| Acronym | Meaning |
 | OMS | Orbital Maneuvering System |
| MPESS | Multiple Purpose Experiment Support Structure |
| HTHL | Horizontal Takeoff Horizontal Landing |
| TOS | Transfer Orbit Stage |
| RAL | Rutherford-Appleton Laboratory |
| GST | Greenwich Sidereal Time |
| CRL | Communication Research Lab |
| RA | Right Ascension |
| IRAS | InfraRed Astronomical Satellite |
| AF | Air Force |
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