| Acronym | Meaning |
 | DCX | Delta Clipper EXperimental |
| MCC | Mission Control Center |
| HPOTP | High Pressure Oxidizer Turbopump |
| PEM | Payload Electronics Module |
| LERC | Lewis Research Center |
| ISU | International Space University |
| GEODSS | Ground-based Electro-optical Deep-space Surveillance System |
| EUMETSAT | European Meterological Satellite Organisation |
| OCTW | Optical Communications Through The Shuttle Window |
| BFS | Backup Flight System |
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