Department of systems analysis and control problems

Head of department – Corresponding Member of the National Academy of Sciences of Ukraine, D.Sc., Professor Anatolii P. Alpatov

Anatoly P. Alpatov

Field of research – systems analysis of space sector problems; study of free and controlled operating regimes of ground- and space-based mechanical systems under a broad spectrum of actions; solution of problems of development of biomechanical and medical information systems; rarefied gas dynamics and molecular gas dynamics.

Systems analysis of space sector problems

A system analysis methodology of space systems has been developed, including theoretical models and computational methods for multicriteria comparative analysis of existing and designed space systems, assessing their competitiveness and effectiveness. Dataware and analytical tools for research of satellite and space transport systems have been created.

Statistical methods for structural-parametric identification and structural identification criteria have been developed to simulate multidimensional technical systems in the class of systems of autoregressive equations. The application of the developed methods and modeling criteria improves the quality of forecasting the states of technical systems based on the results of observing their functioning under structural and parametric uncertainty.

A systematic analysis of global trends in space engineering and promising areas of development of space transport systems, the state of the market for satellite communication systems, navigation, remote sensing and space transportation services. Based on the methods developed in the department, scenarios of the development of satellite systems and forecast estimates of the demand for spacecraft launch services for the short, medium and long term have been compiled.

The department carries out a large amount of work related to the activities of the SSAU to develop large-scale policy documents, in particular, the concept of structural reorganization and innovative development of the space industry, the conceptual basics of state policy in space activities. The methodological developments of the department have been used to determine the main ways to increase the competitiveness of Ukrainian launch vehicles.

Based on the results of systematic studies at the ITM of the NASU and SSAU, the development of four National Space Programs of Ukraine has been completed, as well as their scientific and technical support.

Despite the experience gained in designing launch vehicles during the development of new carriers, as well as in the process of modernizing existing ones, the tasks of optimizing the design parameters of such objects remain relevant.

The multiobjective problem of configuration choice and optimization of basic design parameters and flight control programs has been formulated for liquid-propellant LVs of different classes designed for near-Earth orbit injection.

For this multiobjective problem, a mathematic LV model has been developed, which allows one to determine the size-and-mass, energy, and ballistic characteristics of different LV classes as a function of the source data and the values of the structural and basic design parameters. An approach has been developed, which allows one to reduce an optimal control problem to a problem of nonlinear programming with imposed restrictions in the form of equalities, inequalities, and differential constraints.

The research is being conducted by PhD V.S. Senkin, Junior Researcher S.V. Syutkina-Doronina.

Using this approach, practically important problems of the initial stage of space hardware designing have been solved.
Dynamics of tethered space systems

Tethered space systems (TSSs) are a promising line in the development of space hardware and technologies. TSS projects are highly diversified in purpose, and they are aimed at improving the operation of both microsatellites and traditional spacecraft as well as the international space station and interplanetary vehicles.

The department carried out work to identify patterns of dynamics of space tethered systems. For the first time the effect of energy dissipation in the tether material on the evolution of TSS rotary motion has been studied in the general case of translational-rotary motion. The method of osculating elements has been augmented and generalized as a general method for the study of nonlinear dynamics.

The possibility of random synchronization of motions under the action of dissipative forces and the existence of stochastic attractors for the TSS class have been shown. A new mechanical image of stochastic motion regimes has been constructed, around which a new explanation of the origination of random trajectories in deterministic systems has been given. New methods have been developed, and new results on the problem of random motions in deterministic systems have been obtained.

The scheme of full-scale experimental studies and the configuration of a small single TSS have been decided on. Schematics of the individual TSS units that affect TSS dynamics have been worked out, and their ground experimental studies have been conducted.

Probabilistic estimates of TSS survival time as a function of the orbit and design parameters have been obtained. Recommendations on tether joint reliability improvement have been made.

A new class of gravity stabilization systems (GSSs) for satellites of systems that use flexible connectors (tethers) has been singled out and investigated. The dynamics of a satellite with a tethered GSS has been analyzed. A procedure has been developed for the choice of the design parameters of a tethered GSS, and conditions for the transient damping time in the system to be a minimum have been identified.

The dynamics of spacecraft with a GSS in the form of a rigid rod has been studied. Conditions for the stability of gravimetric spacecraft stabilization and for the occurrence of resonances caused by a variable aerodynamic moment have been identified. New procedures have been developed to study small spacecraft oscillations described by a Hill-type equation in nonresonance and resonance cases.

