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Title: Ceramic vane drive joint

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.

Inventors:
 [1]
  1. (Indianapolis, IN)
Issue Date:
OSTI Identifier:
864052
Patent Number(s):
4302149
Assignee:
General Motors Corporation (Detroit, MI) OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
ceramic; vane; drive; joint; variable; geometry; gas; turbine; array; composition; vanes; positioned; actuating; coupled; plurality; circumferentially; spaced; levers; outer; metallic; shaft; slot; bow; tie; configuration; including; flared; segments; center; therebetween; shafts; head; respect; define; clearance; free; expansion; configured; uniformly; distribute; loads; bearing; surfaces; uniformly distribute; bearing surfaces; circumferentially spaced; ceramic composition; drive shaft; gas turbine; bearing surface; variable geometry; vane drive; turbine vane; ceramic vanes; free expansion; metallic vane; ceramic vane; drive shafts; /415/403/

Citation Formats

Smale, Charles H. Ceramic vane drive joint. United States: N. p., 1981. Web.
Smale, Charles H. Ceramic vane drive joint. United States.
Smale, Charles H. Thu . "Ceramic vane drive joint". United States. https://www.osti.gov/servlets/purl/864052.
@article{osti_864052,
title = {Ceramic vane drive joint},
author = {Smale, Charles H.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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