| Acronym | Sense | Language | Topics |
|---|---|---|---|
| A&L | Approach and Landing | In English | → Aeronautics, aircraft |
| A&P | Attitude and Pointing | In English | |
| A&R | Astronomie und Raumfahrt | In German | → Serial publications, periodicals → Astronomy |
| AAA | Astronaut-Actuated Abort | In English | |
| AAA | Association des Astronautes Autonomes | In French | → Associations → Astronomy |
| AACCS | Analytical Approach to Candidate Constellation Selection | In English | → Astronomy |
| AACS | Attitude and Articulation Control Subsystem | In English | |
| AACS | Attitude and Antenna Control System | In English | → Telecommunications |
| AAFE | Advanced Applications Flight Equipment | In English | → Aeronautics, aircraft |
| AAIR | Advanced Atmospheric sounder and Imaging Radiometer | In English | → Meteorology, climatology |
| AAM | Federal Aviation Administration Office of Aviation Medicine | In English | → Central administration → Medicine |
| AAO | Astronaut Activities Office | In English | |
| ABE | Air-Based Electronics | In English | → Electronics |
| ABM | Apogee Boost Motor | In English | |
| ABPS | Air-Breathing Propulsion System | In English | → Military engineering |
| ABRIXAS | Broadband Imaging X-ray All-sky Survey | In English | → Astronomy |
| ACA | Attitude Controller Assembly | In English | |
| ACA | Altitude Controller Assembly | In English | → Aeronautics, aircraft |
| AcAAS | Acta Aeronautica et Astronautica Sinica | In Latin | → Serial publications, periodicals → Aeronautics, aircraft |
| AcAau | Acta Astronautica | In Latin | → Serial publications, periodicals |
| ACAST | Association Contre les Aéroports du Sud Toulousain (www.acast.fr) | In French | → Associations → Transport and postal services → France |
| ACDNS | Attitude Control, Determination & Navigation | In English | |
| ACDS | Attitude Control and Determination System | In English | |
| ACE | Attitude Control Electronics | In English | → Electronics → Aeronautics, aircraft |
| ACEU | AeroControl Electronics Unit | In English | → Electronics → Aeronautics, aircraft |
| ACF | Aviation Club de France (www.aviationclubdefrance.com) | In French | → Organizations and associations → France |
| ACME | Attitude Control and Maneuvering Electronics | In English | → Electronics → Aeronautics, aircraft |
| ACP | Astronaut Control Panel | In English | |
| ACPM | Attitude Control Propulsion Motor | In English | → Mechanical engineering |
| ACPS | Attitude Control Propulsion System | In English | |
| ACS | Altitude Control and Stabilization | In English | → Aeronautics, aircraft |
| ACS | Aft Crew Station | In English | → Aeronautics, aircraft |
| ACS | Attitude Control System | In English | |
| ACS | Attitude Control and Stabilization | In English | |
| ACTS | Advanced Communications Technology Satellite | In English | → Telecommunications |
| ACTS | Advanced Communication Technology Satellite | In English | → Telecommunications |
| ADAC | Attitude Determination And Control | In English | |
| ADACS | Attitude Determination And Control System | In English | |
| ADC | Aerospace Defense Command | In English | → 358 → Aeronautics, aircraft |
| ADC | Attitude Determination & Control | In English | |
| ADCN | Attitude Determination, Control & Navigation | In English | |
| AdEOA | Advances in Earth Oriented Applications and Space Technology | In English | → Serial publications, periodicals → Earth sciences |
| ADEOS | Advanced Earth Observing Satellite (http://kuroshio.eorc.jaxa.jp/ADEOS/) | In English | → Earth sciences |
| ADFRF | Ames/Dryden Flight Research Facility | In English | → Aeronautics, aircraft |
| ADFRF | Ames-Dryden Flight Research Facility | In English | |
| ADI | Attitude Direction Indicator | In English | |
| ADL | Avionics Development Laboratory | In English | → Research institutes |
| ADS | Attitude Determination Subsystem | In English | |
| ADS | Attitude Display System | In English | → Human-computer interaction |
