Authors

Key words:

internal ballistics, the main problem of internal ballistics, OZVB, thermodynamic approach, calculation methods

Annotation:

The methods for solving the basic problem of internal ballistics in the thermodynamic formulation are considered. The examples of the most famous methods of N.F. Drozdov and B.V. Orlov show their widespread use in engineering practice due to sufficient simplicity and acceptable accuracy of calculations. A more recent technique for solving the main problem of internal ballistics, developed by Yu.P. Platonov, which has an advantage in calculations of automatic rifle and cannon systems. The order of preparation of initial data for calculations according to this technique is proposed and the solution of the test basic problem of internal ballistics for a large-caliber small arms system is given, the results of which confirmed the good accuracy of the calculation in comparison with the results of the ballistic experiment perform ed.

Pages3-11

Code UDC:623.535

Authors

Key words:

shot dynamics, shooting accuracy, shot errors, risk management

Annotation:

Representations of physical and statistical patterns in the information environment of tactical and technical characteristics and their determining factors determine the completeness of the disclosure of the links of tactical and technical characteristics and system indicators of tank artillery armament samples and provide the preparation of initial data for the task of dynamic analysis of the «shot — gun» system in a statistical formulation, as a task of parametric reliability and risk management. The model of the «cannon — shot» system is considered, according to which calculations were carried out using the Euler software package and the influence of the straightness of the barrel bore on the formation of the individual angle of departure of the cannon and the spread of the angles of departure due to the spread of the parameters of the shot was determined.

Pages12-21

Code UDC:623.4.017:005.334

Authors

Key words:

multi-criteria assessment, fragmentation field, registration system, recording cluster, space debris

Annotation:

The article proposes a methodological approach to substantiate the parameters of the system for recording a non-barrier fragmentation field. As an example, the work considers a system for registering a non-barrier fragmentation field, used as part of an experimental ballistic complex. Indicators and generalized criteria used to assess the quality of the system for recording the non-barrier fragmentation field are formulated. A simplified algorithm for assessing the quality of the systems under consideration is presented. The implementation of a multi-criteria approach to the problem being solved is shown, which makes it possible to determine the best one by sequentially narrowing the many different design options for the recording system. The proposed methodological approach can be used to justify the parameters of systems similar in construction.

Pages22-28

Code UDC:620.17

Authors

Key words:

optical transport network, lightpaths, transmission quality, spectrum allocation

Annotation:

Modern optical transport networks are built on the basis of spectral densification technologies and have the ability to programmatically control optical channels. When designing these networks, routing and spectrum assignment problems for composite optical channels, called lightpaths, are solved. Existing lightpath models are mostly descriptive or limited to routing without taking into account the assigned frequency range. To improve the efficiency of spectrum resource management in optical transport networks, a mathematical model of a lightpath is proposed in this paper. On the basis of the model it is possible to solve the subproblems of light path routes search taking into account the requirements for non-intersectivity of spectra, contiguity of elementary frequency intervals of each light path, continuity of spectrum on the whole route and finding within the limited spectral resource of the network.

Pages29-36

Code UDC:621.391

Authors

Key words:

multi-position radar, barrage unmanned aerial vehicle, simulation

Annotation:

The article considers two approaches to the construction of a tracking filter in multi-position radar tracking systems of barraging unmanned aerial vehicles. The first approach is based on the direct application of the extended Kalman filter algorithm to a single composite measurement vector. The second uses the recalculation of measurements into a common coordinate system using an unscient transformation and their further sequential processing using recurrent algorithms. The article presents the disadvantages of the first approach in its practical implementation and substantiates the advantages of the second approach, which make it possible to overcome the identified difficulties. The article presents the results of simulation modeling of the operation of both described algorithms, which show equivalent estimation accuracy in both cases.

