| Acronym | Meaning |
| FC | Fuel Cell |
| HD | Heavy Duty |
| QSMVT | Quarter Scale Model Vibration Testing |
| SP | Static Pressure |
| GCU | General Control Unit |
| SPIDPO | Shuttle Payload Integration And Development Program Office |
| GASPI | Guidance Attitude Space Position Indicator |
| DN | Down |
| DCC | Digital Communications And Control Unit |
| TPM2 | Terminal Phase Midcourse #2 |