HIGHLY PROTECTED VERSATILE SHIP PROPELLER Russian patent published in 2014 - IPC B63H11/00 

FIELD: transport.

SUBSTANCE: proposed ship propeller includes cylindrical body opened at opposite butt ends inside which body following devices are coaxially installed: contrarotating screws, reverse reducing gear input shaft of which is designed to be linked with engine driving shaft. Each propeller screw at its blade ends has cylinder course on the outer surface of which ring gear is created which ring gear is kinematically connected with corresponding output gear of reverse reducing gear. Rudder gear is fixed on body at one of open butt ends.

EFFECT: higher reliability and efficiency of propeller, higher manoeuvrability, lower hydrodynamic losses.

10 cl, 1 dwg