Research of gas turbine engine operation in dust-filled atmosphere

The article describes the experimental data on the effect of erosion the turbomachines elements under the influence solids on the engine performance. The analysis was performed for the generator of compressed air for the aggregate of cleaning pipelines and the gas jet treatment plants temporary technological railways. The aggregate of cleaning pipelines was operated under conditions of high concentrations of dust in the air - in the semidesert. Both plants are based on the converted aircraft twin-shaft turbojet engines. According to the model of erosive wear was set, that the depth of erosion depends on the dimension of the engines. Also shown is the ability to detect impending failure of the engine working in a dusty atmosphere, based on trend analysis of its parameters using various statistical smoothing options: simple linear trend, exponential trend, damped trend. Revealed that the first of the considered parameters controlled workflow approach to engine failure reacts high pressure rotor speed. Timely detection of trends in parameters due to the development of a number of irreversible processes will predict current and stable operation of the critical state of gas turbine engines, the corresponding loss of gasdynamic stability of the engine, so as to use the work on modes near with the marginal stability of the compressor is unacceptable.