| Acronym | Sense | Language | Topics |
|---|---|---|---|
| OSE | Orbital Support Equipment | In English | → Astronautics |
| OSF | Orbiter Simulation Facility | In English | → Astronautics |
| OSM | On-Orbit Spares Model | In English | → Astronautics |
| OSM | Orbiter Service Module | In English | → Astronautics |
| OSO | Orbiting Solar Observatory | In English | → Astronautics → Observatories → Solar system |
| OSOP | Orbiter Systems Operating Procedure | In English | → Astronautics |
| OSS | Office of Space Sciences | In English | → Astronomy → Astronautics |
| OSS | Orbiting Space Station | In English | → Astronautics |
| OSSA | Office of Space Science and Applications | In English | → Astronomy → Astronautics |
| OSSA | Office of Space Sciences and Applications | In English | → Astronomy → Astronautics |
| OSSIU | Orbiter-Space Station Interface Unit | In English | → Human-computer interaction → Astronautics |
| OSSRH | Orbiter Subsystem Requirements Handbook | In English | → Astronautics |
| OST | Orbiter Support Trolley | In English | → Astronautics |
| OSTA | Office of Space and Terrestrial Applications | In English | → Astronomy → Astronautics |
| OSTDS | Office of Space Tracking and Data Systems | In English | → Data → Astronautics |
| OSTO | Office of Space Transportation Operations | In English | → Astronautics |
| OSTP | Orbiting System Test Plan | In English | → Astronautics |
| OSTS | Office of Space Transportation Systems | In English | → Astronautics |
| OTA | Operational Trajectory Analysis | In English | → Aeronautics, aircraft → Astronautics |
| OTB | Orbiting Tanker Base | In English | → Astronautics |
| OTC | Orbiter Test Conductor | In English | → Astronautics |
| OTD | Orbiter Test Director | In English | → Astronautics |
| OTE | Orbital Transfer Equipment | In English | → Astronautics |
| OTLC | Orbiter Time Line Constraint | In English | → Astronautics |
| OTOS | Orbit-To-Orbit Stage | In English | → Astronautics |
| OTS | Orbital Test System | In English | → Astronautics |
| OTS | Orbital/Orbital Transfer System | In English | → Astronautics |
| OTV | Orbit Test Vehicle | In English | → Astronautics |
| OTV | Orbital Transfer Vehicle | In English | → Astronautics |
| OUT | Orbiter Utility Tray | In English | → Astronautics |
| OV | Orbital Vehicle | In English | → Astronautics |
| OV | Orbiter Vehicle | In English | → Astronautics |
| OVEI | Orbiter Vehicle End Item | In English | → Astronautics |
| OVNI | Objet Volant Non Identifié = OVNI | Objecte Volador No Identificat | In Catalan = НЛО | Неидентифициран летящ обект | In Bulgarian = OVNI | Objeto Volador No Identificado | In Spanish = UFO | Unidentifiziertes Flugobjekt | In German = UFO | Unidentified Flying Object | In English = UFO | Unknown Flying Object | In English = UFO | Uidentificeret flyvende objekt | In Danish = NIFO | Neidentigita Fluganta Objekto | In Esperanto = UFO | Unbekend fleanend objekt | In Frisian = עב"מ | עצם בלתי מזוהה | In Hebrew = OVNI | Oggetto Volante Non Identificato | In Italian = NLO | Neidentificēts lidojošs objekts | In Latvian = UFO | Uidentifisert flygende objekt | In Norwegian = UFO | Uidentifisert flygande objekt | In Nynorsk = NOL | Niezidentyfikowany Obiekt Latający | In Polish = OVNI | Objeto Voador Não Identificado | In Portuguese = OZN | Obiect Zburător Neidentificat | In Romanian = НЛО | Неопознанный летающий объект | In Russian = NLO | Neidentifikovani leteći objekat | In Serbo-Croatian |
In French | → Astronautics |
| OVNI | Objecte Volador No Identificat = НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Catalan | → Astronautics |
| OVNI | Objeto Volador No Identificado = НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Spanish | → Astronautics |
| OVNI | Oggetto Volante Non Identificato = НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Italian | → Astronautics |
| OVNI | Objeto Voador Não Identificado = НЛО, UFO, NIFO, עב"מ, NLO, NOL, OZN (look above) |
In Portuguese | → Astronautics |
| OZN | Obiect Zburător Neidentificat = OVNI, НЛО, UFO, NIFO, עב"מ, NLO, NOL (look above) |
In Romanian | → Astronautics |
| P&E | Propellant and Explosive | In English | → Astronautics → Chemical technology |
