Aeroelastic Modeling and Analysis of an Adaptive Wing
With the potential of improving flight performance in many aspects,adaptive wings have been investigated by numbers of researchers in recent years.and various concepts of adaptive wing structure have been developedl-4.The standard modeling methods application for deriving modal-based state-space equations for aeroelasticity in adaptive wings is necessary.However the major problem is that the deformations at and near the adaptive components might not be considered completely by the standard modal approach.This paper focuses on the aeroelastic modeling and analysis of an adaptive wing.Normal modal analysis were carried out firstly.The k-e method was used to analyze flutter and V-g and V-f curves were gained to assure the critical speeds without the actuation mechanism.The influence coefficient of unsteady aerodynamic was computed by Rogers approximation.The nonlinear aeroelastic in modal coordinate was analyzed by MATLAB programs and the effect of the response of aeroelastic was investigated.The results show that the freeplay may decrease critical flutter speed,lead to supercritical Hopf bifurcation and limit cycle oscillation of aeroelastic system.
adaptive wings nonlinear aeroelasticity unsteady aerodynamic flutter
Songdan Liu Daochun Li Jinwu Xiang
School of Aeronautic Science and Engineering,Beihang University,Beijing,100191,China
国际会议
南京
英文
1-5
2013-08-20（万方平台首次上网日期，不代表论文的发表时间）