Pages37-43

Code UDC:621.396.969.35

Authors

Key words:

optimization, adaptive control, functionality, detection, infrared range

Annotation:

Infrared tracking and detection systems can be used during military operations against combat aircraft, tanks and other fire systems. The purpose of this article is to explore the possibility of using adaptive control principles in infrared detection systems to improve their technical characteristics. The task of adaptive control of the aircraft detection and tracking system has been formulated. To solve the problem by the method of variational optimization, the introduction of a focal length control function depending on atmospheric transmission is proposed. Under the condition of imposing some restrictive condition on this function, the problem of unconditional variational optimization was formulated, the solution of which gave a specific type of this function, in which the target functional under study reaches a minimum. It is indicated that such a minimum can significantly complicate the execution of the detection operation and a recommendation is given to avoid this detection mode in practice.

Pages44-48

Code UDC:681.7

Authors

Key words:

«grey zone», psychophysiological weapons, MKUltra program, psychotropic drugs, microwave radiation, «havana syndrome»

Annotation:

The article represents the analysis of the USA scientific researches results, aimed at the establishment of psychophysiological means of destruction. We paid special attention to the results of the researches of psychotropic drugs impact and microwave radiation impact on the people, obtained during the MKUltra program realization and their usage in terms of further creation of psychophysiological weapons. The article shows different ways of psychophysiological weapons application introduced by the USA and NATO administration within different Grey Zone projects in current military and political situation. The author gives his point of view regarding the abnormal health incidents occurred to some US government employees, which were named as «Havana syndrome». The main aims and directions in respect of creation of counteraction system to technical means of psychophysiological impact are proposed.

Pages49-57

Code UDC:623.454.8

Authors

Key words:

optical transport networks, dedicated spectrum resource, lightpath, reconfigurable optical input and output multiplexers

Annotation:

The article proposes a mathematical model of optical transport networks of specialpurpose communications providing optimization of the allocated spectral resource, analysis of optical network capacity and channel structure synthesis. The construction of optical transport networks of special purpose uses the allocated physical resources of telecommunication operators of the unified telecommunication network of the Russian Federation. A number of technological advances aimed at increasing the efficiency of spectral resource utilization and flexibility of optical networks have contributed to the fact that the architecture of modern transport communication networks of large operators is formed in a new technological basis. Built on new physical principles, optical transport networks of special purpose represent a new object, for the study of properties and characteristics of which, it is necessary to develop a mathematical model.

Pages58-64

Code UDC:621.391

Authors

Key words:

information protection from unauthorized access, authentication, multithreaded data processing, microservice architecture, microservice, data bus, modular access manager, data bus access manager, data bus adapter, security adapter, security center

Annotation:

A practical approach to ensuring the protection of information from unauthorized access during its multithreaded processing based on the data bus in mission-critical automated systems is presented, based on the use of a modular access manager of special software using a distributed, microservice and hybrid architecture of construction, and operating in the environment of the Astra Linux Special Edition operating system. The expansion of the 7-level OSI model for managing the differentiation of user access to distributed shared resources of a single information space is considered. The composition and functioning scheme of a modular access manager of special software providing unified and centralized control of user access to distributed shared resources of a single information space are described.

Pages65-75

Code UDC:004.056.5

Authors

Key words:

group goal, the target of the attack, attacking ammunition

Annotation:

A mathematical model of the method of estimating the direction of an attack object in a group target has been developed and analyzed. The method is based on the formation of the flight path of an attacking munition based on the results of location measurements, and the prediction of its position in the picture plane of a group target using the least squares method. The object that is closest to the predicted trajectory is taken as the object of attack. The model allows conducting studies of the accuracy of determining the object of attack depending on the parameters of fluctuations in the trajectory of the attacking munition, the parameters of the geometric scheme of its application, the intensity of observation noise and the number of measurements. The results obtained will be useful in the development and analysis of the effectiveness of information subsystems of complexes for the active protection of objects from highprecision weapons.

