公开(公告)号：SG11201404663RA

公开(公告)日：2014-10-30

申请号：SG11201404663R

申请日：2013-02-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PARKOS JR JOSEPH ,  HANSEN JAMES O ,  HERTEL CHRISTOPHER A ,  MURPHY ANDREW J ,  PHILLIPS ASHLEY P ,  ABRAHAM JAY T

IPC: F01D5/14 ,  F01D25/00 ,  F02C7/00

公开(公告)号：EP2812538A4

公开(公告)日：2015-12-23

申请号：EP13746743

申请日：2013-02-06

Applicant: UNITED TECHNOLOGIES CORP

Inventor： PARKOS JR JOSEPH ,  HANSEN JAMES O ,  HERTEL CHRISTOPHER A ,  MURPHY ANDREW J ,  PHILLIPS ASHLEY P ,  ABRAHAM JAY T

IPC: F01D5/14 ,  C25D1/00 ,  C25D1/02 ,  C25D1/10 ,  F01D25/00 ,  F02C7/00 ,  F04D29/32

CPC classification number: C25D1/00 ,  C25D1/02 ,  F01D5/147 ,  F04D29/324 ,  F05D2230/30 ,  F05D2230/90 ,  F05D2240/303 ,  F05D2300/603

Abstract: An electroformed sheath for protecting an airfoil includes a sheath body and a mandrel insert is provided. The sheath body includes a leading edge. The sheath body includes a pressure side wall and an opposed suction side wall, which side walls meet at the leading edge and extend away from the leading edge to define a cavity between the side walls. The sheath body includes a head section between the leading edge and the cavity. The mandrel insert is positioned between the pressure side and suction side walls, and includes a generally wedge-shaped geometry. A method for protecting an airfoil includes: 1) securing a mandrel insert to a mandrel; 2) electroplating a sheath body onto the mandrel and the mandrel insert; 3) removing the mandrel from the sheath body so that a sheath cavity is defined within the sheath body; and 4) securing the airfoil within the sheath cavity.