| Acronym | Meaning |
| TPF | Terminal Phase Finish |
| MECF | Main Engine Computational Facilities |
| LPM | Lines Per Minute |
| RIC | Rockwell International Corporation |
| HYD | HYdraulics |
| TSS | TPS Summary Sheet Control |
| PT | Point |
| ICC | Interstate Commerce Commission |
| TT&C | Tracking Telemetry And Control |
| EOM | Equations Of Motion |