PROJECTED PROMOTION POTENTIAL

PPU PREPRODUCTION UNIT

PQT PRELIMINARY QUALIFICATION TEST

PR PROBLEM REPORT

PROCUREMENT REQUEST

PRCS PRIMARY REACTION CONTROL SYSTEM

PRD PROGRAM REQUIREMENTS DOCUMENT

PRJU POWER REGULATOR JUNCTION UNIT

PRL PROGRAM REQUIREMENTS LOGIC

PULSE REBALANCE LOOP

PROM PROGRAMMABLE READ ONLY MEMORY

PRR PRELIMINARY REQUIREMENTS REVIEW

PRS PAYLOAD RETENTION SYSTEM

PORTS REFURBISHMENT SYSTEM

PRT PLATINUM RESISTANCE THERMOMETERS

POWER RATCHET TOOL

PS PAYLOAD STATION

POWER SUPPLY

PSAT PREDICTED SITE ACQUISITION TABLE

PSCN PROPOSED SPECIFICATION CHANGE NOTICE

PSD POWER SPECTRAL DENSITY

PSDU POWER SWITCHING AND DISTRIBUTION UNITS

PSEA POINTING AND SAFEMODE ELECTRONICS ASSEMBLY

PAYLOAD SAFING AND ELECTRONICS ASSEMBLY

PSF POINT SPREAD FUNCTION

PSI POUNDS PER SQUARE INCH

PSK PHASE SHIFT KEYING

PSM PROJECT SUPPORT MANAGER

PROJECT SAFETY MANAGER

PSP PAYLOAD SIGNAL PROCESSOR

PSR PRESHIP REVIEW

PROJECT STATUS REVIEW

PSRP PAYLAOD SAFETY REVIEW PANEL

PSS PAYLOAD SAFING SEQUENCE

PORTABLE SPACECRAFT SIMULATOR

PSSR PRELIMINARY SYSTEM REQUIREMENTS REVIEW

PSTOL PORTS SYSTEM TEST & OPERATION LANGUAGE`

PTF PAYLOAD TEST FACILITY

PTO PATENT AND TRADEMARK OFFICE

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PTR PROGRAM TROUBLE REPORT

PU PROTOTYPE UNIT

PWA PROJECT WORK AUTHORIZATION

PRINTED WIRING ASSEMBLY

PWB PRINTED WIRING BOARD

PWLA PORTABLE WORK LIGHT ASSEMBLY

PWM PULSE WIDTH MODULATED

PWR POWER

PY PRIOR YEAR

QQ (CH) QUADRATURE PHASE (CHANNEL)

QA QUALITY ASSURANCE

QAP QUALIFICATION AND ACCEPTANCE PROGRAM

QAT QUALIFICATION ACCEPTANCE TEST

QC QUALITY CONTROL

QCM QUARTZ CRYSTAL MICROBALANCE

QE QUALITY ENGINEER (ING)

QUANTUM EFFICIENCY

QEH QUANTUM EFFICIENCY HYSTERESIS

QFM QUALIFICATION FLIGHT MODEL

Q&I QUADRATURE PHASE AND IN PHASE (CHANNEL)

QM QUALIFICATION MODEL

QPAF QUARTER PANEL ALIGNMENT FIXTURE

QPSK QUADRATURE PHASE SHIFT KEYING

QSO QUASI-STELLAR OBJECT

QUEEN QUICK UPLINK, EXPANDABLE EXECUTIVE FOR THE NSSC-1

RRA RIGHT ASCENSION

RAC RIGID ARRAY CARRIER

RAM RANDOM ACCESS MEMORY

RAS REFRACTIVE ABERRATED SIMULATOR

RAS/CAL REFRACTIVE ABERRATED SIMULATOR/CALIBRATOR

RBM RADIAL BAY MODULE

RCAF RAIL CONNECTOR AND ALIGNMENT FIXTURE

RCN REQUIREMENTS CHANGE NOTICE

RCS REACTION CONTROL SYSTEM

RCS/VCS REACTION CONTROL SYSTEM/VERNIER CONTROL SYSTEM

R&D RESEARCH AND DEVELOPMENT

RECP RECORD ENGINEERING CHANGE PROPOSAL

REE RESPONSIBLE EQUIPMENT ENGINEER

REV REVOLUTION

REX REMOTE INTERFACE UNIT EXERCISER

RF RADIO FREQUENCY

RFA REQUEST FOR ACTION

RFI RADIO FREQUENCY INTERFERENCE

REM REFOCUSSING MECHANISM

RFP REQUEST FOR PROPOSAL

RGA RATE GYRO ASSEMBLY

RESIDUAL GAS ANALYSIS

RESIDUAL GAS ANALYZER

RGB RED, GREEN, BLUE

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RH RELATIVE HUMIDITY

RHCP RIGHT HAND CIRCULAR POLARIZATION

R&I RECEIVING AND INSPECTION

RIAF RADIAL INSTRUMENT ALIGNMENT FIXTURE (WFPC)

