Ceramic vane drive joint

Details Ceramic vane drive joint Ceramic vane drive joint

1980-02-19

1981-11-24

Smith, Leonard E.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

403 30, 415160, 415164, F01D 1716

Patent

active

043021492

ABSTRACT:
A variable geometry gas turbine has an array of ceramic composition vanes positioned by an actuating ring coupled through a plurality of circumferentially spaced turbine vane levers to the outer end of a metallic vane drive shaft at each of the ceramic vanes. Each of the ceramic vanes has an end slot of bow tie configuration including flared end segments and a center slot therebetween. Each of the vane drive shafts has a cross head with ends thereof spaced with respect to the sides of the end slot to define clearance for free expansion of the cross head with respect to the vane and the cross head being configured to uniformly distribute drive loads across bearing surfaces of the vane slot.

REFERENCES:
patent: 2809803 (1957-10-01), Featonby
patent: 2996279 (1961-08-01), Lorett et al.
patent: 3392958 (1968-07-01), Penny et al.
patent: 3910716 (1975-10-01), Roughgarden et al.
patent: 3981140 (1976-09-01), Lunsford et al.

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