Electrodynamic tethered space systems (EDTSS) are promising for transport operations in near-Earth orbits and provide one of the most economical ways to solve the problem of the disposal of space objects from near-Earth orbits.

Studying the properties of EDTSS is a complex interdisciplinary problem related to solving of many subtle problems of nonlinear dynamics and interaction of the system with the near-Earth environment. Successful development of EDTSS is related to the necessity of obtaining reliable experimental data of the systems functioning under natural conditions. Due to the nature of tethered space systems, the experimental research would be appropriate in small autonomous EDTSS. The department offered a project of small experimental EDTSS to conduct field experiments, which won the competition of the Task comprehensive program of NAS of Ukraine in space research for 2012-2016.

By now, the methods of calculation have been developed: EDTSS interaction with ionospheric plasma and magnetosphere; interaction with a neutral media; the effect of solar heating and shading; tether destruction probability by cosmic particles; relative and orbital motion dynamics, taking into account the possible resonances; dynamics of system deployment. The developed techniques enable us to determine the parameters of a small experimental EDTSS given orbit motion and start-up time; select the position of the measuring instruments; define minimum requirements for the spacecraft. A method of EDTSS deployment, ensuring its dynamic stability was proposed.

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. A.V. Pirozhenko, PhD. D.A. Hramov, PhD. A. I. Maslova, Junior Researchers A. L. Voloshenyuk and A.V. Mishchenko.

General issues of space flight dynamics

New forms of perturbed Keplerian motion equations were proposed and the effectiveness of their application for space flight dynamics problems was indicated.

New kinematic parameters of solid-body motion were proposed relative to the center of mass, based on terrestrial reference system transition to the source by two turns. On this basis a new satellite orientation control algorithm performed with magnetic executive bodies was proposed.

New forms of solid-body motion equations were proposed relative to the center of mass, describing explicitly gyroscopic moments which occur when the body is rotated. This form of equations is useful for the development of solid-body orientation control principles.

New forms of motion equations of two interacting satellites in near-Earth changing orbit, including equations of perturbed Keplerian motion, the equation of mass center motion of subsatellite relative to the mass center of the main satellite and the equations satellite motion relative to self-center mass.

The methods of study of satellite oscillations relative to center of mass under the impact of periodic external disturbances were developed. These methods include methods of research of resonant and non-resonant system oscillation cases described by Hill-type equations.

The research is being conducted by DSc A.V. Pirozhenko, PhD. A. I. Maslova.

Large-size transformable space structures

Based on a non-Galilean model of conceptual space-time, a new theory of motion of deformable bodies has been developed, and novel mathematical models, which describe the dynamics of mechanical and thermomechanical processes by a unified system of equations, have been devised. A new approach to a mathematical description of the dynamics of a large space structure as a deformable body has been proposed. With this approach, a three-dimensional dynamic model is replaced with an equivalent four-dimensional static model, for which force and moment equilibrium equations have been derived. A numerical-and-analytical method has been developed, which allows one to determine the displacement, deformation, and temperature at all points of a large space structure. The method was used in investigations involving the development of large-size space reflectors at Energia Research and Production Association (Russia) and at the Institute of Space Structures (Georgia).

The methodological base of adaptive-robust orientation control of solar space power plants has been developed – a new class of control objects that differ significantly from the spacecraft that were previously used and are currently operating in orbits. The creation of such power plants is one of the promising ways to develop energy.

The implementation of the required form accuracy of a reflective surface in the manufacturing of large (tens of meters in diameter) space reflectors is a complicated technical problem, whose topicality stems from the rapid advancement of radio astronomy, satellite communications, and solar power engineering. At the department, a series of investigations have been conducted into the shaping of a large-size cable-stayed space reflector. A method for singling out a shaping element and its discrete and continual analytical model have been proposed. Active and passive algorithms have been developed to control the reflective surface shape.

Based on the methods of mobile control augmented at the department earlier, investigations have been continued into the problem of mobile control of large space structures using the solar radiation pressure.

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. S.V. Khoroshilov, PhD. V.N. Shichyanin, Ph.D. V.P. Delamure, Ph.D. P.A. Belonozhko, and others.

