Thread: Can the Plane Take-Off?
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Unread 05-12-2005, 00:05
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Re: stolen from another forum
Quote:
Originally Posted by KenWittlief
The engines on a plane do not react off the runway. If they did, then how do planes in alaska with skis instead of wheels get off the ground?!
The coefficient of friction of the air speed pushing back wards, overcomes the static coefficient of the snow, and lets the ski's move forward, and the snow stays put..

(ignoring sticky snow of course)

For the plane not to move in the snow, then the coefficient of the air speed friction, will have to be equal, or less than the coefficient of the snow/ski's relation.

Also, it has to actually be greater, since there is a funky term (which name escapes me now ) that overcomes the coefficient and let's it move freely..
(it's basically the force necessary to overcome the friction (break the grip between surfaces so to speak) and get it rolling, but it is not equal to a "rolling start" coefficient of frictional speed.
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Last edited by Elgin Clock : 05-12-2005 at 00:15.
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