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Re: Europa-List: Drag Reduction

Subject: Re: Europa-List: Drag Reduction
From: Michel Auvray <mau11@free.fr>
Date: Tue, 29 Nov 2005 18:00:20

Hello John;
I am inerested by your information concerning laminar flow.
What is your idea to reduce drag?

 bientt,
Michel Auvray builder 145, 270 hours fly with my Europa (monowheel) 

======= le 29/11/2005, 09:38:52 vous criviez: =======

>
>In a message dated 11/29/2005 2:58:14 AM Eastern Standard Time, 
>europa-list-digest@matronics.com writes:
>
>
>> So get rid of much of that drag; it need be only relative to
>> a big, even faired bump on the fuselage bottom, and stowed
>> outriggers but in a place where some wing lift suffers.
>> Like laminar flow wheel pants, if one has a way to trust the
>> fairing mfr's sales literature.  With laminer flow, fairing
>> drag goes down something like 60%.
>> 
>> I've seen a dozen or so flying Europas now and I've been very surprised that

>> no one I've seen is installing flap gap seals and positive seals on the 
>> ailerons, rudder and trim tabs. Stopping the pressure equalization between 
>> the

>> upper and lower surfaces of the wings and stab, plus the left and right side
of 
>> the rudder has been shown to significantly improve sailplane performance. 
>> It's puzzling to me that more Europaphiles aren't using these techniques.
>> 
>> On another note, my Sensenich hollow carbon prop arrived yesterday. All I 
>> can say is "WOW". The quality is excellent! I'll let everybody know what it

>> weighs shortly.
>> 
>> Regards,
>> 
>> John Lawton
>> Dunlap, TN
>> A-245 (Installing the prop today....)
>
>

= = = = = = = = = ========= = = = = = = = = =                         
Michel Auvray
mau11@free.fr
29/11/2005



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