Ceramic-matrix composite nozzle assembly for a turbine engine

Details Ceramic-matrix composite nozzle assembly for a turbine engine Ceramic-matrix composite nozzle assembly for a turbine engine

1987-11-16

1989-08-29

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Radially sliding

415190, F01D 904

Patent

active

048612294

ABSTRACT:
A nozzle assembly for a turbine engine comprises an annular ceramic-matrix composite hub having integral radially outwardly extending vanes, and a pair of annular ceramic-matrix composite shrouds which interlockingly engage and secure the radially outermost ends of the vanes, whereby the hub is peripherally supported. The quasi-isotropic laminate structure of both hub and shroud materials generates like physical properties radially and circumferentially in the hub, and axially and circumferentially in the shrouds. Such quasi-isotropism in turn provides cooperative thermal expansion of the hub and shrouds during engine operation, whereby the radial, axial, and circumferential abutting surfaces of the ends of the vanes increasingly interlockingly engage with the correspondingly opposed surfaces of the shrouds to effect increased structural integrity of the nozzle assembly. The nozzle assembly is supported relative to the metallic engine mount therefor by a plurality of axially extending support beams circumferentially spaced about, and secured to, the periphery of the shrouds. The support beams accommodate the disparate radial thermal expansion between the ceramic and metallic components of the engine.

REFERENCES:
patent: 2605997 (1952-08-01), Lombard et al.
patent: 2894318 (1959-07-01), Bloomberg
patent: 3843279 (1974-10-01), Crossley et al.
patent: 3910716 (1975-10-01), Roughgarden et al.
patent: 4298385 (1981-11-01), Claussen et al.
patent: 4502276 (1985-03-01), Pask
patent: 4643636 (1987-02-01), Libertini et al.

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