Manipulator dynamics

A complex of methods and algorithms has been developed for the study of controlled systems of a special type mobile control systems. For a number of ground- and space-based objects, a comparative analysis of the use of the principles of traditional and mobile control has been made. Situations have been revealed where mobile control is a preferable way, and in some cases the only way to construct an automatic system. The theoretical results of the study were used as the basis for the algorithms of the control system of the YuG-1 industrial robot developed at the department by Yuzhmash Production Association’s request. The customer made good use of the prototype robots in hot bolt heading.

The study of space manipulator dynamics was started in the 1980s and then pursued under contracts with the Central Research Institute of Robotics and Engineering Cybernetics, which was engaged in the designing of a space manipulator for the Buran system. Comprehensive investigations were conducted into the effect of a finite structural stiffness on manipulation dynamics. A series of mathematical models based on analytical models of different levels of detailing were developed, the programmed motion selection problem was analyzed, and an actuating control system was synthesized. The results of the investigations were used in the tryout of innovative products as primary introduction at the Research Institute of Robotics and Engineering Cybernetics. At present, studies are underway on augmenting methods for equivalent finite-dimensional representation of analytical models of extended elastic elements of mechanical systems to meet more stringent requirements on the equivalence conditions, which account, among other things, for the dynamics of element interaction with attached bodies. The experience gained in the study of space manipulator dynamics has made it possible to solve some problems of a manipulator operating in nonstandard situations, where its motion conditions may not be known in advance and, moreover, may change in motion.

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. S.V. Khoroshilov, Ph.D. A.A. Fokov, Researcher S.V. Grigoryev.

Space debris problem

At present, the problems of near-Earth space pollution prevention and of providing space hardware safety and serviceability in conditions of more and more growing space debris population become increasingly important.

A work package on providing space vehicle safety in terms of the risk of collision with space debris has been carried out, and issues of space debris cloud growth prevention have been considered. A complex of used spacecraft de-orbiting problems has been analyzed. An electrodynamic tethered space system, which uses electrodynamic braking to de-orbit a used spacecraft, has been studied. It is shown that the proposed system will provide efficient removal of space debris from near-Earth space in low orbits.

The studies that are necessary to implement the concept of contactless removal of space debris, are called the “Shepherd with an ion beam.” Simplified analytical models have been developed to calculate the action that is transmitted to the space debris object using the ion beam of an electric propulsion engine of a service spacecraft (shepherd). A method has been proposed to determine the force of action of an ion beam on an orbital object from a known central projection of the object onto the picture plane of a shepherd’s video camera. The calculation of forces and moments transmitted by an ion beam to such objects of space debris as the upper stages of launch vehicles has been made. The control to maintain the necessary relative position of the “shepherd” has been synthesized. The feasibility of using control actions to increase the eccentricity of the orbit is investigated.

The basic provisions of normative documents aimed at increasing space flight safety have been worked out, and a branch standard on near-Earth space pollution limitation has been prepared. At the department, work is underway to provide scientific and technical support to cooperation between the National Space Agency of Ukraine and the Inter-Agency Space Debris Coordination Committee (IADC). The work is part of cooperation with the IADC, and the head of department is an IADS member and takes part in regular IADC sessions. Alpatov is a member of the IADC steering group and working group 4, S. V. Khoroshilov is a member of working group 3, which specializes in the protection of space technology space debris.

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. S.V. Khoroshilov, DSc. A.V. Pirozhenko, DSc. A.P. Sarychev, DSc. Yu. A. Prokopchuk, Ph.D. A. A. Fokov, Ph.D. Yu. N. Goldstein, PhD. A. I. Maslova, PhD D. A. Hramov, PhD L. L. Pecheritsa, Researcher T.G. Smelyaya, Junior Researcher A.S. Paliy and others.

Development of biomechanical and medical information systems

The biomechanical studies conducted at the department are aimed at developing hardware and software for the diagnostics and correction of the physiological state of the locomotor apparatus.

The work on the development of medical hardware falls into mechanotherapy (swing machines, traction tables), software/hardware systems for human body state monitoring (computerized dynamometers, anthropometric scanners, ligament tear detectors), and orthopedy (upper extremity ortheses, orthesis play meters for hinge wear assessment, a device for securing threaded rods in the bone tissue of injured extremities). Various prototype medical devices have been tested in clinical setting.

