| Acronym | Meaning |
| PSS | Propellant Supply Subsystem |
| DACBU | Data Acquisition And Control Buffer Unit |
| RTCS | Real-Time Computer System |
| EDCP | Engineering Design Change ProPosal |
| K-MMSEM | KSC MMSE Plan/Requirement |
| BSDP | Booster Stage Discharge Pressure |
| RS | Redundant Set (computers) |
| SAA | Safety Assurance Analysis |
| SERVO | Servomechanism |
| VAC | Vacuum |