K-1 Vehicle: Main Propulsion System
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Integrated Electro-Mechanical Actuator,
Loop Closure Unit, and Main
Engine Control Testing
  Electro-Mechanical Actuators
for engine Throttle and
Mixture Ratio Control
  GenCorp Aerojet supplies the propulsion system for the K-1 Vehicle. The propulsion system consists of the main engines, orbital maneuvering system, attitude control system, and associated pressurization and control systems.