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The Why and How of Runway Friction Testing by Delia Harverson Findlay Irvine Ltd.

The Why and How of Runway Friction Testing by Delia Harverson Findlay Irvine Ltd. Midlothian, Scotland delia@findlayirvine.com and Thomas J. Yager NASA Langley Research Center Hampton, VA, USA Part 3: Different kinds of friction testing. What is wrong with the statement:

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The Why and How of Runway Friction Testing by Delia Harverson Findlay Irvine Ltd.

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  1. The Why and How of Runway Friction Testing by Delia Harverson Findlay Irvine Ltd. Midlothian, Scotland delia@findlayirvine.com and Thomas J. Yager NASA Langley Research Center Hampton, VA, USA Part 3: Different kinds of friction testing

  2. What is wrong with the statement: It’s raining heavily – this would be a good time to run our CFME … ? Operational testing (testing in natural conditions) is only useful in freezing conditions More than 1mm water at the tyre-surface interface will lead to misleading results

  3. survey patterns • Operational friction tests almost always consist of a pair of runs, one on each side of the centreline. • Maintenance friction tests may consist of a pair of runs, one on each side of the centreline, or … • Maintenance friction tests may consist of a pattern of runs right across the runway

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