| AE&AT | Aircraft Engineering & Aerospace Technology | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AeAm | Aerospace America | In English | → Serial publications, periodicals → Aeronautics, aircraft → United States |
| AeCh | Aerospace China | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AeCM | Aerospace Composites Materials | In English | → Serial publications, periodicals → Materials science → Aeronautics, aircraft |
| AECMA | Association Européenne des Constructeurs de Matériel Aérospatial | In French | → Associations → Aeronautics, aircraft → Europe |
| AED | Aerospace Electrical Division | In English | → Electrical engineering → Aeronautics, aircraft |
| AeDy | Aerospace Dynamics | In English | → Serial publications, periodicals → Aerodynamics → Aeronautics, aircraft |
| AeEn | Aerospace Engineering | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AEGRS | ASEAN Experts Group on Remote Sensing | In English | → Geodesy, cartography |
| AeMat | Aerospace Materials | In English | → Serial publications, periodicals → Materials science → Aeronautics, aircraft |
| AeMed | Aerospace Medicine | In English | → Serial publications, periodicals → Medicine → Aeronautics, aircraft |
| AerRv | Revue Aérospatiale | In French | → Serial publications, periodicals → Aeronautics, aircraft |
| AeSc | Collection of Papers on Aerospace Science | In English | → Serial publications, periodicals → Astronomy → Aeronautics, aircraft |
| AET | Aerosurface End-to-end Test | In English | → Aeronautics, aircraft |
| AF | Aft Fuselage | In English | |
| AFAL | Air Force Astronautics Laboratory | In English | → Research institutes → 358 → United States |
| AFAL | Air Force Avionics Laboratory | In English | → Research institutes → 358 → United States |
| AFC | Automatic Flight Control | In English | → Aeronautics, aircraft |
| AFCS | Automatic Flight Control System | In English | → Aeronautics, aircraft |
| AFD | Aft Flight Deck | In English | → Aeronautics, aircraft |
| AFDE | Aft Flight Deck Equipment | In English | → Aeronautics, aircraft |
| AFDO | Aft Flight Deck Operator | In English | → Aeronautics, aircraft |
| AFDR | Ascent Flight Design Review | In English | → Aeronautics, aircraft |
| AFO | Abort From Orbit | In English | |
| AFO | Announced Flight Opportunity | In English | → Aeronautics, aircraft |
| AFP | Ariane-Furnished Property | In English | |
| AFRPL | Air Force Rocket Propulsion Laboratory | In English | → Research institutes → 358 → United States |
| AFS | Ascent Flight System | In English | → Aeronautics, aircraft |
| AFSAT | Air Force Satellite | In English | → 358 → United States |
| AFSATCOM | Air Force Satellite Communication(s) | In English | → 358 → Telecommunications → United States |
| AFSC | Air Force Space Command | In English | → 358 → United States |
| AFSCF | Air Force Satellite Control Facility | In English | → 358 → United States |
| AFSCF | Air Force Space Command Facility | In English | → 358 → United States |
| AFSCN | Air Force Satellite Control Network | In English | → 358 → United States |
| AFSCN | Air Force Space Command Network | In English | → 358 → Astronomy → United States |
| AFSCS | Air Force Satellite Communications System | In English | → 358 → Telecommunications → United States |
| AFSD | Air Force Space Division | In English | → 358 → Astronomy → United States |
| AFSIG | Ascent Flight System Integration Group | In English | → Aeronautics, aircraft |
| AFSLV | Air Force Space Launch Vehicle | In English | → 358 → United States |
| AFSSD | Air Force Space Systems Division | In English | → 358 → United States |
| AFSTC | Air Force Satellite Test Center | In English | → 358 → United States |
| AFSTC | Air Force Space Technology Center | In English | → 358 → United States |
| AFSTC | Air Force Space Technology Command | In English | → 358 → United States |
| AFT | Atmospheric Flight Test | In English | → Aeronautics, aircraft |
| AG | Artificial Gravity | In English | |
| AGAA | Attitude Gyro Accelerometer Assembly | In English | |
| AGAP | Attitude Gyro Accelerometer Package | In English | |
