Quote:
Originally Posted by seifrob
Lucky you! These were wild, dangerous, but wonderful times. A lot of euphoria in the air, adventure without borders.
And I bet you felt like in some wild dream set 40 years back.
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I was recently married but did not mind looking at the beautiful Czech women, and the architecture that I was there for was very cool too.
I was told it changed quite a bit from just a year or two prior by one of my classmates, I can only imagine the pace picked up even more after I left. I loved that it was not spolied but did eat at the New York Pizza and McDonalds near the end of the six weeks. Only so much goulash an American can eat. I do remember the pivo, Děkuji.
Regarding the topic, I wonder if the Aerotech intakes and exhausts would work half as well under the belly.
Photos of 290mph speed record shattering Oldsmobile “Aerotech” : theCHIVE
FYI: Aerohead, some of our old Photobucket images seem to be reappearing.
https://ecomodder.com/forum/showthre...e-29689-6.html
Quote:
Originally Posted by aerohead
Morelli spent $100,000 or so at Pininfarina to optimize the extractors on his 1978 CNR 'banana' car.
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Another image from page one of that old thread.
Quote:
Originally Posted by freebeard
My mention of pic#1 was distracting; I meant what range of vehicles are you considering. I assume front-engined and water cooled.
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From page 5:
Quote:
Originally Posted by aerohead
If you look directly above the front wheel,near where the windshield edge would be,you'll barely make out a slot which is oriented with the color dye solution.
I believe that there are corresponding slots below as well.
Morelli divided the cooling air coming out of the engine bay into 4-different streams and experimented with duct size and geometry such that the air escaping out these slots blended perfectly with the surrounding flow field.
An isobaric/velocity contour map was created by pressure tap and velocity pressure measurements (you see this today in color CFD mapping),and working with Bernouli's Theorem,arrived at duct sizes which provide the air volume at a matched velocity,given the pressure environment its flowing into.
This cannot be modeled analytically yet and must be done by trial and error in the tunnel.(very expensive!)
If you get it wrong:
*air can flow into the exits
*jets can be formed which trigger shear-induced vorticity,eddies,turbulence
*Transverse-vectored jets can contaminate the boundary layer,trigger separation,along with the formation of form additional vorticity.
My opinion is that 'nailing' this sort of thing is completely outside the scope of what individuals can pull off without major money.
*air can stall within the duct
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EDIT:
Click on the images in this website link below, they get huge and you can see every detail of the "banana car".
Concept Car of the Week: Pininfarina CNR-PF (1978)
by Rufus Thompson 12 Oct 2012
https://cardesignnews.com/media/impo...86/252086.html