| ACRONYM |
DESCRIPTION |
| r |
CORRELATION COEFFICIENT |
| R |
RETURN |
| R & D |
RESEARCH AND DEVELOPMENT |
| R & I |
RECEIVING & INSPECTION |
| R & M |
RELIABILITY AND MAINTAINABILITY |
| R & QA |
RELIABILITY AND QUALITY ASSURANCE |
| R/L |
RETURN LINK |
| R/M |
RELIABILITY/MAINTAINABILITY |
| R/T |
REAL TIME |
| R/V |
RESEARCH VESSEL (NOAA SHIP NOTATION) |
| R2 |
ROLL ENGINEERING MODEL DATA RECORD |
| RA |
RIGHT ASCENSION |
| RA |
RADAR ALTIMETER |
| RAAC |
REMOTE ACTIVE ARCHIVE CENTER |
| RAB |
RADIO BEACON |
| RACE |
RESEARCH AND APPLICATIONS COOPERATIVE EXPERIMENT |
| RAD |
RADIATION ABSORBED DOSE |
| RADALT |
RADAR ALTIMETER |
| radar |
RADIO DETECTION AND RANGING |
| RADARSET |
RADAR SATELLITE (CANADIAN FREE-FLYER WITH U.S. AND U.K. LAUNCH) |
| RADID |
DIAL-UP RADAR |
| RAFS |
REGIONAL ANALYSIS AND FORECAST SYSTEM (NMC) |
| RAID |
REAL-TIME APPLICATION INTERACTIVE DEBUGGER |
| RAIDS |
REMOTE ATMOSPHERIC AND IONOSPHERIC DETECTION SYSTEM |
| RAM |
RANDOM ACCESS MEMORY |
| RAMIS |
RAPID ACCESS MANAGEMENT INFORMATION SYSTEM |
| RAMM |
REGIONAL AND MESOSCALE METEOROLOGY BRANCH (NESDIS, FT COLLINS, CO) |
| RAMS |
RANDOM-ACCESS MEASUREMENT SYSTEM |
| RAMS |
REMOTE ATTITUDE MEASUREMENT SYSTEM (NASA) |
| raob |
RADIOSONDE OBSERVATION |
| RAP |
RESTRICTED ACCESS PROCESSOR |
| RASS |
RADIO ACOUSTIC SOUNDING SYSTEM |
| RAT |
REQUIREMENTS ALLOCATION TABLE |
| RAU |
REMOTE ACQUISITION UNIT |
| RAW |
REACTION WHEEL ASSEMBLIES |
| RAWARC |
RADAR WARNING AND COORDINATION |
| RBE |
RELATIVE BIOLOGICAL EFFECTIVENESS |
| RBI |
REMOTE BUS ISOLATOR |
| RBV |
RETURN BEAM VIDECON (ERTS/EARLY LANDSAT SENSOR) |
| RCB |
REQUIREMENTS CHANGE BOARD |
| RCC |
RESCUE COORDINATION CENTER |
| RCCDF |
REMOTE CONTROL CENTER DEVELOPMENT FACILITY |
| RCE |
REACTION CONTROL EQUIPMENT |
| RCG |
REFERENCE CONCEPT GROUP |
| RCM |
RELIABILITY CENTRED MAINTENANCE |
| RCP |
RIGHT/RIGHTHAND CIRCULAR POLARIZATION |
| RCPE |
REACTION CONTROL AND PROPULSION EQUIPMENT |
| RCS |
REACTION CONTROL SYSTEM/SUBSYSTEM |
| RCS |
RADAR BACKSCATTERING CROSS SECTION |
| RCU |
REMOTE CONTROL UNIT |
| RCU |
RECEIVER POWER UNIT |
| RCVR/PROC |
RECEIVER/PROCESSOR |
| RDBMS |
RELATIONAL DATA BASE MANAGEMENT SYSTEM |
| RDC |
REGIONAL DATA CENTER |
| RDDM |
RETURN DATA RELAY MEASUREMENT |
