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首页> 外文会议>AIAA/CEAS aeroacoustics conference >Measurements of Interaction and Scattered Modes in a Mixed Bypass/Core Duct due to Multiple Rotating Sources
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Measurements of Interaction and Scattered Modes in a Mixed Bypass/Core Duct due to Multiple Rotating Sources

机译：由于多个旋转源，在混合旁路/堆芯管道中相互作用和散射模式的测量

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摘要

A Honeywell Aerospace model scale research fan module was tested in both Honeywell's Subscale Fan Rig and NASA's 9x15 Low Speed Wind Tunnel. Modal measurements were acquired in both facilities to document the modal content. The Rotating Rake Measurement System was utilized to measure the acoustic duct modes in the NASA 9x15 Low Speed Wind Tunnel fan installation. In the Honeywell Subscale Fan Rig, two in-duct phased microphone arrays were installed to simultaneously measure fan noise in the inlet and bypass exhaust ducts. Prior Rotating Rake and Array Beamforming measurements have occurred in environments with a single rotating source interacting with a stationary source to produce duct modes at the fan harmonics. The scale model high-speed research fan had two rotating sources, a rotor and a booster, which were on the same shaft. This allowed for an expansion of duct mode measurement and analysis techniques.
机译：霍尼韦尔航空航天模型规模研究风扇模块已在霍尼韦尔（中国）的超小型风扇钻机和美国宇航局（NASA）的9x15低速风洞中进行了测试。在两个设施中均采集了模态测量值，以记录模态含量。旋转耙测量系统用于测量NASA 9x15低速风洞风机安装中的声学管道模式。在霍尼韦尔（中国）小型风机机架中，安装了两个同相麦克风阵列，以同时测量进气道和旁通排气道中的风扇噪声。在单个旋转源与固定源相互作用以产生风扇谐波的风道模式的环境中，已经进行了先前的旋转耙和阵列波束成形测量。比例模型高速研究风扇具有两个旋转源，一个转子和一个增压器，它们位于同一根轴上。这允许风管模式测量和分析技术的扩展。

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