On 6/2/04 2:51 PM, "Steve Brooks" <steve@tsisp.com> wrote:

Bulent,

Thanks.  I hadn't even considered that.  I have a hershey kiss sipper and flow guide on it, which I think will minimize it somewhat, but that is a possibility.

I haven't yet added any vortex generators in front of the NACA, and I checked with john to see if he had, and if he had any photos.  He sent me a link of Eric Weslland who had done the testing of putting vortex generator on the belly.  Here is a link for the write up on it, if you're interested http://home1.gte.net/res08ahw/vg/cooling.doc.

I'm going to give this a try first.  If I even saw half of the results that he saw, I'd be happy.  I thought that it was very interesting that a 160 MPH, he saw only 50 MPH air at the NACA inlet.  He had to move the air speed indicator inlet about 2" away before he saw his actual airspeed.  With just 2 - 1" X 4" vortex generators located just behind the landing brake, he saw actual airspeed at the NACA inlet.  That is a significant difference.

John said that he had them on from day one, so I don't have any idea what difference it will make until I try it



 

John, has other things going for him. (he listens to me :) ) His exhaust generates suction by augmentation. His radiator is huge (not my idea).
He has two oil coolers (not my idea). Also John have not explored the full power on a hot day parameters yet? I rely hope it works well.
My untested custom cowling has a P-51 type inlet plus the augmentation. I have filled my NACA scoop.


--
Bulent Aliev
Stretched CZ MK-IV W/Turbo Rotary
Ft Lauderdale, FL FXE
http://home.bellsouth.net/p/PWP-MyPlane