Empirical Prediction of Aircraft Landing Gear Noise
Empirical Prediction of Aircraft Landing Gear Noise
复制标题
飞机起落架噪声的实证预测
DOI：
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复制
发表时间：
2005
期刊：
影响因子：
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通讯作者：
Yueping Guo
中科院分区：
文献类型：
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作者：
R. Golub;Yueping Guo
本文提出了一种半经验/半分析的起落架噪声预测方法。该方法基于气动噪声产生理论的标度规律以及这些标度规律与现有测试数据的相关性。前者为该方法提供了良好的理论基础，后者定量地确定了起落架组件参数与远场噪声之间的关系，从而实现了飞机起落架噪声的参数趋势和绝对噪声级的实际预测。该预测模型通过单独的波音737起落架风洞试验数据和波音777飞机的飞行数据进行了验证。在这两种情况下，无论是在参数趋势上还是在绝对噪声水平上，预测都与数据吻合得很好。
This report documents a semi-empirical/semi-analytical method for landing gear noise prediction. The method is based on scaling laws of the theory of aerodynamic noise generation and correlation of these scaling laws with current available test data. The former gives the method a sound theoretical foundation and the latter quantitatively determines the relations between the parameters of the landing gear assembly and the far field noise, enabling practical predictions of aircraft landing gear noise, both for parametric trends and for absolute noise levels. The prediction model is validated by wind tunnel test data for an isolated Boeing 737 landing gear and by flight data for the Boeing 777 airplane. In both cases, the predictions agree well with data, both in parametric trends and in absolute noise levels.
747天桥？
DOI：
10.1038/oby.2009.209
发表时间：
2009
期刊：
Obesity (Silver Spring, Md.)
影响因子：
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作者：
Bergman,RichardN
通讯作者：
Bergman,RichardN