bluuebunny/crossref_metadata_2025_split huggingface dataset:
Model studies of systems with diagnostics based on fault simulation
Authors: Pankov D A , Denisova L A 
Published: January 2020

Abstract
The paper deals with the system diagnostics and search failures in the work of complex information systems. The question of using statistics to implement routing algorithms in the system is considered. The results of the experiment on defects detection of routing and control algorithms for information statistics devices are presented for the simulated system. Fuzzing technique is used to eliminate complex problems after failure detection. The set of requirements and components is defined for integrate node validation algorithms into the routing environment of the information system.
An experimental bench for testing the cracks detecting technology in the blades of working aircraft engines
Authors: Grinkrug M S , Balli M Kara , Tkacheva J I , Novgorodov N A 
Published: January 2020

Abstract
The work is devoted to the development of technology for detecting cracks in the aircraft engines blades during an airplane flight without stopping it. For these purposes, a method is proposed and an experimental installation is designed to verify it and obtain results for the application of this technology in practice. The main experimental tasks are set, which are planned to be worked out on this installation.
The use of inhibited layers to improve mechanical properties of thermoset composite materials
Authors: Protsenko A E , Telesh V V , Potkalov A K 
Published: January 2020

Abstract
The present paper discusses the research data on strength properties of polymer composite materials using fiberglass reinforced plastic (FRP) as an example. During the process of fiberglass reinforced plastic curing with the use of hot molding, a thermal gradient inevitably appears throughout the material thickness. This phenomenon results in uneven curing of prepreg layers. Internal stress consequently occurs in the material. It is proposed to control the kinetics of binder curing throughout the material thickness by introducing an inhibitor into the various prepreg layers. Multichannel dielectric analysis was used to study the curing kinetics of fiberglass reinforced plastic. It has been found that the time spread for gelation is 8.6 min in the 15-layer sample. The study of strength properties of the obtained samples demonstrates an increase in flexural strength of PCM-modified samples by 12.7% – 17.7% and a reduction in their anisotropy.
Quartz optical cells with alkali-metal vapour for aerospace
Authors: Khripunov S A , Kobtsev S M , Radnatarov D A , Andryushkov V A 
Published: January 2020

Abstract
This work for the first time analyses the impact of cosmic radiation on quartz cells with rubidium vapour and buffer gas, as well as the ensuing change in stability of atomic frequency standards (AFS) relying on such cells. It is demonstrated that the main effect consists in variation of partial pressure of nitrogen, which is a part of the buffer gas mix. This leads to degraded AFS stability. It was established by modelling that this effect is not significant because material degradation of the AFS stability is only likely to happen over a long period of time, as long as several decades. It can be concluded on the basis of the proposed analysis that a gas cell with rubidium vapour and buffer gas is the most reliable element of a satellite-borne AFS and that it is less affected by exposure to ionising radiation than electronic components of AFS.
Adaptive vulnerability detection model for unmanned vehicles drugs based on artificial immune systems
Authors: Skatkov A V , Bryukhovetskiy A A , Moiseev D V 
Published: January 2020

Abstract
The adaptive model and structure of the intrusion detection system (IDS) based on the analysis of traffic in the channel “UMV-dispatch center”, which is based on immunological principles, is proposed. Rules classify objects belonging to several classes at the same time with different degrees of belonging. Recognition of the state of network traffic is carried out in conditions of lack of a priori information about the properties of the intrusion source and the stochastic nature of the recognized events. To increase the level of reliability of intrusion detection in the system, adaptive dynamic adjustment of decision-making rules on classification and operational States of UMV traffic is performed.
Heat transfer coefficient of laminar rotational flow
Authors: Zuev A A , Arngold A A , Levko V A , Maksimov I A , Leonenkov A D 
Published: January 2020

Abstract
A model of the distribution of laminar temperature and dynamic boundary layers is considered. An integral relation is derived for the energy equation of the temperature spatial boundary layer, that allows integration over the surface of any shape, which is necessary for determining the thickness of the energy loss., The expressions for the thickness of the energy loss of the temperature spatial boundary layer are defined for the laminar flow. The expressions for the thickness of the energy loss are necessary to determine the local heat transfer coefficients for the characteristic cases of flow, taking into account heat transfer. Analytically, expressions are obtained for determining the local heat transfer coefficient in the form of the Stanton criterion for the rotational flow according to the law of a solid and the rotational flow of a free vortex. Local heat transfer coefficients are determined for laminar rotational flows.
Modelling race conditions in multithreading programs in terms of Petri nets
Authors: Kharitonov D I , Odyakova D S 
Published: January 2020

Abstract
The article describes an approach to detecting race conditions with respect to a variable in a program, based on the automatic construction of a program model in terms of Petri nets. A simple sample program having race condition is given and the analysis of its behavior shows four different results of execution due to the race condition. Compositional model of the program in terms of Petri nets is presented that illustrates the process of automatic model generation. Notions of program control flow, global area and environment models are introduced. Reduction rules for the control flow model are defined and compositional representation of reduced program model is described. The formula for detection of race conditions is defined as: for a race conditions to occur, it is necessary that between the moment a variable is read by a thread and the moment this thread writes to a variable, an event of writing to the variable by another thread may occur. Compositional model of global variable capable of intercepting writing to variable events that lead to race condition is presented. By synchronizing the program control flow model with the global variable model it is possible to detect race conditions by building the reachability tree and checking for the presence of error event in it.
Spacecraft reflector shape control
Authors: Bikeev E V , Matylenko M G , Shendalev D O , Vilkov Yu V , Sin’kovsky F K , Kolovskiy Y V , Kuklina A I 
Published: January 2020