RID REVIEW ITEM DISCREPANCY

REVIEW ITEM DISPOSITION

RIG RATE INTEGRATING GYRO

RIU REMOTE INTERFACE UNIT

RK REPAIR KIT

RM REMOTE MODULE

RESOURCES MONITOR

RETRIEVAL MODE

RMEA RETRIEVAL MODE ELECTRONICS ASSEMBLY

RMGA RETRIEVAL MODE GYRO ASSEMBLY

RMO RETRIEVAL MODE OPERATIONS

RESOURCES MANAGEMENT OFFICE

RM&QA RELIABILITY, MAINTAINABILITY AND QUALITY ASSURANCE

RM/S RESOURCES MONITOR/SCHEDULER

RMS REMOTE MANIPULATOR SYSTEM

ROOT-MEAN SQUARED

RMSS REMOTE MANIPULATOR SYSTEM SIMULATOR

ROM READ-ONLY MEMORY

ROTSE ROBOTIC OPTICAL TRANSIENT SEARCH EXPERIMENT

RPSS REMOTE PROPOSAL SUPPORT SYSTEM

R&QA RELIABILITY AND QUALITY ASSURANCE

RQMT REQUIREMENT

R&RR RANGE AND RANGE RATE

RS REED-SOLOMON ERROR CORRECTION ENCODING

RSB RESEARCH SUPPORT BRANCH OF ST ScI

R&SFP RESEARCH AND STUDY FELLOWSHIP PROGRAM

RSN REMODE SERVICES NODE

RSR RESOURCES STATUS REPORT

RSIPE RADIAL SCIENCE INSTRUMENT PROTECTIVE ENCLOSURE

RSS RESOURCES STATUS REVIEW

ROTATING SERVICE STRUCTURE

ROOT-SUM SQUARED

RSU RATE SENSOR UNIT

REMOTE SENSING UNIT

R/T REAL-TIME

RTC REAL-TIME COMMAND

RTCS RELATIVE TIME COMMAND SEQUENCE

RTN RETURN

RTOP RESEARCH AND TECHNOLOGY OPERATING PLAN

RTP RELATIVE TIME PROCESSOR

RTU REMOTE TERMINAL UNIT

RTUTE REMOTE TERMINAL UNIT TEST EQUIPMENT

RU REMOTE UNIT

RW REACTION WHEEL

RWA REACTION WHEEL ASSEMBLY

RZ RETURN TO ZERO

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SSA SINGLE ACCESS (TDRSS COMMUNICATIONS MODE)

SOLAR ARRAY

SA-I SOLAR ARRAY-I

SA-II SOLAR ARRAY-II

SA-III SOLAR ARRAY-III

SAA SOUTH ATLANTIC ANOMALY

SAC SECOND AXIAL CARRIER

SADA SOLAR ARRAY DRIVE ASSEMBLY

SADE SOLAR ARRAY DRIVE ELECTRONICS

SADM SOLAR ARRAY DRIVE MECHANISM

SAF SPACECRAFT ASSEMBLY FACILITY

SAGA SOLAR ARRAY GAIN AUGMENTATION

SAM SMALL ANGLE MANEUVER

SAMS SUPPORT AND MAINTENANCE SYSTEM

SPACE ACCELERATION MEASUREMENT SYSTEM

SASCOE SOLAR ARRAY SPECIAL CHECKOUT EQUIPMENT

SAR SCHEDULE ADD REQUESTS

SAR SYNTHETIC APERTURE RADAR

SATS SUPPLY ACCESS TERMINAL SYSTEM

S-BAND 1500 - 5200 Mhz

SBC SOLAR BLIND CHANNEL

SBMB SUPERVISORY BUS MONITOR BUFFER

SBUV SOLAR BACKSCATTER ULTRAVIOLET SPECTRAL

S/C SPACECRAFT

SC SCIENCE

SYSTEM CONTROLLER

SCA SPACECRAFT CHECKOUT AREA (GSFC BLDG. 7, RM. 108)

