Message-ID: <374C16BC.E391C101@mc.net>
Date: Wed, 26 May 1999 10:43:56 -0500
From: jerry@mc.net
Reply-To: jerry@mc.net
To: lancair.list@olsusa.com, RicArgente@cs.com
Subject: Re: Aileron Vibration
References: <80a61c4e.247d34d6@cs.com>
Mime-Version: 1.0

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For Rick Argente

I just looked at my builder's manual, Rick.  Please look at the cross
section of the aileron with the curved forward edge where the  lead counter
weight is attached.  Now visualize, for a moment, the lead weight ever so
slightly bending this curved section as the aileron rapidly oscillates at
the "balance" point.  Now think for a moment.....if this curved section
bends it gets longer...... then the natural "spring" action in this section
returns the curve to a "near normal" nonbent point as the slipstream tries
to fair the aileron.  I say "near normal" because the return probably over
shoots the static balance point causing an under balanced condition for
milli seconds.  My mind's computer says this causes the aileron to be in and
out of balance with a cycle too fast to count.

I believe the bending action is what is causing an intermittent out of
balance condition by only a few grams of weight because the length of curved
moment arm is changing by a few thousandths of an inch, both longer and
shorter, in a cycle.

If these thoughts are on ....the corrective fix is pretty obvious to me.

Comments from other readers, please.

Jerry Grimmonpre'     L320

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