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  1. Jean Claude

    Rolling drag of aircraft wheels on a grass runway

    Title: The rolling friction of several airplane wheels and tires and the effects of rolling friction on take-off Author: J. W. Wetmore NACA report n° 583 naca-report-583 - Abbott Aerospace Canada Ltd Comment: Interesting measurements of the variations of rolling coefficient according to the...
  2. Jean Claude

    Rolling drag of aircraft wheels on a grass runway

    Title: The rolling friction of several airplane wheels and tires and the effects of rolling friction on take-off Author: J. W. Wetmore NACA report n° 583...
  3. Jean Claude

    Wheel brakes

    All bicycle brake discs are mounted in the direction shown on this picture. That is to say with "spokes" working in compression rather than in traction (white arrows) This seems to me to take the unnecessary risk of buckling. Does anyone know the reason for this surprising direction?
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