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Title: Metallic nut for use with ceramic threads

A nozzle guide vane assembly has ceramic components therein having a conventional thread thereon including a preestablished pitch and having a preestablished rate of thermal expansion. The nozzle guide vane assembly has a metallic components therein having a preestablished rate of thermal expansion being greater that the rate of thermal expansion of the ceramic components is positioned in a gas turbine engine. The metallic component, a nut, has a thread therein including a plurality of crests being spaced on a pitch equal to that of the ceramic component and has a pair of contacting surfaces extending from the plurality of crests. A notch spirally extends intermediate adjacent ones of the plurality of crests and has a preestablished depth which is at least twice the size of the conventional pitch. Furthermore, the pair of contacting surfaces are in contact with only a portion of the threaded surface of the ceramic components.
 [1];  [2]
  1. (San Diego, CA)
  2. (Maitland, FL)
Issue Date:
OSTI Identifier:
Solar Turbines Incorporated (San Diego, CA) OSTI
Patent Number(s):
US 5538380
Contract Number:
Research Org:
Country of Publication:
United States
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