This is better than a separate duct around the fan
as the fan being buried in the fuselage there is less total
skin friction drag. It won't be as efficient as a prop
but it is more efficient than a conventional external ducted fan.

Of course with 650 HP you may not care. It looks
like a jet aircraft and goes pretty good :-)

Another advantage is there is no gear box required
so that saves 30 to 50 pounds and about $3,000.
The main fan is cheaper and much lighter as it is not running at
1400 to 1800 F temperatures so it can be made from
carbon fiber.

A further advantage is the simplicity of the turbo
compound feature. Since no gear box is required
this saves weight and money. In fact most radiant waste heat
from the engine, normally unrecoverable, is used to increase
the pressure in the duct slightly. Much like an after burner.

It also heats the cockpit.

This is well  before I wrote the book "How To Cool Your Wankel"
so some improvements can be made in this cooling system.

I should have gotten  a patent on this thing but I was way ahead
of it's optimum time :-)

I tried to sell it to Southwest Technical Institute but they had
no vision :-)

It takes a brilliant engineer to recognize a brilliant engineer :-)

I may do some 3D's if any one is interested.

Paul Lamar

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