Rudder Turbulator Strips

[GREEN, DOUG]

See

http://bvmjets.com/JetKits/bbanditrud-1.jpg

"The Aerodynamic Fix

Add the 1/8" plastic angle stock to both sides of the trailing edge of
the rudder. Use C.A. glue to adhere.

This is an aerodynamic fix commonly used on full size aircraft control
surfaces. It is also being employed on giant scale aerobatic models (as
flown in the T.O.C.) to solve some control surface buzzing."

Doug
 
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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