Random Wind Tunnel and Smoke Pictures Thread

[aerohead]

Originally Posted by freebeard

http://jalopnik.com/mugen-honda-civic-type-r-this-jdm-civic-is-the-best-ci-1753303486

Not a windtunnel picture, but unless they're blowing smoke (heh) I think it's still instructive. The front air curtains are minimal, is that all it takes?

they better trailer that one to the track.I don't think it would survive the commute.

[kach22i]

Honed in the wind tunnel
https://engineered.thyssenkrupp.com/...e-wind-tunnel/
<iframe width="560" height="315" src="https://www.youtube.com/embed/s_s-AEI4SDQ" frameborder="0" allowfullscreen></iframe>

Optimizing aerodynamics with wind and smoke: The solar sports coupé “thyssenkrupp SunRiser” undergoes wind tunnel testing.

Same thing on Youtube:

https://www.youtube.com/watch?v=s_s-AEI4SDQ

https://engineered.thyssenkrupp.com/...e-wind-tunnel/

[kach22i]

A High Speed Aerodynamic Paradigm
By John Gilkison and Philip Knox
A High Speed Aerodynamic Paradigm - EVWORLD.COM

Photo of a Don Burr truck outline as designed for the European market. This truck is still too high and lacks the proper length to form a boat tail to get the 0.13 CD shape needed for our high speed 90 MPH rural interstate highway paradigm.

[redneck]

.

1980 Volkswagen ARVW





Video with it in the wind tunnel.

https://www.youtube.com/watch?v=7CIldmiysqg

>

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[kach22i]

Cartoon Bat & Bat to help illustrate air flow.

Porsche


I think the bat should have been shown as sucked under the roof wing via venturi effect, then gliding down the rear windshield and flying either above or below the rear wing.

Also some of that bat's tail would have been sucked into the 911's engine bay from the powerful fan.

[kach22i]

JANUARY 21, 2016
Porsche Development Centre: The Features of the New Wind Tunnel
Porsche Development Centre: The Features of the New Wind Tunnel - Carrrs Auto Portal

Porsche wind tunnel, Weissach, 2015 © Dr. Ing. h.c. F. Porsche AG

[kach22i]

Intake Air: Does Velocity Choke It? - Pelican Parts Technical BBS

Note: discussion says engine not running.

[freebeard]

Porsche has an integrated alternator/fan. They could remove the fan belt and reverse the electrical connection to drive it. VW mechanics use to do that to cool the motor down for a valve adjustment. Cooling air volume is equal to or greater than combustion air volume.

[kach22i]

Originally Posted by freebeard

Porsche has an integrated alternator/fan. They could remove the fan belt and reverse the electrical connection to drive it. VW mechanics use to do that to cool the motor down for a valve adjustment. Cooling air volume is equal to or greater than combustion air volume.

This has been explored, consensus is that the unique demands of an air-cooled car make it impractical. It would take the battery pack and electric motor of a 2000 Honda Insight just to cool the Porsche engine (not good weight and expense wise).

Cooling fan HP - Pelican Parts Technical BBS

Feeler: Electric fan - Pelican Parts Technical BBS

I have changed out my alternator before, for once I was glad I had small hands.

Alternator Ground Strap - Pelican Parts Technical BBS

Originally Posted by kach22i

By far the coolest part of the whole assembly is the back cone.

Similar assembly:
911SC Turbo - Page 3 - Pelican Parts Technical BBS

[freebeard]

Different performance regime, I guess.

The back cone is an interesting part. It looks like it would need a chin strap to wear one as a hat!

Technically tuft testing, but I'll put this here.


http://justacarguy.blogspot.com/2016/02/putting-your-body-in-harms-way-for.html