Power flow analysis of compound planetary gear trains in flight leading edge flaps

Abstract

Geared rotary actuators in the leading edge flaps of an aircraft are usually composed of compound planetary gear sets with high reduction ratio. A new method using hypergraph in the power flow analysis of compound planetary gear sets in geared rotary actuator is proposed. The equation establishment method of kinematics and torques based on hypergraphs is investigated and the circulating power calculation approach is studied as well. A GRA on the aircraft was taken as an example to highlight the method.