Wing Stiffness and Hinge Release Threshold Effects on Folding Wingtip Gust Load Alleviation
Wing Stiffness and Hinge Release Threshold Effects on Folding Wingtip Gust Load Alleviation
复制标题
机翼刚度和铰链释放阈值对折叠翼尖阵风载荷减轻的影响
DOI：
10.2514/6.2022-1559
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发表时间：
2022
期刊：
影响因子：
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通讯作者：
J. Sodja
中科院分区：
文献类型：
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作者：
Xavier Carrillo;Christophe Mertens;A. Sciacchitano;B. V. van Oudheusden;R. De Breuker;J. Sodja
本文介绍了一种气动弹性风洞试验，以确定机翼刚度和铰链释放阈值对折叠翼尖设计阵风载荷减缓性能的影响。对具有不同刚度和剪裁特性的5个模型进行了试验，并将不同条件下的翼根弯矩与铰链锁定条件下的响应进行了比较，以评估对折叠翼尖阵风载荷减缓能力的影响。结果表明，结构性能对峰值荷载缓和没有重要影响，但铰链释放阈值和时机对峰值荷载缓和有重要影响。在正确的时间释放可以显著降低峰值负载。然而，系统的动态特性受到这种释放的影响：发动机转速降低，尽管性能可以提高，但负载振荡增加，这可能被认为是有害的，例如疲劳
An aeroelastic wind tunnel experiment to identify the influence of the wing stiffness and hinge release threshold on the gust load alleviation performance of a folding wingtip design is presented in this study. Five models with different stiffness and tailoring properties are tested and the wing root bending moment at different conditions is compared to the response with locked hinge conditions to assess the impact on the gust load alleviation capabilities of the folding wingtip. The results show that the structural properties do not have an important impact on the peak load alleviation but the hinge release threshold and timing do. Releasing with the correct timing can reduce significantly the peak loads. However, the dynamics of the system are affected by this release: the flutter speed is decreased and, although the performance can improve, load oscillations increase, which can be considered detrimental for reasons such as fatigue