Flutter Influence Mode Analysis of High speed Wing Model
In flutter wind tunnel test,the matching degree between scaled model and prototype would directly affect the reliability of test results.It is difficult to achieve completely dynamic similarity because of some material or technological constrains,and only lower order modes including mode shape and frequency are accurately simulated to construct a compromised model.Theoretical support would be necessary to answer the question which modes must be simulated to guarantee data validity of wind tunnel flutter test.An analytical study of a sweepback wing has been undertaken to estimate the flutter influence mode needed for accurate flutter prediction by analyzing generalized aerodynamic stiffness coefficient,unsteady aerodynamic force and flutter results.The results show that the aerodynamic stiffness coefficient with expression of mode shape could be taken as a quick criterion for mode selection in flutter model design and analysis.
flutter influence mode unsteady aerodynamic force model design
Zhao ling Ji chen Yang Yinong Liu Ziqiang
China Academy of Aerospace Aerodynamics,100074,Beijing,P.R.China
国际会议
2014 Asia-Pacific International Symposium on Aerospace Technology(2014亚太航空航天技术学术会议)
上海
英文
1-6
2014-09-24（万方平台首次上网日期，不代表论文的发表时间）