SUBCONTRACT AWARD

S/C ADD SPACECRAFT ADDRESS

SCAMA SWITCHING, CONFERENCING & MONITORING

ARRANGEMENT

SCCER SYSTEM COMMAND AND CONTROL EQUIPMENT RACK

SC&CU SIGNAL CONDITIONING AND CONTROL UNIT

SCD SOURCE CONTROL DOCUMENT

SCDP SAFETY COMPLIANCE DATA PACKAGE

SCE SELECTIVE COMMUNICATION EQUIPMENT

SCN SPECIFICATION CHANGE NOTICE

SCP STORED COMMAND PROCESSOR

SCR SCHEDULE CONFIRMATION REQUEST (NCC)

STRIP CHART RECORDER

SOFTWARE CHANGE REQUEST

SCS SATELLITE CONTROL SECTION

SCIENCE COMMANDING SYSTEM

SD SCIENCE DATA

SOFTWARE DEVELOPMENT

SDAB (see STFSDB)

SDAS SCIENCE DATA ANALYSIS SOFTWARE

SDD SOFTWARE DESIGN DOCUMENT

SDF SCIENCE DATA FORMATTER

SDH STANDARD DATA HEADER

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SDI SCIENCE DATA INTERFACE

SDIP SOGS/DADS INTERFACE PROCESSOR

SDM SECONDARY DEPLOYMENT MECHANISM

SDN SCHEDULE DELETION NOTIFICATION

(NCC--MPT MESSAGE)

SDP SAFETY DATA PACKAGE

SCIENCE DATA PROCESSING

SDPC SCIENCE DATA PROCESSING COMPUTER

SDPF SCIENCE DATA PROCESSING FACILITY

SDR SOFTWARE DISCREPANCY REPORT

SDS SCIENCE DATA STORE

SDTV STRUCTURAL DYNAMICS TEST VEHICLE

SDU SIGNAL DISTRIBUTION UNIT

SE SYSTEMS ENGINEERING

SYSTEMS ENGINEER

SEA SUPPORT ELECTRONICS ASSEMBLY

SEB SOURCE EVALUATION BOARD

SYSTEMS ENGINEERING BOARD

sec SECONDS

SEC SECANT

SECONDARY ELECTRON CONDUCTION

SECO SECONDARY ELECTRON CONDUCTION ORTHICON

SEER SYSTEMS ENGINEERING AND EVALUATION ROOM

SEID SYSTEMS ENGINEERING AND INTEGRATION DIVISION

SEM SCANNING ELECTRON MICROSCOPE

SCANNING ELECTRONIC MICROSCOPIC

SEP SYSTEMS ENGINEERING PLAN

SER SYSTEMS ENGINEERING REPORT

SES SENIOR EXECUTIVE SERVICE

SPACE ENVIRONMENT SIMULATOR

SUPPORT ELECTRONICS SECTION

SEWP SCIENTIFIC AND ENGINEERING WORKSTATION

PROCUREMENT

SEU SINGLE EVENT UPSETS

SFFT SHORT FORM FUNCTIONAL TEST

SFT SHORT FUNCTIONAL TEST

SHARP SUMMER HIGH SCHOOL APPRENTICE RESEARCH

PROGRAM

SHEAL SHUTTLE HIGH ENERGY ASTROPHYSICS LABORATORY

SHM SHUTTER MECHANISM

SHO SCHEDULE SERVICE ORDER

SHOOT SUPERFLUID HELIUM ON-ORBIT TRANSFER

SHP STANDARD HEADER PACKET

SI SCIENCE INSTRUMENT

SCIENTIFIC INSTRUMENT

SIC SPACECRAFT IDENTIFICATION CODE (NCC SCHEDULING)

SICADS SI CONTROL AND DATA SIMULATOR SYSTEMS

SI C&DH SI CONTROL AND DATA HANDLING (SUBSYSTEM)

SI COMMAND AND DATA HANDLING

SIF SCIENTIFIC INSTRUMENT FORMATTER

SOGS INTEGRATION FACILITY

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SIFIG SCIENCE INSTRUMENT FINE GUIDANCE SYSTEM

GROUND SUPPORT EQUIPMENT

SIM SIMULATION

SIMULATOR

SIMA SMALL INCREMENTAL MOTION ACTUATOR (OTA)

