Quote:
Originally Posted by planetaire
Hi, Vekke
I found a paper about a car for which the front radiators air drag is considered equal to zero.
Probably Julian is talking of this car.
But this car don't answer to Julian sentence:
Because on this paper only the radiator cooling drag is said being zero drag.
They don't speak about the exhaust drag, muffler, catalyst cooling drag. This devices need cooling.
And this zero drag is not because their is an ICE engine, it is because a clever engineer found this idea. The same would be possible for Bev car, Phev car ...
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Yes that is an interesting point.
When I am talking about 'cooling drag', I am talking about the cooling drag of the radiators. This is the approach taken in all technical aero literature, so I feel pretty relaxed about taking this approach.
(In fact, the research I am conducting for my current book appears to indicate at least one car had a negative drag (ie thrust) from the cooling system! But that's another story.)