最先端の渦巻きは,スウィフトを上げ,スウィフトを上げています.
J J Videler1, E J Stamhuis, G D E Povel
1Department of Marine Biology (Experimental Marine Zoology Group), Groningen University, Post Office Box 14, 9750 AA, Haren, Netherlands. j.j.videler@biol.rug.nl
まとめ
鳥の飛行メカニクスは改修が必要である. 鳥は,後ろに振り回されたハンドウィングの先端の渦を使って持ち上げを生み出し,以前の空気力学モデルに挑戦します.
科学分野:
- 航空エアロダイナミクス
- 比較バイオメカニクス
- 流体力学 流体力学
背景:
- 鳥の飛行の伝統的なモデルは,翼の上に付着したフローを想定しています.
- 最近の研究では,鳥の飛行における非常識な空気力学メカニズムが示唆されています.
研究 の 目的:
- 鳥の飛行におけるスウィート・バック・ハンドウイングの空気力学的な役割を調査する.
- 鳥類の持ち上げと引き寄せの生成に関する現在の理解に挑戦し,見直す.
主な方法:
- 水道トンネルにおける一般的なスイフトウイングの物理モデル.
- デジタル粒子画像速度測定法 (DPIV) を使用した量的なフロー分析.
- 滑翔飛行のための現実的なレイノルズ数 (375037,500) でテスト.
主要な成果:
- 安定した先端渦は,小さな攻撃角度 (5°10°) で観察されました.
- 振り回されたハンドウィングは,これらの渦を通して活性的に持ち上げを生成します.
- アーム・ウィング・フローは,ハンド・ウィング・機能とは異なり,従来のように固定されていてもよい.
結論:
- 鳥の飛行,特にエレベーター生成は,最先端の渦巻きを含む非常識な空気力学に依存しています.
- 空気流管理におけるアームウィングとハンドウィングの異なる役割が強調されています.
- この研究は,確立された鳥の飛行理論の見直しを必要としています.
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