| Acronym | Meaning |
 | DCSP | Digital Control Signal Processor |
 | GA&CS | Ground Acquisition And Command Station |
 | ETLOW | External Tank Lift-Off Weight |
 | CIS | Communication Interface System |
 | EHP | EffectiveHorsepower |
 | NCC | Network Control Center (GSFC) |
 | PCR | Project Control Room |
 | R | Ratio |
 | BP | Coeff Icient |
 | PWMD | Printed Wiring Master Drawing |