| P&SS | Planetary and Space Science | In English | → Serial publications, periodicals → Astronomy → Astronautics |
| PACA | Payload Accommodation Configuration Assessment | In English | → Astronautics |
| PACK | Payload Active Cooling Kit | In English | → Astronautics |
| PACRUSS | Passive and Active Control of Space Structures | In English | → Astronautics |
| PACS | Pointing and Attitude Control System | In English | → Astronautics |
| PAD | Propellant Acquisition Device | In English | → Astronautics |
| PADSIM | Precision Attitude Determination Simulation | In English | → Astronautics |
| PAF | Payload Attach Fitting | In English | → Mechanical engineering → Astronautics |
| PAFB | Patrick Air Force Base (www.patrick.af.mil) | In English | → 358 → Aeronautics, aircraft → United States |
| PAH | Payload Accommodations Handbook | In English | → Astronautics |
| PALS | Precision Approach and Landing System | In English | → Aeronautics, aircraft → Astronautics |
| PAM | Payload Assist Module | In English | → Astronautics |
| PAM | Propulsion Avionics Module | In English | → Aeronautics, aircraft |
| PAMELA | Payload for Antimatter Matter Exploration and Light-nuclei Astrophysics | In English | → Astronautics → Astronomy |
| PAP | Payload Accommodation Plan | In English | → Astronautics |
| PAP | Payload Adapter Plate | In English | → Astronautics |
| PAPG | Programm zur Auswertung von Pappgassenversuchen | In German | → Aeronautics, aircraft → Astronautics |
| PAPI | Precision Approach Path Indicator | In English | → Transport and postal services → Aeronautics, aircraft |
| PAR | Precision Approach Radar | In English | → Transport and postal services → Aeronautics, aircraft |
| PARACHUTE | Participation in RAndomized trials Compromised by widely Held beliefs aboUt lack of Treatment Equipoise | In English | → Traumatology → Aeronautics, aircraft |
| PAS | Payload Accommodation Study | In English | → Astronautics |
| PASS | Primary Avionics Software System | In English | → Software → Aeronautics, aircraft |
| PATH | Postflight Attitude and Trajectory History | In English | → Aeronautics, aircraft → Astronautics |
| PATS | Payload Avionics Test Station | In English | → Aeronautics, aircraft → Astronautics |
| PBD | Payload Bay Door | In English | → Mechanical engineering → Astronautics |
| PBDM | Payload Bay Door Mechanism | In English | → Mechanical engineering → Astronautics |
| PBK | Payload Bay Kit | In English | → Astronautics |
| PBL | Payload Bay Liner | In English | → Astronautics |
| PBS | Payload Berthing System | In English | → Astronautics |
| PBTS | Payload Bay Transfer System | In English | → Astronautics |
| PBV | Post Boost Vehicle | In English | → Military engineering → Astronautics |
| PCC | Payload Control and Checkout | In English | → Astronautics |
| PCCE | Payload Common Communication Equipment | In English | → Astronautics |
| PCDU | Payload Command Decoder Unit | In English | → Astronautics |
| PCF | Payload Control Facility | In English | → Astronautics |
| PCIL | Pilot-Controlled Instrument Landing | In English | → Aeronautics, aircraft → Astronautics |
| PCK | Payload Command Kit | In English | → Astronautics |
| PCOT | Payload Center Operations Team | In English | → Astronautics |
| PCR | Payload Changeout Room | In English | → Astronautics |
| PCR | Payload Checkout Room | In English | → Astronautics |
| PCR | Payload Clean Room | In English | → Astronautics |
| PCRS | Payload Cover Removal System | In English | → Astronautics |
| PCS | Probability of Crew Safety | In English | → Accidents, risks, safety → Aeronautics, aircraft → Astronautics |
| PCS | Payload Checkout System | In English | → Astronautics |
| PCS | Payload Control Subsystem | In English | → Astronautics |
| PCS | Payload Control Supervisor | In English | → Astronautics |
| PCTC | Payload Crew Training Complex | In English | → Education → Astronautics |
| PCTO | Payload Cost Tradeoff Optimization | In English | → Prices → Astronautics |
| PCU | Payload Checkout Unit | In English | → Astronautics |
| PCVL | Pilot-Controlled Visual Landing | In English | → Aeronautics, aircraft → Astronautics |
| PD&RS | Payload Deployment and Retrieval Subsystem | In English | → Astronautics |
| PDA | Payload Disconnect Assembly | In English | → Astronautics |