SIP SHUTTLE INTERFACE PANELS

SHUTTLE INTERFACE POINT

SOGS INVOCABLE PROCEDURE

STANDARD INTERFACE PANEL

SUBSYSTEM IMPLEMENTATION PLAN

SIPE SCIENTIFIC INSTRUMENT PROTECTIVE ENCLOSURE

SI/PLSIM SI/PAYLOAD SIMULATOR

SIRB SCIENCE INTERFACE RELAY BOX

SIRD SUPPORT INSTRUMENTATION REQUIREMENTS

DOCUMENT

SIRTF SPACE INFRARED TELESCOPE FACILITY

SISD SOFTWARE AND INFORMATION SYSTEMS DIVISION

SISE SI SYSTEMS ENGINEER

SITS SCIENCE INSTRUMENT TEST SYSTEM

SIU SOGS INTERFACE UNIT

SIWG SCIENCE INSTRUMENT WORKING GROUP

SLTE SYSTEM LEVEL TEST EQUIPMENT

S&M STRUCTURES AND MECHANICAL

STRUCTURES AND MECHANICAL (SUBSYSTEM)

SM SERVICING MISSION

SERIAL MAGNITUDE

SM2 2ND SERVICING MISSION

SM3 3RD SERVICING MISSION

SM4 4TH SERVICING MISSION

SMA SECONDARY MIRROR ASSEMBLY (OTA)

SMB SYSTEMS MANAGEMENT BOARD

SMC SAFEMODE COMMAND

SERIAL MAGNITUDE COMMAND

SMDB SERVICING MISSION DATA BASE

SMEA SAFEMODE ELECTRONICS ASSEMBLY

SMEX SMALL EXPLORER

SMGT SERVICING MISSION GROUND TEST

SMIT SERVICING MISSION INTEGRATED TIMELINE

SMM SERVICING MISSION MANAGER

SMN SOFTWARE MODIFICATION NOTICE

SMOV SERVICING MISSION OBSERVATORY VERIFICATION

SMOWG SERVICING MISSION OPERATIONS WORKING GROUP

SMP SOFTWARE MANAGEMENT PLAN

SM/PART SERVICING MISSION/PLANNING AND REPLANNING TOOL

SMS SCIENCE MISSION SPECIFICATION

STRUCTURES AND MECHANISMS SUBSYSTEM

S/N SERIAL NUMBER

SNAP STRUCTURAL NETWORK ANALYSIS PROGRAM

SOAR (GSFC) SPACECRAFT ORBITAL ANOMALY REPORTING

SYSTEM

SOC SCIENCE OVERSIGHT COMMITTEE

SIMULATION OPERATIONS CENTER

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STATE-OF-CHARGE

SOCC SIMULATION OPERATIONS CONTROL CENTER

SOFA SELECTABLE OPTICAL FILTER ASSEMBLY (WFPC)

SOGS SCIENCE OPERATIONS GROUND SYSTEM

SOMA SUPPORT OPTOMECHANICAL ASSEMBLY

SOPE SMALL ORBITAL REPLACEMENT UNIT PROTECTIVE

ENCLOSURE

SORD SYSTEMS AND OPERATIONS REQUIREMENTS DOCUMENT

SOT SCIENCE OPERATIONS TIME

SOTA STATE OF THE ART

SOW STATEMENT OF WORK

SP SYSTEMS PROCEDURES

SPA SOLAR PANEL ASSEMBLY

SPACECOM SPACE COMMUNICATIONS CORP. (WSGT TDRS

CONTRACTOR)

