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Heat actuated flaps
VW beetles and most of the air cooled VWs have a small bi-metal bellows which by way of a pushrod, open the flaps under the fan shroud. I kept a spare one for years hoping to use it somewhere. That could be set up for this kind of use with a long pushrod.
BTW VW beetles have no front grille but use belted fan to cool the engine. Tell that to anyone worried about grille blocks.
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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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