| PDA | Propellant Drain Area | In English | → Astronautics |
| PDD | Payload Description Document | In English | → Astronautics |
| PDI | Payload Data Interleaver | In English | → Astronautics |
| PDM | Payload Deployment Module | In English | → Astronautics |
| PDP | Payload Data Pack | In English | → Astronautics |
| PDP | Postinsertion Deorbit Preparation | In English | → Astronomy → Astronautics |
| PDRM | Payload Deployment and Retrieval Mechanism | In English | → Astronautics |
| PDRR | Payload Design Requirements Review | In English | → Astronautics |
| PDRS | Payload Deployment and Retrieval System | In English | → Astronautics |
| PDRS | Payload Data and Retrieval System | In English | → Astronautics |
| PDRSS | Payload Deployment and Retrieval System Simulation/Simulator | In English | → Astronautics |
| PDS | Pathfinder Demonstration Satellite | In English | → Astronautics |
| PDT | Payload Data Tape | In English | → Astronautics |
| PDU | Pilot Display Unit | In English | → Human-computer interaction → Aeronautics, aircraft → Astronautics |
| PE | Payload Element | In English | → Astronautics |
| PEA | Payload Electronics Assembly | In English | → Electronics → Astronautics |
| PEDB | Payload Engineering Database | In English | → Astronautics |
| PEFU | Payload Effects Follow-Up Study | In English | → Astronautics |
| PEGASUS | Partnership for a European Group of Aeronautic and Space Universities | In French | → Specialized or polytechnical colleges → Higher education, universities → Aeronautics, aircraft → Vehicle engineering |
| PEM | Payload Electronics Module | In English | → Electronics → Astronautics |
| PF | Payload Function | In English | → Astronautics |
| PF | Powered Flight | In English | → Aeronautics, aircraft → Astronautics |
| PFB | Payload Feedback | In English | → Astronautics |
| PFB | Payload Forward Bus | In English | → Computer architecture → Astronautics |
| PFC | Performance Flight Certification | In English | → Aeronautics, aircraft → Astronautics |
| PFC | Postflight Checklist | In English | → Aeronautics, aircraft → Astronautics |
| PFC | Preliminary Flight Configuration | In English | → Aeronautics, aircraft → Astronautics |
| PFCF | Payload Flight Control Facility | In English | → Astronautics |
| PFCS | Primary Flight Control System | In English | → Aeronautics, aircraft → Astronautics |
| PFK | Payload Function Key | In English | → Astronautics |
| PFL | Propulsion Field Laboratory | In English | → Research institutes → Aeronautics, aircraft → Astronautics |
| PFP | Powered Flight Program | In English | → Aeronautics, aircraft → Astronautics |
| PFRT | Preliminary Flight Rating Test | In English | → Aeronautics, aircraft → Astronautics |
| PFS | Primary Flight Software | In English | → Software → Aeronautics, aircraft → Astronautics |
| PFS | Primary Flight System | In English | → Aeronautics, aircraft → Astronautics |
| PFT | Postflight Testing | In English | → Aeronautics, aircraft → Astronautics |
| PFTA | Payload Flight Test Article | In English | → Aeronautics, aircraft → Astronautics |
| PGHM | Payload Ground Handling Mechanism | In English | → Astronautics |
| PGOC | Payload Ground Operations Contract(or) | In English | → Astronautics |
| PGOR | Payload Ground Operations Requirement | In English | → Astronautics |
| PGORS | Payload Ground Operations Requirements Study | In English | → Astronautics |
| PGSC | Payload and General-Support Computer | In English | → Computer hardware → Astronautics |
| PGSE | Payload Ground Support Equipment | In English | → Astronautics |
| PhASp | Physics and Astrophysics from Spacelab | In English | → Serial publications, periodicals → Physics → Astronomy → Astronautics |
| PHD | Payload Handling Device | In English | → Astronautics |
| PHF | Payload Handling Fixture | In English | → Astronautics |
| PHILEAS | Packaging Hermétique Intégré fiabLE Avancé sur Silicium | In English | → Electronics → Astronautics |
| PHP | Payload Handling Panel | In English | → Astronautics |
| PHP | Planetary Horizontal Platform | In English | → Astronomy → Astronautics |
| PHRR | Payload High-Rate Recorder | In English | → Astronautics |
| PHS | Payload Handling Station | In English | → Astronautics |
