Nonlinear Flutter Studies on Control Surface Freeplay  

操纵面间隙非线性颤振研究

作　　者：ZHAO Dongqiang YANG Zhichun HUANG Guoning CHEN Hai MA Xiang 赵冬强;杨智春;黄国宁;陈海;马翔(西北工业大学航空学院,西安710072;航空工业第一飞机设计研究院,西安710089)

机构地区：[1]School of Aeronautics,Northwestern Polytechnical University,Xi’an 710072,P.R.China [2]The First Aircraft Institute of AVIC,Xi’an 710089,P.R.China

出　　处：《Transactions of Nanjing University of Aeronautics and Astronautics》2022年第3期291-303,共13页南京航空航天大学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.11972296)。

摘　　要：The frequent occurrence of control surface vibration has become one of the key problems affecting aircraft safety. The source of the freeplay of the control surface is studied,and a measurement device is developed. A nonlinear flutter analysis method under trimmed flight condition is proposed based on the discrete state-space method.Consequently,the effects of center-type freeplay and the freeplay with preload on flutter characteristics are analyzed,and the effects of preload on nonlinear flutter are verified by wind tunnel tests of a single wing model.操纵面振动问题的频繁发生是影响飞机飞行安全的一个关键因素。为此,本文研究了操纵面间隙的来源,研制了一种间隙测量装置。提出了一种基于离散状态空间法的配平飞行条件下的非线性颤振分析方法。分析了中心型间隙和预载间隙对颤振特性的影响,并通过单机翼模型风洞试验验证了预载对非线性颤振的影响。

关 键 词：freeplay NONLINEARITY FLUTTER PRELOAD wind tunnel test 

分 类 号：TN925[电子电信—通信与信息系统]