X-Mozilla-Keys:                                                                                 

tcarrico wrote:

Paul,
I am building four place canard (very similar to a COZY MKIV)
and am going to put a 13b in it.

I have some questions about the radiator configuration and thought
I would post my ideas to the group.

I like the idea of the Naca inlet (per plans), but think it would
be marginal. I am not sure I could get a proper internal diffuser
to fit within the cowl.

My idea is to mount the radiator underneath the motor similar to yours
and duct from there.  Something like a P-51 style intake, and I have
options for exit.  All of the exits would be slightly higher than
the intake, but the shape of the exit has to be important.  I want
something that is variable but I think that a rectangular opening
with a flap is not the most efficient.  I would imagine that something
round would have a better chance at evenly speeding up the air.
I really need to sketch my ideas out.  1 picture 1 thousand words...

I could use one armpit scoop as intake and accessory cooling, and the
other
as oil cooler.  Not sure if three ducts are better than one.  With the
three
duct arrangement, I could adjust one without having to worry about
affecting
the others, but I am looking for speed.  I would think that the sum of
three
smaller ducts would be the same as one large duct.  Any thoughts on that
one?

tc

Well my guess is they would all be slighty more drag than one large
one..

Something that looked like a large movable ice cream cone in a round
duct would
work as a trick exit duct.


Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org