Alan,
I noted no answer to your question on what is flutter.
Attached are some video sites for you to look at. In engineering,
vibration and aeroelastic concerns on fatique and flutter are very
serious studies.
Please review:
<http://www.aircraftdesigns.com/aircraft-flutter-analysis.html>http://www
.aircraftdesigns.com/aircraft-flutter-analysis.html<http://www.aircraftde
signs.com/aircraft-flutter-analysis.html>
http://www.youtube.com/watch?v=YIHam_isyI8&feature=related
I became interested in the subject when government cuts forced us to go
to a cheaper hydraulic line in the F4. We were seeing numerous problems
with hydraulic failures using the aluminum lines attached. Without
hydraulic pressure, the flight controls did not lock in position in
certain failures (breaking of the control pack) and controls would begin
to buzz at high speed. Luckily the aircraft wing was brutally strong,
we had redundant hydraulic controls and with only one hydraulic failure
we pilots normally slowed down, declared an emergency and returned to
base without incident. One crew lost all hydraulic control on one wing
and the back seater could see the aileron flopping about. They slowed
to 240 knots and the flutter stopped but hinge and trailing edge damage
was evident in only a few seconds of flutter.
Later I was involved in a local Twin Commanche incident where rivets
were popped all over the stab and I was asked to look at it. See the
video below. The type of flutter is evident on stabilators as well as
conventional horizontal control surfaces which are not balanced.
http://www.youtube.com/watch?v=iTFZNrTYp3k<http://www.youtube.com/watch
?v=iTFZNrTYp3k>
----- Original Message -----
From: Alan Carter<mailto:alancarteresq@onetel.net>
To: europa-list@matronics.com<mailto:europa-list@matronics.com>
Sent: Monday, October 15, 2012 4:21 PM
Subject: Europa-List: Stabalator Flutter
<alancarteresq@onetel.net<mailto:alancarteresq@onetel.net>>
Hello ALL.
This question is nothing to do with how to fix the Toque Tube and stop
flutter.
Ok i know stabalators are more efficient than the elevator, and they
can,t Rime ice up like an elevator and i have flow many aircraft with
stabalators
and i don,t like them.
Question is what is Flutter only??
I keep hearing the word Stabalator Flutter, I have the obvious idea
as to what happens but would like to know more, maybe someone has
experienced it.
Do the Stabalators flutter independently, or both up and down
together,
How fast is this fluttering, How is the on-set noticed in the cockpit,
Can you feel it through the joy stick,( of course you can, but a tell
tell indication maybe in some flight attitude or configuration well
before an event). Is it controllable, What would be the position held by
the stabalators if you had no control. ete,ete,ete, agian not a test
just something we can all chew over.
If anyone has experienced flutter please tell us,
Alan
[/u]
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=385392#385392<http://forums
.matronics.com/viewtopic.php?p=385392#385392>
http://www.matronics.com/Navigator?Europa-List<http://www.matronics.com/N
avigator?Europa-List>
http://www.matronics.com/contribution<http://www.matronics.com/contributi
on>
|