ESDU 15003:2016
$89.05
Planning of Rib-Tread Aircraft Tires
Published By | Publication Date | Number of Pages |
ESDU | 2016-07 | 22 |
ESDU 15003 comprises methods for predicting the speed at which an aircraft-type tyre experiences planing when travelling on a water-covered runway surface. The methods were developed after it became apparent that the frequently-used VP = 9p relationship for planing was inappropriate in numerous investigations.
Two types of planing are defined: partial planing, which is manifested by a reduction in the water spray ejected by a tyre, tyre spin-down and the fluid drag force reaching its peak value, and complete planing, which results in a loss of contact between the tyre footprint and ground surface, a loss of directional stability and a loss of braking action. Mathematical relationships for determining the speed at which each type of planing occurs are provided.
The methods are empirical in nature and are the results of a comprehensive analysis of the planing of rib-tread aircraft tyres on water-covered runway surfaces. Their development is outlined in detail.