| Acronym | Meaning |
| LH2 | Liquid Hydrogen |
| DC | Design Change Authorization |
| MMC | Martin Marietta Corporation |
| PRR | Preliminary Requirements Review |
| SOP | Subsystem(s) Operating Procedure |
| CHAR | Character |
| CDSC | Communications Distribution And Switching Center |
| FOP | Flight Operations Plan |
| PPB | Program Performance Baseline |
| M | Isc Miscel Laneous |