If this works it could be a revolution in low back pressure mufflers.

"Robinson, Chad" wrote:

It's fascinating. Two more questions. First, I understand that the 
exhaust stream would itself help pull air through, but do you have 
any projections regarding airflow required? Would a small (2" or so) 
scoop be sufficient to supply the air here, or is the expectation 
that the muffler would be out in the airstream?

Second, are there any further thoughts on whether air should also 
be injected into the outer portion of the can? If so, would this be 
done evenly (through, perhaps, small, evenly-spaced holes/ports around 
the front lip) or at one spot (maybe on the opposite side of the 
cooling tube from the exhaust ports)?

I lied - one more question. :) There was a comment earlier that
 canards wouldn't benefit as much since they wouldn't get assistance 
from the prop airstream. How serious is this? We canard enthusiasts 
have to accept that fact for everything else anyway - is it a serious 
detriment, or just a "shame"?

Thanks,
Chad

Mazda injected high pressure air into what they called a thermal reactor.
Purpose was to burn (for smog purposes) the raw hydrocarbons that made it 
through the engine. It generated a lot of additional heat we don't need. 

A this point in time I don't know. I would recommend we build only one 
and test it for internal flow.

Paul Lamar
 
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