The article covers the issues of digital engineering of low flow rate centrifugal compressors. The additive technologies of parts and assembly units manufacture with the use of 3D-printing by metallic and non-metallic materials mastered by the Russian and foreign enterprises in different fields of industry (including aerospace construction and power engineering) have been revealed, the most prospective materials, achievements and trends of development have been analyzed. The experience in application of air and gas centrifugal compressors has been analyzed, the metallic and non-metallic materials used for their manufacture have been studied. The main factors determining the cost indexes and efficiency of centrifugal compressors have been revealed. Optimum structure and parameters of centrifugal compressors have been determined. The engineering and manufacturing methods providing decrease in the material consumption and increase in the strength of compressor parts and assemblies have been proposed.
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