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The problem of space debris disposal is becoming more and more urgent with the increasing availability of research related to the launch of spacecraft into outer space. In addition to destroying the objects that are already moving in orbit, it is necessary to prevent the appearance of new ones. So there is a need to equip spacecraft with recycling systems. As such, it is possible to use an inflatable aerodynamic accelerator, which is a thin-walled shell, compactly packed in a container. The paper presents the results of designing the housing of an inflatable aerodynamic accelerator, and considers possible options for the shell deployment system. [ABSTRACT FROM AUTHOR]

In the early decades of the 21st century, the world faced with an active development of information technologies, which is accompanied by an instant change of network protocols. Nowadays it is difficult to imagine the information infrastructure of a modern company without complexes of accounting programs, decision-making support, expert systems, knowledge bases, etc. All of them need reliable and high-quality engineering support. With the growth of information needs of society, the requirements for the quality of information and communication systems became more stringent. The use of computer simulation for ensuring the effective operation became relevant. During the research of control processes in information and communication systems it is effective to use the hierarchical approach for the developing of models, involving the development of multiple basic, local and global models. The article provides a structural, functional and load analysis of information system with priority management of heterogeneous load, shows the possibility of using singlechannel queueing system with a heterogeneous flow of applications to study various priority methods of traffic management; To determine the time of package delivery, the performance and reliability of the information system, analytical and simulation models have been developed with relative simplicity and clarity that allow taking into account the features of the structural and functional organization of the information system, recommendations are formulated on the use of analytical and simulation methods for modeling the processes of priority processing and data transfer for system analysis of the quality of operation IP of various classes, the results of which can serve as the basis for solving design problems new or modernization of existing information system. [ABSTRACT FROM AUTHOR]

This paper discusses Bazykin population model with intraspecific competition of each population and predator saturation factors. The parametric zones of mono- and bistability are analyzed. For the case of environmental impact, described by parametric noise, transitions of random trajectories between basins of attraction are studied. It is shown how the confidence domain method can be used to predict noise-induced transition which generates large-amplitude oscillations known as excitability. We demonstrate that for three different deterministic scenarios the impact of parametric noise leads to the same environmental shift. [ABSTRACT FROM AUTHOR]

The space debris problem is becoming more and more relevant with the increasing availability of space. Thus, the necessity to equip new spacecrafts with special disposal devices arises. One of the possible ways to dispose of a disabled satellite is its transferring to the dense atmosphere using decelerator devices. Design and technology issues of small spacecraft’s inflatable aerodynamic decelerator (IAD) were analyzed. [ABSTRACT FROM AUTHOR]