Quote:
Originally Posted by JulianEdgar
That all looks very good, but it's probably relevant only if Hucho (2nd edition - 1981 - first English edition 1987) is the one and only car aero reference that's available to you.
I think it is a fantastic book, and it is great that it is available now so cheaply, but as you'd expect, things have moved along a great distance in the last 30-40 years.
So, just as with Scibor-Rylski (another excellent book), you need to read Hucho second edition in the context of its time. That is, it typically covers production cars with high drag values, rough under-floors, notchbacks that look completely different to today, and cars with no ECU-controlled variable aero.
Not to mention that many current production cars' drag coefficients were, back then, the stuff of concept cars or research vehicle one-offs!
I really do think your time could have been better spent measuring some cars' aero behaviour, or inveigling your local library to buy some more recent aero books. (Not sure how that works in the US - here in Australia, each local government area has a free library, and they will often accept suggestions for book purchases. All universities here also allow free access to their libraries - you just walk in and can read to your heart's content.)
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* By default, it's only germane to Hucho's 2nd-Edition. Nothing else was implied.
* With respect to 'context of its time', the 1975, Ferrari CR 25 had Cd 0.256. That's a 'production' car.
* If you allow for the cooling system drag ( 0.025 ), and drag due to the under floor mutilation of a conventional ICE vehicle ( 0.010 ), there isn't a production vehicle available in 2020 which has a lower drag than the 1975 CR 25.
* The 2023 Lucid Air, @ Cd 0.21 would be the first, if you forget the Cd 0.197 EV1 of 1996.
* Contemporary auto designers are real heroes! ( vomit )
* This is 'CONTEXT' for your assessment of contemporary publications.
PS , I don't care what YOU think. (as far as I can discern, you're incapable of it)