Method and system for determining friction coefficient μ for an aircraft landing event

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United States of America Patent

PATENT NO 9798838
SERIAL NO

14005500

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Abstract

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Method and system of determining ground-to-tire friction coefficient for an aircraft landing event. The method uses an aircraft computational model to repeatedly model the landing event, varying one or more initial conditions of the aircraft model until a best match between a modelled value and a provided value of aircraft vertical acceleration is determined. The method uses initial conditions associated with the best match of modelled and provided vertical acceleration values and a strain value from a sensor on the aircraft landing gear, with the ground-to-tire friction coefficient is a variable. The method models the landing gear to generate a modelled strain value and compares this with the measured strain value, and repeats the landing gear modelling step with a different value for the ground-to-tire friction coefficient until a best match between the modelled strain value and the measured strain value is determined and outputting the respective friction coefficient value.

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Patent Owner(s)

Patent OwnerAddress
SAFRAN LANDING SYSTEMS UK LTDGLOUCESTER GLOUCESTERSHIRE GL2 9QH

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Collett, Laura Cheltenham, GB 2 5
Sartor, Pia Cheltenham, GB 2 9
Schmidt, Kyle R Charlton Kings, GB 3 6

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