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Information × Registration Number 0216U007071, 0111U001434 , R & D reports Title Development of theoretical bases of interaction of oscillating process in hydraulic system with constructional elements of different objects and inverse solutions of gas dynamics of transonic compressor stage of gas-turbine aero-engine popup.stage_title Head Kvasha Yuri Oleksandrovych, Registration Date 24-03-2016 Organization The Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine popup.description2 The research subjects are dynamic processes in liquid launch rockets with cavitating pumps and gas dynamic processes in compressor blade rims for aircraft gas-turbine engines. The research objectives are to develop scientific and methodical support for theoretical analysis of regularities of dynamic processes in hydraulic systems with cavitating elements and systems of liquid launch vehicles, to create methods of a numerical solution of inverse problems in gas dynamics of transonic compressors stages for aircraft gas-turbine engines. Methods for mathematical modeling, mathematical physics, computational fluid dynamics, a theory of oscillations, a theory of automatic control systems, information and analysis methods are used in the research. The results obtained. Mathematical modeling the combined longitudinal and flexural oscillation of the pipeline structure and oscillation of a fluid through hydraulic systems of liquid rocket propulsion (LRP) with cavitating pumps is performed. Regularities of such oscillation are studied. Scientific and methodical support for a theoretical analysis of regularities of dynamic processes through systems of liquid launch vehicles (LV) due to interactions between the LV design and the cruise LRP in active legs of the flight is developed. The ITM's theory of the longitudinal oscillation of liquid LVs is in progress using the developed scientific and methodical support. Techniques for numerical solutions of inverse problems in the gas dynamics of transonic compressor stages for aircraft gas-turbine engines (GTE) are developed. Inverse problems in the gas dynamics of straight and annular compressor cascades, axial, diagonal, and centrifugal impellers for compressor stages of aircraft LRPs are numerically solved. A numerical simulation of hydraulic and dynamic processes through hydraulic systems with cavitating local drag (Venturi tube, disc diaphragm) is carried out and the main regularities of those processes are studied. The ITM's theory of high-frequency and high-amplitude fluid pressure fluctuations through such systems is in progress. Scientific and methodical developments and the research results are employed by Ukrainian aerospace enterprises for retrofitting liquid LVs and designing compressor stages for aircraft LRPs. Applications: fluid mechanics, rocket and aircraft engine manufacturing, rocket production. Product Description popup.authors Башлій І. Д. Болотова Н. В. Григор'єв Ю. Є. Денко С. М. Довготько М. І. Долгополов С. І. Зіневич Н. А. Кваша Ю. О Коваль Г. Г. Мелашич С. В. Ніколаєв О. Д. Пилипенко В. В. Сухіна І. В. Сухонос І. В. Хоряк Н. В. Ямполь Є. Ю. popup.nrat_date 2020-04-02 Close