HI Paul,

Thanks for the great paper. It confirmed some of my hunches on using an axial turbine to recover some of the wasted energy.  It would make sense that pressure drops to ambient in the exhaust stack because after-all it is connected to the huge atmospheric sink, so that leaves us with heat and velocity.  Heat is bleeding off rapidly but an impulse turbine can capture power from the  high speed gases fairly efficiently with little back pressure looses.

Your time to climb project gave us some valuable insights that with a boosted rotary engine, there is always a large percent of the exhaust energy that has to be wasted either through the waste gate or blow-off valve.  I believe your original insights are correct. The absence of valves make the rotary a gas generator. We could consider it to be sort of a peripheral turbine albeit an inefficient turbine.  The reason is the power plant in not complete to achieve a high potential.   It really does NEED to be connected to a blow turbine or even a plural of turbines.  Engineers have been looking at it backwards at least in aviation purposes. The rotary part of the engine should be the combined burner and compressor section of the axial turbine engine.

Received my billeted aluminum housings yesterday.  They look beautiful but I was surprise on how heavy they are compared to Racing Beat.  They would be of course be a little heavier because of the iron inserts.  Unfortunately I was only able to buy the  front housing from Racing Beat.  It appears that Racing Beat has stopped producing them.  Do you need some pictures of the billeted housings?

Cheers

Doug Fir

It would be nice if you had a larger copy of this jpg. The text is hard to read. Also more info on what it is.

Pictures on the housing would be great. Especially under the steel side wear surfaces. Also how thick is
the steel wear surface?

Paul