Airfoil with baffle having flange ring affixed to platform

Abstract

An airfoil includes an airfoil section that has an airfoil wall that defines leading and trailing ends and first and second sides that join the leading and trailing ends. The first and second sides span in a longitudinal direction between first and second ends. The airfoil wall circumscribes an internal core cavity. A platform is attached with the first end of the airfoil wall. The platform includes an opening that opens into the internal core cavity and a land region that circumscribes the opening. A baffle is formed of a tube and an attachment portion. The tube extends in the internal core cavity and the attachment portion has a flange ring that is affixed to the platform at the land region.

What is claimed is: 
     
         1 . An airfoil comprising:
 an airfoil section having an airfoil wall defining leading and trailing ends and first and second sides joining the leading and trailing ends, the first and second sides spanning in a longitudinal direction between first and second ends, the airfoil wall circumscribing an internal core cavity;   a platform attached with the first end of the airfoil wall, the platform including an opening that opens into the internal core cavity and a land region circumscribing the opening; and   a baffle formed of a tube and an attachment portion, the tube extending in the internal core cavity and the attachment portion having a flange ring affixed to the platform at the land region.   
     
     
         2 . The airfoil as recited in  claim 1 , wherein the tube and the attachment portion are connected to each other at a weld joint. 
     
     
         3 . The airfoil as recited in  claim 2 , wherein the tube and the attachment portion overlap at the weld joint. 
     
     
         4 . The airfoil as recited in  claim 2 , wherein the weld joint is continuous around the tube. 
     
     
         5 . The airfoil as recited in  claim 2 , wherein the attachment portion includes a tapered neck portion, and the tapered neck portion is connected to the tube at the weld joint. 
     
     
         6 . The airfoil as recited in  claim 5 , wherein the tube and the tapered neck portion overlap at the weld joint. 
     
     
         7 . The airfoil as recited in  claim 6 , wherein the tube defines a first tube end and a second tube end, the first tube end is connected in the weld joint, and further comprising a cover connected to the second tube end. 
     
     
         8 . The airfoil as recited in  claim 1 , wherein the flange ring has four perimeter apexes. 
     
     
         9 . The airfoil as recited in  claim 8 , wherein the attachment portion includes a tapered neck portion, and the tapered neck portion and the tube are connected to each other at a weld joint. 
     
     
         10 . A gas turbine engine comprising:
 a compressor section;   a combustor in fluid communication with the compressor section; and   a turbine section in fluid communication with the combustor,   the turbine section having a turbine airfoil that includes
 an airfoil section having an airfoil wall defining leading and trailing ends and first and second sides joining the leading and trailing ends, the first and second sides spanning in a longitudinal direction between first and second ends, the airfoil wall circumscribing an internal core cavity, 
 a platform attached with the first end of the airfoil wall, the platform including an opening that opens into the internal core cavity and a land region circumscribing the opening, and 
 a baffle formed of a tube and a continuous flange, the tube extending in the internal core cavity and the continuous flange being affixed to the platform at the land region.