| Acronym | Meaning |
| TTCA | Thrust Translation Controller Assembly |
| O/R | Outside Radius |
| HMC | Hypergolic Maintenance And Checkout |
| TAP | Telemetry Acceptance Pattern |
| HID | Hardware Interface Device |
| TX/RX | Transmitter/Receiver |
| PORR | Preliminary Operat Ons Requirements Review |
| R | Regulate |
| CWG | Constant Wear Garment |
| RBE | Radiation Biological Effectiveness |