| Acronym | Sense | Language | Topics |
|---|---|---|---|
| RIO | Ressourcenverbrauch reduzieren, Innovationen implementieren, Output optimieren | In German | → Environmental protection |
| RISEC | Rockwell International Shuttle Equipment Cradle | In English | → Astronautics |
| RIT | Rochester Institute of Technology | In English | → Specialized or polytechnical colleges |
| RITE | Research Institute of Innovative Technology for the Earth (www.rite.or.jp) | In English | → Research institutes → Environmental technology, water supply, waste management → Japan |
| RITEAU | Réseau 'Eau et Technologies de l'environnement' | In French | → Environmental protection → Environmental technology, water supply, waste management |
| RJ/EC | Reaction Jet/Engine Control | In English | → Aeronautics, aircraft → Astronautics |
| RJC | Reaction Jet Control | In English | → Aeronautics, aircraft → Astronautics |
| RJD | Reaction Jet Device | In English | → Aeronautics, aircraft → Astronautics |
| RJD | Reaction Jet Driver | In English | → Aeronautics, aircraft → Astronautics |
| RJDA | Reaction Jet Driver Aft | In English | → Aeronautics, aircraft → Astronautics |
| RJDF | Reaction Jet Driver Forward | In English | → Aeronautics, aircraft → Astronautics |
| RJOD | Reaction Jet/OMS Driver | In English | → Aeronautics, aircraft → Astronautics |
| RJTAM | Russian Journal Theoretical and Applied Mechanics | In English | → Serial publications, periodicals → Mechanics → Mechanical engineering → Russia |
| RKA | Rossiskoye Kosmicheskoye Agentsvo | In Russian | → Astronautics |
| RKI | Rheinkraftswerk Iffezheim GmbH | In German | → Energy economics |
| RLEMR | Research Laboratory Engineering Materials Report | In English | → Serial publications, periodicals |
| RLPME | Research Laboratory Precision Machinery Electronics Bulletin | In English | → Serial publications, periodicals → Mechanical engineering → Electronics |
| RM | Rendezvous Maneuver | In English | → Aeronautics, aircraft → Astronautics |
| RMBT | Raccordement Modulaire Basse Tension | In French | → Electrical engineering |
| RMetA | Rivista di Meteorologia Aeronautica | In Italian | → Serial publications, periodicals → Meteorology, climatology → Aeronautics, aircraft |
| RMN | Résonance Magnétique Nucléaire = NMR | Nuclear Magnetic Resonance | In English = RMN | Ressonància Magnètica Nuclear | In Catalan = RMN | Risonanza Magnetica Nucleare | In Italian = תמ"ג | תהודה מגנטית גרעינית | In Hebrew = ЯМР | Я́дерного магни́тного резона́нса | In Russian = НМР | Нуклеарна магнетна резонанција | In Serbian |
In French | → Medicine → Nuclear, atomic, and molecular physics → Nuclear technology |
| RMN | Ressonància Magnètica Nuclear = NMR, תמ"ג, ЯМР, НМР (look above) |
In Catalan | → Medicine → Nuclear, atomic, and molecular physics → Nuclear technology |
| RMN | Risonanza Magnetica Nucleare = NMR, תמ"ג, ЯМР, НМР (look above) |
In Italian | → Medicine → Nuclear, atomic, and molecular physics → Nuclear technology |
| RMNT | Réseau Micro et Nanotechnologies | In French | |
| RNDE | Réseau National des Données sur l'Eau | In French | → Organizations and associations → Hydrology → Environmental technology, water supply, waste management |
| RNEP | Robust Nuclear Earth Penetrator | In English | → Nuclear technology → Military engineering |
| RNPP | Reliability and Network Planning Panel | In English | → Energy economics |
| RNR | Réacteur à Neutrons Rapides | In French | → Nuclear technology |
| RNR | éacteur Nucléaire Rapide | In French | → Nuclear technology |
| RNS | Reusable Nuclear Stage | In English | → Nuclear technology |
| ROCES | Ranger Orbiter Crew Escape System | In English | → Astronautics |
| ROE | Remise d'Ouvrage à l'Exploitant | In French | → Civil engineering |
| ROEU | Remotely Operated Electrical Umbilical | In English | → Astronautics |
| RoHS | Restriction of the use of certain Hazardous Substances (in electrical and electronic equipment) | In English | → Chemicals → Electrical engineering → Electronics |
