| Acronym | Meaning |
| HSG | High Sustained Gs Acceleration |
| PCMMU | Pulse-Code Modulation Master Unit |
| FSD | Full Scale Development |
| HHMU | Hand Held Maneuvering Unit |
| CLS | Contingency Landing Site(s) |
| DTS | Data Transfer System |
| SEB | Support Equipment Building |
| USN | United States Navy |
| CCIM | Command Computer Input Multiplexer |
| SV | State Vector |