SCREW-PROPELLER OF PROPULSION SYSTEMS Russian patent published in 2018 - IPC B63H1/26 

FIELD: ship building.

SUBSTANCE: invention relates to shipbuilding, namely to propellers of propulsion systems of ships. Propeller of propulsion systems comprises a hub with blades, in each of which through grooves parallel to the median line of the blade in its cylindrical section are made, and the sectional angle of the groove axis to the normal line and to the profile chord is less than 90° in the direction of the vector of the circumferential linear rotational speed of the screw-propeller.

EFFECT: increase in the efficiency of the propeller and increase in traction force are achieved.

1 cl, 6 dwg