Compliant interface for ceramic turbine blades

Details Compliant interface for ceramic turbine blades Compliant interface for ceramic turbine blades

1982-04-19

1983-11-29

Coe, Philip R.

Fluid reaction surfaces (i.e., impellers)

Specific blade structure

Coating, specific composition or characteristic

416219R, 416221, F01D 528

Patent

active

044178549

ABSTRACT:
The present invention provides a ceramic turbine blade having a ceramic root flange and a metallic compliant layer which is electroformed to the ceramic root flange and then machine-formed to the geometry required for attachment to the turbine disk. Because of its intimate bond to the surface of the ceramic root flange and because of its compliant nature, the metallic compliant layer serves to uniformly distribute stresses induced by the attachment of the blade to the turbine disk. The present invention also envisions the attachment and use of a fir tree root section to an otherwise complete ceramic blade without risk of stress fracture or modification of the turbine disk.

REFERENCES:
patent: 1150436 (1915-08-01), Lang
patent: 3897171 (1975-07-01), Stahl
patent: 3922109 (1975-11-01), Hagen
patent: 3932227 (1976-01-01), Rothenberg
patent: 4142836 (1979-03-01), Glenn
patent: 4207029 (1980-06-01), Ivanko
patent: 4323394 (1982-04-01), Hoffmuller et al.

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