The authors of the article developed an autonomous energy supply system for remote military facilities and settlements using liquefied natural gas. A characteristic feature of the developed system is a simplified constructive design of cryogenic equipment for liquefied natural gas, increased reliability and service efficiency of an autonomous energy supply system, as well as the possibility of independent operation of a gas engine and a boiler station from each other.

Keywords: Boiler room, liquefied natural gas, military infrastructure facility, autonomous energy supply

issues of optimization of the structure of the container pneumatic transport system are considered. The expediency of combining the functions of the equipment included in the transport system is shown. A functional diagram of a universal module that performs the functions of all blocks of a pneumatic transport system is presented. A block diagram of a microprocessor control system that provides the functioning of the mechanisms of a universal module is proposed.

Keywords: microprocessor system, pneumatic transport system, transport container, stations of the transport system, control algorithm, structure of the transport system, transport pipeline

The Minsk Motor Plant D-245 engines are the most widely used in automobiles and tractor manufacturing in Russia and neighboring countries. These engines are installed on cars of the GAZ and MAZ family, PAZ buses, special equipment manufactured by Amkodor, MTZ tractors, etc. A turbocharger is one of the engines units affects power and environmental performance. The presence of a large number of engines under consideration makes it important for repair enterprises to improve the technological process of repairing turbochargers. A large number of technologies for repair rotor shaft of the turbocharger have been developed to date. However, there is no technology to restore the outer surface of the rotor seal sleeve after they touch the hole of the middle housing. The article presents the results of calculating the stress-strain state of the rotor shaft of a turbocharger, taking into account the installation of an additional (repair) part as a turbine seal sleeve. The analysis of the created solid-state model was carried out using of the SolidWorks Simulation system. The calculation was carried out at various shaft diameters for bearings. The study found that the voltage in dangerous sections of the rotor shaft with the installed repair sleeve is higher than without it. However, they are much lower than the permissible torsional stresses. Therefore, the probability of destruction of the rotor shaft during normal operation of the turbocharger, due to the occurrence of a resonance phenomenon, even with the minimum allowable diameter, will be very small. The presented data allow the use of this repair method to restore the operability of the rotor shaft of the TKR-6 turbocharger.

Keywords: engine, turbocharger, defect, repair technology, additional part, repair sleeve, stress-strain state, solid-state model, dangerous section, permissible stress

The search for a global extremum by the invasive weed method is considered. It is proposed to create a software tool that implements a bio-inspired global optimization method that belongs to the group of metaheuristic methods - the invasive weed method, which searches for a global extremum

Keywords: global extremum, bio-inspired method, metaheuristic method, invasive weed method, evolutionary method, software

Mathematical models with analytical properties are needed to create modern stabilization systems for various objects and technical systems. This is due to the fact that most of the existing methods for the synthesis of automatic systems are based on mathematical transformations of models of control objects. However, for complex objects and systems, these models are obtained experimentally. Moreover, the experimental data are approximated by various well-known methods. If the dependences are essentially nonlinear in nature, they are approximated by sections. Such a fragmented model as a whole is not analytical, which excludes the use of many well-known methods for the synthesis of nonlinear stabilization systems. In these cases, it is advisable to use the new Cut-Glue approximation method developed at DSTU, which allows one to obtain an analytical model of an object from piecewise approximations. This analytical model allows you to apply the analytical method for the design of quasilinear control systems for nonlinear objects. In this paper the propoused approach is illustrated by example of the design of a nonlinear system for stabilizing the flight altitude of an airship.

Keywords: stabilization system, analytical synthesis, nonlinear control object, mathematical model, quasilinear form, experimental data, fragmentary model, multiplicatively additive approximation

Currently, special attention is paid to creating a comfortable urban environment, as a result of this there is a need to create projects that contribute to improving the quality of life of the population. In this paper, we consider two subprograms of the Rostov region: "Improvement of public territories of municipalities of the Rostov region" and "Improvement of the courtyards of apartment buildings in the Rostov region", operating under the state program "Formation of a comfortable urban environment." The number of transformed public and house territories from the moment of implementation of these subprograms of the Rostov region is analyzed.

Keywords: comfortable urban environment, state program, land improvement, public areas, transformation

This study investigates possibilities for identifying additional deposits of polymetallic ores based on geophysical studies that use ground-penetrating radar (georadar). Such studies can render a deposit significantly more attractive from an economic standpoint. Experimental methodological work was carried out to compare the geological data of preliminary exploration and georadar exploration with GROT 12 georadars.

Keywords: ground-penetrating radar, radargram, geological section, profile, anomaly, ore body, exploration, video pulses

The article discusses the methodology for deploying dual-purpose military infrastructure facilities, including a model for optimizing the placement of the service network in garrisons, where it has already developed, and the question is its reconstruction and expansion. The calculations are made on the example of service in military camps. To optimize the placement of the service network, a criterion is adopted to minimize the service time.

