Aerodynamics Analysis for an Outdoor Road Cycling Helmet and Air Attack Helmet

Abstract

Abstract-The study of aerodynamics is very crucial in the world of cycling. Wind tunnel experiment is conducted on most of cycling equipment that is used by a rider and it is a serious factor in the development of cycling sport. This paper represents the aerodynamics analysis of sport cycling helmet and the comparison between a standard road cycling helmet and Air Attack helmet. The test was conducted in a several constant wind tunnel velocity that best reflects the apparent wind velocity that the rider would experience. The test set collects data for 7 different speeds from 3 m/s to 15 m/s. A data set was recorded for each helmet at two different pitch angles which is 0⁰ and 25⁰ angle. The testing result showed that aerodynamic helmets offer drag reduction over a standard road cycling helmet.Index Terms-Aerodynamic drag, cycling, coefficient of drag, helmets, six component balance, wind tunnel.