Proceedings of the Korean Society for Noise and Vibration Engineering Conference (한국소음진동공학회:학술대회논문집)
- 2000.06a
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- Pages.1228-1233
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- 2000
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- 1598-2548(pISSN)
Flutter Characteristics of Double-Swept Composite Wings
이중 후퇴각을 갖는 복합재 날개의 플러터 특성
Abstract
A new planform of a wing having two sweep angles is proposed to enhance the aeroelastic stability of a swept-forward wing. The double-swept wing has two sweep angles with inboard wing swept-back and outboard wing swept-forward. Aeroelastic analysis is performed with the finite element method to model wing structure and the doublet point method to predict aerodynamic loads. The sweep angle of the inboard wing is varied in this analysis while the outboard wing is swept forward to a pre-selected amount. The results show that the aeroelastic stability can be drastically enhanced by adjusting the sweep angle of the inboard wing. The effect of the fiber orientation in the double-swept composite wing is studied and the proper ply angle is identified to maximize critical speed.
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