RUDDER PROPELLER WITH ELECTROMAGNETIC SHAFTLESS PROPULSION DEVICE Russian patent published in 2009 - IPC B63H20/16 

FIELD: shipping building industry.

SUBSTANCE: invention refers to shipping building industry and deals with building of ship propellers for spatial movement of objects on surface or inside fluid medium, and providing controllability of objects. Rudder propeller consists of a shaftless propeller-bladed propulsion device and rotary mechanism of blade rotation plane. The latter comprises two electric motors with built-in electromagnetic brakes and external gears which are engaged with a spiral cone-type wheel whereto there rigidly attached is supporting frame of electromagnetic propeller-bladed propulsion device, which at the same time serves as propeller shrouding. That electromagnetic propulsion device is three-phase and synchronous, and is excited from constant magnets located in propeller blades. The casing of electromagnetic propulsion device consists of interleaved ferromagnetic core of stator with three-phase winding. Interleaved ferromagnetic core of rotor with short-circuit starting winding is arranged along radial direction inside stator core at the distance of air gap therefrom.

EFFECT: invention simplifies rudder propeller design, reduces power required for its operation, and improves maneuverability of movement and economy of useful energy conversion.

2 dwg