Tracy Crook wrote:

Here's some progress shots of Bernie Kerr's RV-9A project.  Amazing

how

that

Griffin rad fits in the cowl .

Tracy Crook
tcrook@rotaryaviation.com

Yes it fits but the back side is not unobstructed enough
and the exhaust will transfer a whole lot of heat to the
back side of the rad. Good luck Burnie :-)

What does he have against putting it under the engine?

Paul Lamar

Hey Tracy!
Bernie's rad looks great!  Shouldn't be any problem with heat if he uses

a

heat shield on the exhaust.
Vaughn.
PS, who's redrive is that?

It still won't work. The necessary heat shield will add further

obstructions

behind the rad. In effect it is little different than the Power Sport
rad mounted too close to the firewall. That also does not work. Am I

really

saying this or is it my imagination. Is anybody reading this?
What have I been doing the last four years?

Paul Lamar

Hang in there Paul.   You have been providing keen analytical insight,
technical research, morale support, prototyping and dialog that has many
folks taking major steps forward in a number of areas to advance the state
of the art.  But, keep in mind that most flyers are inherently conservative
and cautious - not necessarily a bad trait considering the potential risks.
Despite the cooling system inefficiencies of some of the currently flying
rotaries - they are flying and that factor carries considerable weight
(whether it should or not is another matter). While they may not work
terribly well, they do work.

So I don't think its a case of folks not reading or hearing or appreciating
the ideas put forth by you and others in an effort to advance the state of
the art.  But considering the investment in time and money, I think there
are those who are not quite willing to accept such ideas (for their
project) -until there are ample examples of it working in flying rotary
powered aircraft (in other words, let the other guy do it first {:>}).

 I believe several flying examples will quickly cause folks to abandon the
more conventional radiator installations for installations under-the-engine
as their are clearly some advantages.  Once there are several flying I think
you will see a decline in the convention installations (even if it means
having to work with fiberglass  ugh! -).   So don't give up the quest - it
will just take longer with some of us.

Best Regards

Ed.  Anderson

 
The AirCraft Rotary Engine NewsLetter.  Powered by Linux.
ACRE NL web site. http://home.earthlink.net/~rotaryeng/            
Copyright 1998-2002 All world wide rights reserved.