| Acronym | Meaning |
| TVT | Thermal Vacuum Test |
| URA | Urine Receptacle Assembly |
| STLOS | Star Line Of Sight |
| BP | C/SCSCCost/Schedule Control Systems Criteria |
| SOC | Simulation Operation ComPuter |
| FSK | Frequency Shift Keyed (Keying) |
| DC | Design Change Authorization |
| ICB | Interim Change Bulletin |
| GHE | Gaseous Helium |
| HRDR | High Rate Digital Recorder |