Open Access

ABSTRACT

Nonlinear Aeroelastic Analysis of a Wing with Control Surface Freeplay

K.S. Kim¹, J.H. Yoo², J.S. Bae³, I. Lee¹

1 Dept. of Aerospace Eng., Korea Advanced Institute of Science and Technology, Daejeon, Korea
2 Corporate Research & Development Division, Hyundai Kia Motors, Hwaseong-Si, Gyeonggi-Do, Korea
3 The School of Aerospace and Mechanical Engineering, Hankuk Aviation Univ., Goyang-Si, Gyeonggi-Do, Korea

The International Conference on Computational & Experimental Engineering and Sciences 2007, 2(3), 75-80. https://doi.org/10.3970/icces.2007.002.075

Abstract

In this paper, nonlinear aeroelastic characteristics of a wing with control surface freeplay were investigated. The transonic small disturbance equation was applied to calculate unsteady aerodynamic forces in subsonic/transonic region. The fictitious mass method was used to apply a modal approach to nonlinear structural models. Nonlinear aeroelastic time responses were calculated by the coupled time integration method. In this study, it was found that aerodynamic nonlinearity, initial flap angle and freeplay angle affect aeroelastic characteristics.

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