Blade-like profiled device for acting on a gaseous or liquid flu

Details Blade-like profiled device for acting on a gaseous or liquid flu Blade-like profiled device for acting on a gaseous or liquid flu

1989-11-15

1991-03-26

Peters, Jr., Joseph F.

Ships

Keels

114274, B63B 338

Patent

active

050020013

ABSTRACT:
The invention relates to a profiled device configured as a slotted blade head to improve the efficiency in blade-like structural elements that have a gas or a fluid flowing around them such as foils, vanes of jet engines, propellers, keels of ships or the like. The blade head is formed of a group of profiled blade elements (3) having a laminar profile with radially running slots formed between the blade elements at a distance from the base of blade head. End edges (4) of the blade elements (3) that are consecutive in an initial flow direction (X) are offset relative to each other each in the direction of a pressure zone (6). Slots (2) between the blade edges (4) are of a nozzle-shaped configuration with a flow direction extending from the pressure zone (6) to the underpressure zone (5). The blade elements (3) are located within a profile envelope (73) set by the blade base of the group of blade elements.

REFERENCES:
patent: 4172574 (1979-10-01), Spillman
patent: 4687416 (1987-08-01), Spranger

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