JAXA Repository / AIREX 未来へ続く、宙(そら)への英知
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titleNumerical analysis for main-rotor/tail-rotor interaction of helicopter
Other Titleヘリコプタのメインロータとテイルロータの干渉に関する数値解析
Author(jpn)梁, 忠模; 青山, 剛史; 近藤, 夏樹; 齊藤, 茂
Author(eng)Yang, Choongmo; Aoyama, Takashi; Kondo, Natsuki; Saito, Shigeru
Author Affiliation(jpn)宇宙航空研究開発機構研究開発本部数値解析センター; 宇宙航空研究開発機構研究開発本部数値解析センター; 日本飛行機; 宇宙航空研究開発機構航空プログラムグループ運航・安全技術チーム
Author Affiliation(eng)Numerical Analysis Group, Aerospace Research and development Directorate, Japan Aerospace Exploration Agency (JAXA); Numerical Analysis Group, Aerospace Research and development Directorate, Japan Aerospace Exploration Agency (JAXA); NIPPI; Operation and Safety Technology Team, Aviation Program Group, Japan Aerospace Exploration Agency (JAXA)(APG)
Issue Date2009-03-31
Japan Aerospace Exploration Agency (JAXA)
Publication title宇宙航空研究開発機構研究開発報告
JAXA research and development report
Start page1
End page15
Publication date2009-03-31
AbstractA simulation method for full helicopter configuration is constructed by combining an unsteady Euler code and an aeroacoustic code based on the Ffowcs-Williams and Hawkings formulation. The flow field and helicopter noise are calculated using a moving overlapped grid system, and the mutual effect of main rotor and tail rotor are studied for the helicopter in hover or forward flight. In the hovering flight calculation, the tip vortex of the tail rotor is dragged by the induced flow of the main rotor, and the detailed phenomena of the flow pattern are captured well. In a forward-flight calculation, noises from the main rotor and tail rotor are predicted to understand the tail rotor noise for both self noise and the interaction noise with the main-rotor wake. Comparison of noise magnitude shows that the relative importance of tail rotor noise with respect to the main rotor noise according to the flight conditions.
DescriptionOriginal contains color illustrations
KeywordsBVI Noise, Main-Rotor/Tail-Rotor Interaction, CFD, Overlapped Grid System
Document TypeTechnical Report
JAXA Category研究開発報告
Report NoJAXA-RR-08-006E

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