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Old 05-27-2017, 01:12 PM   #641 (permalink)
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Originally Posted by kach22i View Post
the race version of this car has been reported at Cd 0.25.

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Old 05-27-2017, 01:16 PM   #642 (permalink)
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Re 5,000

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Originally Posted by Fingie View Post


ran a flow simulation on my russian box.

the car is aerodynamic, but it seems it could use some improvement.
The simulation would need to exceed Re 500,000 to get towards a supercritical Reynolds number and constant drag coefficient.
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Old 06-13-2017, 09:40 AM   #643 (permalink)
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TechArt - Rear Spoiler 1 - 991 carrera

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Wind tunnel prototyping and development
*
Just like every genuine TECHART product, each part of the TECHART Aerokits has to undergo hard and demanding test procedures during its development process. In terms of aerodynamic components, wind tunnel testing is crucial for both, optimum driving performance and highest active safety.
http://www.porschetuningmag.com/tech...e_wind_tunnel/
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Last edited by kach22i; 06-13-2017 at 08:46 PM..
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Old 06-13-2017, 08:26 PM   #644 (permalink)
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VWVortex.com - Rear roof spoiler - has anyone seen any of these?


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Old 06-13-2017, 08:28 PM   #645 (permalink)
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Bodies immersed in fluids – Car in wind tunnel
Bodies immersed in fluids – Car in wind tunnel | IAHR Media Library

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Source Unknown. Courtesy of Dr Marian Muste, IIHR - Hydroscience & Engineering, University of Iowa.
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Old 06-13-2017, 08:32 PM   #646 (permalink)
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The „large wind tunnel“ in Untertürkheim
The "large wind tunnel" in Untertürkheim - Mercedes-Benz Passion eBlog

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The „K-Wagen“ developed by Kamm between 1938 and 1941 was the prototype for an aerodynamically innovative passenger car. And the name „Kamm rear“ is still used today to describe the sharp spoiler lip at the tail end. Because of the war, it was not until 1954 that the wind tunnel became the first in the world to be used for measurements on original-size passenger cars. Since then, it has played a key role in developing the aerodynamic efficiency of the car – especially models bearing the Mercedes star.
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Old 06-13-2017, 08:37 PM   #647 (permalink)
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The "large wind tunnel" in Untertürkheim - Mercedes-Benz Passion eBlog







Search term: The „large wind tunnel“ in Untertürkheim using Bing image search.
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Chin Spoiler:
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Rear Spoiler Pick Up Truck
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Old 06-13-2017, 08:39 PM   #648 (permalink)
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The wind tunnel in Untertürkheim | mercedesclass.net




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Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
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Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
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Old 06-13-2017, 08:40 PM   #649 (permalink)
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Historic Mercedes-Benz W194 Measured in Wind Tunnel

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The most important results: the 300 SL (W 194 series) racing car has a drag coefficient cD = 0.376. It is thus around 20 per cent better – that is, considerably better – than its contemporary comparison vehicle, the 300 S (W 188 series), for which a value of cD = 0.462 was obtained. This result underscores the efforts of the engineers and designers back then to attain a low drag coefficient as an important prerequisite for the SL’s racing success – which the car then went on to achieve in the course of the 1952 racing season at different international motorsport events, for example at Le Mans or in the Carrera Panamericana in Mexico. The 300 SL (W 198 I) series-production sports car returned a drag coefficient value of cD = 0.389.
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1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
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Old 06-13-2017, 08:45 PM   #650 (permalink)
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Mercedes-Benz Aero Accomplishments | CleanMPG

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George
Architect, Artist and Designer of Objects

1977 Porsche 911s Targa
1998 Chevy S-10 Pick-Up truck
1989 Scat II HP Hovercraft

Chin Spoiler:
http://forums.pelicanparts.com/off-t...effective.html

Rear Spoiler Pick Up Truck
http://forums.pelicanparts.com/off-t...xperiment.html

Roof Wing
http://ecomodder.com/forum/showthrea...1-a-19525.html
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