| Acronym | Meaning |
| PROPLT | Propellant |
| PSE | Payload Support Equipment |
| DRM | Design Reference Mission |
| TVCS | Thrust Vector Control System |
| RCY | Recovery |
| SBTC | Speed Brake/Thrust Controller |
| MSCR | Measurement/Stimuli Change Request |
| OMPT | Observed Mass Point Trajectory |
| GT | Greater Than |
| PDV | Pressure Disconnect Valve |