Keywords: garrison service, service network, service center, hierarchy, gravity model of gravity, the theory of central places, commodity circulation, a military town

This article presents the results of solving the problem of silting of the Krasnodar reservoir for the rational use of water resources of floodplain territories. The forecast of changes in sediment for the future is determined taking into account an increase in the overgrowth of the reservoir, further processing of the coastline, as well as a decrease in afforestation and an increase in cultivated areas in the river basin. Kuban. Given these factors, the increase in sediment volumes in the reservoir alignment will increase annually by 0.13% and by 2036 will amount to 18.01 million m3 per year. The main measures to improve the transport of sediment into the dead volume bowl are considered, and ways to solve the siltation problem by clearing the flooded riverbeds are proposed to be carried out by the method of stirring, since this method is used in reservoirs with flow, because its essence lies in the fact that silt sediments are agitated with the help of a floating dredger with water jets and the pulp is not sucked into the dredger, and suspended sediments are transported by the flow of water into the bowl of the "dead" volume of the reservoir. The use of this method is recommended for economic reasons, since it is 2.4 times cheaper than cleaning with pulp removal. The actual use of the Krasnodar reservoir is currently consistent with the design purpose. Sediment runoff in the river basin Kuban is determined by water erosion. Water erosion is especially pronounced in the mountainous and foothill parts, which is facilitated by the mountain-valley relief and large slopes of river channels. Precipitation falling on the underlying surface, in particular intense downpours, heavy snowmelt, debris material is washed off the catchment area into the river, forming a sediment runoff. An important role here is played by the composition of the rocks that make up the catchment, its afforestation, agrotechnical and water management measures carried out on the catchment area and in the riverbed.

Keywords: siltation, reservoir, water resources, floodplain territories, rational water use, water resources

The article presents an overview of the current situation in the field of energy saving of the Russian Federation. Topical issues of energy efficiency control of buildings and structures as an energy saving tool are considered. The proposed approach allows, while maintaining the General ideology of SP 50.13330.2012 "Thermal protection of buildings", to modify the scale of energy efficiency of buildings and structures, to make it comparable with similar scales adopted in leading European countries. A similar approach to solving this problem is implemented in order to move from the percentage deviation of the level of heat loss (from some basic value) directly to the specific level of these heat losses per unit area. The formula allowing to calculate both normalized and actual value of heat energy consumption for heating and ventilation of buildings is deduced. In the future, the above-mentioned formula is transformed into a formula that takes into account engineering solutions, both with a direct-flow ventilation system and with the use of a recuperative heat exchanger.

Keywords: heat supply, housing and communal services, energy efficiency, energy saving, energy efficiency scale, specific energy consumption, regulatory framework

This article is devoted to the problem of development of damping polymer materials with high damping properties in a wide temperature range. The purpose of this article is to study the loss factor and strength of polymer materials based on ethylene-vinyl acetate when additional polymers in the form of rubbers are added to them. The leading method to investigate this problem is the method of dynamic mechanical analysis, which allows to obtain information about changes in the dynamic properties of polymeric materials subjected to oscillating loads depending on frequency and temperature. According to established experimental dependences, it was possible to define the type of additional polymer expanding the temperature range of effective damping and increasing tensile strength of composites based on ethylene-vinyl acetate. The percentage content by volume of the additional polymer was established at which its efficiency on the dynamic and mechanical properties of composites on ethylene-vinyl acetate basis will be greatest.

Keywords: ethylene-vinyl acetate, polymer, chlorobutyl rubber, nitrile butadiene rubber, strength, damping, glass temperature, dynamic mechanical analysis

The article analyzes the space-planning decisions of dual-use facilities from which we can see their tactical purpose in emergency situations to increase the defense capability of the city and increase the security of living in it. The developed method of expert evaluation of the placement of multifunctional dual-use complexes, which depends on many parameters, is described. Given the above criteria, a system has been developed for a comprehensive assessment of the effectiveness of the deployment of multifunctional dual-use complexes.

Keywords: multifunctional complex, deployment, dual use, Armed forces, defense, construction

" During a long interruption of construction and installation works, as well as under the influence of the external environment on the unfinished construction of building structures, they are subject to a change in their properties and strength characteristics. To solve all problems, it is necessary to conduct a forensic examination in order to identify defects and assess the state of building structures and make decisions on the possibility and feasibility of completing construction work"

Keywords: construction in progress, expertise, defect, building construction, laboratory tests, design documentation, expert

The article presents theoretical studies of the effect of various plasticizers on the mechanical properties of epoxy compositions. Based on this, the method of plasticization of the epoxy polymer ED-22 was chosen using the introduction of modified epoxy resin UP-563, which differs from the previously used modified compositions for repairing automotive vehicles in the field the simplicity of the availability of modifications in the field and as providing the widest range of changes in the properties of the epoxy composition for USAGE field. The scientific novelty lies in the justification for the creation of a new repair composition consisting of ED-22 epoxy-diane resin modified by UP-563 laproxil for the repair of hull and capacitive parts of automotive equipment in the field, which has increased vibration resistance. frost resistance and impact resistance.

Keywords: epoxy composition, epoxy resin, restoration, automotive engineering, body part, chemical modification, oligomer, polymer

This article discusses the calculations of the feasibility study for the expansion of housing construction in Rostov-on-don. The main part of Rostov-on - don, where the vast majority of buildings are concentrated - the city center, residential areas, main production areas, special purpose facilities-are located on the high right Bank of the don. Active formation of new multifunctional planning areas of the city: North, West, North-East. Leventsovsky and Suvorovsky districts are under construction. For implementation of design decisions on development of housing construction in Rostov-on-don there is a need of an economic assessment of possible options that it is necessary to study in pre-project documents, such as the feasibility study of construction of objects.

Keywords: "feasibility study, Economics of urban planning, pre-project preparation, investment efficiency, urban planning, construction Economics, effective design solutions, design, housing construction, housing stock. environmental requirements, construction indu