[Jotmo]

This is just the passive rotor part.

Passive? If it's passive, what's reacting to cause the rotor to turn?

It would be mounted in a round shaped holder that supplied compressed air, or one that had hemi heads and combustion chambers, or magnetic coils or whatever.

"magnetic coils"

Now you really lost me. How does that work?

If it was used in an engine design, you might have say 3 pistons per rotor. You could then have three combustion chambers external to the rotor.

So if the "chamber" is external to the rotor what are the reaction forces working against? The piston appears to be internal to the rotor.

I can only see two ways for this rotor to move.

One way and it's a sliding vain design. The other way and it's an impulse turbine, except with a spring loaded pistons in place of the buckets, which would be completely superfluous to such a design.

[Fichori]

"magnetic coils"

Like the coils in an electric motor.

You put current through the coils, that makes magnetism, which pulls on a permanent magnet, which causes rotation...

I think thats the idea anyway...