Rolls-royce Corporation

Rolls-royce North American Technologies Inc.

Michael S Bell

Jack D Petty, Sr

Michel Shawn Smallwood

Tab Michael Heffernan

Russell N Bennett

Mohan Razdan

A gas turbine engine includes a combustor having a dual-wall impingement convention effusion combustor tile assembly. The dual-wall tile assembly provides a cooling air flow channel and attachments for securing the tile to the cold skin liner of the combustor. Cooling is more efficient in part due to the dual wall construction and in part due to reduced parasitic leakage, and the design is less sensitive to attachment features which operate at lower temperatures.

Dual-wall impingement, convection, effusion combustor tile

A flexible bellows assembly is disclosed for sealing an engine igniter for use with an engine. The bellows assembly includes a mounting arrangement that is operable to be secured to a combustor diffuser instead of the combustor liner. The bellows has a component that impinges upon a surface of the combustor liner so as to form a sealed chamber between a metal diffuser and a ceramic combustion liner. An igniter passes through the sealed chamber and provides ignition to the combustor.

Flexible bellows igniter seal

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Indianapolis, IN, United States of America

Michael S Bell