A marriage of the turbo fan and the Wankel.

    The axial compressor section feeds high pressure air to
    he Wankel intake. It is further compressed   ten times
    by the Wankel. The Wankel exhaust drives the turbine shaft which
    goes through the center of the e-shaft forward to drive the fan.
    It could go into a gear box and drive a propeller.


    With a 4 rotor engine  each single Wankel rotor assemble  could be
    rotated 90 degrees. That would simplify the exhaust and intake ducting
    if any was
    needed and improve the flow of the gases in general.

    An annular air to water heat exchanger could be inserted between the
    axial compressor and Wankel air intake to cool the compressed intake air.

    I like it.  One of the simplest configuration of a turbo compound Wankel.

    It is very similar to my version with  the turbine mounted on the e-shaft
    only simpler.

    I'll work on a 3D when I get time.
     ------------------------------------------

    Here is the Rolls Royce Wankel turbo fan in 3D more or less.

    Amazing idea. The main issues as I see them is to have the concentric shaft
    stiff and strong enough. Another issue the the shape of the intake and
    exhaust ducting. If one makes them fan shaped skin friction drag becomes
    an issue.


    Paul Lamar

Paul,
That is truly an interesting idea. It gets the turbine thrust just like a jet.
If people have ever seen one this reminds me of the Napier Nomad.
This is just one step more direct putting the rotary inside the fan section!

Bill Jepson



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