| Acronym | Meaning |
 | FSD | Flight Simulation Division (JSC) |
| OV | Orbiter Vehicle |
| MERSAT | Meteorology And Earth Observation Satellite |
| EM | Engineering Model |
| IPS | IRIG Inertial Rate Integrating Gyro |
| IUS | Inertial Upper Stage |
| CSTS | Cryogenic Storage And Transfer System |
| DME | Distance-measuring Equipment |
| IOA | Input/Output Or Assembly |
| NDI | Nondestructive Inspection |
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