| Acronym | Meaning |
 | DACS | Digital Acquisition And Control System |
| EVSU | Extravehicular Space Unit |
| EREP | Earth Resources Package |
| VU | VolumeUnit |
| ENT | Entry |
| HSG | High Sustained Gs Acceleration |
| BFC | Backup Flight Control |
| OPR | Operations Planning Review |
| IPS | IRD Information Requirements Document |
| PA | Pad Abort |
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