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Unread 11-01-2009, 16:09
ComradeNikolai ComradeNikolai is offline
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Re: Team 2526 - Propeller Propulsion Prototype.

Quote:
Originally Posted by s_forbes View Post
One neat thing about propeller propulsion is that (unlike using wheels) your pushing force doesn't depend on the weight of your robot.
I could be wrong here... I may have forgotten all my physics.
Since this is a near ideal surface, Ff = mu * N; the force of friction is how much "pushing force" you have, so it would depend on your weight. However, once you calculate your maximum acceleration, you have to divide out your weight again, so your actual acceleration does not depend on the weight of your robot, only the coefficient of friction and the constant acceleration of gravity.

Also, could you run through the numbers where you got 9 lb of pushing force for a fully weighted robot? Does this include bumpers and batteries, or just the 54 kg? I got slightly different numbers, but I haven't reviewed my physics for quite a while.
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