SPAN SOLAR PARTICLE ALERT NETWORK

SOLAR PHYSICS ANALYSIS NETWORK

SPAP SPECIAL PAYLOADS ADAPTIVE PROCESSOR

SPAR STANDARD PAYLOAD ASSURANCE REQUIREMENTS

SPATEL SPACE TELESCOPE RELIABILITY MODEL

SPC SCIENTIFIC PROGRAM COMMITTEE

STORED PROGRAM COMMAND

SPCU STARBOARD POWER CONDITIONING UNIT

SPD SCIENCE PROGRAMS DIVISION

SPF SINGLE POINT FAILURE

SPG SINGLE POINT GROUND

SPI SCIENCE PROGRAM IMPLEMENTATION

SPIF SHUTTLE-POCC INTERFACE FACILITY

SPIKE SCIENCE PLANNING INTERACTIVE KNOWLEDGE

ENVIRONMENT

SPL SPLIT PHASE LEVEL

SPOD SUBORBITAL PROJECTS AND OPERATIONS DIRECTORATE

SPR SOFTWARE PROBLEM REPORT

SPS SIGNAL PROCESSING SUBSYSTEM

SPSS SCIENCE PLANNING AND SCHEDULING SYSTEM

SPT SPECIAL PERFORMANCE TEST

SQA SOFTWARE QUALITY ASSURANCE

SQPN STAGGERED QUADRIPHASE PSEUDO-RANDOM NOISE

SQPSK STAGGERED QUADRATURE PHASE SHIFT KEYING

SR SCHEDULE RESULT (NCC--MPT MESSAGE)

SRB SOLID ROCKET BOOSTER

SRD SOFTWARE REQUIREMENTS DOCUMENT

SRM SOLID ROCKET MOTOR

SRM SYSTEM FOR RESOURCES MANAGEMENT

SRM&QA SAFETY, RELIABILITY, MAINTAINABILITY AND QUALITY

ASSURANCE

SR&QA SAFETY, RELIABILITY, AND QUALITY ASSURANCE

SRR SYSTEM REQUIREMENTS REVIEW

SR&T SUPPORTING RESEARCH AND TECHNOLOGY

S/S SUBSYSTEM

SS SUPPORT SOFTWARE

SYSTEM SIMULATOR

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SPACE STATION

SSA S-BAND SINGLE ACCESS

SSAT S-BAND SIGNAL ACCESS TRANSMITTER

S-BAND SINGLE ACCESS TRANSMITTER

SSC SCIENCE SUPPORT CENTER

SSD SPACE SYSTEMS DIVISION (OF LMSC)

SSDIF SPACECRAFT SYSTEMS DEVELOPMENT AND

INTEGRATION FACILITY

SSE SPACE SUPPORT EQUIPMENT

SSI SCHEDULE SUPPORT IMPACT (NCC--MPT MESSAGE)

SSIU SYSTEMS SIMULATOR INTERFACE UNIT

SSM SUPPORT SYSTEMS MODULE

SPACECRAFT SUBSYSTEMS MONITORING

SUPPORT SERVICE MODULE

SSM/OTA SUPPORT SYSTEMS MODULE/OPTICAL TELESCOPE

ASSEMBLY

SSMS SSM SIMULATOR

SSP STAR/SKY PHOTOMETRY

STANDARD SWITCH PANEL

SSR SOLID STATE RECORDER

SSRF SHIELD SHELL REPLACEMENT FABRIC

SSTS STAR SIMULATOR TEST STAND

ST ScI SPACE TELESCOPE SCIENCE INSTITUTE (also ScI)

ST ScIF SPACE TELESCOPE SCIENCE INSTITUTE FACILITY

STACC STANDARD TELEMETRY AND COMMAND COMPONENTS

STAR SHUTTLE TURNAROUND ANALYSIS REPORT

SPACE TELESCOPE AUDIT REPORT

SPACE TELESCOPE AXIAL REPLACEMENT

STAT ST ASTROMETRY TEAM

STAVF SPACE TELESCOPE ASSEMBLY & VERIFICATION FACILITY

STC SATELLITE TEST CENTER

STDMS SPACE TELESCOPE DATA MANAGEMENT SYSTEM

STDAS SPACE TELESCOPE DEFLECTION AMPLIFIER SUBSYSTEM

STDN SPACEFLIGHT TRACKING AND DATA NETWORK

SATELLITE TRACKING AND DATA NETWORK

STE SPECIAL TEST EQUIPMENT

ST-ECF SPACE TELESCOPE-EUROPEAN COORDINATING FACILITY

STEIS SPACE TELESCOPE ELECTRONIC INFORMATION SYSTEM

STEMS SPACE TELESCOPE EQUIPMENT MANAGEMENT SYSTEM

STEP SPECIALTY TRAINING FOR ENTRY-LEVEL PROFESSIONALS

STF SATELLITE TEST FACILITY

STFS SPACE TELESCOPE FLIGHT SOFTWARE

STFSDB STFS DATABASE

STFVS ST FUNCTIONAL VERIFICATION SIMULATION

STGS SPACE TELESCOPE GROUND SYSTEM

STGT SECOND TDRS GROUND TERMINAL

STIC SPACE TELESCOPE INSTITUTE COUNCIL

STICR STIS CPL ROUTING

STIF SOFTWARE TEST AND INTEGRATION FACILITY

STIK STIS THERMAL IMPROVEMENT KIT

STIS THERMAL INTERFACE KIT

STINT STANDARD INTERFACE (FOR COMPUTER)

