Re: Winglets on props?

From: <themaxout_at_aol.com>
Date: Mon, 24 Jan 2011 02:08:02 EST

I think I remember that the tip recurve was more for prevent tip
drag/vorticies
 
Rick Pangell
Editor of "The Max-Out" Newsletter of
The Magnificent Mountain Men FF Club of Colorado

 
In a message dated 1/23/2011 11:35:34 P.M. Mountain Standard Time,
bsanborn_at_purdue.edu writes:



In efficiency... The company only said that the propeller acted like a
prop with a diameter 2 inches greater. This is what we expect to see by adding
such wing tips; an apparent increase in span
based on the height of the tip.




Sorry for the two emails


Brett

Sent from my iPod

On Jan 23, 2011, at 9:02 PM, Brett Sanborn <_bsanborn_at_purdue.edu_
(mailto:bsanborn_at_purdue.edu) > wrote:





 
Eric,
 
I looked into this a bit before the world champs in an effort to gain an
edge on the competition. I asked a guy who was in a phd program for
aerodynamics and he thought that it could work but didn't have a real good reason
as to why. After that I did a quick lit review but found surprisingly
little information. When I was searching, however, I did see that a small
airplane company made a prop that had about a 2 inch tip on the end, at a right
angle like you're talking about. They didnt note an increase in efface


On Jan 23, 2011, at 8:47nc PM, "Eric" <_ewmonda_at_hotmail.com_
(mailto:ewmonda_at_hotmail.com) > wrote:





 
Has anyone experimented with adding a "winglet" to the tip of a prop?
Seems like it should be analagous to tip plates on the ends of our wings, but
I'm sure there is a reason I've never seen one.
Thanks,
Eric Monda
Received on Sun Jan 23 2011 - 23:08:23 CET