基于试飞数据的飞行模拟器气动模型校核

Flight simulator aerodynamic model calibration based on flight test data

为了提高飞行模拟器气动模型模拟的逼真度和置信度,提出了一种模拟器气动模型校核方法。采用先校核纵向、再校核横航向,先校核稳态、再校核动态的思路,通过对比试飞数据与仿真模型相关参数来修正引起偏差的气动导数项;综合分析不同状态点修正系数存在的统计规律,形成可用于飞行仿真解算的气动参数修正模型。试飞数据验证表明,校核后的仿真气动模型能满足模拟器客观测试规范要求,显著提高了气动模型模拟的逼真度。

In order to improve the fidelity and confidence of the flight simulator aerodynamic model,a simulator aerodynamic model calibration method was proposed. The idea adopted was that the lateral-directional direction was calibrated after the longitudinal direction,and the dynamic-state was calibrated after the steady-state. By comparing the related parameters of the flight test data and the simulation model,the aerodynamic derivatives which caused deviation were corrected. And then,statistical law was analyzed synthetically based on correction factors of different state points and aerodynamic parameters correction model was established which can be used in flight simulation. Verified by a large number of flight test data,the simulator model after calibration can meet the requirements of the simulator objective test standard,and significantly improve the fidelity of the simulation model.