PROPELLER Russian patent published in 1998 - IPC

Abstract RU 2108265 C1

FIELD: shipbuilding; ship's propellers. SUBSTANCE: propeller includes blades of convexo-concave section with helical surface which has cup-shaped form; sections of this surface intersected by longitudinal planes have curvature and angle of inclination to axis of propeller monotonically decreasing farther and farther away; helical surface of blades have form of parabola in above-mentioned sections. EFFECT: increased thrust of propeller due to positive direction of water entrapped by blade along axis of propeller. 2 cl, 2 dwg

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RU 2 108 265 C1

Authors

Seleznev Ju.V.

Poltavtsev A.A.

Dates

1998-04-10—Published

1995-06-26—Filed