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STIS SPACE TELESCOPE IMAGING SPECTROGRAPH

STM STRUCTURAL/THERMAL MODEL

STMEM STRUCTURAL/THERMAL MODEL AND ENGINEERING MODEL

STOCC SPACE TELESCOPE OPERATIONS CONTROL CENTER

STOL SYSTEMS TEST AND OPERATION LANGUAGE

STOMS SPACE TELESCOPE OBSERVATORY MANAGEMENT

SYSTEM

STP SPACE TEST PAYLOAD

STPCOE SPECIAL TO PROJECT CHECKOUT EQUIPMENT

STPS SUMMARY TASK PLANNING SHEET

STR SCIENCE TAPE RECORDER

STRAP SPACE TELESCOPE RESOURCE-ANALYSIS PROGRAM

STS SHUTTLE TRANSPORTATION SYSTEM

SPACE TRANSPORTATION SYSTEM

STSDAS SPACE TELESCOPE SCIENCE DATA ANALYSIS SOFTWARE

STSOC SPACE TELESCOPE SCIENCE OPERATIONS CENTER

STSOF SPACE TELESCOPE SCIENCE OPERATIONS FACILITY

STSOP SPACE TELESCOPE SCIENCE AND OPERATIONS PROJECT

STV SYSTEM THERMAL VAC

SUPIDEN SUPPORT IDENTIFICATION CODE (NCC)

SV SCIENCE VERIFICATION

S/W SOFTWARE

S/W CCB SOFTWARE CONFIGURATION CONTROL BOARD

SWAD SHOP WORK AUTHORIZING DOCUMENT

SWAG SCIENTIFIC "WILD ASS" GUESS

SWAS SUBMILLIMETER WAVE ASTRONOMY SATELLITE

SWE SOLAR WIND EXPERIMENT

SWG SCIENCE WORKING GROUP

SYNC SYNCHRONIZATION

TTAC TELEMETRY AND COMMAND (PROCESSOR)

TELESCOPE ALLOCATION COMMITTEE

TAG TWO-AXIS GIMBAL

TAR TEST AUTHORIZATION REQUEST

TAV TARGET ACQUISITION AND VERIFICATION

TEST AND VERIFICATION

T/B THERMAL BALANCE

TB THERMAL BAKE

TALK BACK

TBD TO BE DETERMINED

TBF THERMAL BALANCE FIXTURE

TBR TO BE RESOLVED

TBS TO BE SPECIFIED

TO BE SUPPLIED

T&C TELEMETRY AND COMMAND

TC TELECOMMAND

TEST CONDUCTOR

THERMAL CONTROL

THERMAL COUPLE

TCB TEST CERTIFICATION BOARD

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TEST CONNECTOR BUFFER

TCC TEST CONTROL CENTER

TIMING, CLOCK, AND CONTROL

TCE THERMAL CONTROL ELECTRONICS

TCM TEMPERATURE CONTROL MODULE

TCS THERMAL CONTROL SUBSYSTEM

TCTE TELECOMMAND TEST EQUIPMENT

TCU TEMPERATURE CONTROL UNIT

TCXE TEMPERATURE-COMPENSATED CRYSTAL OSCILLATOR

TD TECHNICAL DIRECTIVE

TDC TIME-TO-DIGITAL CONVERTER

TDF TEST DATA FOLDER

TDM TIME DIVISION MULTIPLEXING

TDR TRACKING DISCREPANCY REPORT

TDRS TRACKING AND DATA RELAY SATELLITE

TDRSS TRACKING AND DATA RELAY SATELLITE SYSTEM

TDRSSGT TDRSS GROUND TERMINAL (WHITE SANDS, NEW MEXICO)

