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JOURNAL
OF
SPORTS SCIENCE &
MEDICINE
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Research
article
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A STUDY OF SHUTTLECOCK'S TRAJECTORY IN BADMINTON |
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Lung-Ming Chen1, Yi-Hsiang Pan2 
and Yung-Jen Chen3 |
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1Department of Computer and Communication, Sue-Te University, Taiwan ROC, 2Graduate Institute of Physical Education, National Taiwan Sport University, Taiwan ROC, 3Taipei County Ell-Chorng Elementary School, Taipei County , Taiwan ROC. |
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© Journal of Sports Science and Medicine (2009) 8, 657 - 662 |
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| ABSTRACT | |||
| The main purpose of this study was to construct and validate a
motion equation for the flight of the badminton and to find the relationship
between the air resistance force and a shuttlecock's speed. This research
method was based on motion laws of aerodynamics. It applied aerodynamic
theories to construct motion equation of a shuttlecock's flying trajectory
under the effects of gravitational force and air resistance force. The result
showed that the motion equation of a shuttlecock's flight trajectory could
be constructed by determining the terminal velocity. The predicted shuttlecock
trajectory fitted the measured data fairly well. The results also revealed
that the drag force was proportional to the square of a shuttlecock velocity.
Furthermore, the angle and strength of a stroke could influence trajectory.
Finally, this study suggested that we could use a scientific approach to
measure a shuttlecock's velocity objectively when testing the quality of
shuttlecocks. And could be used to replace the traditional subjective method
of the Badminton World Federation based on players' striking shuttlecocks,
as well as applying research findings to improve professional knowledge
of badminton player training.
Key words: Projectile motion, aerodynamics, badminton. |
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