[NSRCA-discussion] Paysant-Le Roux's Oxalyis using a winglet aft of canopy???

[Park, Ihncheol]

Chad,
Any idea why there is a negative incidence on it?
I will try to build one to use on my Beat On to see if it helps on rudder
related belly pitching.
Maybe on that Kyosho Oxalys 50 also?

Ihncheol Park

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org] On Behalf Of Chad
Northeast
Sent: Wednesday, May 24, 2006 10:41 PM
To: NSRCA Mailing List
Subject: Re: [NSRCA-discussion] Paysant-Le Roux's Oxalyis using a winglet
aft of canopy???

I have built and flown one....I also spoke directly to CPLR about its
function.  Its primary function is to improve rudder effectiveness by
cleaning up the slipstream around the fuse, secondly it helps to reduce the
amount of pitch to the belly during level flight rudder application, so
improving things like rolling circles.  Does it work?  Its very subtle...but
you can tell some differences....is it better?  I dont know, but every time
I took it off my Enigma I didnt like the way the plane flew afterwards.  It
did certainly remove my pitch mixing in knife edge (5% both ways).....and I
think it did help with rollers.  It also forced a thrust line change for
vertical climbs.

Anyways, its a 200mm span, 100mm at the root, 60mm at the tip, straight TE,
naca 0010 profile, and set 0.5 deg negative relative to the stab.  
The LE of the small wing sits slightly ahead of the TE of the big wing if I
remember right.

Dead simple to make (takes 1 evening)....try it out, toss it if you hate it,
keep it if you dont :)

Chad

Jim Stovall wrote:

> Sorry if this has already been discussed but,
>  
> I was reading the latest issue of  Model Aviation this evening and saw 
> a picture of Christophe PAysant-LeRoux's Oxyalis with a "winglet"
> mounted aft of of the canopy. What is the function of this winglet? 
> Has anyone on this list used this? Thanks..........
>
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