| Acronym | Meaning |
| IHX | Interloop Heat Exchanger |
| PAR | Product Acceptance Review |
| EID | End Item Documentation |
| ATCS | Active Thermal Control System |
| COMMAND | Computer Command Engineer |
| R | ETSReconfigurable Electrical Test Stand |
| NWS | National Weather Service |
| G&C | Guidance And Control |
| IPS | IRInclination Of The Ascending Return |
| SEB | SYstems Engineering Branch |