FW: Rudder Tubulator Strips

[PENNISI Peter]

I have been using a form of rudder tubulator on my current F3A model for
the past 6 months. I believe certain flight characteristics have been
improved with this model as it has a very blunt front-end. I find it
sits better in the wind as it seems to have dampened the tail end from
wiggling in
flight. I have also found it much easier to pull straight verticals
especially when the wind is blowing.

All I did was CA some 3mm plastic angle to the TE of the rudder. (Both
sides of course).

It is worth trying if your model does not "lock on" in the wind.


Here are some pictures of my setup.

 
http://www.qpfa.org.au/rudder%20turb.htm


Peter


-----Original Message-----
From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]
On Behalf Of Koenig, Tom
Sent: Thursday, 17 April 2003 07:55 AM
To: 'discussion at nsrca.org'
Subject: RE: Rudder Turbulator Strips



He now also builds professionally since he retired from the Army..and
for those that know him... and while at comps,we still need to "switch
him off" at bed time <VBG>

Tom

-----Original Message-----
From: John Gayer [mailto:jgghome at earthlink.net]
Sent: Wednesday, 16 April 2003 2:02 PM
To: discussion at nsrca.org
Subject: Re: Rudder Turbulator Strips


I might add that John Payne is missing most of his right arm. He builds 
his own airplanes.  It's an amazing sight to watch him replace bearings 
in a YS....

John Gayer

Dean Pappas wrote:
> Hi,
> That was John Payne's Cyclone. The kit is available from CD Products.
> If you have a separation bubble on both sides of the rudder, then 
> doing
what was described can improve rudder "lock" and possibly kill some
flutter. Of course, what you really should do is build a thicker rudder.
John claimed the idea came from Wolfgang Matt, or his captive
aerodynamicist. (same guy responsible for the Rubin wingtips.
> Dean
> 
> -----Original Message-----
> From: Woodward James R Civ 412 TW/DRP (Test Ops)
> [mailto:James.Woodward2 at edwards.af.mil]
> Sent: Tuesday, April 15, 2003 10:52 AM
> To: discussion at nsrca.org
> Subject: RE: Rudder Turbulator Strips
> 
> 
> I thought I read about 2 years ago that J.S. put a split piece of fuel
> tubing on the TE of his 33 or 40% fiberclassics airplane's rudder to 
> get
rid
> of a tail shake or something like that?
> 
> Jim Woodward
> 
> 
> -----Original Message-----
> From: Ron Lockhart [mailto:ronlock at comcast.net]
> Sent: Tuesday, April 15, 2003 7:41 AM
> To: discussion at nsrca.org
> Subject: Re: Rudder Turbulator Strips
> 
> Hi Wojtek,
> 
> Not "turbulator strips" as such, but:
> I saw a rudder on an Austrailian 2 meter bird at the
> NATS years ago with a very thick trailing edge.
> The pilot (I don't recall his name) said it provided
> better response at low speed- such as stall turns.
> I suppose you could tape a triangle about 1/2" wide,
> 1/8" thick to each side of rudder to create a 
> trailing edge about 1/4 to 3/8" thick to try it.
> If you do, let us know results.
> 
> Later, Ron Lockhart
> 
> ----- Original Message -----
> From: "Tomanek, Wojtek" <tomanekw at saic-abingdon.com>
> Date: Tuesday, April 15, 2003 9:20 am
> Subject: Rudder Turbulator Strips
> 
> 
>>On the IMAC list there was some discussion about using turbulator 
>>strips on both sides of the rudder's trailing edge.  Actually, I do 
>>remember seeingsome on large IMAC planes.  I was wondering if any one 
>>tried this on a 2M
>>plane and what were the results??
>>
>>TIA
>>Wojtek
> 
> 
> 
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