PROPELLER STRUCTURE AND SHIP INCLUDING THE SAME

摘要

PURPOSE: A propeller structure and a ship having the same are provided to reduce vortex of a propeller by reversely forming curved shapes of each mean camber line of propeller wings and cap wings. CONSTITUTION: A propeller structure comprises a propeller(30), a boss cap, and multiple cap wings(50). The propeller includes a propeller hub and multiple propeller wings(33). The propeller hub is arranged in a rotational axis(Cp). The multiple propeller wings are radially coupled to the propeller hub. Each propeller wing has an aerofoil section. The boss cap is coupled to the rear end of the propeller hub. The multiple cap wings are radially coupled to the boss cap and have an aerofoil section. Curved shapes of mean camber line of the propeller wings and the cap wings are opposite to each other within a predetermined radius around the rotational axis.