Pages76-80

Code UDC:623.54

Authors

Key words:

special-purpose devices, electromagnetic radiation of different spectrum ranges, efficiency of radiation use, specific features of radiation application in different media, light curtain, pouring light curtain of protective laser device

Annotation:

Analysis of the use of radiation sources of various wavelengths in special-purpose devices, including non-lethal weapons, protective, reconnaissance devices and guidance systems, was carried out. Specific features of electromagnetic radiation of different spectrum ranges and efficiency of its application are considered taking into account specific features of radiation, environment of its application, including water, and object of influence. The effectiveness of using UV radiation, including the sun-blind range, infrared radiation and visible light to protect and mask objects, including UAVs, is shown. A protective device is presented that forms light in the form of a light curtain with mixed RGB laser radiation, designed to disrupt the orientation of an enemy drone and possible damage (blinding) to its optical-electronic surveillance systems (cameras).

Pages81-88

Code UDC:623.4

Authors

Key words:

protection class, slats, burglary resistance, roller shutters

Annotation:

Based on an analysis of the designs of existing roller shutters, their main disadvantages have been identified, limiting their resistance to burglary. It has been established that the promising design of roller shutter lamellas should be composite and include materials of different structure and characteristics in order to reducing the productivity of the cutting tool used when testing roller shutters for burglary resistance. A design for the lamella of roller shutters is proposed, consisting of the following protective structures: the outer wall of the lamella, a non-metallic insert, a metal insert in the internal cavity and the inner wall of the lamella. The effectiveness of the proposed lamella design has been confirmed experimentally (burglary resistance class not lower than P7 according to GOST R 50862- 2017) and is protected by a patent for the invention.

Pages89-96

Code UDC:623.4

Authors

Key words:

microelectromechanical accelerometer, initial velocity estimation

Annotation:

The article deals with the methodology of increasing the effectiveness of an artillery projectile for rifled gun during direct fire via correcting the time of remote fuse operation by means of estimating the initial velocity of the ammunition. It is shown that direct measurement of an acceleration or angular velocity of the projectile is impossible due to the insufficient range of sensor values. Microelectromechanical accelerometer utilization is proposed to estimate the angular velocity of the projectile and calculate the initial velocity of the projectile by estimating the angular velocity. A simulation model of projectile motion with accelerometer located at a small distance from the center of mass of the projectile is developed. The accelerometer readings during the projectile motion are studied and an algorithm for their processing is developed to estimate the angular velocity and, as a consequence, the initial velocity of the projectile.

Pages97-102

Code UDC:531.768

Authors

Key words:

power supply system, protected vehicles, command controllability, military automotive equipment, software and hardware complex

Annotation:

The article presents the requirements for protected vehicle, which are subject to the requirements of command control, and an analysis is performed based on the use of military vehicles during a special military operation. Promising directions for the development of protected vehicles are considered, to which the requirements of command controllability are presented, which are implemented by installing automated systems on a simple, including a software and hardware complex, an on-board information and control system, and a complex of automated control communication tools. The relevance of ensuring the electromagnetic compatibility of the power supply system with a complex of automated control communication tools in the development and modernization of samples of protected vehicle, which are subject to the requirements of command controllability, is substantiated.

Pages103-108

Code UDC:623.4.011

Authors

Key words:

automotive equipment, mechanisms, system, sensor, database

Annotation:

It has been proven in science and confirmed in practice that the reliability of military automotive equipment is significantly influenced by the quality of maintenance and routine repairs. In order to correctly perform the above work, it is necessary to identify and prevent the occurrence of a defect in the mechanism in a timely manner. The article presents proposals on the technology, method and technical equipment of a promising system for automatic diagnosis of the technical condition of the mechanisms of automotive equipment of the Armed Forces of the Russian Federation. The purpose, tasks and composition of the automatic diagnosis system are formed and the main technological techniques for implementing remote diagnostics of military automotive equipment mechanisms for assessing their actual technical condition in real time are substantiated.

