| Acronym | Meaning |
 | TT | Total Temperature |
| PSF | Processing And Storage Facility (ET) |
| FR | Firing Room |
| VGIMU | Velocity To Be Gained As Related To IMU Orientati |
| FTR | Functional Test Requirement |
| MPVA | Main Propellant Valve Actuator |
| USRA | Universities Space Research Association |
| USS | United States Standard |
| EIVT | Electronic Installation Verification Test |
| NWT | Nonwatertight |
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