@article{ref1,
title="Influence of wind speed and road grade on the estimation of drag area in cycling",
journal="Sports biomechanics",
year="2021",
author="Roa, Sergio and Polanco, Alejandra and Muñoz, Luis and López, Omar and Suárez, Daniel R.",
volume="ePub",
number="ePub",
pages="ePub-ePub",
abstract="The estimation of aerodynamic drag in cycling through road tests has the advantage of considering actual cycling conditions. The main drawback is that its accuracy  depends on factors of the testing scenario as the wind speed (vw) and the road grade  (θ). For that reason, the effect of vw and θ on the estimation of drag area ( CDA )  was studied. Numerical and experimental approaches were combined. The numerical  approach investigated the sensitivity of CDA to vw and θ perturbations. The  experimental approach analysed the effect of including or not vw and θ on the  identification of CDA by comparing the changes in the prediction of power delivered. It was found that disregarding small values of vw (e.g. 0.5 m/s) and θ (e.g. gradient of 0.05%) leads to errors in the estimation of CDA of around 10%, referred  to the actual value. It was also obtained that the average error of the power  prediction when considering vw and θ for the identification of the parameters is  about 4.4% and about 25.5% when vw and θ are neglected. It is concluded that  including vw and θ data reduces the error on the identification of CDA through  outdoor road experiments.<p /> <p>Language: en</p>",
language="en",
issn="1476-3141",
doi="10.1080/14763141.2020.1837925",
url="http://dx.doi.org/10.1080/14763141.2020.1837925"
}