| Acronym | Meaning |
 | TSPK | Tsentr Podgotovka Kosmonavti |
| APM | Atmospheric Particle Monitor |
| FRED | Space Station Freedom |
| CNO | Carbon-Nitrogen-Oxygen |
| MDSSC | McDonnell Douglas Space Systems Corp |
| LH | Liquid Hydrogen |
| HTVL | Horizontal Takeoff Vertical Landing |
| PEM | Payload Electronics Module |
| C&T | Communications & Tracking |
| ATM | Apollo Telescope Mount (on Skylab) |
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