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本文采用分析飞行参数时间历程灵敏度的方法,研究大迎角时因纵向参数而产生的偏航导数对于飞行稳定性的影响。文章对大迎角时产生的附加偏航导数进行了估值,然后通过比较包含或不包含这些特定导数或导数组合的时间历程,来考查这些导数对飞机大迎角飞行稳定性的不同影响。分析表明,某些附加导数对飞行稳定性影响严重。掌握与此有关结论对飞仉大迎角气动设计有着重要的意义。
In this paper, the method of analyzing the sensitivity of time history of flight parameters is used to study the influence of yaw derivation due to longitudinal parameters at high angles of attack on flight stability. The article estimates the additional yaw derivatives at high angles of attack and then examines the different effects of these derivatives on the flight stability at high angles of attack by comparing the time histories with or without these particular derivatives or derivative combinations. Analysis shows that some additional derivatives have a serious impact on flight stability. It is of great significance to master the relevant conclusions to the aerodynamic design of the high angle of attack.