| Acronym | Meaning |
 | MPTA | Main Propulsion Test Article |
| HUT | Hard Upper Torso |
| LEM | Laboratory Environment Model |
| SE&I | SYstems Engineering And Integration |
| FDI | Failure Detector Indicator |
| DECOM | Decommutate |
| INTRG | Interrogate |
| MSID | Measurement Stimulation Identification |
| ATLAS | Atmospheric Laboratory For Applications And Science |
| LOS | Line Of Sight |
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