Fluid reaction surfaces (i.e. – impellers) – Specific blade structure – Having wear liner – sheathing or insert
Patent
1996-01-29
1998-07-28
Kwon, John T.
Fluid reaction surfaces (i.e., impellers)
Specific blade structure
Having wear liner, sheathing or insert
F04D 2918
Patent
active
057854980
ABSTRACT:
The present invention provides a composite airfoil, particularly useful as a wide chord fan blade having a high degree of twist in a large high bypass ratio turbofan engine. The composite airfoil of the present invention has a reinforced region of its airfoil that extends a portion of its span from its tip and a portion of its chord from its trailing edge. The region is covered by thin metallic sheathing bonded to trailing edge surfaces of the blade in a manner to reinforce that portion of the composite blade.
REFERENCES:
patent: 1545560 (1925-07-01), Heath
patent: 1939357 (1933-12-01), Lorenzen
patent: 3148954 (1964-09-01), Haas
patent: 4712980 (1987-12-01), Gely et al.
patent: 4795313 (1989-01-01), Coulon
patent: 5210946 (1993-05-01), Monroe
patent: 5306120 (1994-04-01), Hammer et al.
Busbey Bruce C.
Elston, III Sidney B.
Quinn Kerry W.
Szpunar Stephen J.
Tucker James W.
General Electric Company
Hess Andrew C.
Kwon John T.
Scanlon Patrick R.
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