An important line of investigation is the development of medical information systems and intelligent modules. A general methodology has been developed for the construction of versatile medical knowledge banks, including intelligent systems of human state monitoring. A new efficient method, termed “method of limiting generalizations”, has been proposed for the solution of weak-formalized problems of medical diagnostics, patient state prediction, and assessment of the efficiency of medical aid. Formal system schemes of the major clinical and scientific problems of study of the locomotor apparatus state have been worked out.

The results of the investigations are used in experimental and practical medicine; information systems have been introduced at the Dnepropetrovsk Regional Diagnostic Center, at the Outpatient Department of Dnepropetrovsk Municipal Hospital No 2, and at the Medical Center of Nikopol Ferroalloy Plant.

The research is being conducted by DSc. Yu.A. Prokopchuk, researchers A.D. Kulik and S.V. Grigoriev, engineers A. N. Avdeev and G. E. Brazhnikova.

Cognitive technologies development for the analysis, management and design of complex equipment. An analysis of technological trends in the space engineering shows that recently there have been tendencies for a sharp increase in the complexity of control tasks, intensive intellectualization of control systems, the formation and development of global infotelecommunication networks and distributed control systems, the diversification of intelligent systems, which determines their nonlinear nature, accelerated development of theory and the practice of artificial intelligence systems, multi-agent, robotic and cyborg systems. Such trends make it necessary to attract the active attention of researchers to cognitive models of analysis, forecasting and management of complex systems in the context of the development of space technologies.

The rapid progress of cognitive technologies, the transformation of this area into a powerful industry, is driven by the objective need to quickly achieve a new quality of control of complex systems, including space engineering technology. The department is developing a whole class of artificial cognitive systems, a new paradigm of computational architecture with numerous practical applications in various fields of human activity. A method has been proposed to construct promising distributed (network) spacecraft control systems based on reconfigurable self-tuning measuring and control systems.

The research is being conducted by DSc. Yu. A. Prokopchuk.

International cooperation and foreign partners

Research is being conducted on LEOSWEEP project ( “Improving Low Earth Orbit Security With Enhanced Electric Propulsion” FP7-SPA 2013.3.2-01, EUROPEAN COMMISSION 7th Framework Programme for Research, technological, Development and Demonstration), which was sign as a result of winning the competition FP7-SPACE-2013 of European Union https://leosweep.upm.es/ru/). The project is dedicated to the development of the concept of the SC-shepherd with an ion beam to remove large debris objects in crowded areas of low-Earth orbits.

The purpose of the project LEOSWEEP is substantial progress achievement in the key areas of this concept by creating complete and legally sound technologies for implementation of low-cost demonstrative orbital mission. LEOSWEEP is a joint project of experts of ITM of NASU and NSAU; state design office “Yuzhnoye”; Universidad Politecnica de Madrid (Spain); TransMIT Gesellschaft fuer Technologietransfer mb (Germany); Deutsches Zentrum Fuer Luft – und Raumfahrt EV (Germany); Deimos Engenharia SA (Portugal), International Space Law Center (Ukraine) , University of Southampton (UK), Centre National de la Recherche Scientifique (France).

International projects INTAS-94-0644, “Experimental and Computational Analysis of Tethered Space Systems”, and INTAS-99-01096, “Theoretical and Experimental Investigation of Multibody Space Systems Connected by Hinges and Tethers”, were implemented in cooperation with the Institute of Applied Mathematics of the Russian Academy of Sciences and Vienna University of Technology (Austria).

The study involving the development of large-size space reflectors was conduced in cooperation with Kometa Central Research and Production Association (Russia) and the Institute of Space Structures (Georgia).

The dynamics of the Buran space manipulator was studied in cooperation with the Central Research Institute of Robotics and Engineering Cybernetics (Russia).

The dynamics of tethered space systems is studied in cooperation with Korolev Samara State Aerospace University (Russia).

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. S.V. Khoroshilov, DSc. A.V. Pirozhenko, PhD. A. A. Fokov, PhD A.I. Maslova and others.

Rarefied gas dynamics and molecular gas dynamics

Methods of rarefied gas dynamics and molecular gas dynamics have found a number of modern applications in the development and operation in space engineering.

Work in the field of rarefied gas dynamics and molecular gas dynamics was in demand due to the rapid development of space technology and space research in the upper atmosphere of the Earth and the planets of the solar system. The main focus of research was associated with the need for aerodynamic support of design and development in the field of spacecraft (SC) for various purposes. The main driving force and ideologist in this direction was DSc., professor V.P. Bass, who carried out scientific management until 2014.

