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Armann Norheim

 

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Friction testing through the years

The history of the world includes many well known inventions…

8 December 2011 | By Armann Norheim, Leader of the ICAO Friction Task Force (FTF)

The history of the world includes many well known inventions which have had a significant influence on technological developments. One of these is the Dynamometer, a device used for measuring force, moment of force (torque) and power. Dynamometers have been a vital and necessary component in instruments that can identify…

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Maintaining friction

In railroad engineering, the factor of adhesion of a locomotive…

10 June 2011 | By Armann Norheim, Leader of the IATA Friction Task Force (FTF)

In railroad engineering, the factor of adhesion of a locomotive is the weight on the driving wheels divided by the ‘starting tractive effort’. Adding extra power serves no purpose since there is not enough traction (adhesion, friction) to create useful work. The factor of adhesion which is 25% of the…

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ICAO – Regulators – Friction issues

Reporting the conditions of the critical tyre/surface in a way…

16 July 2009 | By Armann Norheim, Advisor for Avinor & Leader, ICAO Friction Task Force

Reporting the conditions of the critical tyre/surface in a way relevant to aircraft performance has been a long sought goal. There have been a lot of challenges for the aviation industry since the first reporting systems emerged and the regulating bodies have their role to play in achieving the goal…