| Acronym | Meaning |
| THEO | Theoretical |
| DPP | Data Processing System (Subsystern) |
| TB | Toggle Buffer |
| BSDP | Booster Stage Discharge Pressure |
| IDRD | Information Definition Requirements Document |
| PIND | Particle Impact Noise Detection |
| EP | Electrical Power |
| NWT | Nonwatertight |
| SMSI | Standard Manned Space Flight Initiator |
| CMPTD | Computed |