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Oh woops okay you're right about that. I still don't think turbulence is an issue as there are cars that channel air into the side, and like I said wheels already have some drag when they spin because most cars come with wheels that don't have covers these days. Sucking air from a perpendicular stream isn't an issue either, because the other side of the fan is also air moving by, the static pressure is approximately equal.
I don't think you can compare directly to a helicopter because a helicopter rotor needs to balance the drag of the main rotors which is a considerable force. Since the second rotor is much smaller it needs to spin fast to generate sufficient force. Here we just want to enhance airflow a little, that is giving the spokes a little bit of angle so they push a small amount of air through the brake rotors. How much this helps, I don't know, but it's definitely better than some of the stuff I've seen. I looked up "active brake cooling" yesterday and I saw some kits for sale that were small tubes with little tiny fans hooked up, good luck with that lol.
Oh and I think heatsinking the calipers is probably a good way to prevent the fluid from boiling?
Oh another random idea, I APOLOGIZE, has anyone ever tried making something that sprays water onto the rotors when they get hot?
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