Vekilov S. Enhancement of hydraulic characteristics of ducts of liquid rocket engines manufactured using additive technologies

Українська версія

Thesis for the degree of Doctor of Philosophy (PhD)

State registration number

0824U002202

Applicant for

Specialization

  • 134 - Авіаційна та ракетно-космічна техніка

Specialized Academic Board

ДФ 08.051.090 ID 6082 Векілов С.Ш.

Oles Honchar Dnipro National University

Essay

Research Report. 207 pages, 103 figures, 74 tables, 102 sources. Research Object: Hydraulic processes in LPRE ducts manufactured using additive technologies. The aim of the dissertation research is to develop an effective methodology for designing liquid rocket engine chambers with enhanced hydraulic characteristics based on identified dependencies of the flow coefficient on a complex of geometric parameters of centrifugal injectors manufactured using additive technologies. Research Methods: experimental research, comparison of experimental data, critical analysis, regression analysis, metallographic analysis. Research Results: Based on the conducted experimental studies, an analysis of the change in the flow coefficient of centrifugal injectors manufactured using L-PBF technology was carried out. A dependency of the flow coefficient change on a complex of geometric parameters was proposed, allowing to predict the hydraulic characteristics of centrifugal injectors at the early stages of design. Based on the proposed dependency, a methodology for designing centrifugal injectors manufactured using L-PBF technology was developed. Experimental confirmation of the increased specific characteristics of liquid rocket engine chambers designed based on mixing systems manufactured using additive technologies was obtained. The change in surface roughness of products manufactured using L-PBF technology depending on the inclination angle relative to the production process direction was studied. Based on regression analysis of metallographic examination data of experimental samples, empirical dependencies were proposed, allowing to predict surface roughness parameters of additive manufacturing products at the early stages of design. The results of the work were tested at the enterprises LLC "Dnipro Aerospace" and LLC "FLIGHT CONTROL". Field of Application - Mechanical Engineering.

Research papers

Vekilov, S., Lipovskyi, V., & Marchan, R. (2021). Features of the adaptation of 3D printed regenerative cooling channels of the LPRE throat inserts. System Design and Analysis of Aerospace Technique Characteristics, 29(2), 62–72. https://doi.org/10.15421/472112

Vekilov, S., Lipovskyi, V., Marchan, R., & Bondarenko, O. (2021). Distinctive features of SLM technology application for manufacturing of LPRE components. Journal of Rocket-Space Technology, 29(4), 112–123. https://doi.org/10.15421/452112

Bondarenko, O., Vekilov, S., Tkachov, Y., & Marchan, R. (2021). Topology optimization features of liquid-propellant rocket engine power elements manufactured by additive technologies. Journal of Rocket-Space Technology, 29(4), 112–123. https://doi.org/10.15421/452112

Vekilov, S., & Lipovskyi, V. (2022). Comparison and analysis between conventional and additive manufacturing technologies of LPRE. System Design and Analysis of Aerospace Technique Characteristics, 31(2), 14–25. https://doi.org/10.15421/472210

Vekilov, S., & Lipovskyi, V. (2023). Overview on the design variants for organization of the liquid film cooling in LPRE combustion chambers. Journal of Rocket-Space Technology, 31(4), 9–19. https://doi.org/10.15421/452302

Vekilov, S., Lipovskyi, V., Marchan, R., Lohvynenko, A., & Pustovoy, R. (2023). Teoretical-experimental comparison of the models of additively manufactured swirl injectors based on the hydraulic testing results. Journal of Rocket-Space Technology, 31(4), 148–158. https://doi.org/10.15421/452319

Vekilov, S., & Lipovskyi, V. (2024). Features of the development of additive manufacturing methods in application to liquid propellant rocket engines. Journal of Rocket-Space Technology, 32(4), 23–38.

Векілов, С. Ш., Ліповський, В. І., Марчан, Р. А., Логвиненко, А. О., & Пустовий, Р. О. (2023). Експериментальна оцінка методик розрахунку відцентрових розпилюючих пристроїв, виготовлених за допомогою методів адитивних технологій. У ХXV Міжнародна молодіжна науково-практична конференція «Людина і космос» (с. 41–43). https://spacehuman.org/uploads/source/doc/sbornik2023.pdf

Marchan, R., Oleshchenko, A., Vekilov, S., Arsenuk, M., & Bobrov, O. (б. д.). 3D printed acoustic igniter of oxygen-kerosene mixtures for aerospace applications. У 8th european conference for aeronautics and space sciences (eucass). https://doi.org/10.13009/EUCASS2019-238

Vekilov, S., & Lipovskyi, V. (б. д.). Distinctive features of SLM technology application for manufacturing of LPRE components. У ХXIІІ Міжнародна молодіжна науково-практична конференція «Людина і космос» (с. 110). https://spacehuman.org/_files/doc/sbornik2021.pdf

Vekilov, S., & Lipovskyi, V. (2022). An overview on the design variants which realize inner film cooling of the LPRE combustion chambers. У ХXIV Міжнародна молодіжна науково-практична конференція «Людина і космос» (с. 124). НЦАОМ. https://spacehuman.org/_files/doc/sbornik2022.pdf

Vekilov, S., Lipovskyi, V., Marchan, R., Lohvynenko, A., & Pustovyi, R. (2023). Experimental investigation of the parameters of additively manufactured coaxial swirl injectors. У Виклики та проблеми сучасної науки (с. 108–117). https://files.fti.dp.ua/cims/cims-vol-1

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