US2008080974A1PendingUtilityA1

Annular gas turbine engine case and method of manufacturing

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Assignee: SAVOIE JEANPriority: Oct 2, 2006Filed: Oct 2, 2006Published: Apr 3, 2008
Est. expiryOct 2, 2026(~0.2 yrs left)· nominal 20-yr term from priority
Inventors:Jean-Marc SavoieDaniel P. Turner
F05D 2230/237F05D 2230/26F05D 2230/40F01D 25/24C23C 24/10F05D 2230/41C23C 30/00F05D 2230/30Y02T50/60
11
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Claims

Abstract

The method comprises flowforming at least one section of a preform and then adding at least one additional element on the at least one flowformed section.

Claims

exact text as granted — not AI-modified
1 . A method of manufacturing an annular gas turbine engine case comprising:
 flowforming at least one section of the preform; and   forming at least one additional element on the at least one flowformed section by depositing material onto the flowformed section.   
   
   
       2 . The method as defined in  claim 1 , wherein the depositing is achieved by laser deposition and powder. 
   
   
       3 . The method as defined in  claim 1 , further comprising:
 machining the at least one additional element formed by disposition.   
   
   
       4 . The method as defined in  claim 1 , wherein the annular gas turbine engine case is a gas generator case. 
   
   
       5 . The method as defined in  claim 1 , wherein the annular gas turbine engine case is a fan case. 
   
   
       6 . A method of manufacturing an annular gas turbine engine case comprising:
 flowforming at least one section of the preform; and then   adding at least one additional element on the at least one flowformed section by brazing.   
   
   
       7 . The method as defined in  claim 6 , further comprising:
 machining the at least one additional element.   
   
   
       8 . The method as defined in  claim 6 , wherein the annular gas turbine engine case is a gas generator case. 
   
   
       9 . The method as defined in  claim 6 , wherein the annular gas turbine engine case is a fan case. 
   
   
       10 . An annular gas turbine engine case, comprising:
 at least one flowformed section; and   at least one additional element added to the at least one section by laser deposition.   
   
   
       11 . An annular gas turbine engine case, comprising:
 at least one flowformed section; and   at least one additional element added to the at least one section by brazing.

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