| RORSAT | Radar Ocean Reconnaissance Satellite | In English | → Marine research, oceanography → Astronautics |
| ROSA | Romanian Space Agency | In English | → Central administration → Astronomy → Astronautics → Romania |
| ROSAT | ROentgen SATellite | In English | → Astronomy → Astronautics |
| ROTV | Returnable Orbital Transfer Vehicle | In English | → Astronautics |
| RP | Rocket Propellant | In English | → Astronautics |
| RPA | Réponses aux Problèmes d'Alimentation | In French | → Energy economics → Electrical engineering |
| RPC | Remote Power Control | In English | → Electrical engineering |
| RPC | Remote Power Controller | In English | → Electrical engineering |
| RPD | Redevance pour Pollution Diffuse | In French | → Taxes, duties → Environmental technology, water supply, waste management |
| RPDE | Réseau Partenarial des Données sur l'Eau | In French | → Organizations and associations → Hydrology → Environmental technology, water supply, waste management |
| RPL | Rated Power Level | In English | → Electrical engineering |
| RPL | Rocket Propulsion Laboratory | In English | → Research institutes → Astronautics |
| RPM | Retro Propulsion Module | In English | → Vehicle engineering |
| RPM | Remote Programmable Multiprocessor | In English | → Electronics |
| RPOC | Remote Payload Operations Center | In English | → Astronautics |
| RPS | Rapport Préliminaire de Sûreté | In French | → Nuclear technology |
| RPV | Remotely Piloted Vehicle | In English | → Vehicle engineering |
| RR | Rendezvous Radar | In English | → Aeronautics, aircraft → Astronautics |
| RRA | Rock River Arms (www.rockriverarms.com) | In English | → Mechanical engineering → Military engineering |
| RRDA | Rendezvous Radar Deployment Actuator | In English | → Aeronautics, aircraft → Astronautics |
| RREA | Rendezvous Radar Electronics Assembly | In English | → Electronics → Astronautics |
| RREU | Rendezvous Radar Electronics Unit | In English | → Electronics → Astronautics |
| RRIO | Rail-to-Rail Input and Output | In English | → Electronics |
| RRIT | Réseau de Recherche et d'Innovation Technologique | In French | → Research policy |
| RRS | Retrorocket System | In English | → Astronautics |
| RRT | Rendezvous Radar Transducer | In English | → Astronautics |
| RRT | Rendezvous Radar Transfer | In English | → Astronautics |
| RRT | Rendezvous Radar Transponder | In English | → Astronautics |
| RRW | Reliable Replacement Warhead | In English | → Military engineering |
| RSD | Relevé Sans Dérangement | In French | → Energy economics → Electrical engineering |
| RSE | Réseau Spécial d'Exploitation | In French | → Energy economics |
| RSE-M | Règles de Surveillance en Exploitation des Matériels Mécaniques des Îlots Nucléaires REP | In French | → Nuclear technology |
| RSEAM | Rockwell System Engineering Analysis Model | In English | |
| RSEL | Renesas Semiconductor Europe Landshut | In English | → Electronics |
| RSF | Recherche Systématique de Fuites | In French | → Energy economics |
| RSLS | Redundant Set Launch Sequence | In English | → Astronautics |
| RSN | Reactive Sensor Networks | In English | → Electronics |
| RSO | Resident Space Object | In English | → Astronomy → Astronautics |
| RSOC | Rockwell Space Operations Company | In English | → Astronautics |
| RSRA | Rotor System Research Aircraft | In English | → Aeronautics, aircraft |
| RSRB | Redesigned Solid Rocket Booster | In English | → Astronautics |
| RSRM | Redesigned Solid Rocket Motor | In English | → Astronautics |
| RSS | Reactant Supply System | In English | → Vehicle engineering |
| RSSPO | Resident Space Shuttle Project Office | In English | → Astronautics |
| RSW | RFID, Sensors and Wireless | In English | → Electronics → Telecommunications |
| RT | Railway Telecommunications | In English | → Telecommunications → Rail transport engineering → Transport and postal services |
