Abstract: A hollow beam is supported in cantilever fashion at one end on a frame and has laterally spaced rail flanges along its lower edges. A carriage has rollers on each corner which are supported on the rail flanges. A cable drum extends longitudinally of the carriage and is rotatable relative to the carriage. A shaft having a square cross section extends through the drum and the carriage and is rotatably supported at its ends by the beam. Rollers at each end of the drum and transverse to the shaft roll along the sides of the shaft. A motor mounted on the frame is connected to rotate the shaft and the drum thereon. A cable wound on the drum is connected to the center of a rigid hanger. Flexible suspension cables of equal length hang from the ends of the hanger and connect to the corners of a rectangular seat frame.

Abstract: A control augmentation system for stabilization and control of flight vehes, wherein control of vehicle angular velocities in proportion to control input is effected, and where stabilization of the corresponding vehicle attitude is also effected. The system consists of both feedforward and feedback signal paths. The feedback paths provide augmentation of the vehicle's inherent stability. The feedforward paths augment the controllability factors available to the pilot. The control augmentation system is a solution to hingeless rotor control problems.