STATUS OF IMPROVING NAL 0.2M SUPERSONIC WIND TUNNEL FOR QUIET FLOW

DOI Web Site 10 References
  • SAWADA Hideo
    Low-Disturbance and Cryogenic Wind Tunnel Testing Technique Group,Fluid Science Research Center, National Aerospace Laboratory, Japan

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Other Title
  • 航空宇宙技術研究所0.2m超音速風洞静粛化に向けた取り組み
  • コウクウ ウチュウ ギジュツ ケンキュウショ 0.2m チョウオンソク フウドウ セイシュクカ ニ ムケタ トリクミ

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Abstract

Some features of the 0.2m supersonic wind tunnel at National Aerospace Laboratory relating to the quiet flow establishment are described. Pressure fluctuations were measured along the tunnel circuit. The pressure fluctuation ratio at the settling chamber exit satisfies a goal of the value less than 0.2 % for the quiet wind tunnel. However, the measured velocity fluctuation ratio does not satisfy another goal of the value less than 1 %. Measured Pitot pressure fluctuation ratio at the test section does not satisfy a goal of the value less than 0.1 % for the quiet flow although the value is near the goal.

Journal

  • Wind Engineers, JAWE

    Wind Engineers, JAWE 1999 (78), 69-72, 1999

    Japan Association for Wind Engineering

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