| Acronym | Meaning |
 | SSRN | System Software Reference Number |
| VSA | Verification Site Approval |
| UMVF | Unmanned Vertical Flight |
| MLR | Monodisperse Latex Reactor |
| LCU | Line Coupling Unit |
| MCU | Mission Control Unit |
| SOLS | Spacelab/Orbiter Interface Simulator |
| OCD | Operational Capability Development |
| TS | Serial Traceability |
| SCF | Sequenced Compatibility Firing |
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