Abstract
The work provides an analysis of existing types of mandrels with an explanation of their application features, advantages, and disadvantages. In the technology of winding, the mandrel plays a crucial role in determining the method of obtaining products from polymer composite materials. Various types of non-detachable and detachable mandrels are considered. Their advantages, disadvantages, and limitations for their use are discussed depending on the dimensions of the manufactured product, its configuration, weight, winding technology, and production type. General requirements for mandrels are established regardless of the type of manufactured product. The article recommends using additive technologies for the production of prototype mandrel samples, which are used for both assembly of mandrel assemblies and winding technologies with minimal cost of funds, resources, and materials. The methodology of manufacturing a mandrel using the CoPET method of 3D printing is provided. The results of the conducted analysis are presented in the form of a table of technical and economic indicators for the production of mandrel types for winding solid-fuel rocket engine cases.
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