| Acronym | Meaning |
| AO | Assembly Order |
| FHP | Fuel High Pressure |
| STADAC | Station Data Acquisition And Control |
| LF | Launch Forward |
| CCA | Contract Change Authorization |
| HFO | High Frequency Oscillator |
| RFO | Request For Order |
| FACO | Factory Assembly And Checkout |
| MIMOSA | Mission Modes And Space Analysis |
| ITO | Integration And Test Order |