The aerodynamic properties of an arrow (A/C/E; Easton) were investigated in an extension of our
previous work, in which the laminar-turbulent transition of the boundary layer on the arrow shaft
was found to take place in the Re number range of 1.2 × 10 4 < Re < 2.0 × 10 4 . In this paper, we
focus on the influence of the arrow’s attitude on the transition. Two types of vane (Spin Wing vane
and Gas Pro vane) are fletched, and their stabilizing effects are compared. Two
support-interference-free tests are performed to provide aerodynamic properties such as the drag,
lift and pitching moment coefficients. The static aerodynamic properties are measured in a wind
tunnel with JAXA’s 60 cm magnetic suspension and balance system. When the arrow is aligned with the
flow, the boundary layer remains laminar for Re < 1.5 × 10 4 , and the drag coefficient is
approximately 1.5 for 1.0 × 10 4 < Re < 1.5 × 10 4...