Quote:
Originally Posted by Magajgfha
OK, we all know that the engine bay is very dirty aerodynamically.
In most cars we can't avoid passing some air there.
We also can't make the flow there clean, far from that.
The question is:
Can we make the airflow cleaner than otherwise? Cleaner enough to be worth the effort?
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*an old metric was,that the cooling system could constitute up to 12% of a vehicle's overall drag.
*over the years,automakers have improved on that,with fake grilles,active shutters.
*the 1963 Walter Korff' Chrysler Charger Daytona cooling system would cover the inlet portion of drag,with it's 1/6th-height grille inlet,and fully-ducted passage to the radiator.
*to reduce from there,you'd have to fully duct the extractor portion,with contoured tuned outlets located at low pressure regions on the body.Ferrari has spent over $100,000 to develop a working system such as this.For one specific car.
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The lowest drag cars are electrics,with virtually zero cooling systems,or ICE vehicles,with closed fronts,and rear radiators of integrated,aerodynamically-tuned design.Again,$hundreds of thousands.