Random Aerodynamic Oddity of the Day Thread

[kach22i]

Originally Posted by freebeard

Chris Runge is at it again:

I've posted those renderings in another forum a few days ago when I stumbled upon them by accident. I haven't see the video before, didn't realize he was trying to build it. Looks like a lot of work, I just jumped around the video a bit.

Every CFD image I've seen with stepped front wheel vents shows a lot of drag from the non-attachment area.

I wonder if that is really as large of a problem as it looks like.

[freebeard]

Not his first rodeo. He's built a number of cars, been on Jay Leno, etc.

Can you point to an example of a stepped front wheel vent?

[kach22i]

Originally Posted by freebeard

Can you point to an example of a stepped front wheel vent?

Yea, the R2 you just posted.

[freebeard]

Got it. Thanks.

[kach22i]

https://smarttruckaero.com/products-...truck-premier/

Benefit from a 16% reduction in drag and a
10% improvement in fuel mileage on a typical Class 8 truck
during normal, long-haul highway operations.

Looks to be the product of two-dimensional thinking, and I don't understand the "LeadEdge Top Fairing" either featured on the same page (bottom).



Could that front lip actually be creating a friendly frontal vortex?

If used in conjunction with a tractor cabin top fairing maybe it's just closing up the gap?

Video in link featuring what they call "topkit".

https://smarttruckaero.com/products-overview/top-kit/#

Link to "top gap" product.
https://smarttruckaero.com/products-overview/leadedge/

Simply managing this drag with our LeadEdge can add 2% to your fuel efficiency, either in combination with other SmartTruck aero systems or all by itself.

The rear bustle is interesting too.

https://www.tknw.com/smarttruck.htm

[freebeard]

I just watched Mission Stardust from 19xx. Lesson learned: don't trust Swedish nurses with bee-hive hairdos when they operate in pairs. The Moon mission had an excursion vehicle over-optimized for it's operating environment: Small (For three passengers) body of revolution with a long reflex tail for re-attachment, spoilt only by the open wheels. With the ever-necessary tail fin.


http://3.bp.blogspot.com/-fN28EHa3afQ/UQMQLC1DtuI/AAAAAAAACzU/vxfNGBtsEWM/s1600/perry+1.PNG

[kach22i]

Originally Posted by freebeard

I just watched Mission Stardust from 19xx. ..........

I saw that on Comet TV recently, thought it was interesting too.

2015
Barn Find Porsche 962-106b...
Barn Find Porsche 962-106b... - Page 6 - Pelican Parts Forums

[freebeard]

Mission Stardust is from a novel by Perry Rhodan. Hence the captain's name, and why it had an actual plot.

Here's everything that's not radiator mounts or the diverter:



As long as I'm in my albums, I should repost some from the book Voiture Minimum (1935)

[aerostealth]

https://youtu.be/I1osICl6d2U

For Phil Knox

[freebeard]

Needs a half-tonneau.


http://www.forgottenfiberglass.com