Vortex Generators / Hmmm Airtabs

[zpiloto]

Originally Posted by katman

Then I could add a Ram Implosion Wing!

Do you know anybody that tested that thing. It looks pretty hokie. It would be the ultimate whale tail. http://www.electrifyingtimes.com/Rob...Patterson.html

[ZugyNA]

I've studied the vg thing and have installed some.

I'd have to guess that the ones on the roof are in an area where the boundary layer has already separated to some extent....probably reducing their effectiveness. Maybe try moving them forward about a foot?

The ones on the deck lid are at a place where the air has pretty much separated for sure from the sharp drop at the window.

I had some on the roof of a hatchback with less slope...slightly different design of vg though...similar to the Mitsubishi kind. Found that silicone caulk is best for permanent mounting.

Good to see the accurate testing....and some positive results.


Here is a similar car with similar flows:

http://www.mitsubishi-motors.com/cor...004/16E_03.pdf


vgs:

http://www.thirdshift.com/jack/firefly/firefly18.html

http://www.thirdshift.com/jack/firefly/firefly19a.html

Notice that he has his version of vg mounted the other direction? This plane cruises at around 60 mph.

[zpiloto]

Originally Posted by ZugyNA

I've studied the vg thing and have installed some.

I'd have to guess that the ones on the roof are in an area where the boundary layer has already separated to some extent....probably reducing their effectiveness. Maybe try moving them forward about a foot?

The ones on the deck lid are at a place where the air has pretty much separated for sure from the sharp drop at the window.

I had some on the roof of a hatchback with less slope...slightly different design of vg though...similar to the Mitsubishi kind. Found that silicone caulk is best for permanent mounting.

Good to see the accurate testing....and some positive results.


Here is a similar car with similar flows:

http://www.mitsubishi-motors.com/cor...004/16E_03.pdf


vgs:

http://www.thirdshift.com/jack/firefly/firefly18.html

http://www.thirdshift.com/jack/firefly/firefly19a.html

Notice that he has his version of vg mounted the other direction? This plane cruises at around 60 mph.

Your right about the direction. I don't know how I screwed that up. I'll have to swing them around and retest. Mybe this weekend. I was disappointed with the original results. Maybe this will get it around 3%.