Today's Message Index:
----------------------
1. 06:53 AM - Fin attach (Frazier, Vincent A)
2. 07:41 AM - Re: Fin attach/rudder flutter (Boyd C. Braem)
3. 12:01 PM - Re: Fin attach/rudder flutter (Fouga434@aol.com)
4. 01:44 PM - Re: Fin attach/rudder flutter (Boyd C. Braem)
5. 01:59 PM - Fin attach (David.vonLinsowe)
Message 1
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--> Rocket-List message posted by: "Frazier, Vincent A" <VFrazier@usi.edu>
SNIP
Subject: Rocket-List: Fin attach
From: "David.vonLinsowe" <David.vonLinsowe@delphi.com>
--> Rocket-List message posted by: "David.vonLinsowe" <David.vonLinsowe@delphi.com>
I've heard that Rockets have an extra doubler as compared to a RV where
the front fin spar attaches. Is this true? If it's so, could someone
share some details?
Rudder counter balances... I've noticed some Rockets without them yet
Van has included them on all the new series of RV's. Are they needed
for flutter prevention?
Thanks,
Dave SNIP
http://www.usi.edu/science/chemistry/vfrazier/Everything%20else.htm
scroll about one third of the way down for a pic of how I changed my VS attach
to resemble the F-1 stuff.
I don't have a rudder counter balance.
Is any of this necessary? According to several HR drivers I've talked to.... No.
It's your choice then, isn't it?
Vince
Message 2
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| Subject: | Re: Fin attach/rudder flutter |
--> Rocket-List message posted by: "Boyd C. Braem" <bcbraem@comcast.net>
The Super 6 has the old style rudder with the 0.020 skins. The
calculated Vne with the airframe improvements is 293 mph. I've had it
over 300 mph in a dive (Vd), and since I'm typing this, there was no
destructive flutter.
Boyd.
Frazier, Vincent A wrote:
>--> Rocket-List message posted by: "Frazier, Vincent A" <VFrazier@usi.edu>
>
>
>SNIP
>Subject: Rocket-List: Fin attach
>From: "David.vonLinsowe" <David.vonLinsowe@delphi.com>
>
>--> Rocket-List message posted by: "David.vonLinsowe" <David.vonLinsowe@delphi.com>
>
>I've heard that Rockets have an extra doubler as compared to a RV where
>the front fin spar attaches. Is this true? If it's so, could someone
>share some details?
>
>Rudder counter balances... I've noticed some Rockets without them yet
>Van has included them on all the new series of RV's. Are they needed
>for flutter prevention?
>
>Thanks,
>Dave SNIP
>
>
>http://www.usi.edu/science/chemistry/vfrazier/Everything%20else.htm
>
>scroll about one third of the way down for a pic of how I changed my VS attach
to resemble the F-1 stuff.
>
>I don't have a rudder counter balance.
>
>Is any of this necessary? According to several HR drivers I've talked to....
No.
>
>It's your choice then, isn't it?
>
>Vince
>
>
>
>
Message 3
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| Subject: | Re: Fin attach/rudder flutter |
--> Rocket-List message posted by: Fouga434@aol.com
GEE WHAT HAPPENS WHEN YOU ARE GOING OVER 300 MPH IN A DIVE AND YOU DO GET
FLUTTER DO YOU GET A RE ENACTMENT OF THE COLUMBIA ONLY WITH OUT THE FIRE
BALL..... JUST THE CRUPPLED PLANE WITH A
SURPRISED EX TEST PILOT
Message 4
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| Subject: | Re: Fin attach/rudder flutter |
--> Rocket-List message posted by: "Boyd C. Braem" <bcbraem@comcast.net>
Well, the Super 6 has a unique airframe/engine combination and to
develop a Vn plot for the aircraft you have to fly it.. It's called
test flying. That's part of the process. If something would have
happened, the pilot (me) would have been, let's say "busy", not
necessarily "surprised", because your mindset has to be that you know
something could happen (they do have things called parachutes, helmets
with visors, steel toed boots, Nomex, etc.). But the 'plane was well
designed, engineered and built and nothing did happen taking it to the
edges of its envelope. But, yes, if you do get true flutter in a
control surface, the assumption is that it will destruct, which is why I
find it amusing that the aerodynamic guys call it flutter instead of
disingetrating, or kabooming or simply falling apart--I mean, flutter is
like a little gentle butterfly landing on your finger on a cool summer
morning.
do not archive
Fouga434@aol.com wrote:
>--> Rocket-List message posted by: Fouga434@aol.com
>
>GEE WHAT HAPPENS WHEN YOU ARE GOING OVER 300 MPH IN A DIVE AND YOU DO GET
>FLUTTER DO YOU GET A RE ENACTMENT OF THE COLUMBIA ONLY WITH OUT THE FIRE
>BALL..... JUST THE CRUPPLED PLANE WITH A
>SURPRISED EX TEST PILOT
>
>
>
>
Message 5
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--> Rocket-List message posted by: "David.vonLinsowe" <David.vonLinsowe@delphi.com>
Thanks Randy.
Dave
Time: 05:53:47 PM PST US
From: Randy Pflanzer <F1Rocket@comcast.net>
Subject: Re: Rocket-List: Fin attach
--> Rocket-List message posted by: Randy Pflanzer <F1Rocket@comcast.net>
You can go to http://mywebpages.comcast.net/f1rocket/ for detail
construction pictures of the area in question.
On the F1, the rudder counter balance is mandatory.
Randy
F1 Rocket #95
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