Multinozzle Combustion Chamber of Aviation Gas Turbine Engines as a Basis of Environmental Safety. Review

Abstract

Environmental safety of aviation engines is a very important problem for designers. The importance of this problem increases with the aviation engine thrust, because of the increase in such thermodynamic parameters as the temperature and pressure in the combustion chamber. In this case, the rise of temperature in the combustion zone results in the formation of NO x. Using the multinozzle fuel burning mode in the combustion chamber will make it possible to decrease the formation of harmful substances signifi cantly. Multinozzle combustion chambers of aviation gas turbine engines designed by the JSC "Kuznetsov" (Samara City, Russian Federation) in the course of the few last decades comply with the current requirements imposed on emissions. Comparative ecological characteristics of widespread aviation engines are presented in the article. The results of procedures of environmental testing of low-emission multinozzle combustion chambers for aviation gas turbine engines are described. It is shown that a multinozzle combustion chamber provides low NO x pollutant emissions and high reliability of aviation engine operation in diff erent operating conditions.