Search academic texts

Information × Registration Number 0214U008121, 0114U003613 , R & D reports Title Study of features and mechanisms for the control of spacecraft orbital motion in a conducting medium. Stage 1 - "Modeling of dynamic processes of interaction between spacecraft and artifical magnetosphere and between electrodynamic space cable system and plasma of ionosphere and solar wind" popup.stage_title Head Shuvalov Valentyn Oleksievych; Alpatov Anatoliy Petrovych, Registration Date 21-07-2014 Organization The Institute of Technical Mechanics of the National Academy of Sciences of Ukraine and the State Space Agency of Ukraine popup.description2 Object of research - direction 1: "magnetized" solid body with an artificial magnetosphere in a supersonic flow of rarefied plasma; direction 2: the dynamics of space electrodynamic tether system. Purpose of research - direction 1: to study the characteristics and mechanisms of the magnetohydrodynamic (MHD) interaction between the spacecraft and the artificial magnetosphere in a supersonic rarefied plasma flow; direction 2: design and development of mathematical models of the dynamics of space electrodynamic tether system to determine the feasibility of creating a highly effective device for passive deorbit of debris from low earth orbits. Method of research - physical modeling, informational and analytical, methods of theoretical mechanics and space flight mechanics, ionized plasma physics, probability theory, mathematical modeling and computer visualization. Obtained results. Direction 1. It was shown experimentally that structures of the spatial distribution of the charged particles and electric currents similar to the Chapman-Ferraro model can be reached in the hypersonic flow of rarefied plasma with the aid of the solid body's magnetic field. The correctness of the measurement of currents and charged plasma particles in the model experiment was confirmed by the existence of two-peaks structure of the spatial distribution of electron density in polar ionosphere, that has been measured on the spacecraft "Sich-2" using the equipment of the ITM of NASU and SSAU. The possibility of effective control of MHD interaction between solids and supersonic flow of rarefied plasma with the aid of own magnetic field and artificial magnetosphere has been confirmed experimentally. The possibility to control the movement (acceleration or deceleration) of solids using "magnetic sail" with a non-zero aerodynamic quality has been proved. Direction 2. Designed a model accounting weighting tether in deployment of space tether systems that allow for the study of new deployment schemes. An important tool for the analysis of the model and a factor that facilitates the choice of its parameters, is designed for the reporting period the program for visualization tether's movement. Identified deficiencies generally accepted model of the electrodynamic interaction of space tether system with the environment, and the model for calculation of current harvested small passive electrodynamic tether system on the basis probe models. Designed a model of the dynamics, describing the orbit and relative motion of the system with the main disturbances. Developed a simplified mathematical model, which allows to perform calculations and to obtain estimates of the time undefeated space tether system with mono- and dual fiber tether. Scope of application - direction 1: mechanics of fluid, gas and plasma; the results are intended to be applied to the MHD control of the spacecraft flight in the ionosphere or interplanetary space; direction 2: Scope of application - spaceflight dynamics. Product Description popup.authors Алпатов А.П. Дудник О.В. Кочубей Г.С. Кулагін С.М. Лазученков Д.М. Носіков С.В. Пироженко О.В. Письменний М.І. Різниченко М.П. Скіпочка Л.І. Скорік О.Д. Токмак М.А. Храмов Д.О. Шувалов В.О. Шупілова Л.М. Яцуненко А.Г. popup.nrat_date 2020-04-02 Close