Random Aerodynamic Oddity of the Day Thread

[kach22i]

New stuff I added to the Dempsey Motorsports Garage (formerly the Pelican Garage) - Page 2 - Pelican Parts Forums

...cardboard display from the 1980s that was a liquor store display...

[freebeard]

Here's a display at Hutch's Bicycle Shop in Bleugene, OR.



Cedar dugout, following native traditions.

[Charlie Cheap]

Front part tapers to an edge to help the rudder be more effective. SWAG...... scientific wild ass guess.

[aerohead]

Originally Posted by freebeard

http://justacarguy.blogspot.com/2018...with-this.html

Boxed cavity on a Porsche 356.

This is reminiscent of Carl Breer's and the Three Musketeer's, 1934 Chrysler, DeSoto Airflow aero mule, which ended up at Cd 0.244, compared to Cd 0.51 for the OEM car.

[aerohead]

Originally Posted by freebeard

Here's a display at Hutch's Bicycle Shop in Bleugene, OR.



Cedar dugout, following native traditions.

Nice example of a 'square-to-round' duct transition in the background.

[freebeard]

When I was in college in Mechanical Engineering (four terms) we learned how to lay out transitions with a pencil and paper.

Today, in Blender, you just push a button that says U-V Unwrap.

[kach22i]

84-89 3.2L upgraded to 3.5L with 267 Wheel HP! - Pelican Parts Forums


With tray off, looks to be full carbon fiber belly pan to the front.

84-89 3.2L upgraded to 3.5L with 267 Wheel HP! - Pelican Parts Forums


Keep in mind this is an air-cooled Porsche, air comes in from the rear deck-lid sucked into a fan with a fiberglass shroud that covers the top of the engine bay, flows past the finned cylinder heads and usually exits out the bottom.

I believe the holes in the rear corners of the bumper is where the air now exits plus a slot at the upper license plate area, and at quite some pressure I assume.

Odd.

[freebeard]

Search fails, but I saw an old black-and-white picture of a Porsche race car that had the engine cooling driven by the exhaust through a plenum behind each rear wheel. Would that be Venturi effect?

OTOH I did find this picture of the Emory's Darth Vader Porsche:



I wish they were still in Eola Village at Amity, OR. Good times.


https://www.pca.org/sites/default/fi...Sweetman-5.jpg

[cRiPpLe_rOoStEr]

Originally Posted by aerohead

This is reminiscent of Carl Breer's and the Three Musketeer's, 1934 Chrysler, DeSoto Airflow aero mule, which ended up at Cd 0.244, compared to Cd 0.51 for the OEM car.

Even though that might have some reasoning, it's hard to assimilate any drastic change to the design of a Porsche 356. They're too beautiful when stock.

[aerohead]

I agree. I came close to purchasing one three different times. I only got as far as a Karmann Ghia. My middle brother ended up with a 356 while I was in college, so I got to spend some seat time in one finally. Sure liked it.
912, 914, 911T, 911S, 911 Turbo................... enjoyed them all!