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Front and side profiles of Figure 2. Giro Advantage with vents taped and helmets in this study visor

Front and side profiles of Figure 2. Giro Advantage with vents taped and helmets in this study visor

Source publication
Preprint
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** This is a preprint of an article published by Sage Publishing in the Proceedings of the Institution of Mechanical Engineers, Part P: Journal of Sports Engineering and Technology on 12 January 2019, available online: https://journals.sagepub.com/doi/abs/10.1177/1754337118822613 ** Within the sport of cycling, aerodynamic efficiency is a fundame...

Contexts in source publication

Context 1
... study used three commercially available bicycle helmets, and three 3D printed prototype helmets as shown in Figure 1. The S-Works Evade (Specialized Bicycle Components, Morgan Hill, CA, USA) was selected as the baseline helmet for comparison since it is a commonly available helmet and is widely used by recreational and professional cyclists for its aerodynamic and thermal properties. ...
Context 2
... comparing the closed and open vents of Prototype 2, there is a 4.1% increase in CdA with the vents open. Referring to the side view of the helmet in Figure 1e it is clear that the open vents increased projected area exposed to the flow, acting like scoops, resulting in higher CdA measurements. When viewed in isolation this might be viewed as a negative result for the design of this helmet. ...