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Key words:

program and target planning, the backpack task, research and development work, the State Armament Program

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The article proposes an approach to distribution of program-targeted activities for the development of weapons, military and special equipment within the framework of State Armament Programme (SAP) planning solved with the use of a multiple knapsack problem. The main idea of the author's approach is to formalize the problem of distributing limited budget resources between research and development efforts using the multiple knapsack problem, where each program activity (PA) is characterized by its efficiency, duration, and cost. An algorithm for solving the problem is proposed, based on the use of a modified «greedy» algorithm, including sorting PA by relative importance, their distribution over the planning area of the SAP, and checking intermediate solutions, which allows achieving maximization of the total efficiency of the SAP project under given constraints.

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Key words:

methodology, object of unfinished construction, optimization, efficiency assessment, capital investments, algorithm, restoration

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The article presents a methodology for optimizing the planning and allocation of capital investments to improve the efficiency of restoration and reconstruction of unfinished construction facilities in a limited period of time. At the first stage, the initial distribution of objects into groups is carried out. Next, the optimal distribution within the groups is selected according to the efficiency criterion based on the method of branches and boundaries. In conclusion, the remaining capital investments are redistributed to maximize recovery volumes based on a generalized algorithm. The methodology allows for the optimal allocation of capital investments for the effective restoration of facilities, taking into account the integrated performance indicator and forming a schedule for the restoration of facilities for the entire planning period.

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Key words:

automated radio communication network, preventive fault identification, forecasting, technical condition, maintenance

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The article presents the developed method of preventive identification of failures of elements of the automated radio communication network of the Armed Forces of the Russian Federation, which is applicable in predicting the values of the main controlled parameters, the type of technical condition and is necessary for the preventive identification of failures of the control object. The deviation of the observed metric from the nominal value is considered, both downwards and upwards, prohibited code combinations are identified in the description of the time series according to the dynamics of changes in the value of the controlled parameter and trends, taking into account the areas of pre-failure and parametric failure for timely decision-making on the management of parametric and/or hardware resources, as well as preventing a decrease in combat readiness of the entire networks.

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multi-interval connection establishing methodology, multiservice telecommunication traffic, multi-satellite orbital constellation

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The paper formalizes the relevance of the task of developing a methodology for establishing a multi-interval connection in multi-satellite orbital constellation. The paper presents a mathematical formulation of the problem of establishing a multi-channel connection in multi-satellite orbital constellation, providing information exchange between the sender and the recipient with specified geospatial coordinates.The methodology is presented, differed from known ones by taking into account the availability of the terrestrial backbone telecommunications infrastructure of the Earth station, planned to establish connection on the «spacecraft — Earth station» down line. The presented methodology can be used to evaluate characteristics of promising satellite communication networks focused on providing global high-speed information exchange.

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Key words:

electromagnetic compatibility, complex electromagnetic environment, bitmap image of the height map, digital 3D-terrain elevation map, spatial accessibility zone, radio relay communication lines

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The development of large cities and industrial centers leads to the presence of a complex electromagnetic environment. At the same time, it is not always possible to ensure electromagnetic compatibility of those already in operation with newly deployed radio-electronic equipment using the space-frequency diversity method. In this case, additional measures may be required to ensure the electromagnetic compatibility of radio-electronic equipment. A methodology and software package for constructing spatial accessibility zones have been developed, which make it possible to quickly solve the problems of choosing rational locations for radio-electronic equipment in a complex electromagnetic environment, the presence of sudden height differences and areas with undesirable geographical factors. An example of the application of the developed methodology to substantiate the locations of high-speed radio relay communication lines for the management of mobile formations in areas of natural disasters and man-made disasters is given.

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Key words:

networks, probabilistic-critical path, probability of work performance, probability reserves, project management, organizational and technical systems, multiplicative function, four-sector method

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The article discusses the method of determining the probabilities of performing a set of works modeled using networks. The authors propose an approach based on the multiplicative probability function, which allows you to identify the probabilistic-critical path and analyze the reserves of the probabilities of performing work. Described is a foursector method for calculating the lowest and highest probabilities of events, as well as probability reserves. Examples of calculations and comparison of critical paths in time and probability are given, demonstrating their possible mismatch. The method is tested in computational experiments and can be used to control work complexes in organizational and technical systems.

