Rotational wake reaction steps for Foils

Details Rotational wake reaction steps for Foils Rotational wake reaction steps for Foils

1982-03-05

1984-11-20

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Differential or independent adjustment

416127, 416200R, B64C 1148

Patent

active

044836589

ABSTRACT:
The action of upstream and downstream foil sets rotating on a common shaft within a fluid is enhanced by fixing certain interrelations of the foils such as the axial distance between the foils, the radial index between foils and pitch of one foil relative to the other so that the foil stages are fixedly mounted with the foils of each stage being symmetrically and equidistantly spaced from one another and from the foils of the next adjacent foil stage so that the interacting uniform adjacent foil pressures and the upstream foil wake beneficially interacts optimally with at least one of the surfaces or boundary layers of the foils of the next adjacent downstream foil stage.

REFERENCES:
patent: 1073413 (1913-09-01), Faehrmann
patent: 1610689 (1926-12-01), Kogler
patent: 2407630 (1946-09-01), Dewan
patent: 2619318 (1952-11-01), Schaer
patent: 2717044 (1955-09-01), Kubota
patent: 2906447 (1959-09-01), Seed
patent: 2982361 (1961-05-01), Rosen
patent: 3023813 (1962-03-01), Fengler
patent: 3153454 (1964-10-01), Gaubis
patent: 4306839 (1981-12-01), Pien

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