Annotation: The article presents the experience of the first liquid rocket engine parts developing and manufacturing by means of additive technologies. Application of these technologies imposes new constraints on parts configuration, which are necessary to be considered by a designer. At the same time, application of additive technologies provides new opportunities to a developer, which are absent at traditional method of manufacturing. The article presents the results of manufacturing in Yuzhnoye SDO the first commodity parts, manufactured by additive technologies – selective laser melting, using SLM280HL 3D- printer with building volume dimensions of 280x280x350 mm. The obtained experience in the first liquid rocket engine parts developing and manufacturing by means of additive technologies has shown, that application of this technology allows manufacturing the parts having high characteristics at minimum terms and cost of preproduction, however for all potential opportunities realization, especially at implementation phase, it is necessary to change designing philosophy, which will require more working hours at designing. The obtained first results conclusively prove efficiency and expediency of additive technologies application at certain segment of liquid rocket engine parts manufacturing, at that it is clear, that manufacturing equipment improvement and design methods evolution will lead to steady expansion of this segment.

Annotation: The process of introducing new technologies at Yuzhnoye SDO requires major changes of aerospace products designing methods and project management methods, which allows realizing new opportunities, reducing manufacturing expenses with simultaneous increase of products quality. New software products are presented directed at solving the problems identified when using additive technologies at Yuzhnoye SDO. Such as Autodesk Netfabb, AM Process Simulation, ESI Additive Manufacturing and others that allow optimizing the model for additive technologies through the change of material structure, taking into account and compensation of heat setting during printing propose the tools for creating bionic design. Creation of new technologies of producing cooled nozzle block of LRE chamber without soldering became possible due to integrated approach, with optimal combination of already existing technical solutions with principally new ones, such as laser welding and surfacing. The cost analysis is considered as the most effective optimization method at selection of optimal design and manufacturing technology for its possible implementation at the company. The personnel problem, the issues of quality improvement and labor productivity increase in all production phases are foundational to reduce manufacturing cost.