12 a

Stock Mazda rotary.

300 HP out p-port 9,000 RPM  .47  BSFC

200 HP waste heat  cooling the  engine

500 HP waste heat out of the exhaust. No
exhaust valves.

With exhaust valves piston engines have
only 400 HP waste exhaust heat.

Wankels have no exhaust valves so 500 HP
comes out.

1000 HP total energy in the fuel

If we get just 250 HP out of the
exhaust blow down turbine
we have 550 HP out with the turbine HP.

Same fuel burn and the BSFC will be in
the mid .3xx.

Paul Lamar


So would the same turbine work for either a single rotor or a twin rotor?

could you provide the IGES file for an optimized turbine to
the RD!C for a single rotor P-port? a clamshell housing for
the turbine assembly, I'm thinking that the prices of
having custom DMLS are falling and that such a product is possible.

So I'm thinking a single rotor P-port with turbo-compound running
at a leisurely 6,555 rpm would generate what horsepower?

Craig Smith


Yes. An early Lear Jet turbine is about the right size.

That IGES  would be a lot of work to get the blade angles right.
This one is a wild ass guess. For automotive or cargo plane use a variable
blade angel would widen the HP curve.

A single rotor version would be about  200 HP or so at 6,500 RPM.
That would be  great as it would be a lower cost way of proving the technology.

The IGES and step files are in the zip file.

Craig, are you still working for Ford?

Paul Lamar.

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