Turbine rotor assembly of ceramic blades to metallic disc

Details Turbine rotor assembly of ceramic blades to metallic disc Turbine rotor assembly of ceramic blades to metallic disc

1978-06-12

1980-06-10

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

416220R, F01D 528, F01D 530

Patent

active

042070295

ABSTRACT:
In a turbine rotor assembly wherein ceramic blades are secured to slots provided in the periphery of a metallic rotor disc, a metallic jacket is interposed between each blade root and disc slot, and ceramic potting material is, in turn, interposed between the metallic jacket and the ceramic blade root. The metallic jacket also includes locking means to prevent upstream or downstream axial movement of the blade in the disc slot, with the resulting assembly effectively isolating the ceramic root from high localized loads and permitting a more uniform stress distribution on the critical root load bearing surfaces.

REFERENCES:
patent: 3216699 (1965-11-01), Schoenborn
patent: 3317988 (1967-05-01), Endres
patent: 3784320 (1974-01-01), Rossmann et al.
patent: 3814539 (1974-05-01), Klompas
patent: 3910719 (1975-10-01), Hessler et al.
patent: 4051585 (1977-10-01), Walker et al.

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