Design and strength simulation of hub mechanism of variable pitch propeller

Abstract

The hub mechanism is an important force bearing mechanism of variable pitch propellers and an important actuator of variable pitch control in tilting ducted propeller UAV. To solve the problem of the connection between the blades and the fuselage of the tilting ducted propeller UAV, according to the parameters of the blades, the force of the hub mechanism is analyzed, and the design parameters of the hub mechanism are obtained by using the theoretical calculation method, such as the power density method. The strength of the parts is analyzed by using the finite element method. A variable-pitch propeller hub mechanism was developed for tilting ducted unmanned aerial vehicles. A design flow of the hub mechanism is formed, including the design of the parts of the hub mechanism and the strength check. This will facilitate the design and development of ducted UAVs.