Abstract
In this study, we conducted experimental measurements and computational analysis to investigate the aerodynamics of a shuttlecock, especially the effects of the camber of the shuttle’s skirt. The static aerodynamic coefficient from the experiment showed that the camber of the skirt was able to modify the aerodynamic characteristics. A positive camber, which indicates bending the blade toward the outside, causes a slight increase in lift and a decrease in drag. On the other hand, a negative camber causes an increase in drag, and an insensitive region in the lift and a pitching coefficient of approximately 0° was observed. This result leads to instability in the flight of the shuttlecock. The pressure distribution calculated using computational fluid dynamics revealed that each blade functions as a two-dimensional airfoil. However, in most cases, the blade is in stall condition due to an initial divergence angle of the skirt.
Highlights
A badminton shuttlecock flies very fast, initially over 80 m/s, and soon decreases its speed to under 10 m/s in 0.6 s in 10 m as it flies toward the opponent
We investigate the effects of the camber of the skirt using wind tunnel experiments and computational fluid dynamics (CFD) analysis
An insensitive region in the lift coefficient was observed around α = 0 for the negative camber case; the drag coefficient increased at the same time
Summary
A badminton shuttlecock flies very fast, initially over 80 m/s, and soon decreases its speed to under 10 m/s in 0.6 s in 10 m as it flies toward the opponent. Such flight characteristics are never seen in other sports. A badminton shuttle consists of two parts: a cork, which forms the head and 15 to 16 natural waterfowl feathers. The lift force and pitching moment are important factors to be considered in terms of the aerodynamic stability of a badminton shuttlecock, especially in the turnover [9]
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