Designers of the Kazan Motor-Building Production Association (KMPO) have developed a two-zone combustion chamber for a gas turbine engine. The scheme is designed to reduce emissions and stabilize combustion when operating on gaseous fuel.
The key feature of the design by engineers Andrey Baklanov and Andrey Markushin is the division of the combustion process into two zones: a pilot zone and a main zone. This solution allows for flame stabilization first, and then efficient development of the combustion process in the main part of the chamber.
The approach improves the quality of fuel-air mixing and reduces the likelihood of flameout when the engine operating modes change.
The documentation for the development also states a reduction in temperature non-uniformity and an increase in combustion completeness, which directly affects the efficiency and service life of the power plant.
The flame tube is made of connected annular elements with holes for cooling air supply. The use of thermal barrier coatings reduces the thermal load on the chamber walls.