| RT | Reference Trajectory | In English | → Aeronautics, aircraft → Astronautics |
| RTA | Réseau Technologique d'Alsace | In French | |
| RTAC | Research and Technology Advisory Committee | In English | → Organizations and associations → Research policy |
| RTCA | Radio Technical Commission for Aeronautics | In English | → Organizations and associations → Telecommunications → Aeronautics, aircraft |
| RTCE | Rotation/Translation Control Electronics | In English | → Electronics |
| RTD | Research, Technology and Development | In English | → Research policy |
| RTE | Responsible Test Engineer | In English | |
| RTE | Réseau Technique Électricité | In French | → Electrical engineering |
| RTE | Réseau de Transport d'Électricité (www.rte-france.com) | In French | → Electrical engineering |
| RTF | Return To Flight | In English | → Aeronautics, aircraft → Astronautics |
| RTFSS | Real-Time Flight Safety Software | In English | → Software → Accidents, risks, safety → Aeronautics, aircraft → Astronautics |
| RTG | Radioisotope Thermal Generator | In English | → Energy economics → Nuclear technology |
| RTG | Radioiziotopa Termoelektra Generatoro | In Esperanto | → Nuclear technology |
| RTLS | Return To Launch Site | In English | → Aeronautics, aircraft → Astronautics |
| RTOP | Research and Technology Objectives and Plans | In English | → Research policy |
| RTOP | Research and Technology Operating Plan | In English | → Research policy |
| RUF | Rapid Urban Flexible | In English | → Vehicle engineering |
| RV | Recovery Vehicle | In English | → Vehicle engineering |
| RV | Reentry Vehicle | In English | → Astronautics |
| RVAO | Reentry Vehicle Associated Object | In English | → Astronautics |
| RVCF | Remote Vehicle Checkout Facility | In English | → Vehicle engineering |
| RvPT | Review of Physics in Technology | In English | → Serial publications, periodicals → Physics |
| RvRST | Revue Roumaine des Sciences Techniques - Série de Mécanique Appliquée | In French | → Serial publications, periodicals → Mechanical engineering |
| RWE | Read/Write Electronics | In English | → Electronics |
| RWE | Rheinisch-Westfälisches Elektrizitätswerk | In German | → Electrical engineering |
| RZGW | Regionalny Zarząd Gospodarki Wodnej | In Polish | → 626 → 627 |
| S&E | Science and Engineering | In English | → Mathematics and natural sciences |
| S&MST | Space and Missile System Test | In English | → Military engineering → Astronautics |
| S&SED | Satellite and Space Electronics Division | In English | → Electronics → Astronautics |
| S&T | Science and Technology = CyT | Ciencia y Tecnología | In Spanish = S&T | Sciences et Technologie | In French = C&T | Ciência e Tecnologia | In Portuguese |
In English | → Mathematics and natural sciences |
| S&T | Sciences et Technologie = CyT, C&T (look above) |
In French | → Mathematics and natural sciences |
| SAAB | Svenska Aeroplan Aktie Bolaget | In Swedish | → Automobile manufacturing → Aeronautics, aircraft → Sweden |
| SAALC | San Antonio Air Logistics Center | In English | → Maintenance and logistics → Aeronautics, aircraft |
| SAAM | Surface-Air Anti-Missile | In English | → Military engineering |
| SAAM | Système d'Auto-défense Anti-Missiles | In French | → Military engineering |
| SAAQ | Société de l'Assurance Automobile du Québec | In French | → Insurance → Automobile manufacturing → Transport and postal services → Canada |
| SAAS | Shuttle Aerospace Actuator Simulator | In English | → Aeronautics, aircraft → Astronautics |
| SAB | Satellite Assembly Building | In English | → Astronautics |
| SAB | Shuttle Assembly Building | In English | → Astronautics |
| SAB | Spacecraft Assembly Building | In English | → Astronautics |
| SAB | Storage and Assembly Building | In English | → Mechanical engineering |
| SABCA | Société Anonyme Belge de Constructions Aéronautiques | In French | → Aeronautics, aircraft → Belgium |
