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首页> 外文期刊>Transactions of the Japan society for aeronautical and space sciences >An Acoustic Impedance Model for Evaluating the Ground Effect of Static-Firing Tests on a Rocket Motor
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An Acoustic Impedance Model for Evaluating the Ground Effect of Static-Firing Tests on a Rocket Motor

机译：用于评估火箭发动机静态点火试验对地面的影响的声阻抗模型

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摘要

The accurate evaluation of the ground reflection effect is of importance for acoustic measurement conducted during static-firing tests of rocket motors. The effectiveness of existing acoustic impedance models was examined by comparing experimental data collected from acoustically hard surfaces. Through these comparisons and the subsequent evaluation of the effect of meteorological conditions, it was confirmed that the existing impedance models are not suitable for the evaluation of long-distance propagation over a hard surface, which corresponds to the far-field conditions in the present static-firing tests of solid rocket motors. A new acoustic impedance model is proposed in this paper. Comparisons of the acoustic measurement data indicated that the new model is effective for both near- and far-field propagation of acoustic waves. The proposed model was applied to acoustic data collected during static-firing tests of solid rocket motors assuming distributed acoustic sources along the exhaust jet axis in order to remove the ground reflection effect.
机译：地面反射效果的准确评估对于火箭发动机静态点火测试期间进行的声学测量非常重要。通过比较从声学上坚硬的表面收集的实验数据，检查了现有声阻抗模型的有效性。通过这些比较以及随后对气象条件影响的评估，可以确认现有的阻抗模型不适合评估在硬表面上的长距离传播，这与当前静态条件下的远场条件相对应。固体火箭发动机的点火测试。本文提出了一种新的声阻抗模型。声学测量数据的比较表明，新模型对于声波的近场和远场传播均有效。所提出的模型应用于固体火箭发动机静态点火测试期间收集的声学数据，假设沿排气射流轴分布了声源，以消除地面反射效应。

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  • 作者

    Kota Fukuda; Seiji Tsutsumi; Kyoichi Ul; Tatsuya Ishii; Ryoji Takaki; Kozo Fujii;

  • 作者单位

    School of Engineering, Department of Aeronautics and Astronautics, Tokai University, Hiratsuka, Japan;

    JAXA 's Engineering Digital Innovation (JEDl) Center, Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan;

    Space Transportation Mission Directorate/Epsilon Rocket Project Team, Japan Aerospace Exploration Agency (JAXA), Tsukuba, Japan;

    Aerospace Research and Development Directorate (ARD), Japan Aerospace Exploration Agency (JAXA), Chofu, Japan;

    JAXA 's Engineering Digital Innovation (JEDl) Center, Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan;

    Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA), Sagamihara, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Rocket Motor; Acoustic Measurement; Ground Effect;

    机译：火箭发动机;声学测量;地面效应;

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