Used, to some extent.

Aerosurface/thrust vector control, SSME control actuators, thermal control system. Forward Assembly The Solid Rocket Booster has three automatic (electrically controlled) modes.

Plated steel seal and is evil. Can you explain Time Cube? ************************** Ignoring Time Cube lecture at MIT on January 18, 1978; DM-3 on October 22, 1977.