飞机失速/尾旋特性飞行仿真方法研究

摘要

针对飞机失速/尾旋特性飞行仿真中的一些关键问题，包括气动力建模、风洞试验数据使用和飞行动力学模型建模等，提出了相应的解决方法：采用多维数据组形式的非线性气动力模型建模；对于组合舵偏的旋转效应的附加气动力，采用单舵偏叠加的方法得到风洞试验数据；飞行动力学模型必须采用六自由度仿真模型等。将这些方法应用于某算例飞机并进行了飞机的失速、尾旋仿真计算，仿真得到的失速、尾旋进入和改出方法同自由飞试验的进入和改出方法吻合，表明该方法可以应用于工程仿真。%This paper was focused on solutions to the flight simulation for the stall and spin of airplane, such as modeling of the aerodynamics and flight dynamics and the application of wind tunnel test data. To cope with these problems, used corresponding methods, including nonlinear aerodynamics modeling approach using multidimensional data sets; using wind tunnel test data coming from the method of single control surface deflection superposition as additional aerodynamics of combination control surfaces and flight dynamics modeling based on six-freedom simulation model. Applying these methods, carried out numerical simulation of one aircraft’s stall and spin. The simulation results show the methods entry into and recovery from stall and spin are similar to the methods of model free flight and the methods of this paper can be used to engineering simulation.