Graham 1 aerofoil47in

Hi Guys
I found a couple of files which just might give you accurate wing sections, One
is a *.dwg (Auto cad I think) the other a *.dxf. drawing exchange file. I no
longer have the software to open these so would someone try and let me know if
it works?

The last one should give a 47" print out onto several sheets
Graham


________________________________
From: Christoph Both <christoph.both@acadiau.ca>
To: "europa-list@matronics.com" <europa-list@matronics.com>
Sent: Tuesday, 17 August, 2010 13:24:07
Subject: RE: Europa-List: Stall spin characteristics


Hello,
Where would one find the digital collection of the profile?
Thanks,
Christoph Both
#223 Classic Wolfville Nova Scotia, Canada


From:owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of GRAHAM SINGLETON
Sent: Tuesday, August 03, 2010 1:08 PM
To: europa-list@matronics.com
Subject: Re: Europa-List: Stall spin characteristics

Bill
the stall characteristics are dependent on the quality and accuracy of the
leading edge. LE is relatively small radius and its all too easy to sand the
bump off with the effects you mention. In UK we are told to use stall strips or
a stall warner.
Stall strips are recommended and if carefully adjusted will calm the stall. Get
hold of the digital print out of the section and make templates every foot or so
spanwise. Then spend hours and hours getting the section right. There is a tiny
bump under the LE which is important but hard to spot.
Graham



________________________________

From:William McClellan <wilwood@earthlink.net>
To: "Europa-List@matronics.com" <Europa-List@matronics.com>
Sent: Tuesday, 3 August, 2010 16:50:07
Subject: Europa-List: Stall spin characteristics

--> Europa-List message posted by: William McClellan <wilwood@earthlink.net>

I understand that the Europa is very prone to abruptly dropping a wing, trying
to enter a spin, when stalled with full flaps in the landing configuration. On
the other hand, in the clean, unflapped configuration the stall is very benign.
I wonder if this is true of all Europa's or only some depending on the
particulars of that builders end product and possible modifications. I have
nearly 1000 hrs in a Citabria with very much of it flying into short
"backcountry" dirt strips requiring significant STOL characteristics. I don't
have flaps so regularly use severe straight and banked slips. The Citabria is a
"dirty" plane compared to the "very clean" Europa so I believe the use of severe
slips in the Europa is never warranted. My experience with very clean planes, I
also have 1000 hours in my high performance glider and since the air brakes work
so well, severe slipping is not needed...though some less than ultra clean
gliders, ie, trainers, can make use of severe slipping!
. It seems likely that Cliff Shaw's accident was a result of this abrupt spin
stall characteristic in landing configuration. I have a rule (though not
unique), "never skid a turn", keeping a nice margin above stall. It seems that
the Europa (and probably all super clean planes, for instance the Cirrus), have
a propensity to severe stall spin in landing configuration. I understand that
many Europa pilots land with an airspeed up to 65 but this uses a greater
landing distance considering the stall speed is in the 40's. Europa's original
touted mission was short field, pasture strips. For those who often use this
short field capability, I would like to know the particulars to make the Europa
perform safely in this manner. Not having piloted a Europa, but am close to
finishing my build, I am curious to these questions.
href="http://www.matronics.com/Navigator?Europa-List" target="_blank">p;
-Matt Dralle, Libution" =======