| Acronym | Meaning |
| HEM | Hitchhike Experiment Module |
| SRCH | Search |
| DAF | Data Acquisition Facility |
| PSM | Phase Sensitive Modulator |
| MPHE | Material And Personnel Handling EqLjipment |
| HSG | High Sustained Gs Acceleration |
| RPTA | Rudder Pedal Transducer Assembly |
| MS | Multistring |
| IDP | Integrated DataProcessor |
| GCOS | Ground Computer Operating System |