Abstract
Computer simulations for the prediction of badminton shuttlecock trajectories have been performed widely. Aerodynamic properties, such as drag, lift and pitching moment coefficients for a simulation are usually measured by a wind tunnel experiment. For the sake of simplicity, it is desirable to measure the aerodynamic properties using images of shuttlecock trajectory experiment captured by a high speed video camera without a wind tunnel experiment. This paper describes a possibility for an identification of shuttlecock aerodynamic properties which depend on Reynolds number and angle of attack from a trajectory analysis. We present a new method to overcome difficulties which arise from variations of velocity and angle of attack during a shuttlecock flight. Fairly good results of shuttlecock aerodynamic properties which depend on Reynolds number and angle of attack are obtained using the present identification method through horizontal projection experiments at a variety of initial velocities and an inclined projection experiment.
