Abstract:

This Data Item is a worked example that describes the application of the tyre-runway model in ESDU 23002, entitled "Tyre braking on dry or water-covered runways - summary of ESDU tyre-runway modelling", to an aircraft-type tyre that operates in a braked state on a water-covered runway.

The decelerating forces on the tyre, a combination of rolling resistance, fluid drag force and braking force, are determined for a range of operating speeds.

Step-by-step solutions, with detailed explanations, are provided for a specific case.

Potential hydroplaning of the tyre is also considered, using the method from ESDU 15003, entitled "Planing of rib-tread aircraft tyres".

This Data Item forms part of a series of worked examples illustrating the application of the model described in ESDU 23002 for estimating resistive forces acting against a tyre operating on a runway surface. ESDU 23009, entitled "Aircraft braking on dry runway - application of ESDU 23002", and ESDU 23011, entitled "Ground-test machine operating on water-covered runway surface - application of ESDU 23002", are further worked examples.