公开(公告)号：CA2456628A1

公开(公告)日：2004-08-05

申请号：CA2456628

申请日：2004-02-02

Applicant: UNITED TECHNOLOGIES CORP

Inventor： CUNHA J FRANK ,  DUBLE P BRYAN

IPC: F01D5/08 ,  F01D5/18 ,  F01D5/30 ,  F02C7/18 ,  F01D25/12

Abstract: An improved cooling design and method for cooling airfoils within a gas turbine engine is provided which includes an embedded microcircuit that traverses a tip between a suction sidewall and a pressure sidewall of the airfoil. The microcircuit includes at least on inlet disposed proximate to the tip and one of the sidewalls for receiving cooling air from an internal cooling cavity of the airfoil and at least outlet disposed proximat e to the tip through which the cooling air ejects into a region outside the airfoil.