| Acronym | Meaning |
 | REQN4TS | Requirements (RQN4TS Preferred) |
| VGIMU | Velocity To Be Gained As Related To IMU Orientati |
| TD | Test Director (NASA) |
| RBDE | Radar Bright Display Equipment |
| RTU | Renote Terminal Unit |
| HOLC | High Order Language Computer |
| IARS | Independent Air Revitalization System |
| FCOS | Flight Control Operational Software |
| PP | Partial Pressure |
| BP | Centigrade |
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