Aerodynamic coefficients were determined for Telstar 18 and Brazuca, match balls for the
2018 and 2014 World Cups, respectively. Experimental determination of aerodynamic …

The drag crisis phenomenon is the drop of drag coefficient (Cd) with increasing Reynolds
number (Re) or speed. The aim of this study was to assess the hypothetical drag crisis …

Five different soccer balls, each possessing the traditional 32-panel surface design, were
tested in a wind tunnel. Only seam depth and width varied between the balls. Wind-tunnel …

The following considers the lift and drag response of three commercially available golf balls.
The balls were projected with spin through still air in a laboratory setting to investigate a …

Wind-tunnel experiments were performed on Al Rihla, Telstar 18, Brazuca, and Jabulani,
official match soccer balls used in the World Cup in 2022, 2018, 2014, and 2010 …

Drag and lift coefficients of recent FIFA world cup balls are examined. We fit a novel
functional form to drag coefficient curves and in the absence of empirical data provide …

Surface patterns on objects are important in aerodynamics. We show how surface patterns
on volleyballs modify their aerodynamic performances. Conventional volleyballs with six …

The purpose of this paper is to explore the effective monitoring and countermeasures of low-
altitude UAVs through multisensor coordination so as to escort the sustainable development …

A knuckle shot, resulting from non-spinning kicking, is an essential technique in soccer. The
irregular flight path of the knuckle shot is caused by the aerodynamic force from the three …

In this paper the trajectories of a soccer ball for the most important kicks in the football game-
a corner kick and a direct free kick are studied. The soccer ball is modelled as an ideal rigid …