Mailing List lml@lancaironline.net Message #48136
From: Jeffrey Liegner, MD <liegner@embarqmail.com>
Sender: <marv@lancaironline.net>
Subject: Re: Gap Seals and Aileron Force Required in Flight (LIVP)
Date: Sun, 27 Jul 2008 07:56:29 -0400
To: <lml@lancaironline.net>
I think every LIVP driver (and their pilot friends) have noticed the significant increase in roll force required to move the ailerons in fast cruise flight compared to on-the-ground.  The ailerons are very small compared to other control surfaces (ex, elevator deflection is easier and elicits a very fast response), and the airspeed over them exerts a significant resistence to deflection.  Fortunately, small aileron movement elicits a significant response, and so in-flight deflection is not like testing control movement on the ground.

Because my left arm tricep (roll left) is not as strong as my bicep (roll right), I sometimes augment the left roll input with my knee. Cheater.

I know nothing of gap seals.

Jeff L
LIVP


For Greyhawk:

Although my ailerons move freely on the ground, the  in-flight force required in my 4P is greater than I would hope for.  I was considering gap seals as a possible remedy.  Since I understand that you have installed gap seals on your machine, could we have your before and after experience with respect to aileron force and/or any other secrets you might like to share.

BTW, does any other L-IV have this problem?

Thanks, Bill Hogarty

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Ετ http://www.groundspeedrecords.com/records/record%20light%20Lancair%20IVP%20380kts.htm




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