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Design of morphing winglets with the inclusion of nonlinear aeroelastic effects

机译:包含非线性气动弹性效应的变形小翼设计

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摘要

A nonlinear aeroelastic model capable of assessing arbitrary morphing manoeuvres and calculating the associated morphing energy requirement is presented in this paper. The aeroelastic model consists of a close coupling between a corotational beam element, accounting for geometric nonlinearities, and a Weissinger method aerodynamic model, containing the Prandtl-Glauert correction for high-subsonic Mach numbers. The morphing deformations are discretised into three distinct morphing modes; fold morphing, twist morphing, and shear morphing, because of which virtually any morphed shape can be achieved, given a proper distribution of the three modes over the wing. The proposed aeroelastic morphing framework is used to design morphing winglets, and it has been shown that morphing winglets can improve the performance of fixed winglets significantly for regional airliners.
机译:本文提出了一种非线性气动弹性模型,该模型能够评估任意的变形操作并计算相关的变形能量需求。空气弹性模型由考虑几何非线性的电晕梁单元和Weissinger方法空气动力学模型之间的紧密耦合组成,其中包含对高亚音速马赫数的Prandtl-Glauert校正。将变形变形离散为三种不同的变形模式:折叠变形,扭曲变形和剪切变形,因此,只要在机翼上适当分配三种模态,实际上就可以实现任何变形形状。所提出的气动弹性变形框架被用于设计变形小翼,并且已经表明,变形小翼可以显着提高固定小翼的性能,以用于区域客机。

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  • 来源
    《The Aeronautical Journal》 |2011年第1174期|p.713-728|共16页
  • 作者单位

    Aerospace Structures and Computational Mechanics Delft University of Technology Delft, The Netherlands;

    Aerospace Structures and Computational Mechanics Delft University of Technology Delft, The Netherlands;

    Aerospace Structures and Computational Mechanics Delft University of Technology Delft, The Netherlands;

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