TDS TELEMETRY DATA STORE

TDT TEST DATA TEAM

TDTL TEST DATA TEAM LEADER

TDY TEMPORARY DUTY

T&E TEST AND EVALUATION

TE TEST EQUIPMENT

TEC THERMOELECTRIC COOLER

TELB TEST ENGINEERING LOGBOOK

TEX TRANSMIT EXPERIMENT

TFC TELEMETRY FORMAT AND CONTROL

TGRS TRANSIENT GAMMA-RAY SPECTROMETER

TI TECHNICAL INSTRUCTION

TEXAS INSTRUMENT

TIF TECHNICAL INTERFACE UNIT

TIM TECHNICAL INTERCHANGE MEETING

TIMEKEEPER (RESET)

TIP TILTED PAYLOAD

TIPS TELESCOPE AND INSTRUMENT PERFORMANCE

SUMMARY MEETING

TIROS TELEVISION INFRARED OBSERVATION SATELLITE

TLM TELEMETRY

TM TELEMETRY

TRANSPORT MODULE

TMIS TECHNICAL MANAGEMENT INFORMATION SYSTEM

TML TOTAL MASS LOSS

TMM THERMAL MATH MODEL

TMP TECHNICAL MANAGEMENT PLAN

TMTE TELEMETRY TEST EQUIPMENT

TO TECHNICAL OFFICER

TOCC TDRS OPERATIONS CONTROL CENTER (AT WSGT)

TOF TIME OF FLIGHT

TOM TOTAL OUTGASSING MEASUREMENT

TOP TECHNICAL OPERATING PROCEDURE

TOVS TIROS OPERATIONAL VERTICAL SOUNDER

TOWS TEMPERATURE-CONTROLLED OPTICAL WITNESS

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SAMPLE

TOY TIME OF YEAR

TP TEST PROCEDURE

TPCN TEST PROCEDURE CHANGE NOTICE

TPG TEST PATTERN GENERATOR

TQCM TEMPERATURE CONTROLLED QCM

TQM TOTAL QUALITY MANAGEMENT

TR TAPE RECORDER

TRANS TRANSFORMATION

TRB TEST REVIEW BOARD

TRIM TIME RESOLUTION IMAGING MODE

TRMM TROPICAL RAINFALL MEASUREMENT MISSION

TRR TEST READINESS REVIEW

T/S TROUBLESHOOTING

TSEPS TELEROBOTICS SIMULATION OF EXPLORER PLATFORM

SERVICING

TSP THRIFT SAVINGS PLAN

TSR TEST STATUS REPORT

TSS TAPS SUPPORT STRUCTURE

TSU THERMAL STRUCTURAL UNIT

TTC TELEMETRY, TRACKING, AND COMMANDING

TTL TRANSISTOR-TRANSISTOR LOGIC

TTSC TELESCOPE TIME STEERING COMMITTEE

TTU TIME TAG UNIT

T/V THERMAL VACUUM

T & V TEST AND VERIFICATION

TV TELEVISION

TVM TEST VERIFICATION MATRIX

TVR TEST VERIFICATION REVIEW

UUA UNIVERSITY OF ARIZONA

UAI USE AS IS

UARS UPPER ATMOSPHERE RESEARCH SATELLITE

UAS URGENT ACTION SURVEY

UASE UARS AIRBORNE SUPPORT EQUIPMENT

UCB UNIVERSITY OF CALIFORNIA AT BERKELEY

UCOS UNIVERSAL CHECKOUT STATION

UCSD UNIVERSITY OF CALIFORNIA, SAN DIEGO

UDF UNIT DEVELOPMENT FOLDER

UDL UNIQUE DATA LOG

UFLB UNABERRATED FOCUSED LIGHT BEAM

UHF ULTRA HIGH FREQUENCY

ULE ULTRA LOW EXPANSION

um MICROMETER (10-6m)

