13S 軟式野球ボールの飛翔特性(スポーツ工学シンポジウム2001)

概要

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This paper is described on the rotation flying characteristic to surface structure of a baseball ball. This study is a basic research for optimum design of surface structure of the rubber-ball used in baseball. As a first stage, it is important the fact of the rubber-ball in which the flying characteristics in the rotational stage is grasped. The balls used for experiment were used the ball of 6 kinds of surface structure such as smooth sphere, ball with dimples, ball with the seam, and ball with dimple and seam. Drag and Lift coefficient were measured in uniform flow in the Reynolds number range of 2.3×10^4〜1.6×10^5 and the rotation number range of 1000〜3500. From these experimental results, the difference between aerodynamic lift and drag for this surface structure of the ball were clarified.
一般社団法人日本機械学会の論文
2001-11-07