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why not use that wind pushing on the front of your car to do some good.
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Why not indeed. Because science. You can not gain energy by increasing the drag on your vehicle with a fan. The drag will exceed the energy produced and result in a net loss.
The law of conservation of energy As the kids used to say: Reality bites.
The only scenario in which a fan would work is if you used it as an air brake that deployed only when slowing the vehicle. In that case you might as well be using an electric motor driven by the wheels. Hard to implement in any event.
As for driving your alt off the rear wheel, your engine is already providing the energy to drive that wheel. There is no free energy. Using the alt to regen during braking is one way to scavenge energy that would be lost to heat.
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Vortex generators are old tech. My new and improved vortex alternators are unstoppable.
"It’s easy to explain how rockets work but explaining the aerodynamics of a wing takes a rocket scientist.
