| Acronym | Meaning |
| SORTIE | Short Term Mission |
| RFPA | Request For Proposal Authorization |
| GPS | Gallons Per Second |
| FCP | Fuel Cell Power (Plant) |
| SADEC | SAEFspacecraft Assembly And EncaPsulation Facility |
| DK | DisplaY/Keyboard |
| LDS | Landing/Deceleration Subsystem |
| RPS | Record And Playback System (Subsystem) |
| CLS | Contingency Landing Site(s) |
| IV | Interior Upper Stage |