| Acronym | Meaning |
 | PCCP | Preliminary Contract Change ProPosal |
| ELMS | Elastic Loop Mobility System |
| ESMC | ETR |
| CCU | Central Control Unit |
| PROM | Programmable Read-Only Memory |
| OPRV | Oxygen Pressure Relief Valve |
| ORD | Operational Ready Data |
| FQR | Flight Qualification Review |
| MPSR | Mission Profile Storage And Retrieval |
| SVDS | Space Vehicle Dynamic Simulator |
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