Abstract
A shuttlecock which has an open conical shape is a high-drag projectile used in the sport of badminton, and the shape of the shuttlecock makes it extremely aerodynamically stable. In the present study, in order to understand the aerodynamic characteristics of a shuttlecock with rotation about shuttlecock's major axis, measurements of drag coefficient and the flow visualization around a shuttlecock were carried out in a wind tunnel. There was no significant difference in drag coefficients between the shuttlecocks with and without rotation when the shuttlecocks had reached quasi-steady state rotation. It was concluded that the drag force of shuttlecocks was not affected by the rotation rate and primarily related to the flow passing through the gap in the shuttlecock skirt.
