This Data Item demonstrates the application of an empirical model in order to calculate the retarding forces acting on an aircraft-type tyre that operates in a braked state on a runway that is covered by a layer of loose snow. Decelerating forces are calculated for a wide range of operating speeds and a variety of loose snows with varying water contents are considered.

Step-by-step solutions, with detailed explanations, are provided.

The Data Item forms part of a series of Data Items which outline application of the empirical model that is defined in ESDU 10015, Model for performance of a single aircraft tyre rolling or braking on dry and precipitate contaminated runways, and summarised in ESDU 05011, Summary of the model for performance of an aircraft tyre rolling or braking on dry or precipitate contaminated runways.

Background information relating to the application of the model is given in ESDU 10002, Introduction to worked examples of tyres rolling or braking on dry or precipitate contaminated runways. Application of ESDU 05011 and ESDU 13007.