Spaceflight Abbreviations and Acronyms

1. RAE
   Royal Aerospace Establishment
2. RAI
   Radar Altimeter Indicator
3. RAI
   Roll Attitude Indicator
4. RALPH
   Reduction and Acquisition of Lunar Pulse Heights
5. RALT
   Radar Altimeter
6. RAPCON
   radar approach and control
7. RCS
   Reentry Control System
8. RDS
   Rocketdyne Digital Simulator
9. REM
   Rocket Engine Module
10. REN RAD
    Rendezvous Radar
11. RENRAD
    Rendezvous Radar
12. RHS
    Rocketdyne Hybrid Simulator
13. RIAPS
    Remote Infrared Atmospheric Profiling System
14. RJ
    Reaction Jet
15. RJ/EC
    Reaction Jet/Engine Control
16. RJC
    Reaction Jet Control
17. RJD
    Reaction Jet Driver
18. RJD
    Reaction Jet Device
19. RJDA
    Reaction Jet Driver Aft
20. RJDF
    Reaction Jet Driver Forward

Last updated: May 24, 2020 — Total entries: 1,156