[Windflier]

You’re a better engineer than I am, Charlie Brown. I have no idea what the similarities are between those two schematics.

[Paladin2]

[darkwing104]

The major component of both designs require a centrifugal fan. The big difference is the angle of the combustion fan blades by adjesting them to near 90 degrees.

The major obstacles of this design would be the design of the engine block, ignition timing and exhaust elimination. The concept looks cool.