| Acronym | Meaning |
| OLSP | Orbiter Logistics Support Plan |
| RDR | Rudder |
| SSME | Space Shuttle Main Engine |
| ELS | Earth Landing System (Subsystem) |
| PSIG | Propulsion Systems Integration Group |
| PAM | Pulse Amplifier Modulation |
| RTAC | Research And Technology Advisory Committee |
| ETA | Explosive Transfer Assembly |
| W-G | Water-Glycol |
| DIAG | Diagonal |