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Key words:

electric rocket engine, thrust, orbital maneuver, polar coordinate system

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The article considers a methodical approach to estimating the required thrust for a flight between coplanar circular orbits using an electric rocket engine (ERE) for a given time. Analytical dependencies of the ERE thrust on the flight time between circular coplanar orbits and the current radius on the polar angle are derived. The obtained dependencies can be used to study the orbital dynamics of a spacecraft under the action of continuously applied thrust of an electric propulsion engine acting along the velocity vector. The presented dependencies are obtained relative to the polar coordinate system.

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Key words:

multilayer polymer coating, internal stresses, residual stresses, coating structure, cantilever method, deflection boom

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Internal stresses significantly affect the condition of the polymer coating of special-purpose equipment. The magnitude of the internal stresses is determined by the shrinkage applied to the base (substrate) of the polymer composition. High internal stresses degrade the functional properties of the polymer coating, lead to an increase in defects, and shorten its service life. An expression is obtained for estimating the internal stresses in a polymer coating along the bending radius of a cantilever beam, taking into account the Young's modules and the thickness of the polymer coating and the metal base. The magnitude of the internal stresses depends on the layered structure of the polymer coating. The theoretical determination of internal stresses in single-layer and multilayer polymer coatings of the same thickness is carried out according to the expression obtained and according to the expressions proposed by other researchers. It is shown that with the same thickness of the polymer coating, the internal stresses in the six-layer coating are 14,7 % less than in the single-layer coating.

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Key words:

educational and training tool, entrance control, competence

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The article considers one of the problematic issues of substantiating the appearance of educational and training facilities for retraining (advanced training) specialists working in the same field, but on specialized automation complexes with different composition and technology of information processing (modes of operation). The proposed approach to creating an input control model for an educational and training tool makes it possible to form a dynamic competence-oriented task for the acquired competencies (to know, be able to own, apply) based on a dynamically created test scenario, while evaluating knowledge not in the generally accepted five-point system, but on the basis of an assessment of their proficiency. The practical significance lies in the suitability of the developed scientific and methodological apparatus for solving the tasks of training specialists in the same field, but in different fields of activity.

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Key words:

range tests, air blast wave, improvised explosive device, safe distance for people

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The article presents methodological recommendations for ensuring the safety of people in terms of the parameter of causing barotrauma by an air blast wave when they are in the near zone from the Fountain explosion protection device with an improvised explosive device placed in it containing an explosive charge, the mass of which in TNT equivalent is unknown and is approximately determined based on the subjective expert opinion of a specific explosive expert. Based on the results of field tests, safe distances for people to be located in terms of the parameter of causing barotrauma by an air blast wave when detonating TNT charges, the mass of which is 2–3 times greater than the standard values for each product, in the Fountain-1 explosion protection devices of models 05K, 10K, 20K and Fountain-2 of models 05U, 10U were obtained.

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Key words:

remote sensing of remote sensing of the earth’s surface, systems and networks of mass service, resources of complex processing, complex processing, databases, management of complex technical systems, a single technological data processing cycle

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The article presents a methodological approach to planning the complex processing of remote sensing data of the Earth’s surface in systems for monitoring potentially hazardous natural and man-made processes. The growing number of monitoring objects requires rational allocation of limited resources to ensure timely and complete task execution. The proposed approach takes into account the current workload and capabilities of the resources, based on an analysis of the system’s current state. A method has been developed to generate operational processing plans considering task priority and completeness criteria. An integral indicator of the monitoring system’s efficiency is introduced.

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Key words:

armored vehicles, tanks, armor protection, laser warning receiver, stripphotodetector, IR-range

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Over decades of development, laser illumination indicators have become an essential element of armored vehicle protection systems against guided weapons. Based on their research, the authors propose a design for a tank indicator with increased sensitivity and interference immunity to ensure reliable detection not only of pulsed radiation from laser rangefinders and target designators, but also of modulated radiation from weapon guidance systems. The main elements of the indicator are a photosensitive element in the form of narrow strips of small size, paired in differential signal comparison circuits, a fast spherical concentric objective based on two lenses with a large entrance pupil area, and a special electronics unit for signal analysis and processing. A distinctive feature of this technical solution may also be its relative simplicity of design and minimal cost.

