United Technologies Corporation

Pw Power Systems, Inc.

Christopher William Moore

Michael G McCaffrey

Paul M Lutjen

Joseph T Caprario

David Richard Griffin

John J Korzendorfer

Fabian D Betancourt

Charles C Wu

James P Chrisikos

Henry K Webster

Andrew P Boursy

Ronald R Gagnon, Jr

Fernando K Grant

Roger E Paolillo

George E Allen

Alexander Sankovich

David Griffin

A gas turbine engine assembly includes a shield that has a first portion and a second portion. The first portion extends radially from an axial end portion of the shield and includes a blade outer air seal contact surface. The second portion extends axially from a radially outer end of the first portion and includes a vane contact surface.

Seal for a gas turbine engine

A power turbine section for a gas turbine engine includes a heat shield assembly mounted to a bearing support, the heat shield assembly forms an outer diameter directed toward an inner vane platform of the power turbine vane array.

Power turbine heat shield architecture

A secondary flow system provides a compact injector cooling structure for turbine blades which includes an Angled On-board Injector (AOBI) that locates a metering throat at an inward angle relative to an engine centerline. The AOBI positions the metering throat at the inward angle relative to an engine centerline to communicate cooling airflow to an angled annular section of a turbine rotor disk coverplate.

Angled on-board injector

A pump/flow guide is positioned in a gas turbine engine and attached to a transition duct to face a turbine disk. The pump/flow guide provides a smooth path for guiding purge flow to resist the ingestion of hot gas. One leg of the pump/flow guide extends radially outwardly and contacts the radially inner section of the transition duct that forms a 'fish mouth.' Spaced tabs on the pump/flow guide receive bolts to secure the pump/flow guide to the transition duct. The pump/flow guide thus provides a relatively smooth flow passage for purge gas flow.

Gas turbine engine with purge air pump and guide

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Ellington, CT, United States of America

Christopher William Moore