An Acoustic Impedance Model for Evaluating the Ground Effect of Static-Firing Tests on a Rocket Motor

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著者

    • ISHII Tatsuya
    • Aerospace Research and Development Directorate (ARD), Japan Aerospace Exploration Agency (JAXA)
    • TAKAKI Ryoji
    • JAXA's Engineering Digital Innovation (JEDI) Center, Japan Aerospace Exploration Agency (JAXA)
    • FUJII Kozo
    • Institute of Space and Astronautical Science (ISAS), Japan Aerospace Exploration Agency (JAXA)

抄録

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.

収録刊行物

  • Transactions of the Japan Society for Aeronautical and Space Sciences

    Transactions of the Japan Society for Aeronautical and Space Sciences 54(184), 120-129, 2011-08-04

    一般社団法人 日本航空宇宙学会

参考文献:  27件中 1-27件 を表示

各種コード

  • NII論文ID(NAID)
    10030274487
  • NII書誌ID(NCID)
    AA0086707X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    05493811
  • NDL 記事登録ID
    11195384
  • NDL 雑誌分類
    ZN25(科学技術--運輸工学--航空機・ロケット)
  • NDL 請求記号
    Z53-M236
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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