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The article discusses the possibility of using virtual reality technology to solve the problems of the educational process. Using the VRChat platform, a virtual room with additional features has been created, which is proposed to be used for conducting various types of classes (lectures, seminars, etc.)

The article discusses an algorithmic method for increasing the strength characteristics of products produced by additive manufacturing technologies through thickening the internal grid structure of filling the model when transferring to the control code during the operation of the slicer program. It shows the internal filling using the Voronoi grid and the "Exhaustion Algorithm" for the implementation of the internal filling of the threedimensional model in the process of the slicer program.

The article proposes a method for the interrelated determination of the speed coefficients and optimal geometry of a radial-axial centripetal turbine flow range. The method is based on a model of gas flow at an average diameter in a one-dimensional quasi-stationary approximation, supplemented with ratios to determine the optimal operating parameters of the turbine.

The existing methods of design and calculating the gas-dynamic characteristics of turbo-machines do not allow an accurate computation of parameters of a turbo compressor unit as part of a compound internal-combustion engine. The evaluation of a new design and estimation method for the blading section of the turbine of the turbocharged engine was carried out in this paper. The developed technology was used to design impellers for radial-axial turbines of a turbocharged engine operating in various modes. The features of these turbines are presented in the steady and unsteady stream. As a result of the application of the new design and calculating technology, the following data was obtained: the parameters of the turbine design mode as part of a turbocharged engine; the blading section of the turbine TKR-14 of the turbocharger. As a part of a turbocharged engine, this blading section will allow the unsteady action from the piston part to operate more efficiently than the standard turbine of the 6 CHN 18/22 (Russian Marine Diesel) engine. The computation of turbine performance characteristics in a steady stream showed that a decrease in the geometric dimensions at the inlet and outlet of the impeller leads to a decrease in the efficiency of the turbine and an increase in its effective power. The computation of performance characteristics of a turbine as part of the turbocharged engine showed that reducing the height of the impeller blades causes scavenging duration reduction, an increase in a pressure drop on scavenging, an increase in pressure in the exhaust pipeline, an increase in the efficiency of the turbine and its effective power. Comparison of these characteristics with experimental data proves the adequacy of the applied technology.