Basic research on this topic:

  • development of numerical methods, algorithms, and software to study the aerodynamic, thermal, and photometric characteristics and processes of mass transfer in the vicinity of orbital and descent vehicles;
    • laboratory simulation of flight conditions, experimental study of the features of interaction of supersonic neutral rarefied gas flows with surfaces being flown about, comprehensive testing and calibration of spaceborne measuring systems and instrumentation;
    • development of conceptions, design and implementation of space scientific and applied experiments.

Numerical simulation of flow about a complex-shaped spacecraft in the free-molecular regime is traditionally one of the basic lines of investigation at the department. Over a period of years, new results have been obtained on the generalization and refinement of the proposed semi-regular method, which combines the main advantages of direct statistic simulation methods, “local interaction” theory, and regular methods for the solution of problems of external flow about a spacecraft. Particular emphasis is given to the construction of efficient numerical algorithms and associated software for the inclusion of the effects of interference and mutual shading of structural elements, which make possible multiparameter studies of the aerodynamic characteristics of spacecraft of different purposes.

Most of the procedures developed became part of the USSR’s first “Designer’s Manual of the Aerodynamics and Heat Exchange of Space Vehicles in the Earth Upper Atmosphere” prepared in 1982 together with representatives of the leading research and design organizations (the Central Research Institute of Machine Building, Central Aerogasdynamic Institute, Energia Research and Production Association, Yuzhnoye Design Office, the Central Design Office of Machine Building, etc.).

A complex of problems of aerogasdynamic support of the VenusHalley international project was solved. For the first time in computational practice, the gas-dynamic features of a hypersonic (about 80 km/s) gas-dust flow about a spacecraft under simultaneous exposure to the solar radiation were investigated. The studies were used in deciding on the spacecraft trajectory in the coma of Halley’s comet and on the operating regimes of the attitude control and stabilization systems and in providing the thermal protection of the scientific instruments.

New mathematical models have been devised, efficient algorithms have been constructed, and software has been developed to describe mass transfer in the vicinity of a spacecraft, including the calculation of three-dimensional free-molecular flow fields with consideration for interaction of the engine jets with the structural elements.

In 1988, with direct financial support from Energia Research and Production Association and Yuzhnoye Design Office, a vacuum aerodynamic cryogenic-pumping plant (VAU-2M) was put into operation at the department. In performance, the plant compares well with the best foreign closed-circuit plants operating on a refrigeration cycle. In this installation, a number of new results have been obtained regarding:

  • static and dynamic tests of untight spacecraft compartments and scientific and service satellite-borne equipment;
  • determination of the momentum exchange coefficients and scattering indicatrices of supersonic neutral flows scattered by the basic structural materials of spacecraft coatings (AMG-6 alloy, screen-vacuum heat insulation, solar battery fragment, AK-12 enamel).
  • experimental studies of gas-dynamic conditions in models of untight spacecraft compartments.

Among the scientific results of the past decade may be highlighted work on the development of numerical algorithms of implementation of the “method of probe particles” (MPP), a variation of the Monte-Carlo method, for the solution of the Boltzmann equation for flow about variously shaped bodies in a wide range of calculation parameters.

The department took part in the preparation and publication of the 8th scientific and informational edition “Model of Space” [16].

Department scientists won the Yangel Prize of the National Academy of Sciences of Ukraine (1994) and the State Prize of Ukraine in Science and Technology (1997).

The research is being conducted by PhD L. L. Pecheritsa, Researcher A. M. Aksyutenko, Researcher T. G. Smila and others.

Directions for further research of the department. In the near future, the efforts of the scientists of the department will be aimed at studying two pressing problems in the development of the space industry – solving the problems of orbital service and the problems of implementing industrial production in orbit.

In the first one of these areas, the department has a significant reserve of scientific research. First of all, these are the tasks of removing space debris from working orbits described above, the task of describing the dynamics and controlling the relative movement of a service spacecraft and a service object. It is supposed to develop research methods related to the problems of close proximity and contactless action of the device on the orbital service object, as well as the tasks of optimal construction of service orbital systems.

