| Acronym | Meaning |
| LTD | Lift-to-Drag |
| ESTA | Escape System Test Article |
| PRS | Precision Ranging System |
| PIC | Preinstallation Checkout |
| PFCF | Payload Flight Control Facility |
| PRR | Program Requirements Review |
| FCSM | Flight Combustion Stability Monitor |
| ITS | Instrumentation Telemetry Station |
| RGA | Rate Gyro Assembly |
| APCS | Automated Project Control System - ARTEMIS |