COMPARISON OF FULL-SCALE XV-15 BLADE-VORTEX INTERACTION NOISE CALCULATIONS WITH WIND TUNNEL DATA

机译：大型XV-15叶片涡旋相互作用噪声计算与风洞数据的比较

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Results from the TRAC acoustic prediction system were correlated with data from a test of anrnisolated full-scale XV-15 rotor in the NASA Ames 80- by 120-Foot Wind Tunnel. Thernairloads calculation provided by the original CAMRAD.Mod1 code in the standard TRACrnsystem was exercised with several high resolution options, including the FPXBVI CFD code.rnIn addition, the more recent CAMRAD II code was run in place of the originalrnCAMRAD.Mod1. The CAMRAD II code, with a multiple trailer wake model yieldingrnairloads at 3 degree azimuthal resolution, provided excellent correlation with measured BVIrnpulse amplitude, but less so for pulsewidth. There is indication that better results may bernobtained with higher resolution airloads.

机译：TRAC声学预测系统的结果与来自NASA Ames 80-120英尺风洞的全隔离XV-15转子测试的数据相关。标准TRACrn系统中原始CAMRAD.Mod1代码提供的热负荷计算是通过几个高分辨率选项进行的，其中包括FPXBVI CFD代码。此外，最新的CAMRAD II代码代替了原始rn CAMRAD.Mod1。带有多个挂车尾迹模型的CAMRAD II代码在3度方位角分辨率下产生了空载，它与测得的BVIrnpulse振幅具有极好的相关性，但对于脉冲宽度却不那么重要。有迹象表明，更高分辨率的空载可以得到更好的结果。

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来源
《AHS International technical specialist meeting on aerodynamics, acoustics, and test and evaluation》|2002年|p.1-10|共10页
会议地点 San Francisco CA(US)
作者
Cahit Kitaplioglu; Wayne Johnson;
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作者单位

Army/NASA Rotorcraft Division NASA Ames Research Center Moffett Field, California;

Army/NASA Rotorcraft Division NASA Ames Research Center Moffett Field, California;

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会议组织
原文格式 PDF
正文语种 eng
中图分类直升机、旋翼机飞行力学;
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COMPARISON OF FULL-SCALE XV-15 BLADE-VORTEX INTERACTION NOISE CALCULATIONS WITH WIND TUNNEL DATA

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