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A comparison of Jabulani and Brazuca non-spin aerodynamics
http://hdl.handle.net/2241/00122825
http://hdl.handle.net/2241/00122825721dc5d3-d4f9-4467-9241-afc9f46f5832
名前 / ファイル | ライセンス | アクション |
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JSET_228-3 (574.9 kB)
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Item type | Journal Article(1) | |||||
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公開日 | 2015-01-07 | |||||
タイトル | ||||||
タイトル | A comparison of Jabulani and Brazuca non-spin aerodynamics | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Goff, John Eric
× Goff, John Eric× Asai, Takeshi× Hong, Sungchan |
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著者別名 |
淺井, 武
× 淺井, 武 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Wind-tunnel experimental measurements of drag coefficients for non-spinning Jabulani and Brazuca balls are presented. The Brazuca ball’s critical drag speed is lower than that of the Jabulani ball, and the Brazuca ball’s super-critical drag coefficient is larger than that of the Jabulani ball. Compared to the Jabulani ball, the Brazuca ball suffers less instability due to knuckle-ball effects. Using drag data, numerically determined ball trajectories are created, and it is postulated that although power shots are too similar to note flight differences, goalkeepers are likely to note the differences between Jabulani and Brazuca ball trajectories for intermediate-speed ranges. This latter result may appear in the 2014 World Cup for goalkeepers used to the flight of the ball used in the 2010 World Cup. | |||||
書誌情報 |
Journal of sports engineering and technology en : Proceedings of the Institution of Mechanical Engineers. Part P, Journal of sports engineering and technology 巻 228, 号 3, p. 188-194, 発行日 2014-09 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1754-3371 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA12327207 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1177/1754337114526173 | |||||
権利 | ||||||
権利情報 | © The Author(s) | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | SAGE Publications | |||||
出版者 | ||||||
出版者 | Institution of Mechanical Engineers |