Discovery Channel - Wind Powered Vehicle
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excellent idea.. dont think about what people would think/... do your job!!!! one thing you should add batteries so turbine will charge it overnight and use that energy to go faster nest morning. also i would use VAWT
yanikivanov 1 year ago
The explanation is overcomplicated here. A static sail won't be able to get any more push from the wind once the vehicle is travelling at the wind speed, so it can't go faster. This isn't a static sail though. It is essentially a rotating sail which presents a slower apparent speed to the wind, i.e. the blades move backwards (in a way), giving the wind something to push on. As long as the wind has something to push it can do work on the car.
TravisMorien 1 year ago
What wasn't made clear was that the feedback is taking advantage of the difference between wind speed and ground speed. With a tailwind, the apparent wind experienced by the cart is less than the ground speed. This allows the prop to be "geared" to produce thrust at a lower speed than ground speed, but with more force than ground force (after some power losses). The prop wash slows down the tailwind (versus ground) speed, the same as any sailcraft.
rcgldr 1 year ago
Wind speed relative to cart speed is irrelevant. It's like saying airplanes will never fly because they are heavier than air. It's converting he angular momentum of the propellers to linear momentum of the cart. So as long as the wind is strong enough to move the propeller they go forward.
Nomoreidsleft 1 year ago
Well done boys !!
-nonmythicaldragon
WebDragonz 1 year ago