Quote:
Originally Posted by Frank Lee
I've read (IIRC Hucho) that a properly designed radiator inlet/outlet duct system can theoretically add thrust due to the addition of the heat energy. Since they said "theoretically" I take it nobody has done it, or measured it?
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It has been done on Air Racers (P-51 Mustangs primarily) at Reno using the same concept (and using heat from the oil cooler as well), but I don't recall hearing about how much it helped the speed, if at all. It makes sense to me in theory, I would imagine the ducting would have to be precisely shaped to minimize any drag on the way out, I would also imagine that it would take up a fair amount of space which would make it impractical for smaller cars.