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A review on non-linear aeroelasticity of high aspect-ratio wings

机译:高纵横比机翼的非线性气动弹性研究进展

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摘要

Current economic constraints and environmental regulations call for design of more efficient aircraft configurations. An observed trend in aircraft design to reduce the lift induced drag and improve fuel consumption and emissions is to increase the wing aspect-ratio. However, a slender wing is more flexible and subject to higher deflections under the same operating conditions. This effect may lead to changes in dynamic behaviour and in aeroelastic response, potentially resulting in instabilities. Therefore, it is important to take into account geometric non-linearities in the design of high aspect-ratio wings, as well as having accurate computational codes that couple the aerodynamic and structural models in the presence of non-linearities. Here, a review on the state-of-the-art on non-linear aeroelasticity of high aspect-ratio wings is presented. The methodologies employed to analyse high aspect-ratio wings are presented and their applications discussed. Important observations from the state-of-the-art studies are drawn and the current challenges in the field are identified.
机译:当前的经济限制和环境法规要求设计更有效的飞机配置。飞机设计中减小升力引起的阻力并改善燃油消耗和排放的趋势是增加机翼的长宽比。但是,细长的机翼更加灵活,并且在相同的工作条件下会产生更大的挠曲。这种影响可能导致动态行为和气动弹性响应发生变化,从而可能导致不稳定。因此,重要的是在高长宽比机翼的设计中考虑几何非线性,以及在存在非线性的情况下具有将空气动力学和结构模型耦合的精确计算代码。在这里,对高纵横比机翼的非线性气动弹性技术进行了综述。介绍了用于分析高纵横比机翼的方法,并讨论了它们的应用。从最新研究中得出了重要的结论,并确定了该领域当前的挑战。

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