Recently, the concept formulated by A. P. Alpatov is gaining development, according to which space debris objects (SDO) are considered as industrial resources production in orbit. The basis of most technologies for dealing with existing space debris is the idea of taking it into low orbits so that it burns out when entering dense layers of the atmosphere. The higher the orbit of the SDO is, the more energy is needed to divert it to the atmosphere for destruction. At the same time, according to various estimates, up to 7,000 tons of space debris, which contain expensive materials in their structures, are currently in space orbits. The output of one kilogram of mass into orbit is quite expensive. Depending on the height of the orbit – $10,000 and more. Therefore, it is proposed to consider the existing SDO not as garbage, but as one of the types of near space resources.

A new problem arises, the task of fragments disposing of SDO. At its first stage, it is necessary to collect all the debris into several clusters, each of which will be placed on one of the disposal orbits. Debris from the vicinity of these orbits will not be transported to a distant Earth, but to the nearest disposal center. Thus, it is possible to develop cheaper technologies to collect SDO fragments on the one hand, and on the other, to save them as material for future industrialization of space. Several dozens and even hundreds of recycling centers WILL NOT be a threat to functioning spacecraft.

Cooperation is developing with scientists from the National Metallurgical Academy of Ukraine under the leadership of Professor A. Mikhalev on the creation of space platforms and SDO processing technologies in near-Earth conditions.

The research is being conducted by the corresponding member of the NASU, professor A.P. Alpatov, DSc. S.V. Khoroshilov, DSc. A. P. Sarychev, DSc. Yu. A. Prokopchuk, DSc. A.V. Pirozhenko, PhD. A. A. Fokov, PhD Yu. N. Goldstein, PhD A.I. Maslova, PhD D. A. Hramov, PhD L. L. Pecheritsa, graduate student E. A. Lapkhanov and others.

