| Acronym | Meaning |
| PT | Advanced Planning And Technology Office (KSC Dir.) |
| SRS | Specification Revision Sheet |
| VPF | Vertical Processing Facility |
| IP | Instrumentation/pulse Code Modulation Master Unit Data Bus |
| VGZ | Velocity To Be Gained (Body Z-Axis) |
| TOI | Transfer Orbit Insertion |
| GCU | Generator Control Unit |
| CPF | Cost Per Flight |
| RHC | Right Hand Circular |
| PSIG | Propulsion Systems Integration Group |