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基于六自由度方程对飞机的结冰飞行动力学问题进行了仿真研究。首先针对飞机遭遇结冰时的结冰飞行过程进行仿真,开发了一种结冰过程中飞机结冰严重程度及气动参数的计算方法。通过在各仿真时刻对飞机气动参数进行结冰影响修正以实现对飞机结冰飞行过程的模拟,同时分析了结冰过程对飞行特性的影响。进而对飞机结冰后带冰飞行时不同结冰严重程度下的操纵面阶跃响应进行了仿真,并对仿真结果进行了分析。
Based on six degrees of freedom equations, the simulation of the icing flight dynamics is carried out. Firstly, the simulation of the icing flying process when the plane encounters icing is carried out. A method of calculating the icing severity and the aerodynamic parameters of the icing is developed. By simulating the icing effect of the aerodynamic parameters of the aircraft at each simulation moment to simulate the icing flight, the influence of the icing process on the flight characteristics was also analyzed. Then the step response of control surface under different icing severity with ice flying after icing is simulated and the simulation results are analyzed.