アーチェリーの矢羽根形状がシャフトの回転および振動特性に及ぼす影響に関する実験的研究

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  • Experimental study on the effect of archery arrow vane shape on shaft rotation and vibration characteristics
  • アーチェリー ノ ヤバネ ケイジョウ ガ シャフト ノ カイテン オヨビ シンドウ トクセイ ニ オヨボス エイキョウ ニ カンスル ジッケンテキ ケンキュウ

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説明

Archery has many competitors around the world, and new materials are used for the parts of bows as technology develops in recent years. There are increasing number of unexplained areas of archery performance due to the diversification of new materials. One of them is the arrow feather (vane). Vane is roughly divided into rotary and non-rotary types. Since the rotary type is mainly the drag type, the arrow speed decreases. But if a lift type rotary vane can be developed, it is considered that a vane with better performance can be achieved because the rotational force can be obtained with lower drag. If we can clarify the characteristics and common points of vane that lead to higher scores, we can expect to develop new vanes. In wind tunnel experiments, using a jig with an arrow model, measurement and analysis were performed on the rotational performance and convergence performance of the arrow model at a uniform flow velocity of 20 m/s (1/3 of the actual arrow speed). To evaluate the performance of vane, the rotational performance was evaluated by the number of revolutions for each of the non-converging motion (at rest) and the converging motion (vibration), and the convergence performance was evaluated by the time until convergence of vibration of arrow shaft. In the performance evaluation of off-the-shelf products, it became clear that rotary vanes can be further classified into those with top pitches and those that do not, and those with many users worldwide do not have top pitches.

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