| 摘要 |
<p>PURPOSE:To enable an orderly flight of golf balls as a whole by using a set of a plurality of golf clubs in which a club length and a left of the hand contrarily increases/decreases and the loft numbered middle of a golf club is determined in accordance with a specific equatation. CONSTITUTION:When a club head 1 having a predetermined loft is swung at a predetermined speed Hv, a golf ball 10 jumps in the Z direction due to predetermined speeds Vn and Vt respectively in the vertical direction and in the face direction of a face 11. Reference character S is designated as the start of the set to A golf club having the longest club length and the smallest loft is designated as the start of the set of golf clubs and denoted as S and this loft is denoted as As. On the other hand, a golf club having the shortest club length and the largest loft is designated as the end of the set and demoted as E and this loft is denoted as Ae. The loft Ai of the (i)th golf club is determined by an equation: Ai=arcCos[Cos(As)-(i-1).{(Cos(As)-Cos(Ae)/(N-1)}].</p> |
