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Information × Registration Number 0211U006777, 0106U001725 , R & D reports Title Mathematical Modelling Dynamic Processes in Liquid Rockets with Cavitating Pumps, Driils with Cavitation Hydraulic Vibration and Solution of Inverse Problem of Blade Rims for Compressors of Aircraft Gas-Turbine Engines popup.stage_title Head Pilipenko Victor Vasilyovich, Registration Date 28-03-2011 Organization Institute of Technical Mechanics of NASU and NSAU popup.description2 The research оbjects are dynamic processes in liquid rockets with cavitating pumps, drills with the cavitating hydrovibrator and gas dynamic processes in compressor blade rows of aircraft gas turbine engines. The research goal is to develop approaches to solutions of inverse problems of the gas dynamics of the rotating blade systems and the theory of oscillations of complicated hydromechanical systems, including ones with the cavitating elements. The research methods are mathematical modeling, information and analytical methods. This research yielded the following new results. Approaches to solutions of inverse problems of the gas dynamics of blade rows compressor stages of aircraft gas turbine engines (GTE) are developed. Flows of viscous fluids and gases in the complicated-form regions are mathematically modeled using unstructured computational grids. The theory of high-frequency high-amplitude oscillations of fluid pressure in hydraulic systems with a local hydraulic cavitation resistance created at ITM, NASU&NSAU, is developed based on mathematical models of this process of various level (at one-dimensional and two-dimensional approximation). Dynamic processes in a drill, including the cavitation hydrovibrator, created at ITM, NASU&NSAU are mathematically modeled. The theory of the longitudinal stability of liquid rockets created at ITM, NASU&NSAU is developed on the basic of the following scientific and methodic developments: an experimental and calculated nonlinear hydraulic model of the dynamics of the cavitation inducer-centrifugal pumps of liquid rocket propulsion systems (LRPS); the technique for calculating dynamic characteristics of 3D curved pipe hydraulic systems, taking account the effects of hydroelastic interaction; a nonlinear mathematical model of the dynamics the body of liquid rockets; a technique for determining dynamic loading of existing original structures of space stages of multistage liquid rockets and spacecraft at the active leg of the rocket flight trajectory using the finite element method. Scientific and methodical developments and the results of studies are used to design compressor stages of aircraft gas turbine engines, to improve liquid rockets, to design and create advanced original structures of the upper (space) stages of liquid rockets. The results obtained allow to reduce significantly the financial costs of experimental investigations and the development time of these products for aeronautical engineering and rocket and space systems. Applications: fluid mechanics, rocket and aircraft engine manufacturing and rocket manufacturing. Product Description popup.authors Башлій І. Д. Болотова Н. В. Григор'єв Ю. Є. Довготько М. І. Долгополов С. І. Кваша Ю. О Коваль Г. Г. Манько І. К. Мелашич С. В. Ніколаєв О. Д. Пилипенко В. В. Сухіна І. В. Хоряк Н. В. Ямполь Є. Ю. popup.nrat_date 2020-04-02 Close