飞机对离散突风的动态响应

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.

Dynamic Response of Aircraft on Discrete Gust

This paper mainly describes the computing method of unsteady dynamic response on discrete gust. The computational results from two aircraft show that the uniform relaxation factor commonly used in aircraft design is not perfect.The method presented in this paper can be used to compute all the unsteady aerodynamic and flight state parameters of aircraft response on arbitrary discrete gust. It can not only check an aircraft on antiturbulence performance but also supply directive opinions on how to choose parameters for a new aircraft under design.The computational data show that it is necessary to use the unsteady aerodynamic technique for studying and analyzing the dynamic response of an aircraft on discrete gusts of high frequency