> > I just found the reference to the lowest recorded SFC in an aviation
> > engine. The 1950 Napier Nomad with a 0.36 SFC turbo-compound,
> > supercharged 12 cylider diesel 3,000 hp.
> > http://en.wikipedia.org/wiki/Napier_Nomad Now, that's a
> > worthy challenge to beat with a 16X rotary engine. (not the hp,
> > the SFC)
> >
> > Greg
> >
> >
> > They have one in the Ottawa museum as well as the Smithsonian.
> > Here are some pictures I took at the Smithsonian.
> >
> > Paul Lamar
>
>
> Yes Greg, but Paul has in store one more reason for a rotary turbo
> compound over the Nomad. Even the inventors at Pratt and Whitney did not
> know. When they but down this paper for a turbo rotary compound
> engine http://www.wipo.int/pctdb/en/wo.jsp?wo=2004074655
>
> Greg, I wonder if the Canadian Gouverment could give you a grant by
> possibly building an even lower BFSC engine than the Nomad.
>
> Marc Joseph
> Montréal Canada

Dear Greg:

Someone may say I am being sarcastic when I make this suggestion, but I
am being quite serious.

If Canadian government would give you a grant, why not abandon the idea
of basing your 1,000 hp rotary engine on an existing Mazda engine?  Make
a completely new engine, whose architecture, dimensions and systems are
optimized for reliable aircraft 1,000 hp?

I don't know: let's say that the combustion chamber is optimized for
_combustion_, like the AIXRO engine.  The " bore," "stroke," and the
turbocompounder, and the air and oil cooling, is optimized to produce
1,000 bhp in an aircraft application: i.e., for hours on end, without
overheating or blowing up.   All the horsepower of the gas turbine, but
using half the fuel.  Let's make the four rotor bigger, much bigger,
than the Mazda engines.  How about letting the engine displace 7
liters?  In one sense we are talking (correct me if I am wrong) about
making the turbocompounded rotary equivalent of the Merlin engine.

Greg, only money and time stand in your way.  What you will create will
be history, then mythology.  Perhaps you could name your new engine
"Ganieda," after Merlin's wife.  Beautiful, but just as strong.

Greg, you and the Canadians are going to have one sweet engine on your
hands.  And you and Canada will be laughing all to the bank selling
these wonderfull engines to your desperate nieghbors south of the
border, even as you sell them at reasonable prices.  We would be eager
to throw cash over the border for these engines, eh?  Maybe other
countries which remain in the Commonwealth, like Australia, would be
interested.  And then, even Japan!  Just make the engine left-hand drive
for them! :-)

The door is open. All you must do is walk through.

Buzz :-)

Leslie Nordman