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综合考虑随机性和不确定性构建了蒙特卡罗飞行仿真实验系统,探讨了蒙特卡罗飞行仿真实验的具体步骤;建立了结冰条件下基于四元数法的飞机本体六自由度运动方程;研究了结冰后人-机-环系统的动态响应,对直观反映结冰后运动状态的飞行参数进行了分析;基于相对速度和迎角超限构建了飞行风险发生的判定条件;量化研究了一维飞参极值样本的统计分布特性,结果表明二组极值样本的峰度系数均大于3,说明二组极值样本均有比正态分布更长的尾部,验证了相对速度极值和迎角极值均具有厚尾分布的特征。
Considering the stochastic and uncertainties, a Monte Carlo flight simulation experiment system was constructed, and the specific steps of the Monte Carlo flight simulation experiment were discussed. The six degrees of freedom equation of motion of the aircraft body was established based on the quaternion method in the icing condition. The dynamic response of human-machine-loop system after icing is studied, the flight parameters that directly reflect the post-icing condition are analyzed, the judgment conditions of flight risk are established based on the relative speed and the angle-of-attack overrun, The results show that the kurtosis coefficients of the two extreme value samples are all greater than 3, indicating that both extreme value samples have longer tails than the normal distribution, which verifies the relative velocity extreme value And the extreme angle of attack has the characteristics of thick tail distribution.