The Effect of Crosswinds on Cyclists: An Experimental Study

Fintelman, D.M.; Sterling, Mark; Hemida, Hassan; Li, F.-X.

doi:10.1016/j.proeng.2014.06.122

Cited by 27 publications

(24 citation statements)

References 5 publications

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“…On the drag effective frontal area, the effect of the yaw angle's increase is to increase it, up to 10-15° and then gradually decrease, contrary to the side effective frontal area that increases with the yaw angle's increase [9,10]. Accordingly, in this work the maximal CDA values were obtained at 10-15° of yaw angle; and the ones of CSA increase with the yaw angle's increase.…”

Section: Discussionmentioning

confidence: 47%

Racing Wheels’ Effect on Drag/Side Forces Acting on a Cyclist at Sportstech-Miun Wind Tunnel

Petrone

Giacomin

Koptyug

et al. 2018

The 12th Conference of the International Sports Engineering Association

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the wind tunnel at the SportsTech Research Centre at Mid Sweden University (MIUN, Ostersund) was opened in 2015 for sports technology research. It is dedicated to analysis of equipment performance and garment development and suitable for roller skiing, running and cycling. The aim of this work was to develop and apply a full-scale method to investigate the aerodynamic behaviour of a cyclist facing front and cross wind at different yaw angles (from 0° to 30°) and speeds. To reach this goal, a rotating structure supported by a force platform was constructed. It includes a set of rollers on which fully unrestrained cycling is possible. The method was applied to the comparison of three wheelsets (differing in material, height and shape of the rim, number and shape of spokes) in terms of drag and side aerodynamic forces during a cyclist's ride at 30 km/h, while keeping all the other factors constant. Resulting curves allowed estimating differences of 4% and 9% when applied to a recent time trial competition with supposed wind conditions.

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Section: Discussionmentioning

confidence: 47%

Racing Wheels’ Effect on Drag/Side Forces Acting on a Cyclist at Sportstech-Miun Wind Tunnel

Petrone

Giacomin

Koptyug

et al. 2018

The 12th Conference of the International Sports Engineering Association

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“…This is a minimal, three-degree of freedom, model of a bicycle rider system that is still able to show realistic lateral dynamics. The lateral forces generated by the crosswind are obtained from a recent experimental study by Fintelman et al [11]. They measured the aerodynamic forces on a full-scale bicycle with mannequin for a variety of crosswind angles ranging from 0 to 90 degrees in a wind tunnel.…”

Section: Methodsmentioning

confidence: 99%

“…For the aerodynamic forces the experimentally obtained data from Fintelman et al [11] is used. They measured, in an open subsonic wind tunnel, the forces and moments exerted by the wind on a full-scale bicycle with mannequin.…”

Section: Cross Windmentioning

confidence: 99%

“…Unfortunately, Fintelman et al [11] did not measure the reaction steer torque which kept the steering angle zero. For the crosswind it is assumed that absolute wind speed, with respect to the inertial coordinate system O-xyz, is constant in size, vw and direction, α, see Figure 2c.…”

Section: Cross Windmentioning

confidence: 99%

“…Finally, with these values the aerodynamics coefficients, CxA, can be interpolated from Figures 3 and 6, as presented by Fintelman et al [11], and the generalised applied torques (3) due to the crosswind can be calculated.…”

Section: Cross Windmentioning

confidence: 99%

See 2 more Smart Citations

Some Effects of Crosswind on the Lateral Dynamics of a Bicycle

Schwab

Dialynas

Happee

2018

The 12th Conference of the International Sports Engineering Association

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The bicycle, being unstable at low speed and marginally stable at high speed, is sensitive to lateral perturbations. One of the major lateral perturbations is crosswind, which can lead to accidents and fatalities. Here we investigate the effect of crosswind on the lateral dynamics and control of the bicycle in a wide range of forward speeds and various crosswinds, by means of computer model analysis and simulation. A low dimensional bicycle model is used together with experimentally identified rider control parameters. The crosswind forces are obtained from a recent experimental study. Analysis and simulation show that crosswind decreases the stability of the bicycle and is clearly a safety issue.

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