surfaces?
Rick Muller
SR70
On Wed, Oct 5, 2011 at 7:25 AM, Ted Waltman <ted@vafm.org> wrote:
--I added the h-stab struts recently (but I don't think they contributed to
this incident). I added Horiz-stab struts to dampen any h-stab vibration.
Thomas Thomas (Moose) did vibration analysis on his h-stab using
sophisticated telemetry equipment. Came up with struts on his Moose. I
don't have his same tail design so I attached mine in a slightly different
fashion. The h-stab struts are not under tension nor compression. They
are
there simply to dampen any vibration and change the natural
harmonic/resonant frequency of the h-stab.
Yes, that video (link in last email) is telling--doesn't matter what speed
if I understand anything at this point. I'm adding rudder weight and
rebalancing both rudder and elevator during reassembly.
Thank you for your note David. I'll post more information if/when I learn
new facts.
Ted
-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
David
A. Ricker
Sent: Tuesday, October 04, 2011 8:44 PM
To: rebel-builders@dcsol.com
Subject: Re: [rebel-builders] Moose Structural Failure ! Possible rudder
flutter (long post)
Ted
Those are a couple of eye opening photos! Really glad to hear you
arrived in one piece.
Looking at the photos I see a strut to the stabilizer, I was under the
impression that the Elite (our project) and the SR/Moose had the same
stabilizer layout, cantilever without braces, is the Moose modified from
the SR? I don't recall seeing braces on the MAM SRs I saw in Chilliwack.
I've looked at the Elite rudder and had the same skepticism about the
lack of balance weight. I'm not sure I buy the argument that the A/C is
too slow for balance considering our C-152 is balanced....
I'm looking forward to hearing more about the outcome of this since the
more I see of SR/Moose experience building up the more attention I pay
to the similar design elements in the Elite. Already we have the same
elevator and if I recall aileron hinge mount issues turning up.
Thanks for sharing and good luck with the return to service process.
Dave
www.Elite583.cjb.net <http://www.elite583.cjb.net/>
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
Rick Muller
Rick.H.Muller@gmail.com
303 641 6623
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
