What is it about?

The accumulation of snow on runways is a significant problem for airplane landings. This is because the existence of snow between the tires and runway reduces the friction coefficient and increases the braking distance required for landing.

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Why is it important?

This study focuses on the interposition of snow between a landing unit with a rotating tire and a stainless-steel plate and investigates its influence on the friction coefficient.


The investigation uses electrical conductivity to observe the microscopic separation between the silicon rubber and stainless-steel plate. The results show that when using this method, the microscopic separation due to snow can be observed as a range between 0 (direct contact) and 1 (noncontact). In addition, we suggest that the friction mode that occurs during landing may be classified based on the state of snow.

Yoshitaka Nakanishi
Kumamoto Daigaku

Read the Original

This page is a summary of: Investigating tire friction on snow-covered runways using electrical conductivity, Proceedings of the Institution of Mechanical Engineers Part J Journal of Engineering Tribology, January 2019, SAGE Publications, DOI: 10.1177/1350650118822420.
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