Realistic Rear Axle Hydroplaning during Forward Motion

L. D. Metz; J. R. Kinney; D. Herling

doi:10.4271/2006-01-1560

2006-04-03

Realistic Rear Axle Hydroplaning during Forward Motion 2006-01-1560

Hydroplaning behavior of a single tire running in stationary, undisturbed water of constant depth is a well-studied phenomenon, and has been examined both theoretically and experimentally. Most experimental tire studies have been conducted on drum or flat-track test machines or with towed tires, and correlative expressions for hydroplaning of a single tire have been developed from such tests. Vehicle testing, on the other hand, has typically involved full-scale, proving ground experiments in which gross vehicle motion and behavior were of interest without regard to individual tire contributions.

In the present work, we examine the behavior of a vehicle with rear tires running in a path partially cleared by the front tires. Under such conditions, it can no longer be assumed that the rear tires are experiencing the same hydrodynamic conditions as the front tires, nor does their behavior correlate well with conditions obtained from individual tire testing. For the onset of rear-tire hydroplaning, such path clearing must be considered if realistic results are to be obtained. We present both theoretical and experimental results below.

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Realistic Rear Axle Hydroplaning during Forward Motion 2006-01-1560

SAE MOBILUS