FIELD: manufacture of pumps. SUBSTANCE: thickness S<Mv>p<D> of blades in root sections is monotonically increasing over length of taper section on side of inlet from thickness of pointed leading edge to magnitude determined from mathematical expression which stipulates relationships of sizes between main dimensions of pump impeller, its rotational speed, parameters of medium being handled and material of blades. EFFECT: improved power and anticavitation properties and increased service life. 2 dwg
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