Abstract: An improved thrust vector control system for steering and controlling an aerospace vehicle propelled by a reaction type motor. The improved thrust vector control system simultaneously rotates and laterally translates the reaction motor with respect to the longitudinal axis of the vehicle. This complex motion of the reaction motor generates sufficiently large control moments that allows the reaction motor to be moved very close to the center of gravity of the vehicle. As a result, the vehicle can be shortened and the structure that is typically required to position the reaction motor at a swivel point farther aft eliminated.