論文

査読有り
2013年

Free flight and wind tunnel measurements of the drag exerted on an archery arrow

6TH ASIA-PACIFIC CONGRESS ON SPORTS TECHNOLOGY (APCST)
  • K. Okawa
  • ,
  • Y. Komori
  • ,
  • T. Miyazaki
  • ,
  • S. Taguchi
  • ,
  • H. Sugiura

60
開始ページ
67
終了ページ
72
記述言語
英語
掲載種別
研究論文(国際会議プロシーディングス)
DOI
10.1016/j.proeng.2013.07.017
出版者・発行元
ELSEVIER SCIENCE BV

We describe two support-interference-free measurements of aerodynamic forces exerted on an archery arrow. The whereas the second measurement is carried out by a free flight experiment. In the latter measurement, the trajectory and rotation of the arrow is recorded by two highrate is analyzed to determine the drag coefficient. The arrow-shooting system developed by Miyazaki et al. (2013) is utilized, in order to investigate Re number dependence of the drag coefficient for. We attach two points (piles) of different type (streamlined and bullet) to the arrow-head and two kinds of vanes (SPINWING- VANE and GAS PRO) to the arrow-tail. The boundary layer remains laminar for any combination of point and vane, if Re is less than. It becomes turbulent for Re larger than and the drag coefficient increases to about 2.6, when the bullet point and SPIN-WING-VANE are attached. In the same Re range, two values of drag coefficient are found for the combination of streamlined point and SPIN-WING-VANE. The lower value (about 1.6) corresponds to a laminar boundary layer and the larger value (about 2.6) to a turbulent boundary layer. In contrast, for GAS PRO vanes, the boundary layer remains laminar at any Re considered, irrespective of the pointshape. These findings confirm that both the point-and vane-shapes have a crucial influence on the laminar to turbulent transition of the boundary layer. We also asked an elite female archer (recurve bow) to shoot the same A/C/E arrow (with bullet point and SPIN-WING-VANE), of which velocity is 58 m/s. The arrow 2.65 (turbulent value), indicating that the oscillation of the arrow induces the boundary layer transition. (C) 2013 The Authors. Published by Elsevier Ltd.

リンク情報
DOI
https://doi.org/10.1016/j.proeng.2013.07.017
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000326266100012&DestApp=WOS_CPL
ID情報
  • DOI : 10.1016/j.proeng.2013.07.017
  • ISSN : 1877-7058
  • Web of Science ID : WOS:000326266100012

エクスポート
BibTeX RIS