Hostname: page-component-78c5997874-lj6df Total loading time: 0 Render date: 2024-11-14T23:12:57.923Z Has data issue: false hasContentIssue false
  • English
  • Français

The dynamic response of an aircraft wheel to variations in runway friction

Published online by Cambridge University Press:  04 July 2016

A. G. Wattling
A. G. Wattling*
Affiliation:
Department of Aerospace Engineering, University of Bristol
Get access Rights & Permissions [Opens in a new window]

Abstract

Experimental and analytical techniques are presented for the determination of the response characteristics of a scale-model aircraft wheel to changes in runway friction. Results obtained from tests using these techniques are given. The wheel spin-up acceleration is shown to be proportional to wheel load and to the magnitude of the surface friction coefficient after surface change. It is also found to be inversely proportional to brake torque, but is largely independent of speed. An increase of speed is shown to increase the distance required for spin-up of a locked wheel as it encounters surfaces of higher friction coefficient. Good correlation of these trends is obtained analytically.

The effects of tyre flexibility are indicated by the results of both the experimental tests and the analytical simulations. These effects may degrade the performance of aircraft antiskid braking systems. It is recommended, therefore, that simulations used in the development of such systems take proper account of tyre flexibility when modelling the dynamics of the wheel and tyre.

Type
Research Article
Information
The Aeronautical Journal , Volume 92 , Issue 915 , May 1988 , pp. 169 - 178
Copyright
Copyright © Royal Aeronautical Society 1988 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Tanner, J. A. Review of NASA Antiskid Braking Research, SAE 821393, Oct 1982.Google Scholar
2. Agrawal, S. K. Braking performance of aircraft tyres, Prog Aerosp Sci, 1986, 23, (2), 105–150.Google Scholar
3. Walton, D. An investigation of the soft ground rolling resistance of aircraft landing gear using model techniques, PhD thesis, Department of Aeronautical Engineering, University of Bristol, 1974.Google Scholar
4. Shanks, D. H. and Barrett, R. V. Performance of aircraft pneumatic tyres in soft soil, Aeronaut J, Jan 1981, 85, (840), 20–28.Google Scholar
5. Wattling, A. G. The Dynamic Response of an Aircraft Wheel to Variations in Runway Friction, PhD thesis, Department of Aerospace Engineering, University of Bristol, March 1988.Google Scholar