| Acronym | Meaning |
| PR | PressureRegulator |
| PUGS | Propellant Utilization And Gaging System |
| IDSD | Institutional Data System Division (JSC) |
| VIDD | Vertical Interval Data Detector |
| SDPC | Shuttle Data Processing Complex |
| Q | Dynamic Pressure |
| RT | ReferenceTrajectory |
| SDRD | SuPplier Data Requirements Description |
| OME | Orbital Main Engine |
| TWTA | Traveling Wave Tube Amplifier |