2013年11月1日
129 ヒステリシスを考慮した円盤投の最適化(投動作)
シンポジウム: スポーツ・アンド・ヒューマン・ダイナミクス講演論文集
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- 巻
- 2013
- 号
- 開始ページ
- "129
- 終了ページ
- 1"-"129-5"
- 記述言語
- 日本語
- 掲載種別
- 出版者・発行元
- 一般社団法人日本機械学会
This paper describes the hysteresis in the aerodynamic properties of a discus near to its stalling angle. Wind tunnel tests were carried out with a full-size woman's discus. The experimental aerodynamic data D, L and M were obtained from wind tunnel tests as functions of the angle of attack. It was found that the drag, lift and pitching moment coefficients, C_D C_L and C_M, increase with increasing the angle of attack up to a stalling angle of 30°. Beyond the stalling angle, C_L and C_M decrease suddenly and abruptly with increasing angle of attack. On the other hand, recovery from the stall does not occur at the same stalling angle of 30° when the angle of attack decreases from the stall state; recovery actually occurs at 25°. The C_L -α(angle of attack) curve is almost the same when the angle of attack is less than 24°. Therefore, hysteresis occurs near the stalling angle.
- リンク情報
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- CiNii Articles
- http://ci.nii.ac.jp/naid/110009935710
- CiNii Books
- http://ci.nii.ac.jp/ncid/AA12549865
- ID情報
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- CiNii Articles ID : 110009935710
- CiNii Books ID : AA12549865