Authors

Key words:

investment, project, probability, financial resources, design, decision making, enterprises.

Annotation:

The problem of choosing the option for implementing investment projects is considered, taking into account the multiplicity of stages of their execution and a priori risk assessment based on determining the balance between the probability of achieving the required (set) project parameters and the amount of financial resources required for its payment. The project preference coefficient is introduced, which is characterized by a normalized cost expression of the excess of the average amount of the Customer’s funds spent on achieving a useful result over the average amount of his funds spent in vain. The method allows you to determine the most critical stages of work, the implementation of which may affect the decision to select a project option.

Pages3-7

Code UDC:УДК: 334.021

Authors

Key words:

heat supply, energy security, accidents, reliability, survivability, safety.

Annotation:

The article analyzes the main issues of research of the problems that have arisen today in the heat supply, considered from the point of view of energy security of the state. The article presents characteristic classes of security threats, taking into account the specifics of many cities in the European part of Russia and Western Siberia. We also consider the issues of reliability and survivability of life support systems in General and in particular of heat supply systems, as well as their operation in the event of natural and man-made emergencies. The main directions of improving the heat supply complex are shown, but they do not cover the entire variety of possible measures that can be supplemented based on the energy audit of specific systems. The data provided in the article allows us to conduct a qualitative assessment of energy security.

Pages8-15

Code UDC:УДК: 697.34

Authors

Key words:

electronic library, state space, quality indicator, information security, evaluation, mathematical model, state change process, Markov chain.

Annotation:

The article is devoted to modeling the functioning of electronic libraries of educational and scientific institutions of Russian law enforcement agencies in the interests of analyzing their quality and information security. In the article, the author tries to formulate a new approach to modeling electronic libraries. the proposed model is based on continuous Markov chains and allows us to obtain the current interval values of quality and information security indicators of electronic libraries, taking into account the dynamics of changing their discrete (finite or countable) states in continuous time. This model is a basic element and source of initial data for the methodology developed by the author for the multi-criteria analysis of the quality of digital libraries using the methods of the theory of interval means.

Pages16-22

Code UDC:УДК: 025.2.004; 621.311.23: 629.12

Authors

Key words:

passive exoskeleton, torsion springs, tension-compression springs, variable-length link, man-machine system, energy recovery, differential equations of motion.

Annotation:

A model is proposed on the plane of a passive exoskeleton with torsion and tension-compression springs. Exoskeleton links can change their length. The link has the following design: in the center of the link there is a section of variable length, which is weightless with a tension-compression spring, and at the ends of the link there are two sections of constant length having mass. In each hinge that provides rotation of one link relative to another, a torsion spring is installed. Since sections of constant length are introduced into the exoskeleton design, protective plates can be mounted on them that can protect the soldier during the execution of the combat mission from external damaging elements, and, from the point of view of dynamics, the exoskeleton design will not be complicated, only the inertial characteristics of the links will change exoskeleton. The analysis of the influence of passive exoskeleton on the dynamics of human movements.

Pages23-31

Code UDC:УДК: 531.3

Authors

Key words:

simulation modeling, special-purpose transport communication network, network availability factor.

Annotation:

The article presents the formation of a model for the functioning of a special-purpose field transport communication network, taking into account the impact of destabilizing factors, based on a level architecture, in which, in accordance with the reference model of interconnected open systems, the physical, channel, and network levels are distinguished. The model of the network functioning is proposed to be formed for each level separately with the possibility of further combining the results for the remaining levels of the network. The results of simulation modeling of the functioning of the field transport communication network for special purposes, taking into account the impact of destabilizing factors, are presented. The model takes into account the impact on the duration of the network object recovery cycle. The estimation of the coefficient of serviceable operation of a special-purpose transport communication network is obtained by statistical tests.

Pages32-38

Code UDC:УДК: 519.876.5

Authors

Key words:

electromagnetic ammunition, electromagnetic damage, non-lethal weapons, delivery accuracy, area target, affected area.

Annotation:

The analysis of the influence of the accuracy of delivery of electromagnetic ammunition on the effectiveness of hitting area radio-electronic targets is carried out. The average relative affected area was used as an efficiency indicator. It is established that in the case of small compared to the size of the target or comparable average square deviations of misses of electromagnetic ammunition, elliptical scattering can be replaced by circular with acceptable accuracy. For circular scattering, an approximate analytical expression of the average relative affected area is obtained. A method has been developed to justify the requirements for the accuracy of delivery of electromagnetic ammunition. The boundary values of the mean square deviations of misses of electromagnetic ammunition are determined, which provide high efficiency of hitting small compared to the affected zone and comparable to it in size area targets.

Pages39-46

Code UDC:УДК: 623.4.01

Authors

Key words:

tank, power reserve, fuel efficiency, power plant, engine, mechanical losses, oil temperature, oil viscosity.

