直升机飞行动力学实时仿真模型研究

进行直升机飞行仿真的关键是要有一个可信度高的直升机飞行动力学模型。飞行动力学模型的可信度取决于旋翼诱导速度模型。本文在推导直升机全机运动方程组的基础上,引入旋翼广义涡流理论表示旋翼的诱导速度分布,并推导出旋翼挥舞运动模型。把旋翼气动力模型结合到运动方程组中,给出了完整的飞行动力学仿真模型。并对某型无人直升机进行了仿真计算,计算结果与实际相符。

Research on Real-time Simulation Model of Helicopter Flight Dynamics

The key to helicopter flight simulation is to determine a reliable flight dynamics model.The reliability of flight dynamics model is decided by the model of rotor induced velocity.On the base of deducing helicopter motion equations,the rotor general vortex theory is combined,which represents the rotor induced velocity distribution,and the rotor flapping motion model is deduced.The entire flight simulation model is determined by combining rotor aerodynamics model with motion equations.A kind of remote-piloted helicopter is calculated using this model,whose result is consistent with reality.