Ken's Creations - page 2
If you look closely you can see the nozzles at the blade tips. My tests were done using a large trailer mounted industrial compressor. While the pressure required was only about 13 psi, the volume was up around 250 to 300 cfm.
I designed this jet pump in SolidWorks for mechanical engineer Jim Giebeler. It is a combination disc and impeller pump that will not cavitate.
The greenish cube behind the engine is a Vicker's hydraulic transmission. The transmission was originally designed for turning the gun turrets on B-17 Bombers. They were sold war surplus for $10.