Aeration of riding helmets: What is the relationship between lab and outdoor measurement? Extreme Physiology & Medicine
Helmet materials have attracted little interest in literature in terms of thermic comforts. Helmet aeration has become an important topic, whether for motorcyclists or cyclists[2, 3]. The relationship between warmth dissipation and the sensed effect varies from helmet to helmet. Fouganza, Decathlon's equine trademark, has made the aeration of riding helmets a top of its list of priorities. First lab and then panel tests were carried out to assess the effectiveness of lab tests and a number of helmets on a 1 to 5 ratio.
Heat and evaporation stability was determined on seven helmets with a dummy in a climate room below 20°C, 40 percent R. H. and two windspeeds (1.3 and 15.0 km.h-1). In this way, four indictors (Rclow velocity, Rchigh velocity, Relow velocity, Rhigh velocity) were obtained. To better understanding the helmet's behavior in trials in the fields, a special 15 rider survey (from Gallop 3 to Gallop 7) was prepared to capture the individual answers of four helmets on a 9-point dial (from unventilated to very ventilated) after an intensive 45-minute practice at the Roubaix Riding Centre.
Of the four indications, it was found that the clow velocity is significantly related to the venting of riding helmets. While the general classification has not changed with the selection of the other factors Rehigh and Relow and Rchigh speeds, they are not more indicative of actual use. So we obtained the coefficient of equality aeration = ? the clow velocity + ?, so we ranks our palette of helmets.
This test will also result in a significant improvements in the design of helmets in terms of aeration.
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