Today's Message Index:
----------------------
1. 09:44 AM - Re: AOA & Flaps (RiteAngle3@aol.com)
2. 10:38 AM - Drop of the Hat Midweek Fly-out (David Watts)
3. 10:55 AM - Re: Re: Europa-List Digest: 18 Msgs - 12/23/03 (irampil@notes.cc.sunysb.edu)
4. 01:07 PM - Re: Drop of the Hat Midweek Fly-out (bryan allsop)
5. 03:34 PM - Re: Re: AoA and flaps (Alex Kaarsberg)
6. 04:23 PM - Cliff's Europa Build Pictures (Cliff Shaw)
7. 07:38 PM - Air Intake location for the 912S (Jeff Roberts)
Message 1
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--> Europa-List message posted by: RiteAngle3@aol.com
Alex, You have explained it fantastically. I have always said when you move
flaps you in effect put a totally new wing on the aircraft. We have proven
this over the years experimenting with the RiteAngle AOA systems. If that
wasn't true we sure would have not put all the $ into R&D, programming, and parts
for correcting up to 6 different flap positions on our RiteAngle AOA systems!
There isn't much different on some airfoils, huge differences on others. Our
vane measures the relative wind~ what the wing sees proves this fact.
Questions ~ reply off line.
Elbie Mendenhall, EM Aviation
Extending your flaps with fixed leading edges increases lift coefficient
but the angle of incidence becomes smaller, draw a line from l/e to t/e
to see the chord at any given point and configuration and then hold it
against the relative airflow to see incidence.
Extending leading edge devices such as slats or l/e flaps increases the
angle of incidence again given a steady pitch angle.
So thats what you get, a dramatic change one or the other way in pitch
required to stall at a given speed when extending one or the other.
Alex
Message 2
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| Subject: | Drop of the Hat Midweek Fly-out |
--> Europa-List message posted by: "David Watts" <dg.watts@virgin.net>
Well what a forecast that was!!!! It was thick fog here until about 3pm and a call
to Enstone revealed cloud/fog on the deck and raining.
I am going to assume that nobody made it there, if they did, well done.
Tomorrows forecast is similar to what we actually had today so it is probably impractical
to plan an attempt then.
The next best on the forecast is this weekend, which will give others a chance
to join in so I will put a message out before then. It will also involve a new
venue as we will be into January and working with a new set of free landing vouchers.
Dave Watts G-BXDY
Message 3
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| Subject: | Re: Europa-List Digest: 18 Msgs - 12/23/03 |
12/30/2003 01:54:39 PM,
Serialize complete at 12/30/2003 01:54:39 PM
--> Europa-List message posted by: irampil@notes.cc.sunysb.edu
Hi Graham,
Thanks for the note:
Ira
It puzzles me too. It's certainly constant vacuum, the spring restrains
the
diaphragm until enough force is created by the vacuum to compress it. The
force is pressure X area so it's proportional to pressure, area being
constant.
Fuel is pushed through by the ambient pressure on the carb float chamber,
so that will decrease with altitude , Seems to me it will be partly
compensating for the altitude but not completely. Still scratching my
head!
Graham
My question here is: is this not the same mechanism for slight reduction
of fuel flow with altitude for any standard carb, i.e., less venturi drop,
less vaporization?
Ira
Message 4
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| Subject: | Re: Drop of the Hat Midweek Fly-out |
--> Europa-List message posted by: "bryan allsop" <info@blackballclub.fsnet.co.uk>
I cant join in because my toy is still back in it's box, but I am enjoying
following the mail.
Oh the torments of the British weather.The only good thing about it is how
makes each of these fly-ins that much more worthwhile when you can get it
together.
I really hope that this weekend works out Dave.
A Happy New Year To the Fliers-in and all Europals!
Bryan Original Message -----
>
> Well what a forecast that was!!!! It was thick fog here until about 3pm
and a call to Enstone revealed cloud/fog on the deck and raining.
>
> I am going to assume that nobody made it there, if they did, well done.
>
> Tomorrows forecast is similar to what we actually had today so it is
probably impractical to plan an attempt then.
>
> The next best on the forecast is this weekend, which will give others a
chance to join in so I will put a message out before then. It will also
involve a new venue as we will be into January and working with a new set of
free landing vouchers.
>
> Dave Watts G-BXDY
Message 5
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| Subject: | Re: AoA and flaps |
--> Europa-List message posted by: Alex Kaarsberg <kaarsber@terra.com.br>
>Extending your flaps with fixed leading edges increases lift coefficient
>but the angle of incidence becomes smaller, draw a line from l/e to t/e
>to see the chord at any given point and configuration and then hold it
>against the relative airflow to see incidence.
>Extending leading edge devices such as slats or l/e flaps increases the
>angle of incidence again given a steady pitch angle.
>
ahemm... I think I should try that again- I had a lot of kids running
around me when I wrote this, now Im just tired but it doesnt look
right....
Straight and level flight and constant speed assumed, flaps out on a
clean wing increases wing area/lift coefficient and INCREASES angle of
incidence, slats alone DECREASES it.....
Aircraft equipped with both and with slats unserviceable have a
stipulation in the POH not to extend flaps alone or to watch pitch angle
as a stall occurs at a very low pitch angle, possibly less than 0(?)
Slats out only means you have to point the nose at the sky before it
will stall.
Now its taken me about 8 returns to the computer trying to write this
so if anybody would like to tell me Im wrong again, please go ahead :-\
Alex
Message 6
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| Subject: | Cliff's Europa Build Pictures |
--> Europa-List message posted by: "Cliff Shaw" <flyinggpa@comcast.net>
I found a way to "dump" all my build pictures to a web page. Go and take a
look.
http://www.msnusers.com/CliffsWileECoyoteEuropa/shoebox.msnw
The pictures are in TIME sequence. (as I built the plane)
Cliff Shaw
1041 Euclid ave.
Edmonds WA 98020
(425) 776-5555
N229WC "Wile E Coyote"
New Email:" flyinggpa@comcast.net "
Message 7
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| Subject: | Air Intake location for the 912S |
--> Europa-List message posted by: Jeff Roberts <jeff@rmmm.net>
I have trimmed and completed sanding all other openings on the cowling
except the naca vent at the top of the cowl for the 912 intake. Wondering if
any rain while sitting on the ramp may sneak into it. Have others directed
air intake from the sides or other areas using the 912S?
Jeff
A258
Airframe almost complete, engine mounted and still considering panel
options.
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