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kinetic striking element, efficiency, manpower, personal armor protection means, imitators

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The article analyzes the features of using criteria of damaging action and non-biological models to assess the effectiveness of damaging elements against open manpower and manpower in personal armor. The need to replace 25,4 mm thick pine boards used as a nonbiological model of open manpower with 10 mm thick plywood boards is substantiated, especially when studying the wounding effect of kinetic damaging elements against manpower in personal armor. Statistical models are obtained that allow the joint use of the results of assessing the damaging effect of kinetic damaging elements using non-biological models, which include 25,4 mm thick pine boards and 10 mm thick plywood boards.

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Key words:

satellite radio link, energy reserve, transmitting device power, unintentional interference, interference frequency coverage ratio

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The article describes a methodical approach to calculating the energy reserve of the Earth- Space satellite radio link under conditions of unintentional narrow-band noise interference. Using binary frequency-shift keying and non-coherent detection signals as an example, the dependences of the obtained level of radio link energy reserve on the interference overlap coefficient by frequency are presented. The studies were conducted using analytical and simulation modeling for different carrier frequencies and with different requirements for the bit error probability. As part of the solution to this problem, it was shown that when exposed to unintentional interference of the same power, but concentrated in a part of the signal spectrum, a more negative effect is observed than when interference is present across the entire reception band.

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heat-resistant foam concrete, refractory adhesive, flue structure, coefficient of temperature linear expansion, joint work of materials

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The paper considers the possibility of increasing the durability of the launch facility flue structure due to the developed technical solutions for the use of heat-resistant foam concrete products with specified properties fixed on refractory glue. It is proposed to take into account the different signs of the coefficient of temperature linear expansion of these materials (CTLE of heat–resistant foam concrete is a negative value; CTLE of refractory glue is a positive value) in order to improve the quality of their joint work in the flue structure. The calculation of their joint work with and without CTLE is shown. It is established that when taking into account the different signs of the CTLE value of the proposed materials, their most rational use occurs in the design of the launch facility flue. The calculation is performed for three product sizes: 600×600×100, 800×800×100, 1000×1000×1000 mm.

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Key words:

polymer coating, durability, imperfection, layer-by-layer application, stress concentrator, internal stresses

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The reliability and survivability of special-purpose equipment depends on the condition of the polymer coating performing various functions. The quality indicators (strength, heat resistance) and functional properties of the polymer coating deteriorate over time. Therefore, it is important to solve the problem of increasing the durability of polymer coatings. The relationship between durability, operating temperature, and acting stresses in a polymer coating, and the physical constants of the polymer that determine them, is shown. The analysis of the causes of internal stresses in the polymer coating, as well as ways to reduce them, is carried out. The effect of macroscopic concentrators and polymer coating defects on the stresses acting in it is analyzed. The effects that cause an increase in the quality of the polymer coating during its layered application are considered. An increase in the durability of layer-by-layer polymer coatings of specialpurpose equipment has been scientifically substantiated.

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tent structure, enclosing structures, thin-layer thermal insulation coatings, temperature conditions, reduction of heat loss, innovative paint materials, composition and components of mixtures, diffusion and convective thermal process

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The article presents a methodical approach that allows choosing a thermal insulation option for enclosing structures of a tent structure, based on the use of innovative paint coatings to create an integrated effect of thermal insulation and heat reflection of the outer coating of the tent structure from the heat flow operating inside the units and heating systems. Thermal insulation of the enclosing structures of a tent structure is achieved by carrying out a set of measures, the purpose of which is to maximally preserve the temperature regime of the internal volume necessary for the implementation of various technological processes and a comfortable stay of the personnel working in it. While maintaining traditional methods of thermal insulation of enclosing structures, measures with the widespread use of new thinlayer thermal insulation coatings (TTI) to create an integrated effect of thermal insulation and heat reflection come to the fore.

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hazards, occupational risks, risks of damage to health, hygiene, safety of military service, management system, military personnel

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This article provides data on the analysis of the security system of military service in the Armed Forces of the Russian Federation in terms of potential readiness to manage professional risks, preventing the appearance of undesirable results in advance (for example, injury, death of a serviceman, etc.). It has been established: as of today, the army and navy of our country have not yet been fully established appropriate conditions for the transition to a qualitatively new level of ensuring the safety of military service for military personnel, namely, occupational risk management. The military administration bodies of a military unit (organization) are in a very difficult position: despite the specific goals and objectives set, they still do not have the necessary and sufficient resources to achieve them, in particular, this concerns conducting instrumental and laboratory studies of military service conditions, which cannot be dispensed with, since they allow them to provide accurate and reliable answers in the process of identifying harmful and/or dangerous factors.

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