| Acronym | Meaning |
 | FEM | Flight-Engineering Model |
| TAU | Thousand Astronomical Unit |
| SOFIA | Stratospheric Observatory For Infrared Astronomy |
| IFEA | Integrated Furnace Experiment Assembly |
| RF | Radio Frequency |
| OCTW | Optical Communications Through The Shuttle Window |
| AIRS | Atmospheric Infrared Sounder |
| ER | Eastern Range |
| DDTE | Design |
| VMS | Vertical Motion Simulator |
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