[NSRCA-discussion] FAT Rudder

[J N Hiller]

Hi Rex, that caught my eye right away, in-flight thrust adjustment.
Mount the motor on a flexible rubber sheet donut shaped disk and move the
rear of the motor with two servos (V&H axis), mixing as needed. Maybe clamp
onto the front housing behind the drive washer. Might have to run a 4+"
spinner.
Since I'm in the middle of designing a new airframe anyway I will ruff out a
drawing and bring it to Creswell.
When I get the header for the 1.60 I was going to breadboard the power
system for a backyard run-up to get an idea what the tune length would need
to be. Maybe I could check out some thrust vectoring ideas with the same
set-up. Might not happen until I get back from the Scale Masters though.
Jim

-----Original Message-----
From: nsrca-discussion-bounces at lists.nsrca.org
[mailto:nsrca-discussion-bounces at lists.nsrca.org]On Behalf Of Rex
Sent: Sunday, August 23, 2009 10:07 AM
To: NSRCA-discussion
Subject: Re: [NSRCA-discussion] FAT Rudder

Here's a link to Chad's blog.  He talked to Bernd Bernshorner about his
motor offset...  there's a short
blurb about it....

http://www.chadnortheast.ca/

Rex

  _____


Date: Sun, 23 Aug 2009 12:00:19 -0400
To: nsrca-discussion at lists.nsrca.org
From: chuenkan at comcast.net
Subject: Re: [NSRCA-discussion] FAT Rudder

Yes, (del aleman = of the some country I think, maybe German[y]) Gunther
Ulsamer  has a carbon fiber strip to reduce turbulence, and something about
laminar flow.

Yes, definitely thrust-vectoring on the Plettenberg motor -- looks like
there are 7 positions or steps to the vectoring.  I'd bet that really helps
in a cross-wind!!!

Also, I didn't notice the deflectors at the bottom of the fuse -- I guess
that will counter any roll-coupling effect from the top ones.  I'd love to
see an assessment of what they do and how well...

All just further proof that aerobatics competition breeds innovation! :-$

At 11:30 AM 8/23/2009, you wrote:



There were deflectors at the bottom of the rudder too.  Looks he is using
vector thrusting on the motor too. Something in there too about a tubulator
on the wing or stab.... me Portuguese ezz no very goot either.

Wayne Galligan

From: Phil Spelt <mailto:chuenkan at comcast.net>
To: General pattern discussion <mailto:nsrca-discussion at lists.nsrca.org>
Sent: Sunday, August 23, 2009 10:45 AM
Subject: Re: [NSRCA-discussion] FAT Rudder
My Portugese is not good at all, but I believe the message says it is
Austrian Mayr Gehards, and something about an innovative (????something)
small deflector on the upper part of the vertical stabilizer...Anyone have
any idea what they are supposed to do -- what's the benefit, other than
increased tail-feather drag???  Does it direct more airflow over the Rudder
at the top?  Seems to me that they might add more roll-coupling, what with
the increased effect at the TOP of the rudder...
At 09:38 AM 8/23/2009, you wrote:



Check out the rudder on the plane part way down this page,,,,,  Gehards from
the WC I beleive.....

http://www.acro3d.com/public/phpbb3/viewtopic.php?f=19&t=4597&start=105
<http://www.acro3d.com/public/phpbb3/viewtopic.php?f=19&t=4597&start=105>
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--> There are only two types of aircraft -- fighters and targets.
Phil Spelt, Webmaster & Past President, Knox County Radio Control Society,
Inc.
       URL: http://www.kcrctn.com <http://www.kcrctn.com/>
AMA--1294,  Scientific Leader Member, SPA--177
      My URL: http://mywebpages.comcast.net/~chuenkan/
      (865) 435-1476 v  (865) 604-0541 c
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NSRCA-discussion mailing list
NSRCA-discussion at lists.nsrca.org
http://lists.nsrca.org/mailman/listinfo/nsrca-discussion
--> There are only two types of aircraft -- fighters and targets.

Phil Spelt, Webmaster & Past President, Knox County Radio Control Society,
Inc.
       URL: http://www.kcrctn.com
<http://www.kcrctn.com/> AMA--1294,  Scientific Leader Member, SPA--177
      My URL: http://mywebpages.comcast.net/~chuenkan/
      (865) 435-1476 v  (865) 604-0541 c
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