Удосконалення масової ефективності силового корпусу насоса високого тиску

Today, the aerospace industry is on the rise. The continuous development of additive technologies and the use of new, modern materials for 3D printing contribute to this. This development has led to even greater competition between space companies, both public and private. Each of them is trying to present something really new and unique. Our country also has such companies, for example, FlightControl Propulsion. This paper discusses the design of a power case for a turbopump unit of a liquid rocket engine. This unit plays a key role in the operation of the propulsion system, so special attention is paid to the design of such a unit. It is also very important to make such a unit not only durable but also lightweight, since the minimum weight criterion is very important and fundamental in rocketry in general. Such structures must withstand high pressures and remain reliable. Additive manufacturing significantly reduces the time for manufacturing certain parts and assemblies, and also provides almost unlimited possibilities in the geometric shapes of products. In fact, what was difficult or impossible to produce using classical methods is now available. Additive manufacturing already has many manufacturing technologies, and in this paper, we consider a unit manufactured using SLM (Selective Laser Melting) technology. The paper presents a structured algorithm for topological optimization, precisely by steps. The main principle of the topological optimization method SIMP (Solid Isotropic Material with Penalization) is presented. The numerical modeling of the stress-strain state for the variant of the original structure was carried out using the finite element method (FEM) in the CAE (Computer-Aided Engineering) system, a computational finite element mesh was built, and the strength margins of the structure were determined. After the topological optimization, the final design was determined and the stress-strain simulation for the optimized design was again performed. This design of the pump power casing was manufactured and successfully passed all the necessary tests.