W501D5/D5A DF42 combustion system
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United States of America
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Apr 20, 2021
Grant Date -
Jun 13, 2019
app pub date -
Feb 20, 2019
filing date -
Feb 20, 2019
priority date (Note) -
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Abstract
An improved combustion section for a gas turbine engine is disclosed. A fuel nozzle includes new features which provide improved injection patterns of oil fuel and cooling water, resulting in better control of combustion gas temperature and NOx emissions, and eliminated impingement of cooling water on walls of the combustor. A new combustor includes a plate-fin design which provides improved cooling, while the combustor also makes more efficient use of available cooling air and has an improved component life. A new transition component has a smoother shape which reduces stagnation of combustion gas flow and impingement of combustion gas on transition component walls, improved materials and localized thickness increases for better durability, and improved cooling features for more efficient usage of cooling air.
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