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Old 12-04-2012, 02:55 PM   #11 (permalink)
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Quote:
Originally Posted by Shepherd777
But I don't know why he puts such a square 1940-2012 type truck in his wonderful wind tunnel.
To prove a point?

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Old 12-04-2012, 06:47 PM   #12 (permalink)
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racing

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Originally Posted by Cd View Post
Hey He has some new stuff up !

Thanks for the tip Aerohead !

The link :Aerodynamik mit Wolf-Heinrich Hucho

Some examples here :

This photo illustrates how a car would do good in qualifying,then crash during the race,when the other cars 'take' their air,rendering down-force devices highly compromised!
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Old 12-04-2012, 06:54 PM   #13 (permalink)
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Jaray

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Originally Posted by NeilBlanchard View Post
The left side a) is quite similar to the ideal template we have been working with:



Though the apex is farther back. The Jaray concept bugs me - it seems to be 2D thinking trying to be 3D? The sharp corner at the intersection between the shapes would add drag, by definition, and it requires two distinct "expansions" of the air, which seems less than ideal.
Jaray's form is pure 3-D.It's the original 'pumpkin seed.'
It's a little 'fast',but was one of the inspirations for the 'Template.'
GOOGLE has a photo of the original model as tested by Wolfgang Klemperer in the Zeppelin tunnel in 1922.
If you look at the work of Lay,Koenig-Fachsenfeld,Kamm,and others,you can see how they all leaned on Jaray.
Hucho call this form the Father of all streamlined cars of its day.
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Old 12-04-2012, 06:57 PM   #14 (permalink)
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why

Quote:
Originally Posted by Shepherd777 View Post
He is obviously a very smart man. But I don't know why he puts such a square 1940-2012 type truck in his wonderful wind tunnel. Almost barn-door flat in front, Ill-fitting roof fairing, too small, too low, to far rearward. Non-aero mirrors. No side skirts. No rear of truck aero device. Everyone here knows such a vehicle would produce the tremendous tornadic vortices of smoke in the rear of the vehicle that we see in this image. What's the point?

Why not use this wonderful tool he has to improve the machine?

I would be glad to ship him our 2015 Concept Vehicle 3D Printed model to test, if I was sure it wouldn't be rubble after the 7500 mile round trip.

I think he's using 1/18th-scale models which happen to available.And we have no idea what he's NOT showing us.
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Old 12-04-2012, 07:18 PM   #15 (permalink)
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Quote:
Originally Posted by aerohead
If you look at the work of Lay,Koenig-Fachsenfeld,Kamm,and others,you can see how they all leaned on Jaray.
Hucho call this form the Father of all streamlined cars of its day.

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Old 12-15-2012, 12:36 PM   #16 (permalink)
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That truck in the tunnel is a Finnish EMEK EMEK-Muovi Oy

Those models are manufactured from 3d data which have been got from OEMs. So they are very accurate. He is working to lot of companies as you can see from the references...
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Old 12-16-2012, 02:42 AM   #17 (permalink)
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Quote:
Originally Posted by Sepherd777
I would be glad to ship him our 2015 Concept Vehicle 3D Printed model to test, if I was sure it wouldn't be rubble after the 7500 mile round trip.
Or you could ... you know ... send the file and have a copy printed at the destination?

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