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Other TitleFeasibility Study of Windbreak Walls to Improve the Wind Conditions in Outdoor Static Engine Noise Tests
Author(jpn)仲田, 靖; 賀澤, 順一
Author(eng)Nakata, Yasushi; Kazawa, Junichi
Author Affiliation(jpn)宇宙航空研究開発機構研究開発本部ジェットエンジン技術研究センター; 宇宙航空研究開発機構研究開発本部ジェットエンジン技術研究センター
Author Affiliation(eng)Jet Engine Technology Research Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA); Jet Engine Technology Research Center, Aerospace Research and Development Directorate, Japan Aerospace Exploration Agency (JAXA)
Issue Date2010-09-30
PublisherJapan Aerospace Exploration Agency (JAXA)
Publication titleJAXA research and development memorandum
Publication date2010-09-30
AbstractOutdoor static engine noise tests for aircraft noise certification or verification of developing engine noise reduction technologies are required to be conducted under the limited wind conditions to maintain the reliability of the measured far field noise data. In some cases, the uncontrollable wind can be the major factor which causes the delay of engine development projects or noise reduction technology research programs. In order to minimize the risk, the feasibility of windbreak walls to improve the acoustical arena wind conditions was studied by Computer Fluid Dynamics (CFD) analysis. Several configurations of windbreak walls were parametrically analyzed and evaluated. As a result of the analysis, it was found that some windbreak wall configurations had the possibility to improve the acoustical arena wind conditions, but did not have enough windbreak effect against the crosswind from specific directions. Further study is necessary to find more feasible and practical windbreak wall configurations.
DescriptionOriginal contains color illustrations
形態: カラー図版あり
KeywordsAircraft Engine Noise, Turbofan Engine, Static Engine Noise Test, Far Field Noise Measurement, Wind Limits, Sound Propagation, Refraction, Acoustic Shadow, Windbreak Wall, CFD
Document TypeTechnical Report
JAXA Category研究開発資料
Report NoJAXA-RM-10-009

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