Ring boost propulsor

Abstract

The Propulsor includes a tubular oval ring and a duct assembly with their pumps, a nozzle ejector with a thrust impeller, a hydraulic pipe-connector with its valve-adjuster, a spring piston valve unit, and devices of motor vessels' hydraulic infrastructure. The ring's pumps act in self-series, thus rising the water pressure inside the ring up to adjusted level. The static portion of the risen pressure is hydraulically transmitted to the thrust flow in the duct, thus providing a massive boost to the common thrust developed by the pumps of the duct assembly. The motor vessel gets boosted propulsion with larger thrust and correspondingly higher speed.

1 . A Ring Boost Propulsor for motor vessels, comprising:
 a) a tubular oval ring-tunnel with at least one axial-flow pump placed inside said ring-tunnel, and   b) a jet-duct assembly with two sealing gate-pumps and a nozzle-ejector with a thrust impeller.   
     
     
         2 . The Ring Boost Propulsor of  claim 1  wherein said ring-tunnel and said jet-duct assembly are hydraulically linked up by at least one pipe-connector wherein each includes a valve-adjuster. 
     
     
         3 . The Ring Boost Propulsor of  claim 1  comprises its interdependent Method which includes:
 a) self-series work of the pumps inside oval ring tunnel for cyclical rising the pressure of the ring's water flow, and 
 b) hydraulic transmission of said risen pressure from the ring tunnel flow to the jet-duct thrust water flow, and 
 c) usage of said risen pressure for boosted total thrust obtaining and possible cavitation preventing.