| AGC | Apollo Guidance Computer | In English | → Hardware |
| AGCU | Attitude Gyro Coupling Unit | In English | |
| AGE | Aerospace Ground Equipment | In English | → Aeronautics, aircraft |
| AGILE | Astrorivelatore Gamma ad Immagini LEggero | In Italian | → Astronomy |
| AGMC | Aerospace Guidance and Metrology Center | In English | → Aeronautics, aircraft |
| AGS | ASPS Gimbal System | In English | |
| AHRS | Attitude Heading Reference System | In English | |
| AIAA | American Institute of Aeronautics and Astronautics (www.aiaa.org) | In English | → Organizations and associations → Aeronautics, aircraft → United States |
| AIAAJ | American Institute of Aeronautics and Astronautics Journal | In English | → Serial publications, periodicals → Aeronautics, aircraft → United States |
| AIAD | Federazione Aziende Italiane per l'Aerospazio, la Difesa e la Sicurezza (www.aiad.it) | In Italian | → Organizations and associations → Aeronautics, aircraft → Military engineering → Italia |
| AIASJ | American Institute of Aeronautics and Astronautics Student Journal | In English | → Serial publications, periodicals → Aeronautics, aircraft → United States |
| AIDE | Aerospace Installation Diagnostic Equipment | In English | → Aeronautics, aircraft |
| AIL | Avionics Integration Laboratories | In English | → Research institutes |
| AirCo | Air et Cosmos (www.air-cosmos.com) | In French | → Serial publications, periodicals → Astronomy → Aeronautics, aircraft |
| AirSp | Air and Space | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| AL | Approach and Landing | In English | → Aeronautics, aircraft |
| ALAS | Approach/Landing Autopilot Subsystem | In English | → Aeronautics, aircraft |
| ALASAT | Air-Launched Antisatellite | In English | → Military engineering |
| ALDP | Advanced Launch Development Program | In English | |
| ALEXIS | Array of Low Energy X-ray Imaging Sensors | In English | → Astronomy |
| ALFA | Air-Lubricated Free Attitude | In English | |
| ALOS | Advanced Land Observing Satellite | In English | → Earth sciences |
| ALS | Approach/Landing System | In English | → Aeronautics, aircraft |
| ALS | Advanced Launch System | In English | |
| ALS | Automatic Landing System | In English | → Aeronautics, aircraft |
| ALS | Alternative Landing Site | In English | → Aeronautics, aircraft |
| ALSA | Astronaut Life Support Assembly | In English | |
| ALSE | Astronaut Life Support Equipment | In English | |
| ALT | Approach and Landing Test | In English | → Aeronautics, aircraft |
| ALTR | Approach and Landing Test Requirement | In English | → Aeronautics, aircraft |
| AMCA | Aft Motor Controller Assembly | In English | → Aeronautics, aircraft |
| AMEC | Aft Master Events Controller | In English | → Aeronautics, aircraft |
| AMG | Angle of the Middle Gimbal | In English | |
| AMLS | Advanced Manned Launch System | In English | |
| AMO | Aerospace Medical Operations | In English | → Medicine → Aeronautics, aircraft |
| AMOOS | Advanced Maneuvering Orbit-to-Orbit Shuttle | In English | |
| AMSR | Advanced Microwave Scanning Radiometer | In English | → Earth sciences |
| AMU | Astronaut Maneuvering Unit | In English | |
| AMU | Attitude Match Update | In English | |
| ANARS | Autonomous Navigation and Attitude Reference System | In English | |
| ANS | Astronomical Netherlands Satellite | In English | → Astronomy |
| AOCS | Attitude and Orbit Control Subsystem | In English | |
| AOCS | Attitude and Orbit Control System | In English | |
| APCA | Aft Power Controller Assembly | In English | |
| API | Aerospace Performance Improvement | In English | → Aeronautics, aircraft |
| APM | Columbus Attached Pressurized Module | In English | |
| APS | Attitude Propulsion System | In English | |
| ARA | Attitude Reference Assembly | In English | |
| ARBl | Aerospace Research in Bulgaria | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| ARC | Ames Research Center | In English | → Research institutes → Aeronautics, aircraft → United States |
| ARCOMSAT | Arab League Communications Satellite | In English | → Telecommunications |
