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Old 07-01-2020, 04:42 PM   #3461 (permalink)
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I wonder if those folks figured out how the pagoda-like Corvair Greenbrier had such a low Cd. The feared uniformity of aero design certainly yields quickly to careful detailing.

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Old 07-01-2020, 05:30 PM   #3462 (permalink)
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  • Didn't graysgarage score a job with Lucid Air? Designing a twin-vortex air intake for the lower fascia? Google denies he was ever a user [4 spellings].
  • I'll bite how low is the Greenbrier's Cd?

For the thread's sake, here's L'Universelle

https://i.pinimg.com/736x/98/5b/69/9...785b4c56ab.jpg
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We are operating at an overall mechanical efficiency of only four percent… Therefore, we find that if we increase the overall mechanical efficiency to only twelve percent we can take care of everybody. That three-fold increase in the overall efficiency can only be accomplished by redesign. – R. Buckminster Fuller

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Old 07-02-2020, 05:17 AM   #3463 (permalink)
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Cd 0,074...
0,21kw for 60km/h
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Old 07-03-2020, 03:04 PM   #3464 (permalink)
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Very fashionable in this day and age of covid...

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http://www.deccanchronicle.com/16010...?gImgId=169941

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Old 07-04-2020, 07:54 AM   #3465 (permalink)
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And politics.
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Old 07-04-2020, 12:36 PM   #3466 (permalink)
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For politics it would need two steering wheels.
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We are operating at an overall mechanical efficiency of only four percent… Therefore, we find that if we increase the overall mechanical efficiency to only twelve percent we can take care of everybody. That three-fold increase in the overall efficiency can only be accomplished by redesign. – R. Buckminster Fuller

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Old 07-05-2020, 07:15 PM   #3467 (permalink)
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I'm finding things that could go in the aero or un-aero thread. In this case, the AnyCar III, I'd ignore the front end. It has a Rolls Royce grille with an electric wheelchair attached to it. George Barris didn't have a fraction of the taste his brother Sam had.


http://smallcarsclub.com/wp-content/...car-III-05.jpg


http://www.barris.com/carsgallery/no...ges/anycar.png

The VW Type III has a very good windshield (for not being three-piece). It has a Buick boat tail. If the fenders followed the original taper in plan, narrowed at the back, with a bellypan around the engine and back to the bumper; then the aerodynamics would be improved.
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Old 07-06-2020, 01:27 PM   #3468 (permalink)
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Cd 0.37 - .38

Quote:
Originally Posted by freebeard View Post
  • Didn't graysgarage score a job with Lucid Air? Designing a twin-vortex air intake for the lower fascia? Google denies he was ever a user [4 spellings].
  • I'll bite how low is the Greenbrier's Cd?

For the thread's sake, here's L'Universelle

https://i.pinimg.com/736x/98/5b/69/9...785b4c56ab.jpg
I believe that this is the number shared by GM. That would be from scale- model testing at the GALCIT tunnel at Cal Tech, Pasadena, California.
As with BEVs today, there's no significant front grille or cooling system drag, which would add Cd 0.025, as of around 2005.
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Old 07-06-2020, 01:37 PM   #3469 (permalink)
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Quote:
As with BEVs today, there's no significant front grille or cooling system drag...
The radiator is mounted behind the driver's seat, with air intake through twin ducts that IIRC ran through the doors, with an exhaust chimney. For possibly more than 0.025 delta.

If that was about the Greenbrier, cooling system drag is substituted by fan power. No Mustang (car or plane) ram air for cooling.
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We are operating at an overall mechanical efficiency of only four percent… Therefore, we find that if we increase the overall mechanical efficiency to only twelve percent we can take care of everybody. That three-fold increase in the overall efficiency can only be accomplished by redesign. – R. Buckminster Fuller

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Old 07-06-2020, 01:50 PM   #3470 (permalink)
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Quote:
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The radiator is mounted behind the driver's seat, with air intake through twin ducts that IIRC ran through the doors, with an exhaust chimney. For possibly more than 0.025 delta.
The Greenbrier I was thinking of had the Corvair air-cooled engine in back and used to surprise new drivers with its coasting ability. Legend has it that the radiator on the North American P-51 Mustang used the expanding air to achieve negative drag, but when the Rutan crew set out to fly Voyager around the world, they spent a lot of time getting the cooling drag down to 20% of the total.

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