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Information × Registration Number 0305U003797, 0101U001599 , R & D reports Title Investigation of free and controlled operation modes of space-based and ground-based transformable spatial-developed mechanical systems under wide spectrum influences. popup.stage_title Створення комп'ютерних алгоритмів і програм. Дослідження робочих і позаштатних режимів функціонування, розробка на цій основі принципових схем побудови систем. Head Alpatov Anatoliy Petrovich, Доктор технічних наук Registration Date 14-07-2005 Organization Institute of Technical Mechanics NASU and NSAU popup.description2 Object of research is transformable spatial-developed mechanical systems. The purpose of activity is the creation of computer algorithms and programs for investigation of processes of the transformable spatial-developed mechanical systems functioning; study of operating and abnormal regimes of systems functioning; development of principles of systems parameters construction and calculations. Used methods are information-analytical, mathematical modeling, computer simulation, theoretical mechanic methods, similarity theory methods, and polygonal script methods. The algorithm and software package for computation of dynamics of a small space cable system of two bodies stabilized by rotation are developed. The necessity of incorporation of additional damping devices in the system is shown. The general mathematical model of dynamics of the space cable system stabilized by rotation is created as the system of elastically attached solid bodies. An algorithm and program for the computation of natural frequencies and vibration modes of the space cable system with a spherical hinge are developed. The problems of ground-based experimental researches of dynamics of the system with the damping device of the yarn to the body attachment are set. The damping devices mock-up model designs are developed. The methodical problems of the choice of parameters of the system of gravitational stabilization of a space vehicle with cable and swing joint are solved. The software package for the system parameters determination is created. The analysis of stabilization system configurations variants, and the analysis o system parameters influence on its dynamics are carried out. The algorithms and computer programs for the research of large transformable space reflectors operation regimes are designed. The computer program for the research of the dependence of the reflector required reflecting surface realization error on antenna frame geometrical parameters for the conventional design is developed. The estimated ratio for the definition of antenna frame elements materials application is received at given temperatures range. The requirements to material physical properties are formulated from the point of view of the material use possibility for frame elements and tensioner system cables manufacturing. The means of temperature distortion compensation ensuring the least value of reflector surface mean-square deviation from the required surface are determined. The approach to construct the algorithms to control the antenna reflecting surface form is offered. The algorithm and computer program implementing the solution of antenna reflector meridian сircuit dynamical equations are developed. Dynamics of guy type antenna reflector meridian circuit is investigated. The practical methods of computer construction of mathematical models and visualization of simulation results for transformable mechanical systems are considered and improved. Results application area is the development of space vehicles gravitational stabilization systems; development of space cable systems; development of large transformable space reflectors. Product Description popup.authors popup.nrat_date 2020-04-02 Close