Thread: Vents
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Old 08-15-2018, 12:20 PM   #21 (permalink)
aerohead
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ever helped?

Quote:
Originally Posted by fusion210 View Post
Have hood vents ever helped? From what I've seen that's a positive pressure area all around.
Yes,Hucho spoke of reducing the cooling system drag,from say 12% of overall drag,down to 2% with 'good racing design.'
2% would require a fully-ducted,airtight, inlet and outlet design.
Since the 1978 Pininfarina CNR car is the only vehicle designed for low drag it might serve as a benchmark for low drag in a passenger car.
The inlet would be sited exactly at the forward stagnation point,and the extractors would be designed to merge the engine bay air,out into the surrounding flow at exactly the same velocity and direction.Something that cost them a $100,000 to figure out.

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