Propeller blade configuration

Details Propeller blade configuration Propeller blade configuration

1991-06-11

1993-07-13

Look, Edward K.

Rotary kinetic fluid motors or pumps

Natural fluid current motor

Having specific features for water current

416223R, 416DIG4, B63H 102

Patent

active

052268047

ABSTRACT:
A propeller type runner is described in which the leading edge of each blade "leans" forward from the root in the direction of rotation to reduce cavitation and increase efficiency. The "lean" provided to each blade of a five blade design is such that the leading edge of each blade obscures a large portion of the trailing edge of the preceding blade.

REFERENCES:
patent: 1088883 (1914-03-01), Donath
patent: 1123202 (1914-12-01), Amnelius
patent: 1352877 (1920-09-01), Cogliolo
patent: 1454542 (1923-05-01), Grilli
patent: 1613816 (1927-01-01), Biggs
patent: 1706608 (1929-03-01), Holmes
patent: 2754919 (1956-07-01), Blue
patent: 2859909 (1958-11-01), Stalker
patent: 3442220 (1969-05-01), Mottram et al.
patent: 3972646 (1976-08-01), Brown et al.

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