Patent ID: 9260974
Filing Date: 2016-02-16
CPC Classification: F01D,F02C,F05D

Claim Text:
1. An active clearance control ejector system for a gas turbine engine, the active clearance control ejector system comprising: an air ejector; an entrance pipe arranged to supply compressor bleed air to the air ejector; an inlet duct arranged to supply fan bypass air to the air ejector; and a supply pipe arranged to receive ejector outlet air from the air ejector and supply the ejector outlet air to an active clearance control system, the ejector outlet air comprising a mixture of the compressor bleed air and the fan bypass air; and a relief valve disposed upon the supply pipe and arranged to discharge ejector outlet air to an under cowl region; wherein the air ejector comprises a venturi arranged to conduct the compressor bleed air therethrough, thereby drawing the fan bypass air into the air ejector.