YAW CONTROL SYSTEM FOR AN AIR VEHICLE

摘要

An air vehicle having a pair of contrarotating rotors is provided with a yaw control system including a variable clutch operatively associated with a differential gearbox in such a manner that the energization of the clutch will produce a variation in the relative speeds of rotation and torques of two rotating elements driven by the differential gearbox and drivingly connected to a respective one of each of the two contrarotating rotors.