FIELD: shipbuilding.
SUBSTANCE: invention relates to shipbuilding and can be used in designs of ship propulsors, namely propellers. Proposed propeller comprises blades secured on propeller hub. Note here that said hub is provided with inner through cavity and additional propeller device is arranged therein. Mounting of blades on hub is carried out through damping elements, and blades of additional propeller device are offset by angle of installation in plane of rotation relative to blades fixed on hub of screw, wherein the number of blades of the main and additional propeller devices differs from each other, and the blades of the additional propeller device are attached to the hub.
EFFECT: use of invention improves propulsion characteristics of propeller and reduces acoustic pollution of environment.
6 cl, 2 dwg
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