Flight Control System.
DEPARTMENT OF THE ARMY WASHINGTON DC
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A flight control system is provided for a helicopter furnishing safety feature, and providing back up control in the event of failure of controls of the rotary head swashplate of a helicopter. The swashplate is regulated by a series of actuators which are angularly positioned at particular settings around the swashplate. In the event of its failure, a supplemental system controls the selected settings for the swashplate, rotary head, and spar root and blade assemblies of the helicopter. Author