Distributed Electric Tail Rotors With Flight-Based Power Allocation

The patent replaces the traditional mechanical linkage system with an electrically distributed yaw control system using independent electric motors for each tail rotor. This substitution allows precise control of rotational speed, enabling the system to reduce angular velocity during forward flight when aerodynamic response is less critical, thereby reducing noise and power consumption while maintaining adequate control authority through electrical actuation

The patent implements variable speed control for tail rotors based on flight conditions. During hover, tail rotors operate at high angular velocities to provide adequate aerodynamic response. During forward flight, the system dynamically reduces rotational speed to minimize noise and power consumption while maintaining sufficient yaw control capability through the electric motor system

The patent implements dynamic power allocation that adjusts power distribution to tail rotors based on flight mode and operational requirements. During hover, full power is allocated to maintain high rotational speeds. During forward flight, power allocation is reduced as lower rotational speeds suffice for yaw control. This dynamic approach allows the use of smaller power sources that can deliver peak power when needed rather than continuously sized for maximum peak output

The patent changes the operational parameters of tail rotors by controlling rotational speed according to flight conditions. By varying the speed parameter from high during hover to lower during forward flight, the system reduces peak power demands, enabling the use of smaller, lighter power sources while maintaining adequate performance across different flight modes

The patent applies local quality by independently controlling each tail rotor's power allocation based on its specific operational requirements and flight conditions. The power management system evaluates the contribution of each tail rotor to yaw control and allocates power locally to each motor, ensuring that rotors operating in less critical conditions consume less power while maintaining overall system reliability and control authority

The patent dynamically adjusts operational parameters (rotational speed, power allocation) for each individual tail rotor based on flight mode and control requirements. This parameter optimization ensures that multiple tail rotors operate efficiently with balanced power consumption, preventing the efficiency degradation that occurs when all rotors operate at identical high power levels regardless of actual control needs