公开(公告)号：WO9412768A3

公开(公告)日：1994-07-21

申请号：PCT/US9310740

申请日：1993-11-04

Applicant: UNITED TECHNOLOGIES CORP

Inventor： HOFF RICHARD W ,  MARTIN DAVID R

IPC: F01D5/18 ,  F01D9/02

CPC classification number: F01D5/187 ,  F05D2260/202 ,  F05D2260/2212 ,  Y02T50/673 ,  Y02T50/676

Abstract: A coolable airfoil having internal cooling passages (82, 84, 74) is disclosed. Various construction details are developed to increase cooling in critical locations of the airfoil. In one embodiment, a pair of side-by-side spanwisely extending passages (82, 84) flow charting air to the tip (flag) passage (74).