| Acronym | Meaning |
| PFB | PayloadFeedback |
| ECLSS | Environmental Control And Life Support System |
| DMIS | Data Management Information System |
| PIAR | Project Impact Analysis Report |
| CWS | Caution And Warning System |
| OP | Oxygen Purge |
| HDA | Housekeeping Data Acquisition |
| FRL | Frame Reference Line |
| SQ | FtSquare Feet |
| PU | Propellant Unit |