| Acronym | Meaning |
| SPEE | Special Purpose End Effector |
| IPS | IRN Interface Revision Notice |
| MRL | Material Requirements List |
| BS | Block Specification |
| HMCC | Hypergolic Maintenance And Checkout Cell |
| EES | Emei@gency Ejection Suits |
| EMU | Extravehicular Mobility Unit |
| PSA | PowerServoAssembly |
| RTD | Resistance Temperature Device |
| CNTRL | Control |