snips.

A fellow named Mike Manville and Dick Rutan placed their armpit scoops just
above the wing on their LongEZ aircraft, very similar to what my SQ2000 has,
and reported significant cooling improvements over the scoops that used to
be  just under the wing. The designer of my SQ2000 said he used that
information to design the scoops on the SQ2000.  For what it's worth. Paul
Conner

That was way back in 1997. The last time I saw Dick's blue Long EZ it had water
cooled cylinders and a P51 scoop underneath. I think he has since done away
with the water cooled cylinders. So far almost nobody has copied the top
scoops except SQ. When I was at the Jack Pot NV canard races last year I saw no scoops 
on the top of the canards. I did see a couple of armpit scoops. Here are the pictures.
Same thing on the canard racers at OSH this year.

My hangar neighbor Klause Savier modifies and tests his canard airplane 
almost daily. If it worked I am sure he would use it as he has the fastest 
home built canard airplane in the world.

BTW if the scoop is on the top of the wing it is not called an "armpit".
That term is reserved for the scoops under the wing adjacent to the fuselage.
Just like when you hold your arms straight out at your sides.

Of course all this is neither here nor there as we are dealing with 
water cooled engines and the vast majority of canards flying today
are air cooled. As I said over and over and over and over on here 
many times before what works for an air cooled engine might not work 
for a liquid cooled engine. It totally escapes me why this subject 
keeps coming up. Perhaps the desire for a magic cooling solution is so
strong it shuts down people's ability to reason.

Look at any certified or soon to be certified pusher aircraft and you
will see P51 types scoops either on the top, the sides or on the
bottom. The Cessna huff and puff is the most common example.
A recent example is a new huff & puff aircraft designed by Burt Rutan 
called the Adam 500 on display at OSH this year. It has two P51 type
scoops. One on either side at the rear. In WW II it was the Arado huff and puff 
fighter plane with the same configuration. Search www.google.com for pictures.

Paul Lamar
 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2003 All world wide rights reserved.