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Abstract. The article investigates the numeric simulation of two-way aeroelastic processes applied to the experimental phase of a compressor; physical, mathematical, rigid and grid models of the system "gas -rotorstator" have been worked out; 2 FSI (two-way Fluid-Structure Interaction) calculations have been performed on the evaluation of the interaction between a gas-dynamic flow and a deformable rotor blade; the effect of voltage gain is found in a blade, in an aeroelastic state compared with the transient calculations of a stress-strain state. Keywords: interdisciplinary calculation, experimental compressor stage IntroductionDuring the operation of compressors diverse vibrations may come out together with increased dynamic loads on the bearings; they can initiate the decrease of operating characteristics [1].Blade machines produce vibrations for different reasons. For example, there might be technological imbalances of shafts and other rotation parts, or imbalances by assembly -all lead to vibrations. It's also necessary to consider vibration processes in magnetic suspensions. Vibration processes in labyrinth seals and in a gas-dynamic tracks are also taken as key vibration factors [2,3,4,5].Moreover, the analysis of vibration and aerodynamics is carried out separately due to the complexity of the calculations. Nowadays the vibrations in compressors cannot be predicted as essential factors and are not taken into account.

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