Major publications

  • Alpatov A.P. Dynamics of Spacecraft (in Russian). – Kiev: Naukova Dumka, 2016 – 486 pp.
  • Alpatov A.P. Mobile Control of Mechanical Systems (in Russian). – Kiev: Naukova Dumka, 1998. – 245 pp.
  • Alpatov A. Determination of the force transmitted by an ion thruster plasma plume to an orbital object / A. Alpatov, F. Cichocki, A. Fokov, S. Khoroshylov, M. Merino, A. Zakrzhevskii // Acta Astronautica. – 2016. – #119. – P.241 – 251.
  • Alpatov A.P. Modeling the dynamics of space manipulators on a moving base (in Russian) / A.P. Alpatov, P.A. Belonozhko, P.P. Belonozhko, S.V. Grigoriev, S.V. Tarasov, A.A. Fokov // Robotics and technical cybernetics.- №1.-2013.- Pp. 61-65
  • Rotary Motion of Tethered Space Systems (in Russian) / A.P. Alpatov, V.V. Beletsky, V.I. Dranovsky, A.E. Zakrzhevsky, A.V. Pirozhenko, G. Troger, V.S. Khoroshilov. – Dnepropetrovsk: ITM of NASU and NSAU, 2001. – 404 pp.
  • Dynamics of Space Systems Connected by Hinges and Tethers (in Russian) / A.P. Alpatov, V.V. Beletsky, V.I. Dranovsky, A.E. Zakrzhevsky, A.V. Pirozhenko, G. Troger, V.S. Khoroshilov. – Izhevsk : Regulyarnaya i Khaoticheskaya Dinamika, 2007. – 558 pp.
  • Alpatov A.P., Prokopchuk Yu.A., Kostra V.V. Hospital Information Systems: Architecture, Models, and Solutions (in Russian). – Dnepropetrovsk: USKhTU, 2005. – 257 pp.
  • Information Technologies in Education and Health Care (in Russian) / A.P. Alpatov, Yu.A. Prokopchuk, O.V. Yushchenko, S.V. Khoroshilov. – Dnepropetrovsk: ITM of NASU and NSAU, 2008. – 287 pp.
  • Alpatov A.P. Contactless removal of space debris by an ion beam. Dynamics and Management / A.P. Alpatov, A.I. Maslova, S.V. Khoroshilov / Lambert Academic Publishing, Saarbucken, Deutchland. – 2018 .– 337c.
  • Prokopchuk Yu.A. Intelligent Medical Systems: Formal Logical Level (in Russian). – Dnepropetrovsk: ITM of NASU and NSAU, 2007. – 259 pp.
  • Prokopchuk Yu. A. Sketch of a formal theory of creativity. Monograph. – Dnipro: State Higher Educational Institution “PGASA”, 2017. – 452 pp.
  • Prokopchuk Yu. A. The paradigm of limit generalizations: models of cognitive architectures and processes. – Saarbrucken, Deutschland: LAP LAMBERT Academic Publishing, 2014 .– 204 pp.
  • Prokopchuk Yu. A. The principle of limit generalizations: methodology, problems, applications. Monograph. – Dnipro: ITM of the NASU and SSAU, 2012.- 384 pp.
  • Sarychev A.P. Identification of States of Structurally Uncertain Systems (in Russian). – Dnepropetrovsk: ITM of NASU and NSAU, 2008. – 268 pp.
  • System analysis and control of complex systems in conditions of uncertainty / A.P. Alpatov, V.T. Marchenko, Yu.A. Prokopchuk, A.P. Sarychev, S.V. Khoroshilov. – Dnepropetrovsk: ITM NASU and SSAU, 2015 .– 196 pp.
  • Sarycheva L. GMDH-Clustering / L. Sarycheva, A. Sarychev // GMDH-Methodology and Implementation in C / Editor Godfrey Onwubolu / London : Imperial College Press, 2015. – P. 157-203
  • Alexander Sarychev. Modeling complex systems under structural uncertainty: regression and autoregressive models / LAP LAMBERT Academic Publishing RU, Saarbrucken, Deutschland. – 2016 .– 274 pp.
  • Efficiency of Scientific and Technical Projects and Programs (in Russian) / O.V. Pylypenko, E.S. Pereverzev, A.P. Alpatov, V.T. Marchenko, O.K. Pechenevskaya, P.P. Khorolsky. – Dnepropetrovsk : Porogi, 2008. – 509 pp.
  • Alpatov A.P., Belonozhko P.A., Gorbuntsov V.V. et al. Dynamics of Spatially Developed Configurable Mechanical Systems (in Russian). – Kiev: Naukova Dumka, 1990. – 255 pp.
  • Dynamics of Spacecraft with Magnetic Control Systems (in Russian). /Alpatov A.P., Dranovsky V.I., Saltykov Yu.D., Khoroshilov V.S. / Kovtunenko V.M. (ed). – Moscow: Mashinostroenie, 1978. – 200 pp.
  • Dynamics of Tethered Spaсe Systems / A. P. Alpatov, V. V. Beletsky, V. I. Dranovskii, V. S. Khoroshilov, A. V. Pirozhenko, H. Troger, A. E .Zakrzhevskii. – Boca Raton, FL, USA: CRC Press , 2010. – 223 p.
  • Alpatov A.P. Debris in near-Earth space. / Alpatov A.P., Bass V.P., Baulin S.A., Brazinskii V.I., Gusinin V.P., Daniyev Yu.F., Zasukha S.A. // Branch edition – Dnepropetrovsk: Porogi, 2012. – 378 pp.
  • Pirozhenko A.V. Project of small experimental electrodynamic space cable system / A. V. Pirozhenko, A. I. Maslova, A. V. Mishchenko, D. A. Khramov, O. L. Voloshenyuk // Space science and technology. – 2018. – №2. – Pp. 3 – 11.
  • Maslova A. I. Change of orbit under the action of small constant braking / A. I. Maslova, A. V. Pirozhenko // Space Science and Technology. – 2016. – V. 22, N 6. – Pp. 20-24.
  • Laphanov E. O. Analysis of the possibility of using a propulsion system with permanent magnets for spacecraft in orbit / E. O. Laphanov, O. S. Paliy // System technologies. – 2018. – № 4 (117). – Pp. 24 – 35.
  • Senkin V. S. Investigation of the sensitivity of the target functional to variations of the design parameters of the guided space object / V. S. Senkin, S. V. Syutkina-Doronina // Aviation and space technology. – 2016. – № 3. – Kharkiv. – Pp. 9 – 17.
  • Senkin V.S. To the choice of parameters of the braked rocket engine on solid fuel for removal of the spacecraft from a working orbit / V.S. Senkin // Technical mechanics. – 2016. – № 1. – Pp. 38-50.
  • Marchenko V. T. On a new method for assessing the technical level of spacecraft for remote sensing of the Earth / V.T. Marchenko, E.P. Petlyak, N.P. Sazina, P.P. Khorolsky // Technical Mechanics. – 2017. – No. 3. – Pp. 35-45.
  • Bass V.P. Molecular Gas Dynamics and Its Space Engineering Applications (in Russian) – Kiev : Naukova Dumka, 2008. – 272 pp.
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