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首页> 外文期刊>International journal of aerospace engineering >Numerical Investigation into Flutter and Flutter-Buffet Phenomena for a Swept Wing and a Curved Planform Wing
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Numerical Investigation into Flutter and Flutter-Buffet Phenomena for a Swept Wing and a Curved Planform Wing

机译：横掠机翼和弯曲平面机翼的颤振和颤振-布菲现象的数值研究

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摘要

The results of numerical studies carried out on high-aspect-ratio wings with different planforms are discussed: the transonic regime is analysed for a swept wing and a curved planform wing. The wings have similar aspect ratios and similar aerodynamic profiles. The analyses were carried out by CFD and FE techniques, and the reliability of the numerical aerodynamic results was proven by a sensitivity study. Analysing the performances of the two wings demonstrated that in transonic flight conditions, a noticeable drag reduction can be obtained by adopting a curved planform wing. In addition, for such a wing, the aeroelastic instability condition, consisting in a classical flutter, is postponed compared to a conventional swept wing, for which a flutter-buffet instability occurs. In a preliminary manner, the study shows that, for a curved planform wing, the high speed buffet is not an issue and at the same time notable fuel saving can be achieved.
机译：讨论了对不同平面形状的高纵横比机翼进行数值研究的结果：分析了跨音速状态的后掠翼和弯曲平面翼。机翼具有相似的纵横比和相似的空气动力学轮廓。通过CFD和FE技术进行了分析，并且通过敏感性研究证明了数值空气动力学结果的可靠性。分析两个机翼的性能表明，在跨音速飞行条件下，采用弯曲的平面机翼可以显着降低阻力。另外，对于这种机翼，与传统的掠过机翼相比，包括传统扑翼的气动弹性不稳定性条件被推迟，传统的掠过机翼发生扑扑-不稳定性。初步研究表明，对于弯曲的平面机翼，高速自助餐不是问题，同时可以实现显着的燃油节省。

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