| Acronym | Meaning |
| UPPP | Union Pour La Promotion De La Propulsion Photonique |
| UVPI | Ultraviolet Plume Instrument |
| FRSI | Flexible Reusable Surface Insulation |
| FAP | Freedom Attached Payloads |
| GGM | Goskogidromet/Gidromettsentr |
| RHC | Rotational Hand Controller |
| CCSDS | Consultative Committee For Space Data Systems |
| ATO | Abort To Orbit |
| PMIRR | Pressure Modulated InfraRed Radiometer |
| PSF | Point Spread Function |