Dynamic Analysis of the Flapping Mechanism of Flapping Wing Aircraft

Abstract

In order to improve the design level of bionic flapping-wing aircraft, it is necessary to find out the influence of load undulating moment on the motor under the action of air undulating moment. This paper takes flapping-wing aircraft with a crank and rocker mechanism as a flapping mechanism as an example. Firstly, the kinematics model of the flapping mechanism is established, and the relative motion parameters are obtained. Secondly, the dynamic model of flapping-wing aircraft is deduced by using Lagrange dynamic equation. Then, based on the strip method, the aerodynamic moment of air to flapping aircraft is calculated, and the obtained aerodynamic moment is substituted into the dynamic model of the system, to calculate the torque fluctuation on the crank during the flapping flight of flapping aircraft by MATLAB. Finally, in order to verify the correctness of the model, ADAMS software is used to simulate the system, and the simulation results are consistent with the calculated results of the model, thus proving the correctness of the model.