UMB UMBILICAL

uP MICROPROCESSOR

UPN UNIQUE PROJECT NUMBER

UPS USER PLANNING SYSTEM

UNINTERRUPTABLE POWER SOURCE

UNDERGRADUATE PROFESSIONAL STUDY PROGRAM

USA UNITED STATES OF AMERICA

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USB USER's SUPPORT BRANCH

UST UNIVERSAL STANDARD TIME

UT UNIVERSAL TIME

UNIVERSITY OF TEXAS

UTC UNIVERSAL TIME CODE

UNIVERSAL TIME COORDINATION

UTDF UNIVERSAL TRACKING DATA FORMAT

UTE UNIT TEST EQUIPMENT

UUT UNIT UNDER TEST

UV ULTRAVIOLET

UVIS ULTRAVIOLET VISIBLE

UW UNIVERSITY OF WISCONSIN

VV VOLTS

VAB VEHICLE ASSEMBLY BUILDING

VAC VOLTS ALTERNATING CURRENT

VAL VEHICLE ASSEMBLER/LOADER

VAP VERIFICATION AND ACCEPTANCE PROGRAM

VATA VERTICAL ASSEMBLY AND TEST AREA

VATS VERTICAL ASSEMBLY TEST STAND

VAX VIRTUAL ADDRESS EXTENSION

VCHS VISIBLY CLEAN HIGHLY SENSITIVE

VCM VOLATILE CONDENSABLE MATERIALS

VCS VEHICLE COMPUTER SIMULATION

VAPOR COOLED SHROUD

VDC VOLTAGE DIRECT CURRENT

VDD VERSION DESCRIPTION DOCUMENT

VDU VISUAL DISPLAY UNIT

VEFR VEHICLE FRAME

VEST VEHICLE ELECTRICAL SYSTEMS TEST (FACILITY)

VETIME VEHICLE ELAPSED TIME WORD

VHF VERY HIGH FREQUENCY

VIC VEHICLE IDENTIFICATION CODE (NCC)

VIF VERTICAL INTEGRATION FACILITY

VIK VOLTAGE IMPROVEMENT KIT

VIP VIRTUAL INTERFACE PROCESSOR

VIPR VIDEO IMAGING AND PHOTOGRAPHIC REQUIREMENTS

SYSTEM

VLA VERIFICATION LOADS ANALYSIS

VERY LARGE ARRAY

VMS VIRTUAL MEMORY SYSTEM

VOCC VEST OPERATIONS CONTROL CENTER

VP VISIBILITY PERIOD

VPF VERTICAL PROCESSING FACILITY

VPHD VERTICAL PAYLOAD HANDLING DEVICE

VPU VIDEO PROCESSING UNIT

VRAM VIRTUAL RANDOM ACCESS MEMORY

VRCS VERNIER REACTION CONTROL SYSTEM

VRSD VERIFICATION REQUIREMENTS & SPECIFICATION

DOCUMENT

VSWR VOLTAGE STANDING WAVE RATIO

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V & T VERIFICATION AND TEST

VTL VERTICAL TRACKING LOG

V&V VERIFICATION AND VALIDATION

WW WATT

WAD WORK AUTHORIZATION DOCUMENT

WAG "WILD ASS" GUESS

WBS WORK BREAKDOWN STRUCTURE

WCA WORST CASE ANALYSIS

WEAR WBS ELEMENT AUDIT REVIEW

WETF WEIGHTLESS ENVIRONMENT TRAINING FACILITY (JSC)

WF/PC WIDE FIELD/PLANETARY CAMERA (1)

WFC WIDE FIELD CHANNEL (ACS)

WFC3 WIDE FIELD CAMERA 3

WFF WALLOPS FLIGHT FACILITY

WFPC WIDE FIELD PLANETARY CAMERA (1 or 2)

WFPC2 WIDE FIELD PLANETARY CAMERA (2)

WFE WAVEFRONT ERROR

WFS WAVEFRONT SENSOR

WG WORKING GROUP

WI WALLOPS ISLAND

WIG WITHIN GRADE INCREASE

WIT WFPC INSERTION TOOL

WL WESTERN LABORATORIES (OF BASD)

WMS WIDE FIELD PLANETARY CAMERA MECHANICAL SIMULATOR

WP WORK PACKAGE

WSMCR WESTERN SPACE AND MISSILE CENTER REGULATION

WSMR WHITE SANDS MISSILE RANGE

WSNGT WHITE SANDS NASA GROUND TERMINAL (NEW MEXICO)

WSTF WHITE SANDS TEST FACILITY

WT WEIGHT

WTR WESTERN TEST RANGE

XXFORM TRANSFORMATION

XRS X-RAY SPECTROMETER

XTE X-RAY TIMING EXPLORER

YYTD YEAR TO DATE

ZZGSP ZERO GYRO SUN POINT

ZLV Z LOCAL VERTICAL

ZOE ZONE OF EXCLUSION

ZSI Z SOLAR INERTIAL