Marc,

The turbine itself is among the most effective mufflers you're going to find.

For something after that, a ceramic-based burns stainless muffler
might be lightest and most durable
(http://www.burnsstainless.com/UltraliteMuffler/ultralitemuffler.html).
They could probably make it in 321 or Inconel by request. They aren't
cheap though.

-Chris

On Wed, Nov 12, 2008 at 12:03 AM, Rotary Engine <rotaryeng@earthlink.net> wrote:

"Be careful what you wish for, lest it come true" ;)

So, now, please gentlemen, what components/assemblies would experimental
aircraft builder mostly need from us rotary people? - First, foremost,
and then nice-to-have...
This subject somewhat bloated to kind of "State of the Union"... So
please bear with me...

Why to ask?
Immediate Selfish reasons ;) I have to decide a subject for my thesis
work. And besides, there's been so much attention to details that i'm
not sure of the current big picture, and besides, this is interesting ;)

Why to answer?
I figured that perhaps i could do something that's both useful and
interesting, instead of eg. those wonderful pulp pump dynamics... and,
besides, this should be interesting...

SO, would you have..

Better PSRU?
One with provision for constant-speed prop? Lighter? Neater? Cheaper? Or
will just having a new kind of bell housing do fine?

Better Fuel Injection/ECU?
Is Tracy's ECN good enough, or is there still something that needs
attention?

Better induction manifold?
Why? Original too clumsy/heavy? For both 13B and Renesis?

Dry sump?
Now would that make aerobatic chaps happy?

Backplate?
A l&#224; Mistral? How much would this make difference on engine mounting
ease/weight and on driving accessories?

Firewall-forward kits?
No-brainer. Of course :) But for what kitplanes?
RV-8, Lancair Super II and CH-801 as starters? Paul and Jerry have made
a fine work with the mounts, and there's been plans for ducting also...
but can we say that it is a FWF kit yet?

Turbos that keep together?
How bad is the rotary+turbo issue, really? Some fellas are flying with
'em all the time, so problem solved?

New midblock to get 3-rotor engines easily?
20B's rarifying to extinction? How about just biting the bullet and
making a usable midblock to get 3-rotor engines again? Why? To have
RV-10, Glasair III and Lancairs on menu again!
And then the salient point: for 13B or for Renesis blocks?


Turbine-performance featherweight 4-rotor Hi-rev P-port compound
intercooler wonders that consume almost nothing and cost next to
nothing? And airframe to match to break Every FAI record Ever made!!

Sure!
Why?
Becuse We Can!!!

But, um, what things should be done first?

Cheers,

Petri

My vote is turbo compound for lower fuel burn.

Paul Lamar

Hi Petri,

My wish list is small.  First Turbo compound rotary engine.  Second,  a
real functionning muffler, durable, noise reducing and providing high HP
output.

Marc Joseph

Marc,

The turbine itself is among the most effective mufflers you're going to find.

For something after that, a ceramic-based burns stainless muffler
might be lightest and most durable
(http://www.burnsstainless.com/UltraliteMuffler/ultralitemuffler.html).
They could probably make it in 321 or Inconel by request. They aren't
cheap though.

-Chris