| PHS | Payload Handling System | In English | → Astronautics |
| PHSF | Payload Hazardous Servicing Facility | In English | → Astronautics |
| PI | Payload Interrogator | In English | → Astronautics |
| PIA | Payload Interface Adapter | In English | → Astronautics |
| PIC | Payload Integration Center | In English | → Astronautics |
| PIC | Payload Integration Committee | In English | → Astronautics |
| PICC | Payload Interface Control Computer | In English | → Computer hardware → Human-computer interaction → Astronautics |
| PIDA | Payload Installation and Deployment Aid | In English | → Astronautics |
| PIE | Payload Integration Equipment | In English | → Astronautics |
| PIE | Payload Interface Engineer | In English | → Astronautics |
| PIF | Payload Integration Facility | In English | → Astronautics |
| PILS | Payload Integration Library System | In English | → Astronautics |
| PILS | Payload Interactive Library System | In English | → Astronautics |
| PIM | Payload Integration Manager | In English | → Astronautics |
| PINCH | Payload Integration Nominal Cost Hardware | In English | → Computer hardware → Astronautics |
| PIO | Pilot-Induced Oscillation | In English | → Aeronautics, aircraft → Astronautics |
| PIOP | Payload Integration Operations Plan | In English | → Astronautics |
| PIP | Payload Integration Plan | In English | → Astronautics |
| PIP | Payload Interface Plan | In English | → Astronautics |
| PIRCS | Payload Interactive Requirements Collection System | In English | → Astronautics |
| PITG | Payload Integration Task Group | In English | → Astronautics |
| PITS | Payload Integration Test Set | In English | → Astronautics |
| PITS | Payload Interface Test System | In English | → Astronautics |
| PIVR | Payload Interface Verification Requirement | In English | → Astronautics |
| PIVS | Payload Integration and Verification Simulator | In English | → Astronautics |
| PIVS | Payload Interface Verification Summary | In English | → Astronautics |
| PL | Payload | In English | → Astronautics |
| PL | Postlanding | In English | → Aeronautics, aircraft → Astronautics |
| PL | Prelaunch | In English | → Astronautics |
| PL | Propellant Loading | In English | → Astronautics |
| PLA | Parachute Location Aid | In English | → Aeronautics, aircraft → Astronautics |
| PLACE | Position Location Aircraft Communications Equipment | In English | → Aeronautics, aircraft |
| PLAN | Payload Activity Network | In English | → Astronautics |
| PLB | Payload Bay | In English | → Astronautics |
| PLBD | Payload Bay Doors | In English | → Astronautics |
| PLBD | Payload Bay Door | In English | → Astronautics |
| PLC | Propellant Loading Console | In English | → Astronautics |
| PLCC | Payload Launch Control Center | In English | → Astronautics |
| PLDF | Payload Data File | In English | → Files → Astronautics |
| PLH | Payload Handling | In English | → Astronautics |
| PLHX | Payload Heat Exchanger | In English | → Energy economics → Astronautics |
| PLI | Propellant-Level Indicator | In English | → Astronautics |
| PLIC | Payload Intelligent Controller | In English | → Astronautics |
| PLIM | Payload Installation Mechanism | In English | → Astronautics |
| PLIM | Propellant Linear Insulation Matrix | In English | → Astronautics |
| PLIMHR | Payload Integration Management Hardware Review | In English | → Management → Computer hardware → Astronautics |
| PLIMR | Payload Integration Management Review | In English | → Management → Astronautics |
| PLINS | Payload Integration Schedule | In English | → Astronautics |
| PLM | Payload Management | In English | → Astronautics |
| PLM | Payload Monitoring | In English | → Astronautics |
| PLPS | Propellant Loading and Pressurization System | In English | → Astronautics |
| PLRV | Payload Launch Readiness Verification | In English | → Astronautics |
| PLS | Payload Simulator | In English | → Astronautics |
| PLS | Payload System | In English | → Astronautics |
| PLS | Personnel Launch System | In English | → Aeronautics, aircraft → Astronautics |
| PLS | Postlanding and Safing | In English | → Aeronautics, aircraft → Astronautics |
| PLS | Primary Landing Site | In English | → Aeronautics, aircraft → Astronautics |