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http://dx.doi.org/10.5139/JKSAS.2007.35.4.295

Nonlinear Aeroelastic Analysis of a Wing with Control Surface Freeplay in Subsonic/Transonic Regions  

Kim, Kyung-Seok (한국과학기술원 항공우주공학과 대학원)
Kim, Jong-Yun (한국과학기술원 항공우주공학과 대학원)
Yoo, Jae-Han (현대기아자동차 연구소)
Bae, Jae-Sung (한국항공대학교 항공우주 및 기계공학부)
Lee, In (한국과학기술원 항공우주공학과)
Publication Information
Journal of the Korean Society for Aeronautical & Space Sciences / v.35, no.4, 2007 , pp. 295-301 More about this Journal
Abstract
The aeroelastic characteristics of a wing with control surface freeplay are investigated. The transonic small disturbance equation is used for unsteady aerodynamic forces in subsonic/transonic region. The fictitious mass method is introduced to apply a modal approach to nonlinear structural models. Nonlinear aeroelastic time responses are calculated by the coupled time integration method. Using these methods, an efficient aeroelastic analysis is achieved for aerodynamic and structural nonlinearities simultaneously. The effects of the aerodynamic nonlinearity, initial flap amplitude, and freeplay magnitude in aeroelastic characteristics are investigated in this study.
Keywords
Aeroelasticity; Freeplay; Nonlinear; Control Surface; Transonic;
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