Experimental evaluation of a computer-vision based method to assess the aerodynamic drag of cyclists
Keywords:Aerodynamics, 3D scanning, CFD, Cycling
We have previously introduced in Science Cycling 2017 an inexpensive method to assess the aerodynamic drag of a cyclist . Last year we presented in the same conference a first evaluation of the method  where the regression method  was used as ground truth. In this work, the few data available had been obtained on a open road, which could increase the source of noise (wind-direction) and imprecision. In this paper we propose a consistent comparison of our method with a larger dataset. This new ground truth is still obtained with the regression method but the data were grabbed on a 200m indoor track (Bourges, France). The dataset contains records for 4 cyclists for 3 positions (top bar position, brakes hood position, bottom bar positions) at 4 different speeds (25, 30, 35, 40 km/h). All variables needed to compute aerodynamic forces are directly measured by sensors (temperature and pressure : Bosch BME280; power : Rotor inPower Powermeter; speed : Garmin 010-12103-00 speed sensor).
 Voiry, M., Lemaitre, C., & Andre, C. (2017). Toward a robust and inexpensive method to assess the aerodynamic drag of cyclists. Journal of Science and Cycling, 6(3)
 Lemaître, C., Voiry, M., & André, C. (2018). First evaluation of an automated system for cyclist’s aerodynamic drag assessment. Journal of Science and Cycling, 7(2), 9.
Grappe, F., Candau, R., Belli, A., & Rouillon, J. D. (1997). Aerodynamic drag in field cycling with special reference to the Obree's position. Ergonomics, 40(12), 1299-1311.
How to Cite
Copyright (c) 2020 Journal of Science and Cycling
This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
Authors contributing to Journal of Science and Cycling agree to publish their articles under a Creative Commons CC BY-NC-ND license, allowing third parties to copy and redistribute the material in any medium or format, and to remix, transform, and build upon the material, for any purpose, even commercially, under the condition that appropriate credit is given, that a link to the license is provided, and that you indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
Authors retain copyright of their work, with first publication rights granted to Cycling Research Center.