ESDU 23003
Static braking-force coefficients for tyres on wet and dry surfaces
Abstract:
This Data Item provides mathematical relationships for determining the static decelerating-force coefficients acting on pneumatic tyres operating on dry and water-covered surfaces. The applicable surfaces include those constructed of asphalt, macadam, Portland Cement Concrete, glass and epoxy resin.
These empirical models were derived from data collected over a period of some four years from experiments on cross-ply (Type VII) tyres as part of a detailed study of the mechanical properties of aircraft tyres. Three sizes of tyre were used in the experimental studies. The tyres were fitted to the modified undercarriage of an aircraft.
The modelling described in ESDU TM 202, entitled 'ESDU tyre modelling - rubber block forces', for the static decelerating-force coefficient on rubber blocks is the starting point from which a model for pneumatic tyres is developed.
Although the models were developed using data from cross-ply tyres, it is most likely appropriate to use them for all modes of construction of aircraft tyre.
Indexed under:
- None
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