FIELD: transport.
SUBSTANCE: invention relates to ship building and may be used in screw propellers and active control means. Ring propulsor comprises motor, ring adapter and ring rotor that make a water-way duct and screw propeller. Screw propeller blade roots are fitted at ring rotor while blade tips are located in the area of water-way duct and fastened together. Blade tips are fastened together and roots are fitted in rotor via damping shims.
EFFECT: decreased vibration and noise pollution, longer life of propeller screw.
2 dwg
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