Of course the air is also flowing around the sides of the vehicle. In fact, there is more air going around the sides of, say a minivan, than going over. Often overlooked, I think, because of all the profile images we see. Wind tunnel plan views seem to be exceedingly rare.
Have you seen any?
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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.
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