Bill,
I just can't seem to visualise in my mind, what you are saying - a

flat

plate restricting the exhaust flow, seems counter productive?
A small drawing would help!
George (down under)

George I'll do a drawing. The way to think about it is this,
think of the standard round canister with one flat slice on the

primeter. Very little restriction but it forces the flow to be turbulent.
The cool tube concept could still be used.

Bill Jepson

Bill I think I'm getting it, but a drawing will clear it up.

I'm trying to get a chance to get up to the Jabiru factory and have had a
discussion with the owners and they will give me a tour. One of my mates is
an ex 747 pilot and knows them well so a few of us may go up together.

This may well be something worth investigating as I need to quieten the
engine for the demonstrator I'm trying to build-up for display. I've already
been given strict instructions by 'She who must be obeyed' about annoying
the neighbours.
George (down under)

 
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