| SABENA | Société Anonyme Belge d'Exploitation de la Navigation Aérienne | In French | → Aeronautics, aircraft → Transport and postal services → Belgium |
| SABIR | Space-Based Interceptor | In English | → Military engineering → Astronautics |
| SAC | Space Applications Corporation | In English | → Astronautics |
| SAC4 | Self-Aligned Controlled Collapse Chip Connect | In English | → Electronics |
| SACPTCP | Sol-Air Courte Portée et Très Courte Portée | In French | → Military engineering |
| SACRE | Système d'Aide au Choix de REnouvellement (des canalisations en fontes grises) | In French | → Software → Energy economics |
| SACS | Software Avionics Command Support | In English | → Software → Aeronautics, aircraft |
| SACSO | Suspension ACtive pour essais en SOufflerie | In French | → Physics → Vehicle engineering |
| SAD | Shuttle Authorized Document | In English | → Astronautics |
| SAD | Spacecraft Attitude Display | In English | → Astronautics |
| SADIEau | Système Africain de Documentation et d'Information sur l'Eau = AWIS | African Water Information (and Documentation) System | In English |
In French | → Knowledge management → Hydrology → 626 → Environmental technology, water supply, waste management → Africa |
| SADPT | Solar Array Drive and Power Transfer | In English | → Energy economics → Electrical engineering |
| SADT | Systems Analysis and Design Technique | In English | |
| SAE | Society of Automotive Engineers | In English | → Organizations and associations → Vehicle engineering |
| SAEF | Spacecraft Assembly and Encapsulation Facility | In English | → Mechanical engineering → Astronautics |
| SAEIV | Système d’Aide à l’Exploitation et à l’Information Voyageurs | In French | → Software → Rail transport engineering → Rail transport → France |
| SAEPP | Sophicated Aero Engine Performance Program | In English | → Aeronautics, aircraft |
| SAF | Spacecraft Assembly Facility | In English | → Astronautics |
| SAFAF | Société Anonyme Française des Automobiles Fiat | In French | → Mechanical engineering → Automobile manufacturing |
| SAFIRE | Service des Avions Français Instrumentés pour la Recherche en Environnement | In English | → Aeronautics, aircraft → Environmental protection → Threats to the environment → France |
| SAFT | Société des Accumulateurs Fixes et de Traction | In French | → Electrical engineering |
| SAGE | Schéma d'Aménagement et de Gestion des Eaux | In French | → Hydrology → 626 → 627 |
| SAGEM | Société d'Applications Générales d'Électricité et de Mécanique | In French | → Electrical engineering → Mechanical engineering → Aeronautics, aircraft → France |
| SAH | Society of Automotive Historians | In English | → Organizations and associations → Vehicle engineering → History |
| SAIC | Science Applications International Corporation | In English | |
| SAID | Shuttle Authorized Item Document | In English | → Astronautics |
| SAIL | Shuttle Avionics Integration Laboratory | In English | → Research institutes → Aeronautics, aircraft → Astronautics |
| SAIM | Système d'Aide à Interprétation Multicapteur | In French | → Military affairs → Military engineering |
| SAINT | Satellite Interceptor Program | In English | → Astronautics |
| SAL | Shuttle Avionics Laboratory | In English | → Research institutes → Aeronautics, aircraft → Astronautics |
| SAL | Strategic Arms Limitation | In English | → International relations → Military engineering |
| SAL | Supersonic Aerophysics Laboratory | In English | → Research institutes → 5335 → Aeronautics, aircraft → United States |
| SALC | Sacramento Air Logistics Center | In English | → Maintenance and logistics → Aeronautics, aircraft |
| SAM | Shuttle Activation Monitor | In English | → Astronautics |
| SAM | School of Aerospace Medicine | In English | → Specialized or polytechnical colleges → Medicine → Aeronautics, aircraft → Astronautics |
| SAM | Shuttle Attachment Manipulator | In English | → Astronautics |
| SAM | Special Air Mission | In English | → Aeronautics, aircraft |
