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Date: Fri, 13 Jul 2012 20:02:40 -0400
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Subject: Flutter/VNE
From: Dennis Ramsey <doramsey@gmail.com>
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So if VNE is an indicated airspeed (which it clearly is), then is it safe
to assume that one would have flutter margins if a IV was in a descent
from  FL 290 and was indicating 276 knots as it passed through FL250.  I
think everyone agrees that flutter is a function of TAS.  So what we really
need to know is what TAS that flutter should be expected on the various
Lancair airframes.  If you cannot get into a flutter situation all on the
models if you stay below VNE at the service ceiling, then its a moot point
and all we need to know is VNE.   But if trouble can begin at speeds below
VNE at high altitudes, then we really need to know the flutter TAS for the
models.

Dennis Ramsey
Lancair IV
65 hours

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<div>So if VNE is an indicated airspeed (which it clearly is), then is it s=
afe to assume that one would have flutter margins if a IV was in a descent =
from=A0 FL 290 and was indicating 276 knots as it passed through FL250.=A0=
=A0I think everyone agrees that flutter is a function of TAS.=A0 So what we=
 really need to know is what TAS that flutter should be expected on the var=
ious Lancair airframes.=A0=A0If you cannot get into a flutter situation all=
 on the models if you stay below VNE at the service ceiling, then its a moo=
t point and all we need to know is VNE.=A0=A0 But if trouble can begin at s=
peeds below VNE at high altitudes, then we really need to know the flutter =
TAS for the models.</div>
<div>=A0</div><div>Dennis Ramsey</div><div>Lancair IV=A0 </div><div>65 hour=
s</div>

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