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Information × Registration Number 0217U004286, 0115U000679 , R & D reports Title Numerical analysis of liquid rocket engines turbopumps rotordynamics with taking into account of bearings and seals dynamic characteristics popup.stage_title Head Martsynkovskyy V.A., Registration Date 30-01-2017 Organization Sumy State University popup.description2 The purpose of research: the creation of new designs of seals-bearings and methods of numerical analysis of the dynamic characteristics of the turbopump unit rotor to improve energy efficiency and vibroreliability of liquid rocket engines. The object of research: the dynamics of the rotor-bearing-seal-housing turbopump assembly of liquid rocket engine. Subject of research: numerical (computational) and analytical models of hydrodynamic processes in the seals, bearings and axial balancing devices, the definition of the causes of rotor dynamic instability in the contactless seals and bearings with taking into account of force and thermal deformations of the housing and shaft. The main tasks: development of methods for the analysis of the joint radial, angular and axial vibrations, the methods of the critical frequency calculation, the boundaries of motion stability, amplitude and phase frequency characteristics of a turbo pump rotors with taking into account of annular seals and automatic axial balancing devices. Computer modeling using computational fluid dynamics methods of annular seals-bearings sealing mechanism, obtaining approximating dependences between the main geometric parameters and hydrodynamic characteristics through using of numerical methods of design of experiment. Developing routines for automated calculation of rotor dynamics taking into account the stiffness and damping characteristics of the plain bearing (journal and thrust) and annular seals (labyrinth, scalop and annular with a deformable housing). Creation of experimental rig for the dynamic tests of the rotors, which simulates the radial and axial loads, as well as the seal-bearing units system, and it allows to experimentally determine the rotordynamic characteristics of bearings and seals, and to test the numerical calculations results.5481 Product Description popup.authors Гудков Сергій Миколайович Дейнека Андрій Віталійович Дем'яненко Марина Миколаївна Загорулько Андрій Васильович Кісєльов Ігор Олександрович Міщенко Светлана Олексіївна Манжаров Володимир Олександрович Масалітін Іван Олегович Савченко Євген Миколайович Терновський Сергій Анаталійович popup.nrat_date 2020-04-02 Close