| RDET |
REGULATED DIRECT-ENERGY TRANSFER |
| RDN |
RELIABILITY DISCREPANCY NOTICE |
| RDR |
REVISION DIFFERENCE RECONCILIATION |
| RDU |
RECEIVER-DEMODULATOR UNIT |
| RDW |
REQUEST FOR DEVIATION/WAIVER |
| RE |
RADIATED EMISSIONS |
| REA |
AMPERE/AMPERE-TURN(S) |
| REA |
REACTION ENGINE ASSEMBLY |
| REA |
THREE DIMENSIONAL |
| RECCO |
RECONNAISSANCE CODE |
| Ref |
REFERENCE |
| REM |
ROENTGEN EQUIVALENT (MAN) |
| RETA |
RIGID EXPLOSIVE TRANSFER ASSEMBLY |
| REV |
REVISION |
| rev. |
REVOLUTION (ORBITAL) |
| RF or rf |
RADIO FREQUENCY |
| RF SOC |
RADIO FREQUENCY SIMULATIONS OPERATIONS CENTER |
| RFF |
RF FILTER |
| RFI |
RADIO FREQUENCY INTERFERENCE |
| RFI |
REQUEST FOR INFORMATION |
| RFM |
RADIO FREQUENCY MANAGEMENT (NESDIS, SUITLAND, MD) |
| RFN |
RDU FILTER NETWORKS |
| RFP |
REQUEST FOR PROPOSAL |
| RFQ |
REQUEST FOR QUOTATION/QUOTE |
| RFS |
RF SWITCH |
| RGB |
RED/GREEN/BLUE |
| RGON |
REMOTE GEOPHYSICAL OBSERVING NETWORK |
| RGS |
RECEIVING GROUND SYSTEM (ASF) |
| RGYRO |
REDUCED GYRO |
| RH |
MEAN RELATIVE HUMIDITY |
| RHC |
RIGHT-HAND CIRCULAR (POLARIZATION) |
| RHCP |
RIGHT-HAND CIRCULAR POLARIZATION |
| RHI |
RANGE HEIGHT INDICATOR |
| RHS |
RIGHT HAND SIDE (NOTATION USED BY NON-SAILORS) |
| RID |
RAW INSTRUMENT DATA |
| RID |
REVIEW ITEM DESCRIPTION |
| RIDS |
REVIEW ITEM DISPOSITION |
| RISOP |
RAPID IMAGE SCANNING OPERATION |
| RITS |
RADIATIVELY IMPORTANT TRACE SPECIES |
| RIU |
REMOTE INTERFACE UNIT |
| RJE |
REMOTE JOB ENTRY |
| RLA |
REPAIR LEVEL ANALYSIS |
| RLCC |
REMOTE LAUNCH CONTROL CENTER |
| RLO |
LET DOWN RESISTOR |
| RM |
ROCKET MOTOR |
| RM |
REMOTE MANIPULATOR |
| RM |
RESOURCE MODULE |
| RMA |
RELIABILITY, MAINTAINABILITY, AND AVAILABILITY |
| RMDU |
REMOTE MULTIPLEXER/DEMULTIPLEXER UNIT |
| RME |
RADIATION MONITORING EQUIPMENT (NASA/SHUTTLE GAMMA RADIATION LEVEL) |
| RMI |
REMOTE MEMORY INTERFACE |
| RMM |
RISK MITIGATION MODEL |
| RMMB |
REGIONAL & MESOSCALE METEOROLOGY BRANCH (NESDIS, FT. COLLINS, CO) |
| RMR/TFR |
FORD AEROSPACE REQUEST FOR MATERIAL REVIEW/TROUBLE-FAILURE REPORT |
| rms |
ROOT MEAN SQUARE |
| RMS |
REMOTE MANIPULATOR SYSTEM |
| rmsd |
ROOT MEAN SQUARE DIFFERENCES |
| RN |
RATE NULLING |
| RN |
REVISION NOTICE |
| RNG |
RANGE |
| ROI |
