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Old Jan 4, 2008 | 07:24 AM
  #83  
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Skelly_GSR
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Originally Posted by LT
No, because the friction coefficient between the fuselage and runway would be too great for the engines to overcome. Hence, the wheel which is the centerpoint for gravity forces against the airframe to meet the runway on a small contact patch. This gives planes the ability to take off. A moving runway opposite the planes take-off trajectory will only spin the wheels 2x faster than the planes speed. However, the thrust of the engines will still push the airframe against that small friction up the conveyor to take-off speeds.


edit: you keep editing so I have to keep updating this. First, gravity is pulling the plane down. Atmospheric pressure is pushing the plane down. You're thinking of physics involving power to the wheels. The wheels on a plane have no use other than to suspend the fuselage off the ground, reduced friction upon take-off, and make landing easier.

lt, lets leave this to the engineers.
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