Abstract: The feather piece is  one of the essential materials to assemble badminton. Badminton assembled with different feather pieces is different in aerodynamic force, which affects the flying rotary dynamic stability of badminton and the accuracy of the placement. It presents an aerodynamic model for the feather piece of badminton. Combined with the knowledge of fluid mechanics and Bernoulli's principle and the experience formula for the straight length of a feather with different camber, it provides a calculation formula for the influence on badminton aerodynamic force of different factors such as camber, length, angle of attack and installation angle of the feather. The experimental results comply with the simulation results.

Key words: angle of attack； installation angle； bending and camber;  aerodynamic force;  badminton