Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Hollow
Patent
1986-11-03
1989-03-28
Barefoot, Galen
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Hollow
291568H, 244123, B64C 318, B21K 304
Patent
active
048159395
ABSTRACT:
A transversely twisted hollow airfoil member is provided by diffusion bonding together airfoil components each having a skin or shell in the form of a partial airfoil twisted transversely along its length and one or more internal support ribs having bonding surfaces which are not twisted transversely along their length. Each support rib extends substantially normal to a bonding plane defined by bonding surfaces on the support ribs. As a result of the rib and bonding surface orientation, the airfoil components can be forged and the components bonded together at elevated temperature in short times between dies movable by high pressure toward one another normal to the bonding surfaces.
REFERENCES:
patent: 1786307 (1930-12-01), Kreigh
patent: 1818519 (1931-08-01), Young
patent: 2210642 (1940-08-01), Thompson
patent: 3736638 (1973-06-01), Stone, Jr.
patent: 4089456 (1978-05-01), Toppen et al.
patent: 4501053 (1985-02-01), Craig et al.
patent: 4512069 (1985-04-01), Hagemeister
patent: 4643646 (1987-02-01), Hahn et al.
Airfoil Textron Inc.
Barefoot Galen
Timmer Edward J.
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