一种基于环境预报数据的阵风建模方法

针对现有飞行器仿真试验自然环境模型,研究环境预报数据转换和处理方法;基于随机波浪理论,建立二元阵风紊流数学模型,并研究该模型的仿真建模方法;基于Davenport谱建立基于环境预报数据的阵风紊流模型,并引入到飞行器六自由度数学仿真试验中,得到阵风紊流对于飞行器飞行状态的影响情况。试验结果表明,阵风紊流对于飞行器攻角影响较大,对于飞行高度影响较小,利用阵风紊流模型开展飞行器航迹仿真试验切实可行。

One Turbulent Modeling Method Based on Environmental Forecast Data

Based on the existing natural environment model of aircraft simulation test,the method of conversion and processing for environmental prediction data is studied.Based on the random wave theory,the mathematical model of turbulent wind is established,and the simulation modeling method is studied.Based on Davenport spectrum,a turbulent wind model based on environmental prediction data is established and is introduced into the mathematical simulation experiment of a type of aircraft to obtain the influence of wind turbulent on the flight state of the aircraft.The experimental results show that the gust turbulence has a greater impact on the aircraft's angle of attack and a smaller impact on the flight height,and it is feasible to carry out flight path simulation test by using turbulent wind model.