Industrial Automatic Control Systems and Controllers Annotation << Back Improving the Quality of Assessment of the Resource State of Flame Tubes Through Continuous Monitoring of Transient Processes in the Combustion Chamber of an Aircraft Gas Turbine Engine Shilin S.A. One of the most critical design elements of the combustion chamber of a gas turbine engine, which significantly influences its service life, is the flame tube. Forced resource consumption of this unit is usually observed in the event of a sharp decrease in the productivity of an axial compressor. This phenomenon occurs, in particular, when a rotating stall forms in the flow path, caused by external disturbing factors (for example, strong gusts of wind). As a result of a reduction in the volume of air entering the combustion chamber, destabilization of the gas-air flow occurs, partial destruction of the cooling air layer, which leads to to “sticking” of the working fl uid to the walls of the flame tube, and, as a result, warping and burnout of its body. In order to determine the amount of service life of the combustion chamber at any point in the operating cycle, continuous monitoring of the nature of the gas-air flow in the flame tube is proposed. To solve the problem, it seems appropriate to use a dynamic model based on transfer functions. The processes occurring in the combustion chamber are described by standard typical links that simulate the reaction of the working fluid to a disturbing influence of arbitrary shape. Based on the duration of the transition process, one can judge the period of forced consumption of the flame tube resource. Keywords: flame tube, gas-air flow, flow pattern, disturbing influence, resource consumption. DOI: 10.25791/asu.11.2025.1626 Pp. 48-54.