| Acronym | Meaning |
| MTC | Man Tended Capability |
| HV | High Voltage |
| MOL | Manned Orbiting Laboratory |
| IRAS | InfraRed Astronomical Satellite |
| VMF | Voenno-Morskoy Flot |
| DIRBE | Diffuse Infrared Background Experiment |
| MVI | Microgravity Vestibular Investigation |
| ACTS | Advanced Communications Technology Satellite |
| MSS | Multispectral Scanner |
| HRI | High Resolution Imager |