Blades for high speed propeller fan

Details Blades for high speed propeller fan Blades for high speed propeller fan

1988-07-15

1989-07-11

Garrett, Robert E.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Radial flow devices

416235, 416236R, 415119, B65H 126

Patent

active

048466298

ABSTRACT:
Each blade of a high speed propeller fan extended radially outwardly from a member connected to a rotating body has a coarsened surface at least part of its suction side. The coarsened surface has a coarsened density or depth which gradually increases from the rear edge of the blade to its front edge.

REFERENCES:
patent: 573562 (1896-12-01), Wittram
patent: 978677 (1910-12-01), Taylor

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