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Old 05-18-2017, 03:54 PM   #11 (permalink)
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Actually one of the best ever designed noses, is from the 1970 Plymouth Superbird. With that nose and rear window modification Plymouth was able to drop the Belvedere/ Roadrunner that probably originally had a Cd in the mid .40's, down to a .28 Cd.

The A pillars and windshield slope were the only things keeping the Cd above .25






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Old 05-19-2017, 02:32 AM   #12 (permalink)
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Mr. aerohead please comment
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Old 05-19-2017, 03:14 AM   #13 (permalink)
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Plymouth Superbird and Dodge Charger Daytona, aero supercars
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Old 05-19-2017, 09:16 AM   #14 (permalink)
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Originally Posted by slipknotsv View Post
Those look like Fiero wheels. It wouldn't be a stretch to build that thing on a fiero chassis. There's nothing except trunk space and the muffler past the rear wheels...there's no real need for anything past 'em.
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Old 05-19-2017, 09:40 AM   #15 (permalink)
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I have never seen that car or a photo of it from any other direction.

It looks like an X-wing frim starwars or the equivalent from the old battlestar galactica.
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Old 05-19-2017, 12:33 PM   #16 (permalink)
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It looks hard to get in and out of.

Quote:
The Daytona's rear wheels tended to lose their traction, until that massive spoiler was put on, because it carried a standard 440 cubic inch, 375-hp engine, and air would flow under the car and lift it.
The quote and the chin spoiler show it isn't quite ideal. Lowering the stagnation point seems called for. Good for it's day, though.

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Old 05-19-2017, 10:09 PM   #17 (permalink)
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Cd 0.18





Blunt nose is lower drag. Pointy noses apply only above 250MPH.
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Old 05-19-2017, 10:58 PM   #18 (permalink)
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The idea behind reducing aerodynamic drag is to disturb the air as little as possible as you drive through it, the more you disturb it, the more it swirls around after you pass, the more energy it takes to keep moving. The longer sloping tail helps the air to gradually get back into the place it was before you drove through it, thus making it swirl about less, and this is what reduces drag.

A pointy nose may help a bit, but the air is going to move up, and sideways to go around your vehicle regardless of the shape in the front, it will in fact form a fairly good shape itself because the air knows you're coming several feet before you reach it.

From what I've learned here, 25-30% of aero gains can be had in the front, another 70-75% is shaping it right in the back.
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Old 05-20-2017, 12:50 AM   #19 (permalink)
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Leave a few % for the vehicle/ground plenum.
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Old 05-20-2017, 04:47 AM   #20 (permalink)
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Quote:
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I have never seen that car or a photo of it from any other direction. ....
Because it is ( imho ) completely PhotoShopped. Look at the shadows and perspective inside the canopy. But I might be completely wrong, of course.

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aero, aerodynamic car, car, design, wedge

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