| Acronym | Meaning |
| IMU | Inertial Measurement Unit |
| SRD | Shuttle Requirements Definition |
| HZ | Hertz (Cycles Per Second) |
| PMP | Pump |
| SEADS | Shuttle EntrY Air Data System (Subsystem) |
| PCI | Peripheral Controller Interface |
| O/R | Outside Radius |
| MTL | Material |
| NCC | Network Control Center (GSFC) |
| LMS | Load Measurement System |