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"Faster than the wind," impossible they say but the Blackbird settles the debate
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I think aerohead begs to differ on this.
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That is exactly what is NOT happening. The rotor spins against the wind!
It does not drive the wheels at any moment. instead it exerts a force on the wheels fighting its motion (but losing), or rather the ground forces the wheels to turn which through the gearing drives the propeller to turn slowly against the wind.
It is just the wind blowing against the blades of the propeller which moves it forward, like a sail would.
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So you are saying that the car would accelerate faster if the blades were stationary and not connected to the wheels? At least in the beginning?