Annotation:

The article presents a mathematical model that allows a preliminary assessment of the effect of oil temperature on the value of mechanical losses of the V-92S2 engine, and, as a consequence, on the value of specific effective fuel consumption. The mathematical model is supplemented with an equation for determining the relative change in the power of mechanical losses of a diesel engine. Using the presented mathematical model, the reserves of reducing the specific effective fuel consumption when the thermal state of the engine changes. The well-known mathematical models describing the effect of oil viscosity on the value of mechanical losses in an internal combustion engine are briefly considered.

Pages47-53

Code UDC:УДК: 623.1/.7

Authors

Key words:

automated military information systems, cryptographic recursive control of information integrity, metadata management, metadata integrity, hash function, insider, data chain recording technology, registry.

Annotation:

The article presents a method of cryptographic recursive 2-D control of the integrity of metadata files of electronic documents processed by automated information systems for military purposes, as well as the results of its application. The proposed method is based on the technology of chain data recording, which is a dynamic register, where entering information into metadata records is allowed without changing the previously entered information. The purpose of the methodology is to develop recommendations for organizing a cryptographic recursive 2-D control of the integrity of metadata of electronic documents based on the technology of chain data recording. Implementation of the received recommendations will provide the required level of security of metadata records, which is a necessary condition for maintaining the integrity of electronic documents.

Pages54-62

Code UDC:УДК: 004.056

Authors

Key words:

cyberspace, computer attack, communication network.

Annotation:

Тhe integration of communication networks into the global cyberspace has led to an increase in the number of computer attacks on communication networks by both single hackers and cyberterrorists, as well as organized communities. A large number of attacks on communication networks has led to an increase in the volume of destructive traffic generated during the attack, which negatively affects the network nodes that are forced to process it during the transfer from the source of the attack to the object of impact. This article discusses how to protect servers of communication network services from computer attacks. The proposed method reduces the destructive load on all network elements and the probability of indirect suppression of network elements by consistently and reasonably changing the «Black» list of IP addresses and adjusting the filtering rules on «n» interconnected firewalls located on geographically separated network elements.

Pages63-67

Code UDC:УДК: 007

Authors

Key words:

especially dangerous and technically complex objects, complex disguise, imitation, the assessment of efficiency.

Annotation:

The article discusses measures to improve the security of particularly dangerous and technically complex objects. The main activities under the disguise of such facilities adopted measures aimed at reducing the appearance of specific giveaways on the basis of which the ordnance select the object ground from the crowd. The necessity of developing a mathematical apparatus that allows obtaining numerical values for evaluating the effectiveness of planned or conducted simulation activities is justified. The task of personnel of such objects during the corresponding masking measures is defined. The conclusion is made that the mathematical apparatus for evaluating the effectiveness of measures to improve the security of objects should be further developed, taking into account the optimization of capital investments for their implementation.

Pages68-74

Code UDC:УДК: 623.09

Authors

Key words:

radio source, unmanned aerial vehicle, distance-difference method, location determination.

Annotation:

This article describes a method for determining the location of a radio source located on the Earth’s surface, a grouping of three unmanned aerial vehicles based on the difference-rangefinder method. The factors of applicability of this method are revealed and the estimates of the accuracy of determining the location of the radio source for various flight heights of the group of unmanned aerial vehicles, the distances between them, as well as the distance of the radio source from the point corresponding to the center of the joint radio visibility zone of the group of unmanned aerial vehicles are given.

Pages75-80

Code UDC:УДК: 621.396

Authors

Key words:

nuclear power plant, nuclear hazardous facility, physical protection system, threat, complex of engineering and technical means of physical protection, engineering and technical barriers, physical barriers.

Annotation:

The article presents the problem of the need to ensure a reliable system of physical protec­tion of nuclear facilities. A solution is described based on the project for the organization of physical protection of the Leningrad nuclear power plant, implemented by JSC NPO Special materials. Examples of equipment that make up the complex of engineering and technical means of physical protection of the Leningrad NPP, manufactured by JSC NPO Spetsmaterialov, are presented.

Pages81-87

Code UDC:УДК: 621.311.25

Authors

Key words:

torpedo weapons, homing systems, torpedo weapon control, torpedo types, US Navy arming, US Navy equipment.

Annotation:

The presentation analyses torpedo weapons adopted in the US Navy. The authors consider in detail torpedo guiding systems such as telecontrol, homing, and active-passive self-homing. The work presents advantages and characteristics of fiber-optic cables used in those systems instead of traditional single-core cables. The authors addresses main type of torpedoes based on various principles and homing systems adopted in the US Navy, including those used phased array antenna, and presents main directions of updating and modernization of US Navy torpedo homing systems and control.

Pages88-93

Code UDC:УДК: 623:946

Authors

Key words:

military vehicles, technical operation, functional operation, diagnostic model, average recovery time, average delivery time for spare parts.

