Rolls-Royce Corporation

Rolls-Royce North American Technologies Inc.

Mohan Razdan

Michel Shawn Smallwood

Jack D Petty, Sr

Tab Michael Heffernan

Keith McCormick

Albert J Verdouw

Duane Smith

Andre W Marshall

Michael S Bell

Jushan Chin

Nader K Rizk

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 fuel-air premixing module is designed to reduce emissions from a gas turbine engine. In one form, the premixing module includes a central pilot premixer module with a main premixer module positioned thereround. Each of the portions of the fuel-air premixing module include an axial inflow swirler with a plurality of fixed swirler vanes. Fuel is injected into the main premixer module between the swirler vanes of the axial inflow swirler and at an acute angle relative to the centerline of the premixing module.

Fuel premixing module for gas turbine engine combustor

A combustion system including a plurality of axially staged tubular premixers to control emissions and minimize combustion noise. The combustion system includes a radial inflow premixer that delivers the combustion mixture across a contoured dome into the combustion chamber. The axially staged premixers having a twist mixing apparatus to rotate the fluid flow and cause improved mixing without causing flow recirculation that could lead to pre-ignition or flashback.

Dry low combustion system with means for eliminating combustion noise

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Indianapolis, IN, United States of America

Mohan Razdan