Aerodynamic characteristics of new and worn tennis balls

Abstract

Spinning serve or shot exist as a technique in tennis. For a correct competition to hit across the net. The batted ball of the high spin is shot by friction with the gut. Due to wear, tennis balls will have a difference in performance between new and worn. So It is necessary to measure the fluid force of new and used spinning tennis balls. In addition, it is necessary to compare various tennis balls. In this research, not only the fluid force measurement is carried out, but also the experimental apparatus is improved more than the previous research, and more accurate fluid force measurement was carried out.