Sender: rob
Message-ID: <3DDAA85D.ABC681CA@Philips.com>
Date: Tue, 19 Nov 2002 16:08:45 -0500
From: Rob Logan <Rob.Logan@Philips.com>
Reply-To: Rob@CT.Picker.com
MIME-Version: 1.0
To: lml@lancair.net
Subject: Re: .... Wing Airfoil [stall strips ; LE tape]
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> bug buildup on [Martin Hollmann's blended 64212 airfoil ; 
> 30% laminar flow on top and 70% laminar flow] resulted in 
> an increased stall speed of about 15 knots.

I'm confused, if vortex generators make a turbulent layer
that stays attached to the wing longer, there by *lowering*
ones stall speed, how is the above true?

I do know the slightest frost on the leading edge of a LNC4 
results in 7kts loss of cruse speed and very thin electric 
ice boots [or LE tape] eats 5kts on the same plane. Having 
never flown without at least one of the above, I had always
assumed my stalls were lower than a clean wing.

I'm confused..

-- 
Utopian Maturity: Eternity, Liberty, Equality and now Fraternity & Altruism.