Tracy Crook wrote:

The top motor mount tubes may have to peirce the exit
ducts.

The gif is largely self explanatary.

Comments and questions?


Paul Lamar             rv6cool3.gif

Looks like a workable design but why do you call it an external
 diffusion type?   Looks like internal diffusion to me.

Tracy Crook   rws@altavista.net

IMHO Internal diffusion implies a long entrance duct like the 
P51. The rads being so close to the front of the airplane there
is no room for a long ducts so you use a big opening and hope
that it is just the right size so it does not spill over
and increase the overall drag of the airplane.

IMHO The exit duct has little to do with the term external 
diffusion other than the nozzle must apparently be larger
to encourage the flow through the radiator. I was hoping
that would not be quite so necessary because I was exiting
the air in a low pressure area over the wing and not to
a neutral pressure area.

Add a hole in the cowling and an exit area to cool the engine and
exhaust pipes. :-)

Here is the sketch again for some of our late subscribers.
 
Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

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