Volleyball flight trajectory and aerodynamic characteristics due to different panels

Abstract

In recent ball game sports, the shape of the ball changes with each tournament, and the content and tactics of the game also change due to the great influence on the trajectory of the ball. Ball fluid analysis has become indispensable. Even in volleyball, various ballistic changes can be seen because the ball flies while rotating. And volleyball play begins with a serve. Serve is said to be the most aggressive play because you can raise the toss and hit at your own timing without being disturbed by anyone. Therefore, in this study, we focused on the jump serve of volleyball and compared it with existing balls. Therefore, the flight trajectory of the ball and the force applied to the ball were measured from the actual hitting experiment, the injection experiment, and the wind tunnel experiment. From there, the flight distance and speed change were predicted. From the results, it was confirmed that the flight distance became shorter as the number of revolutions increased in all the spheres. In addition, the panel shape, the difference in surface shape is, it was confirmed that a significant impact on the trajectory. Based on these results, we propose a jump serve that can be dropped in front of the apparent flight trajectory.