Falciform blade for a propeller and its application in particula

Details Falciform blade for a propeller and its application in particula Falciform blade for a propeller and its application in particula

1988-07-08

1989-10-03

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Rotor having flow confining or deflecting web, shroud or...

Axially extending shroud ring or casing

416169A, F04D 2938

Patent

active

048712981

ABSTRACT:
The blade (10) for a propeller constituted by a hub (20) to which the feet (12) are fixed has a leading edge (14) and a trailing edge (15) which is formed by two arcs (152, 153) having respective mean radii of curvature (.rho.2, .rho.3) which are different and interconnected without an angular point. These edges are both curved in the downstream direction and define a blade which narrows from the axis to the periphery of the propeller. Application in propellers of motorized fans associated with automobile vehicles.

REFERENCES:
patent: 1228776 (1917-06-01), Hult
patent: 1467227 (1923-09-01), Capell
patent: 4358245 (1982-11-01), Gray
patent: 4459087 (1984-07-01), Barge
patent: 4548548 (1985-10-01), Gray
patent: 4569631 (1986-02-01), Gray
patent: 4569632 (1986-02-01), Gray
patent: 4684324 (1987-08-01), Perosino
patent: 4685513 (1987-08-01), Longhouse et al.

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