Pages109-115

Code UDC:629.113

Authors

Key words:

guidance, missile guidance, guidance laws, beam-riding guidance, kinematic trajectories, movable control point, line-of-sight guidance, command to line of sight, threepoint guidance method

Annotation:

The article considers the problems of calculating the kinematic trajectories of guided missiles using beam-riding guidance, taking into account a mobile, including maneuvering, control point (as, for example, in the case of beam-riding air-to-surface missiles). The derivation of the expression of kinematic overload for motion in the «beam» emanating from the control point (carrier) is presented. The resulting expression for calculating the overload is suitable for modelling guidance using any guidance method (line-of-sight guidance, methods with straightening). A mathematical model for calculating kinematic trajectories in this case and the results of calculations using the line-of-sight guidance method are presented. This model can also be used for beam-riding missiles of other classes, both with a mobile and fixed control point and target.

Pages116-122

Code UDC:623

Authors

Key words:

single-layer functional coating, supersonic spraying, scale factor, strength, uniformity, probability of failure

Annotation:

The state of functional coatings of special-purpose equipment determines its reliability and survivability. An increase in the thickness of a single-layer functional coating leads to an increase in the probability of its failure due to a decrease in uniformity and an increase in the defect of the coating. The forming technology determines the thickness of a single-layer functional coating, at which it can be considered homogeneous. A method is proposed for estimating the probability of failure of a single-layer functional coating based on approximated experimental data on the destruction of samples when detached from the substrate. An experimental study of the effect of the thickness of a single-layer functional coating on the probability of its failure in terms of strength when detached from the substrate has been carried out. The relationship between thickness, uniformity and the probability of failure of a single-layer functional coating in terms of strength has been established.

Pages123-129

Code UDC:678.026

Authors

Key words:

UAV prototyping, additive technologies, mechanical properties of materials

Annotation:

Abstract. The possibility of using additive technologies for prototyping UAV components has been explored. A test program and methodology has been developed to determine the actual mechanical properties of materials used in additive manufacturing. It has been established that it is more appropriate to use FDM printing to print UAV components due to less time spent on printing the part and cheaper printing consumables, and for parts that require complex geometry and greater mechanical strength, it is better to use LCD printing. Tests were carried out on the mechanical properties of finished products printed on LCD and FDM type 3D printers. The test results were analyzed. The difference in the mechanical properties of products made from photopolymer resins is shown depending on the additional illumination time. New research problems in this area are planned for solution.

Pages130-136

Code UDC:623.4

Authors

Key words:

mechanism, mechanics of a deformable body, manipulator, grip, robotics

Annotation:

Currently, the issues of creating and researching remote interaction systems with objects of various shapes and purposes are among the most urgent. With the development of modern technologies, the possibilities of manufacturing manipulator parts and assemblies have expanded, which, in particular, leads to a significant reduction in the cost of gripping devices. At the same time, in modern robotics and mechanics there is a tendency to create mechanisms with an extra degree of freedom, which greatly simplifies the management and structure of the product. In this paper, we propose a design of an artificial finger with a simplified control system and an adaptive object capture system. A block diagram and dependencies for the synthesis of a lever structure are given. Strength calculations of the proposed grip have been carried out, allowing us to proceed to the design development of the product. Special attention is paid to the mechanics of a deformable solid in view of further work on the weight optimization of the structure.

Pages137-146

Code UDC:62-236.58

Authors

Key words:

artillery shell, destruction, fragmentation effect, high explosive effect, sandbag embankment

Annotation:

The issue of the peculiarities of the destruction of artillery shells in the immediate vicinity of military and civilian critical infrastructure is considered. It is shown that to ensure guaranteed safety of objects from the effects of fragmentation and high-explosive explosions, it is advisable to use explosion-proof elements. Based on experimental data, it was established that the use of explosion-proof elements in combination with the standard packaging of the projectile and embankment of sandbags made it possible to reduce the weight of the embankment by more than 12 times in comparison with embankment without the use of the protective structure «wooden box — explosion-proof elements» and more than 5 times compared to filling the projectile with soil (dry sand). In this case, the pressure in the front of the air shock wave decreases by more than 10 times. There are no shell fragments at a distance of 12 m from the explosion site.

Pages147-158

Code UDC:623.4