| Acronym | Meaning |
| SBE | Sub-Bit Encoder |
| UBIC | Universal Bus Interface Controller |
| DE | Dynamics Explorer |
| SWT | Sextant |
| CSSE | Control System Simulation Equipment |
| OCF | Onboard Computational Facility |
| FFD | Functional Flow Diagram |
| RALPH | Reduction And Acquisition Of Lunar Pulse Heights |
| VDD | Verification Description Document |
| SPE | Solid Polymer Electrolysis |