REGIONAL OPTIMUM INTERPOLATION (NMC) |
| ROM |
READ ONLY MEMORY |
| ROM |
ROUGH ORDER OF MAGNITUDE (BALLPARK COST ESTIMATE/A BUDGETARY WAG) |
| ROS |
RESEARCH OPTICAL SENSOR |
| ROS |
ROSMAN, NC, STDN STATION |
| ROSAT |
ROENTGEN SATELLITE (NASA/FRG SATELLITE FOR X-RAY STUDY) |
| ROTV |
REUSABLE ORBITAL TRANSFER VEHICLE |
| RP |
REFERENCE PUBLICATION |
| RPC |
REMOTE POWER CONTROLLER |
| RPDP |
RECOVERABLE PLASMA DIAGNOSTICS PACKAGE |
| RPEN |
RETRY PENDING |
| RPG |
RESEARCH PLANNING GROUP (NESDIS, CAMP SPRINGS, MD) |
| RPL |
RODENT AND PRIMATE LABORATORY |
| rpm |
REVOLUTION PER MINUTE |
| RPMA |
RETARDING POTENTIAL MASS ANALYZER |
| RPOCC |
REMOTE PAYLOAD OPERATIONS CONTROL CENTER |
| rps |
REVOLUTIONS PER SECOND |
| RPS |
REMOVE POWER SWITCH |
| RPU |
REGIONAL PROCESSING UNIT |
| RRW |
ROLL REACTION WHEEL |
| RS |
RANGE SYSTEM |
| RS |
RADIATED SUSCEPTIBILITY |
| RSR |
RESOURCE STATUS REVIEW |
| RSR |
RELEASE SPECIFICATION REVIEW |
| RSS |
RCE SUPPORT STRUCTURE |
| RSS |
ROOT SUM SQUARE |
| RSS |
REACTION CONTROL SUPPORT STRUCTURE |
| RSS |
ROTATING SERVICE STRUCTURE |
| RSS |
REACTION SYSTEM STRUCTURE |
| RSTCS |
REDUNDANT SOCC TELEMETRY AND COMMAND SYSTEM (PART OF GIMTACS) |
| RSWG |
RESPONSE STRATEGIES WORKING GROUP (IPCC) |
| RT |
REAL TIME |
| RT |
RADIATIVE TRANSMISSIVITY |
| RTA |
RESEARCH AND TECHNOLOGY APPLICATION (NESDIS, SUITLAND, MD) |
| RTCM |
RADIO TECHNICAL COMMISSION FOR MARITIME SERVICES |
| RTD |
REAL TIME DATA |
| RTE |
RADIATIVE TRANSFER EQUATION |
| RTG |
RADIOISOTOPE THERMOELECTRIC GENERATOR |
| RTLS |
RETURN TO LAUNCH SITE |
| RTM |
REDUCED THERMAL MODEL |
| RTM |
REQUIREMENTS TRACEABILITY MATRIX |
| RTN |
RETURN |
| RTNEPH |
REAL-TIME NEPH ANALYSIS MODEL |
| RTOP |
RESEARCH AND TECHNOLOGY OBJECTIVES AND PLANS |
| RTS |
REMOTE TRACKING SITES |
| RTSS |
REAL TIME SYSTEM SIMULATOR |
| RTU |
REMOTE TELEMETRY UNIT |
| RUC |
RE USABLE CODE |
| RUPS |
RECORDER/UTILITY PROCESSOR SYSTEM (NASA-MSOCC) |
| RUR |
REFERENCE UPDATE REVIEW |
| RV |
ROUTINE VERIFICATION |
| RVS |
ROUTINE VERIFICATION SHO |
| RW |
REACTION WHEEL |
| RWA |
REACTION WHEEL ASSEMBLY |
| RX |
RECEIVER |
| RXO |
REDUNDANT CRYSTAL OSCILLATOR |
| RYC |
ROLL/YAW COIL |
| RZ |
RETURN TO ZERO |
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