REFLECTOR:Experimental:Lower Winglets

Jack Hayes reflector@tvbf.org
Tue, 27 Jan 2004 12:44:59 -0500


Scott,
         any words of wisdom for the standard wing?
----- Original Message -----
From: "Scott Baker" <sbakr@comcast.net>
To: <reflector@tvbf.org>
Sent: Tuesday, January 27, 2004 12:27 PM
Subject: Re: REFLECTOR:Experimental:Lower Winglets


> Kurt -
> Just wanted to share that the factory did some experimenting with the size
> of the lower winglets on the XL wing.  We found 5" to be the "magic"
number.
> We started out with a 2" lower winglet and then kept adding more length
> during successive trial runs.  The response and "feel" of the aircraft got
> better and better until we reached 5" - after which more lower winglet
> didn't add much of an improvement.
> Scott B.
>
> ----- Original Message -----
> From: <NMFlyer1@aol.com>
> To: <reflector@tvbf.org>
> Sent: Tuesday, January 27, 2004 10:19 AM
> Subject: REFLECTOR:Experimental:Lower Winglets
>
>
> > I love reading all the different theories and ideas that people have,
> makes me feel slightly less odd.
> >
> > I have the 173 FGE. Since Canards are such runway hogs, and high density
> altitude is a factor here, I made quite a few "adjustments" to my V.
> >
> > Canard:  No elevator cuffs, and factory VG's.
> >
> > Winglets (tipsails): Lower winglets are 2" instead of the full size, to
> keep spanwise flow from sliding off the edge of the wing. As a bonus, they
> look a whole lot better than the full size lowers.
> > I also made my rudders full length. This just happens to make the rudder
> the same size as if I had full lower winglets.
> >
> > Wings: I will use the vortilons, and possibly the fences, we shall see.
> >
> > PowerPlant:  340HP Aluminum V-6 Chevy, 76" 3 blade CS Prop.
> >
> > Derated by density altitude, I should still have tons of power for
takeoff
> around here.
> >
> > The whole goal was to be able to depart my home (5000' before DA takes
> effect), from a 5000' runway. Any possible speed increase will just be a
> bonus!
> >
> > This is all still theory since I am not flying yet, but the test should
> come this summer. If I would have followed the directions, I would have
been
> done a couple years ago..... but may not have been able to fly on a hot
day
> out here. We shall see.
> >
> > Kurt Winker.
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>
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