WATER-JET PROPELLER Russian patent published in 2011 - IPC B63H1/00 B63H11/02 

FIELD: transport.

SUBSTANCE: invention relates to water transport, particularly, to water-jet propellers. Water-jet propeller comprises water intake 1, propeller shaft 4, wheel rotor 3, water-jet propeller housing and reverse control device. Said water intake is provided with inlet protective screen 2, flange to connection with propeller housing and stern gear with oil chamber. Propeller shaft incorporates stern and bow thrust bearings 11 and 12, respectively. Propeller housing comprises flow-straightening grids 5. Thrust bearing, jet nozzle and reverse control device are arranged in said flow-straightening grids. Reverse control device comprises rotary nozzle 6 with control-surface actuator and reversing flap 7. Radial roller bearing with detachable inner ring 13 is fitted in the case of flow-straightening grids, on propeller shaft stern end.

EFFECT: simplified design, higher efficiency.

6 cl, 12 dwg