| Acronym | Meaning |
| EMN | Engineering Management Network |
| H | LTLHigh Level Test Language |
| OPDAR | OPtical Detection And Ranging |
| SIT | Software Integrated Test |
| OGMT | Orbiter GreenwichMeanTime |
| MMCA | Mid Motor Controller Assembly |
| PM | Payload Management |
| V-BAR | Velocity Vectory Axis |
| FCPS | Fuel Cell Power System (Subsystem) |
| FDAI | Flight Director Attitude Indicator |