| ARGMA | Army Rocket and Guided Missile Agency | In English | → Military engineering |
| ARISTOTELES | Applications and Research Involving Space Technologies Observing the Earth's Field from Low Earth Orbiting Satellite | In English | → Astronomy → Earth sciences |
| ARS | Attitude Reference System | In English | |
| ARSDA | Advanced Radiation Space Defense Application | In English | |
| ArtSa | Artificial Satellites | In English | → Serial publications, periodicals |
| ARU | Attitude Reference Unit | In English | |
| AsAc | Astronautica Acta | In Latin | → Serial publications, periodicals |
| AsAer | Astronautics Aeronautics | In English | → Serial publications, periodicals → Aeronautics, aircraft |
| ASAL | Agence Spatiale Algérienne | In French | → Central administration → Algeria |
| ASAP | Aerospace Safety Advisory Panel | In English | → Aeronautics, aircraft |
| ASAT | Antisatellite | In English | |
| ASAT | Anti-Satellite System | In English | → Military engineering |
| ASATS | Antisatellite Simulation | In English | |
| ASC | American Satellite Corporation | In English | → United States |
| ASCA | Advanced Satellite for Cosmology and Astrophysics | In English | → Cosmology → Astronomy |
| ASCO | Arab Satellite Communications Organization | In English | → Organizations and associations → Telecommunications |
| ASCO | Arab Space Communications Organization | In English | → Organizations and associations → Telecommunications |
| ASCP | Attitude Set Control Panel | In English | |
| ASCP | Attitude Set/Control Panel | In English | |
| ASCS | Attitude Stabilization and Control System | In English | |
| ASE | Advanced Space Engine | In English | |
| ASE | Aerospace Support Equipment | In English | |
| ASGPD | Attitude Set and Gimbal Position Display | In English | |
| ASI | Augmented Spark Igniter | In English | |
| ASI | Augmented Spark Indicator | In English | |
| ASI | Augmented System Ignition | In English | |
| ASI | Agenzia Spaziale Italiana (www.asi.it) | In Italian | → Central administration → Astronomy → Italia |
| Asnau | Astronautik | In Russian | → Serial publications, periodicals |
| ASPOC | Active Spacecraft Potential Control | In English | |
| ASR | Agenţia Spaţială Română (www.rosa.ro) | In Romanian | → Astronomy |
| ASRM | Abort Solid Rocket Motor | In English | |
| ASRM | Advanced Solid Rocket Motor | In English | |
| ASRS | Automated Shuttle Requirement System | In English | |
| ASSESS | Airborne Science Shuttle Experiments System Simulation | In English | |
| ASTD | Advanced Space Technology Division | In English | → Astronomy |
| ASTER | Advanced Spaceborne Thermal Emission and Reflection | In English | |
| ASTG | Aerospace Test Group | In English | → Aeronautics, aircraft |
| ASTP | Apollo-Soyuz Test Project | In English | |
| ASTRA | Advanced Star Tracker | In English | → Astronomy |
| ASTRO | Ascent Trajectory Optimization | In English | → Aeronautics, aircraft |
| ATA | Ammonia Tank Assembly | In English | |
| ATAL | Alternate Transoceanic Abort Landing | In English | → Aeronautics, aircraft |
| ATCA | Attitude Translation Control Assembly | In English | |
| ATDRS | Advanced Tracking and Data Relay Satellite | In English | → Telecommunications |
| ATE | Aerospace Training Equipment | In English | → Aeronautics, aircraft |
| ATG | Aerospace Test Group | In English | → Aeronautics, aircraft |
| ATO | Abort To Orbit | In English | |
| ATS | Applications Technology Satellite | In English | |
| ATS | Advanced Technology Satellite | In English | |
| AVCS | Attitude and Velocity Control System | In English | |
| AVE | Aerospace Vehicle Equipment | In English | → Aeronautics, aircraft |
| AVHRR | Advanced Very High Resolution Radiometer | In English | → Meteorology, climatology → Marine research, oceanography |
| AVISO | Archiving, Validation and Interpretation of Satellites Oceanographic data (www.aviso.oceanobs.com) | In English | → Knowledge management → Marine research, oceanography |
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