公开(公告)号：US11111809B2

公开(公告)日：2021-09-07

申请号：US15979085

申请日：2018-05-14

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Neil Terwilliger ,  Christopher J. Hanlon ,  Patrick D Couture ,  Coy Bruce Wood

IPC: F01D11/24 ,  F01D25/10 ,  F01D11/18

Abstract: A clearance control system for a gas turbine engine may comprise a rotor blade, an outer structure disposed radially outward from the rotor blade, and a heating element configured to cause the outer structure to be heated in response to electric current being supplied to the heating element, wherein a gap between the rotor blade and the outer structure is at least one of increased, decreased, and maintained in response to the outer structure being heated.

公开(公告)号：US09719364B2

公开(公告)日：2017-08-01

申请号：US14613692

申请日：2015-02-04

Applicant: UNITED TECHNOLOGIES CORPORATION

Inventor： Graham Ryan Philbrick ,  Patrick D Couture

IPC: B24B21/02 ,  B23B41/00 ,  F01D11/08 ,  B24B55/10 ,  B23Q11/00 ,  F01D25/24 ,  F01D25/12 ,  F01D9/02 ,  B24B19/26 ,  B24B23/08 ,  F01D5/00 ,  F01D11/10

CPC classification number: F01D11/08 ,  B23Q11/005 ,  B24B19/26 ,  B24B23/08 ,  B24B55/10 ,  F01D5/005 ,  F01D9/02 ,  F01D11/10 ,  F01D25/12 ,  F01D25/24 ,  F01D25/246 ,  F05D2220/32 ,  F05D2230/10 ,  F05D2230/18 ,  F05D2240/55

Abstract: A process for machining a turbine engine blade outer air seal in situ, the process comprising replacing a blade with a cutting tool assembly proximate a blade outer air seal, wherein the blade outer air seal is assembled in a gas turbine engine case. The process includes coupling a blower to the blade outer air seal. The blade outer air seal comprises at least one flow path. The process includes creating a purge air stream with the blower through the blade outer air seal. The process includes machining the blade outer air seal, wherein particulate is formed from the machining. The process includes preventing the particulate from blocking the at least one flow path of the blade outer air seal.