• Title/Summary/Keyword: geometrically exact beam model

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Aeroelastic Tailoring of a Forward-Swept Wing Using One-dimensional Beam Analysis (1차원 보 해석을 활용한 전진익 항공기의 복합적층 날개 공력탄성학적 테일러링)

  • Choi, JaeWon;Lim, ByeongUk;Lee, SiHun;Shin, SangJoon
    • Journal of the Korean Society for Aeronautical & Space Sciences
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    • v.48 no.8
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    • pp.555-563
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    • 2020
  • Foward-swept wings are known to possess superior aerodynamic performance compared to the conventional straight wings. However major concerns regarding forward-swept wings include divergence at lower airspeeds which require careful consideration at the design stage. As an endeavor to overcome such drawbacks, aeroelastic tailoring is attempted. In order to find an optimal ply sequence, recursive aeroelastic analyses is conducted and one-dimensional beam analysis coupled with simple aerodynamics is used for the improved computational efficiency and modelling convenience. The analysis used in this paper, DYMORE and analytic formula, both use one-dimensional beam model for the structure. Cross-sectional analysis for multi-cell NACA0015 airfoil section is conducted using VABS and oblique function is used for the sweep angle. Throughout the present aeroelastic tailoring, the maximum divergence speed of 290.2m/s is achieved which is increased by approximately 43% than that for the conventional ply configuration.