[djf]

This is just the passive rotor part.

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.

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.

Then you could idle on one chamber, cruise on two chambers, pass or go uphill on three, whatever you want.
And firing timing would not be much of an issue, because as the piston itself rotated under the combustion chamber, it would be activated.

Really, it’s a very simple idea.

[Jotmo]

Simple to you, but we can't see what your trying to do here. And the drawing in not much help.

Does the "top" of the piston stay in contact with the outside wall of whatever chamber the rotor is in?

[Fichori]

This is how I do up my designs:


Its a regulating 2-way quick exhausting valve for operating a pneumatic ram.

the ram connects to the bottom, the control valve to the top.
It exhausts out the side.

If you donate to the next FReepathon, I might be willing to do up some renderings of your design..

[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.