倾转旋翼飞行器飞行力学模型研究

Flight dynamic mathematical model of tiltrotor aircraft

对倾转旋翼飞行器飞行力学模型的建立进行了理论研究。其中旋翼的气动模型,使用了非定常叶素理论,而对于机翼、尾翼和机身的气动力计算则采用了成熟的升力线理论模型。对于气动干扰的问题,则主要是考虑了机翼与旋翼的气动干扰。最后对算例飞行器不同模式下的飞行状态进行了飞行特性计算,验证了所建模型的合理性。

This paper summarized the status of the research and development of the tilt rotor aircraft firstly. Then, the flight dynamics model of the tilt rotor aircraft was established based on the research to the aerodynamic of the rotor and wing. Unsteady element theory was used to analyze the lift, drag, and moment of the rotor. The lift line theory was used to research the aerodynamics of the wing, fuselage, horizontal and vertical tails. The aerodynamic interference was considered. At last, the model was verified by the results of the trimming calculation in the helicopter mode and airplane mode.