Modification of Combustor Stoichiometry Distribution for Reduced NOx Emission From Aircraft Engines

[+] Author and Article Information
G. J. Sturgess, R. G. McKinney, S. A. Morford

United Technology Corporation, Pratt & Whitney, East Hartford, CT 06108

J. Eng. Gas Turbines Power 115(3), 570-580 (Jul 01, 1993) (11 pages) doi:10.1115/1.2906745 History: Received February 06, 1992; Online April 24, 2008


Measurements of the emissions from an experimental engine were analyzed to construct a design chart for the reduction of oxides of nitrogen (NOx ) in conventional combustors. The design chart was used to reconfigure the stoichiometry distribution of the combustor of a production engine so as to reduce NOx while holding the emissions of carbon monoxide, unburned hydrocarbons, and smoke well below existing regulations. Combustion section pressure loss and combustor outlet temperature distributions were substantially unchanged. The modified design was refined with the aid of computational fluid dynamics calculations to optimize the emissions reduction. Worthwhile reductions in NOx were obtained with combustor modifications that are transparent to the engine user.

Copyright © 1993 by The American Society of Mechanical Engineers
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