Scalloped ceramic turbine

Details Scalloped ceramic turbine Scalloped ceramic turbine

1979-08-20

1981-10-20

Freeh, William L.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

F01D 514, F01D 528

Patent

active

042957915

ABSTRACT:
A unitary ceramic gas turbine wheel for use in gas turbine engines having turbine inlet temperatures in excess of 2000.degree. F. includes an outer rim of reduced axial length that is merged with scallops in the upstream face of the turbine wheel to reduce leading edge stresses in integral turbine wheel blades of airfoil configuration and wherein the fairing of the airfoil into the rim is configured to produce a reduction in the polar moment of inertia of the turbine wheel to improve engine acceleration characteristics.

REFERENCES:
patent: 2888239 (1959-05-01), Slemmons
patent: 2922619 (1960-01-01), Slemmons
patent: 3121555 (1964-02-01), Aspinwall
patent: 3255994 (1966-06-01), Dreimanis
patent: 3262676 (1966-07-01), Huebner, Jr. et al.
patent: 3897171 (1975-07-01), Stahl

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