05-02-2018, 09:45 AM
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#451 (permalink)
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Someone with a tall bike wants to set a speed record behind that pace car?
It might rotate at speed and end up sliding down the road on it's butt.
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Today
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05-07-2018, 07:55 AM
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#452 (permalink)
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Master EcoWalker
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That Smart has a hitch. I bet this is indeed done for aerodynamic purposes.
It is tall and narrow, so the trailer should be too. Horse box?
The exhaust pipes are wasteful though. Not even functional.
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2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut.
lifetime FE over 0.2 Gigameter or 0.13 Megamile.
For confirmation go to people just like you.
For education go to people unlike yourself.
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05-07-2018, 03:52 PM
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#453 (permalink)
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EcoModding Lurker
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some of them looks so terrific, dream about do in my toyota GTX this kind of layout.
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06-20-2018, 10:53 PM
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#454 (permalink)
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Master EcoModder
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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06-21-2018, 12:38 AM
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#455 (permalink)
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Open wheels, big frontal and wet areas and not enough taper in plan?
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06-21-2018, 09:52 AM
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#456 (permalink)
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Master EcoModder
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Quote:
Originally Posted by freebeard
Open wheels, big frontal and wet areas and not enough taper in plan?
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Yea, I think those are the reasons typically given.
Also those rear wheels are just drag humps, they are not true fairings in an aerodynamic sense.
I'm not sure about the phrase "frontal area" or "big frontal area" in regards to this vehicle.
I think despite the wings it has a small "A" in the CdA formula, and isn't that the frontal area or area known as large case "A"?
The "A" is very small on this car in my opinion.
In short, it's the wheels both front and back that make this a high drag car.
In my mind the slim wings, bubble canopy and even pointy nose more than make up for the wheels in a gross energy consumption kind of way. However, that may be my imagination being manipulated by the designers use of a cliche aerodynamic vocabulary.
Like putting a wing on a car makes it go faster, not always the case, just case of "association" ( small case - haha).
EDIT: an article that includes "frontal area".
An Introduction to Automobile Aerodynamics
https://mechanixillustrated.technica...-aerodynamics/
The simplest explanation I could find on the Internet is below, the Quora ones are very complex and detailed.
https://www.purplezeus.com/aerodynamics.html
Quote:
As the aircraft moves through the air it pushes air out of its way. Projected frontal area is a measurement in square units that describes how much air an object moves as it travels.
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I think if I bothered to look up an Aerohead quote in the forum on "A" I would find a textbook quality definition of "frontal area".
NOTE: could be different than, cross-sectional area of the test section
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
Last edited by kach22i; 06-21-2018 at 10:14 AM..
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06-21-2018, 11:58 AM
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#457 (permalink)
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Master EcoModder
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The aphorism from Bonneville is "It's not how big a hole you punch in the air, it how big a hole you leave in the air".
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07-10-2018, 04:38 PM
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#458 (permalink)
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Master EcoModder
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A couple more efforts that almost made it, but missed the mark for one reason or another.
Random TRANSPORTATION pictures - Page 2057 - Pelican Parts Forums
Archived Drive: DOME P-2
https://www.roadandtrack.com/car-cul...rive-dome-p-2/
Quote:
From the 1979 September issue of Road & Track
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Maybe the P-2 did better than I suspect with those rear buttresses?
[IMG]https://hips.hearstapps.com/roa.h-cdn.co/assets/16/25/1600x800/landscape-1466871018-dome-p-2-1.jpg?resize=980:*[/IMG]
[IMG]https://hips.hearstapps.com/roa.h-cdn.co/assets/16/25/1600x1911/gallery-1466871165-dome-p-2-rear-above.jpg?resize=768:*[/IMG]
Recalling the early Aerovette series, it was the underbelly that ruined the Cd numbers on these spiffy looking mid-engined cars.
More views:
https://www.lotusespritturbo.com/Dome_Zero.htm
Striking looks, I still like wedge cars despite what I'm suppose to know about drag.
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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The Following User Says Thank You to kach22i For This Useful Post:
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07-11-2018, 04:32 AM
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#459 (permalink)
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Master EcoModder
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__________________
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
____________________
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.Three conspiracy theorists walk into a bar --You can't say that is a coincidence.
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07-11-2018, 02:21 PM
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#460 (permalink)
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Master EcoModder
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Quote:
Originally Posted by freebeard
This is similar to a boat I designed for myself in the 1990s. Except it was submersible and had a bow ramp like an
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A couple of days ago I was inside a very large mono-hull boat, built in 1968 being restored including the three Caterpillar diesels. This thing is literally as big as a barn as it takes up the whole barn and the superstructure ( flying bridge) isn't even on it. All it needs is the final coat of paint and some interior pieces.................anyway, it's tiny and claustrophobic inside despite the exterior dimensions.
That's why I like cats and that stealth car smuggler design so much, they are big on the inside too.
I'm a big fan of "surface effect ships" myself.
There are no high speed ferries from Chicago to coastal resort towns on Lake Michigan that I know of, if I won the lottery things would be different. Oh and it would carry automobiles of course.
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George
Architect, Artist and Designer of Objects
2012 Infiniti G37X Coupe
1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft
You cannot sell aerodynamics in a can............
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