FORMATION OF AIRCRAFT STRUCTURES BY 3D PRINTING

The subject of the study in the article is the principles of the formation of a constructive-power scheme for the glider of an unmanned aerial vehicle and the possibility of using additive technologies for its creation. The goal is the formation of a structural and power scheme for the glider of an unmanned aerial vehicle of minimum mass, providing the necessary strength parameters and investigating the possibility of 3D printing of the resulting structure. The tasks to be solved are: based on the results of topological optimization in the package of Siemens PLMNX and Solid Works 2018; to choose the constructive-power scheme of the fuselage and the wing; after carrying out optimization, create a three-dimensional assembly of the airframe; perform the manufacture of the necessary aggregates and parts on a 3D printer. The following results are obtained. Topological optimization of the design of the wing and fuselage of an unmanned aerial vehicle using the Siemens PLMNX package and Solid Works 2018 was carried out. In selected CAM/CAD/CAE systems, topological optimization analysis was carried out in terms of speed, quality and processing of the TO results. The optimal design of the fuselage's fuselage structure and wings was developed, and a three-dimensional airframe assembly was created. The possibility of 3D printing of the received structure is investigated. With the help of 3D printer, the basic units of the glider of the unmanned aircraft are made. Using the capabilities of 3D printer along with topological optimization allows creating non-standard designs. When designing thin-walled parts for 3D printing, it is necessary to take into account such factors as insufficient adhesion of the layers. To avoid delamination, it is necessary to strengthen the part, in the case of the wing - add stringer or spar. Topological optimization allows rational use of the material and greatly facilitates the entire structure. Conclusions. It is reported that the use of 3D printer capabilities, together with topological optimization, makes it possible to obtain a glider of an unmanned aerial vehicle of minimum mas