| Acronym | Meaning |
| ICD | Interface Control Document |
| PRCBD | ProgramReview Control Board Directive |
| HOSC | Huntsville Operations Support Center |
| PDM | Pulse Duration Modulation |
| POGO | Pilot Operational EquiPment |
| COBE | Cosmic Background Explorer |
| RAU | Remote Acquisition Unit |
| RVCF | Remote Vehicle Checkout Facility |
| OPOV | Oxidizer Preburner Oxidizer Valve |
| MS | Multistring |