| Acronym | Meaning |
| DPP | Data Processing Software System |
| MTOGW | Maximum Takeoff Gross Weight |
| O&FS | Operations And Flight Support |
| EL | Engineering Instruction |
| VPF | Vertical Processing Facility |
| SDVF | Software DeveloPment And Verification Facilities |
| PPS | Pulse Per Second |
| DDDL | Digital Data Downlink |
| LN | Line |
| TPSE | Thermal Protection Subsystem Experiments |