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本文主要叙述飞机对离散突风的非定常动态响应数值计算法.对两架样机的计算表明,通常飞机设计中选用统一缓和因子的方法是不全面的.使用本方法可以计算出飞机对任意形态离散突风响应过程中的所有非定常气动力参数和飞行状态参数.它不仅能考核已有飞机的抗紊流能力,还可对新飞机的设计提供选择参数的指导性意见.计算还表明,在研究、分析飞机对高频离散紊流的动态响应时,使用本文介绍的非定常气动力技术,也是十分必要的.
This paper mainly describes the numerical calculation method of unsteady dynamic response of aircraft to discrete gusts.The calculation of two prototypes shows that the method of selecting the uniform mitigation factor is usually not comprehensive.This method can be used to calculate the aircraft to any shape It can not only evaluate the anti-turbulence ability of the existing aircraft, but also provide guidance for selecting the parameters of the new aircraft. The calculation also shows that, In the study and analysis of the aircraft’s response to high-frequency discrete turbulence, it is also necessary to use the unsteady aerodynamics described in this paper.