Method and a device for use in determining conditions of runway

Details Method and a device for use in determining conditions of runway Method and a device for use in determining conditions of runway

1989-04-04

1990-09-25

Noland, Tom

Measuring and testing

Frictional resistance, coefficient or characteristics

73146, G01N 1902

Patent

active

049585126

ABSTRACT:
In order to determine conditions of runway friction by measuring and recording forces acting on a braked wheel rolling on a runway, a vertical force and a horizontal force are exerted on the wheel, the horizontal force being provided by braking the wheel. The forces are recorded directly and the friction coefficient and its sense of change are determined on the bases of recorded values and by the fact that the braking force is continuously changed, to find the peak of the friction coefficient/slip-curve.

REFERENCES:
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patent: 3977243 (1976-08-01), Yamada et al.
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patent: 4662211 (1987-05-01), Strong
patent: 4779447 (1988-10-01), Rath
patent: 4909073 (1990-03-01), Takahashi et al.
"Methods of Testing Friction-Braking Pairs"; Russian Engineering Journal, vol. VIII, No. 1; pp. 16-17, B. G. Keglin et al.; in 73/9; 1973.

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