基于试飞数据的固定翼飞机盘旋性能仿真分析技术

Simulation and Analysis Technology of Fixed-wing Aircraft Circling Performance Based on Flight Test Data

针对飞行试验过程中的盘旋性能分析问题,提出一种以试飞数据为基础的盘旋性能仿真分析方法。首先依据拉依达准则识别试飞数据中的异常值,并根据提出的移动基准区间牛顿插值方法对异常值修正;然后建立飞机盘旋运动的动力学计算模型,采用欧拉角法通过坐标变换矩阵求解飞机盘旋动力学方程,计算结果应用中心插值算法进行平滑处理。最后基于某型固定翼飞机实际飞行试验中记录的试飞数据进行算例分析,依据能量机动理论绘制完整的盘旋性能飞行包线,将理论计算结果与仿真结果进行对比表明了所建模型与仿真分析方法的有效性与正确性,为飞机的反馈设计及飞行性能的改进提供方法及依据,在工程实际应用上具有一定的可行性。

In order to the problem of analysis of circling performance in flight test,a simulation and analysis method was proposed based on flight test data.First,the outliers of flight test data were distinguished by PauTa criterion and corrected by Newton interpolation based on moving reference interval.After that the circling performance dynamics equation through coordinate transform matrix,the results were smoothed by central interpolation algorithm.Finally,the circling flight envelope was showed based on flight test data recorded in flight test according to energy maneuver theory and compared the theoretical calculation results and the simulation results.The comparison results verify the effectiveness and correctness of the model and the simulation analysis method,provide the feasibility in engineering practical application.