Annotation:

We are currently forced to live in a constantly evolving and rapidly changing world. It can be stated with confidence that the threats faced by the Armed Forces are also changing and require flexible approaches to transformations of strategy and tactics. These transformations are impossible without improving the technical characteristics, changing the range of operational requirements for military equipment, including automobiles. Modern samples of technology must meet the requirements for their versatility, unification, multitasking. In turn, this led to an increase in the number of functional systems and devices of a single car, to an expansion of the range of standard parts, to a significant increase in their total number in a product, as well as to an increase in the number of parameters that determine the technical condition and require control, which generally complicates operation. military vehicle equipment.

Pages94-103

Code UDC:УДК: 355/359.07

Authors

Key words:

recovery, recovery queue, military communications equipment and automated control systems, sample weight, repair time.

Annotation:

The article substantiates the need to develop a methodology for forming a rational queue for repairing military communications equipment and automated control systems (MCE and ACS) when performing special tasks. The current views on the procedure for restoring MCE and ACS in the guidance documents are considered, and the existing problems are identified to solve which the method is being implemented. The concept of «significance» of the MCE and ACS sample is introduced and the order of its formation is considered. The procedure for forming a rational recovery queue during the period of military operations, as well as after its end, has been developed.

Pages104-108

Code UDC:УДК: 623.355/359

Authors

Key words:

engine start-up facilitation tool, start-up reliability assurance, gas-electricflare device, cold climate negative temperature conditions, intake manifold, fuel combustion completeness.

Annotation:

The article discusses the possibility of ensuring a reliable start-up of a diesel engine operating under negative temperatures in a cold climate, due to the use of a gas- electroflare device (GEFU) and light fractional fuel as a means of facilitating start-up. The use of this device provides a decrease in the limiting temperature for starting a diesel engine, reduces the time for starting and reaching load modes, which is positively related to the service life, and also improves its environmental tactical and technical characteristics. Empirically, a comparison was made of the efficiency of a standard electroflare device (EPF) and a new design of a gas- electricflare device (GEFU), the results of which confirm the effectiveness of using GEFU as a means of facilitating the start of a diesel engine in conditions of low temperatures in a cold climate.

Pages109-114

Code UDC:УДК: 621.4

Authors

Key words:

large deployable antenna, adaptive phased array antenna, geometric distortion compensation, alignment.

Annotation:

The article describes a method for adjusting large-sized AFAR using a third-party source of the reference (alignment) electromagnetic field with a flat wave front, which is a transmitting antenna located in the far zone of the controlled AFAR in special correction points located on the ground. Unlike previously proposed, the method of adjusting the design of large AFAR is to compensate not only violations of thermal and dynamic loads, but also of deviations in the orientation of the antenna caused by errors in the orientation of space platforms on which they are installed, and damped oscillatory processes caused by transient mechanical effects on large AFAR in space. The article also presents requirements for the reference adjustment signal to ensure noise immunity and secrecy of the adjustment process.

Pages115-126

Code UDC:УДК: 621.396.67

Authors

Key words:

experiment, gas turbine engine, harmonic, spectral pattern, vibration ac­ce­le­ration, operating time.

Annotation:

The article provides a preliminare study of the nature of vibration on the bearing housing of the compressor stage of the 9I56 gas turbine engine and qualitative determination of trends in its changes as the operating time of bearings in the gas turbine engine increases.We consider the tools and equipment used to achieve individual qoals of forecasting of the state by studying the transformation of mechanical vibrations of the controlled object into an electrical signal proportional to the vibration acceleration of the mechanical system.The analysis of statistics of the received preliminare data is carried out and the study of evidence of a steady upward trend vibration acceleration amplitudes with simultaneous increase in the number of multiples harmonics as the operating life of the bearing increases in the 9I56 gas turbine engine.

Pages127-132

Code UDC:УДК: 623.658.7

Authors

Key words:

Siberian electronic customs, Siberian customs post, emergency situation, software, monitoring, declaration on goods, optimization model.

Annotation:

This paper provides an analysis of the initial stage of the implementation of the communication monitoring system in the customs authorities of the Siberian Customs Administration, which is a fundamental tool for optimizing communications using the example of the Siberian Electronic Customs. Also, within the framework of this study, the authors presented the practical implementation of the model of optimizing communications of the customs authorities of the Siberian Customs Administration, which allows us to consider an effective approach to eliminating abnormal situations in the operation of software, which in turn will ensure compliance with the deadlines for customs operations. Statistical data of submitted declarations for goods. The process of reproducing the operation of the communication monitoring system is reflected.

Pages133-142

Code UDC:УДК: 346:656+621.38

Authors

Key words:

product conformity assessment system, testing, control, acceptance, exa­mi­nation of technical documentation, decision to use imported products, mandatory product certification.

Annotation:

The report considers the basic requirements for the conformity assessment and the forms of conformity assessment of products manufactured at NPO Spetsmaterialov JSC at the stages of its life cycle and used at nuclear power plants, structures and complexes with research nuclear reactors, critical and subcritical nuclear stands, as well as systems non-destructive testing, complexes of engineering and technical means of physical protection of nuclear materials, nuclear installations, storage facilities for nuclear materials.

Pages143-149

Code UDC:УДК: 621