For fun, here's the part probably in question: http://jasc-controls.com/jasc-industry-listing/space/space-actuators/thrust-vector-control-actuator-part-101424-

For fun, here's the part probably in question: http://jasc-controls.com/jasc-industry-listing/space/space-actuators/thrust-vector-control-actuator-part-101424-5/ http://jasc-controls.com/jasc-industry-listing/space/space-a... A servo-controlled hydraulic linear actuator with redundant coils in the servomotor. Probably runs using the RP-1 fuel as hydraulic fluid.