Angle of Attack Effects on the Induced Structural Loads of a Weapons Bay

David Bacci, Alistair J. Saddington
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Abstract

Aero-acoustic analysis was conducted on a weapons bay numerical model with doors, incorporating radar cross section reduction features. The effect of the angle of attack on the aero-acoustic response of the cavity was analysed at Mach numbers of 0.85 and 1.20. It was found that incidence influenced both mean-flow features and acoustic response. Further, linear and angular accelerations induced by the flow on the bay doors revealed potential adverse fluid–structure coupling when the results were compared with modal analysis. Again, the angle of attack did influence the aeroacoustic effects on the cavity door structure.

攻角对武器舱诱导结构载荷的影响
对一个考虑雷达截面积减小特征的带门武器舱数值模型进行了气动声学分析。在马赫数为0.85和1.20时,分析了攻角对空腔气动声响应的影响。研究发现,入射对平均流特性和声响应都有影响。此外,与模态分析结果相比,流动在舱门上引起的线加速度和角加速度揭示了潜在的不利流固耦合。攻角对空腔门结构的气声效应也有影响。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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