| SAM | Surface-To-Air Missile | In English | → Military engineering |
| SAMP | Shuttle Automated Mass Properties | In English | → Astronautics |
| SAMP | Sol-Air Moyenne Portée | In French | → Military engineering |
| SAMP-T | Sol-Air Moyenne Portée - Terrestre | In French | → Military engineering |
| SAMS | Space Acceleration Measurement System | In English | → Astronautics |
| SAMS | Shuttle Altitude Measuring System | In English | → Astronautics |
| SAMS | Shuttle Attached Manipulator System | In English | → Astronautics |
| SAMTEC | Space And Missile Test Center | In English | → Military engineering → Astronautics |
| SAMTO | Space And Missile Test Organization | In English | → Military engineering → Astronautics |
| SANDAC | Sandia Airborne Computer Guidance System | In English | → Computer hardware → Aeronautics, aircraft |
| SANDRE | Service d'Administration Nationale des Données et Référentiels sur l'Eau | In French | → Central administration → Hydrology → 627 → Environmental technology, water supply, waste management |
| SANS | Stellar Autonomous Navigation System | In English | → Astronomy → Astronautics |
| SANTIAGO | Sûreté des Assemblages Nucléaires TIers ou Alternatifs pour les Gestions d'Origine | In French | → Nuclear technology |
| SApMM | North Holland Series Applied Mathematics Mechanics | In English | → Serial publications, periodicals → Mathematics → Mechanical engineering → Netherlands |
| SAR | Successive Approximation Register | In English | → Electronics |
| SARA | Simulateur Avancé pour la Recherche (dans le domaine de l')Automobile | In French | → Automobile manufacturing |
| SARAH | Sanierung radonbelasteter Häuser | In German | → Environmental technology, water supply, waste management → Construction |
| SAREX | Shuttle Amateur Radio Experiment | In English | → Astronautics → Telecommunications |
| SARP | Shuttle Astronaut Recruitment Program | In English | → Personnel management → Astronautics |
| SAS | Solar Array Simulator | In English | → Energy economics |
| SAS | Solar Array System | In English | → Energy economics |
| SAS | Small Astronomy Satellite | In English | → Astronautics → Astronomy |
| SASCB | Shuttle Avionics Software Control Board | In English | → Software → Aeronautics, aircraft → Astronautics |
| SASR | Shuttle Avionics Status Review | In English | → Aeronautics, aircraft → Astronautics |
| SASR | Shuttle Avionics System Review | In English | → Aeronautics, aircraft → Astronautics |
| SATAF | Shuttle Activation Task Force | In English | → Astronautics |
| SatCo | Satellite Communications | In English | → Serial publications, periodicals → Astronautics |
| SATCON | Satellite Connectivity Simulation | In English | → Electrical engineering → Astronautics |
| SATCP | Sol-Air de Très Courte Portée | In French | → Military engineering |
| SATO | Shuttle Attached TeleOperator | In English | → Astronautics |
| SATS | Shuttle Avionics Test Set | In English | → Aeronautics, aircraft → Astronautics |
| SATS | Shuttle Avionics Test Station | In English | → Aeronautics, aircraft → Astronautics |
| SATS | Small Applications Technology Satellite | In English | → Astronautics |
| SATSIM | Satellite Target Sensing Simulation | In English | → Astronautics |
| SAUR | Société d'Aménagement Urbain et Rural (www.saur.com) | In French | → Environmental technology, water supply, waste management → France |
| SAVM | Syndicat Autolib Vélib Métropole | In French | → Organizations and associations → Road transport → Vehicle engineering → France |
| SAW | Satellite Attack Warning | In English | → Astronautics |
| SAW/V | Satellite Attack Warning/Verification | In English | → Astronautics |
| SB | Space Base | In English | → Astronautics |
| SBDEW | Space-Based, Directed-Energy Weapon | In English | → Military engineering → Astronautics |
| SBDEWSIM | Space-Based, Directed-Energy Weapon Simulation | In English | → Military engineering → Astronautics |