Abstract
The paper considers a possible method of optimal controlling the mirror shape of a spacecraft (SC) large-sized reflector using the mechanisms affecting the reflector mirror shape in the course of its orbital operation. The authors give a theoretical justification for the applica-tion of the least squares problem and adapt the Gauss – Newton method used for solving it to the problem of the reflector mirror shape optimal control. Mathematical modeling confirmed the effectiveness of the method as applied to controlling the mirror shape of an umbrella type offset reflector with a diameter of more than 10 m, which includes a device for adjusting the reflector shape. The main issues of the method implementation are outlined in relation to the on-board system for monitoring the operational characteristics of a large-sized transformable antenna. The paper shows that the considered method can be used to control the operational characteristics of antennas with large-sized reflectors by affecting their geometric characteris-tics, namely, by bringing the reflector mirror shape to the desired profile. It is noted that in the context of meeting high requirements for the accuracy of the onboard antenna geometry, the use of the method will ensure the stability of the onboard antenna geometry and minimize the degradation of the antenna radio technical characteristics during orbital operation.
Research results of planetary roller screw transmission for high-precision mechanisms
Authors: Boyko S O , Golovenkin E N , Silivanov R P , Lekanov A V , Melkomukov A A 
Published: January 2020

Abstract
In the article experimental survey results of planetary roller screw drive for usage in high precision parallel structure mechanisms for space application are considered. The drive was developed in Academician M.F. Reshetnev Information Satellite System. Roller screw is perspective type of precision linear drives which excels in several characteristics extensively used in modern time ball screws. Ground tests conducting methodology, tests scheme of the developed roller screw are described. Key parameters of analyzed precision linear drive such as: transmission accuracy, repeatability, axial stiffness and operating lifetime are presented.
The development and reliability analysis environment of fault-tolerance multiversion software
Authors: Kovalev I V , Kovalev D I , Chefonov V S , Testoedvov N A , Koltyshev A A , Krivogornitsyn A G 
Published: January 2020

Abstract
The article considers the software toolkit «SA-Analysis» which is intended for designing and the analysis of fault tolerant software reliability. Fault tolerance is reached due to application multiversion software architecture. The description of software system toolkit is given. Application of similar system allows to raise efficiency of software engineering process and to create highly reliable software products.
Mathematical analysis of spacecraft control cyclograms
Authors: Testoedov N A , Kosenko V E , Golovenkin E N , Kuzovnikov A V , Kovalev I V 
Published: January 2020

Abstract
In this paper, the mathematical analysis of spacecraft control cyclograms is considered. The proposed solution is applied to a ground-based control complex of spacecrafts, where a plenty of cyclograms is a part of the general technological control cycles of spacecrafts, which include the whole of spacecrafts system life cycle. The problem of ground control system software optimization is solved using static strategies and cost criteria. Spacecraft control processes cover all the system control cycle and regulate an execution of the information processing and control tasks in the ground-based and board control complexes. Analyzing characteristics of such the processes has ascertained a strong relation between spacecraft technological control cycles and their computer-based realization for the mentioned complexes.
Implementation of multiversion software based on an object-oriented approach
Authors: Kovalev I V , Kovalev D I , Chefonov N S , Testoedvov N A , Golovenkin E N 
Published: January 2020

Abstract
The article discusses the concept of redundant programming and its implementation based on an object-oriented approach. Three components of multiversion programming, which are basic in the synthesis of fault-tolerant software, are identified. In comparison with the standard software life cycle, the basic procedures of the multiversion programming methodology are considered. The concept of abstract state of the multiversion software components version is based on the object-oriented approach.
Flexural fluctuations of the rotors of knife refiners
Authors: Vikharev S , Sannikov A , Zinatov M 
Published: January 2020

Abstract
The subject of the study is the flexural fluctuations of the rotors of knife refiners. The dynamic and mathematical models of rotors of disk mills are developed. As a result of research, a method for vibration calculation of rotors is proposed and tested. Research was also conducted using the Ansys software package. The error in determining the lower frequencies of free fluctuations of the mill rotors does not exceed 9%. Failure to take into account the elastic compliance of the rotor bearings leads to an error in determining the frequencies of free flexural fluctuations by no more than 15%, and the gyroscopic moment increases the above frequencies by no more than 25%. The cantilever arrangement of the disk reduces the frequencies of free fluctuations of the mill rotor by 1.1 - 1.4 times in comparison with the inter-support arrangement. The developed calculation procedure can be used in other industries, for example, mining and metallurgy.
Potential for development of innovative processes in the high-tech sector of the region’s economy
Authors: Vasilyeva Z A , Lihacheva T P , Moskvina A V , Borodkina V V 
Published: January 2020

Abstract
The development prospects of innovative processes in the economy of the region, characterized by technological diversity and diversified specialization, are considered. The development areas were prioritized on the basis of the need to develop high-tech and knowledge-intensive sectors of the economy, which are the locomotives of growth for basic and infrastructural ones. Assessment of strategic opportunities was based on an analysis of the development trends of world commodity markets, taking into account the potential of the region and the competitive positions of industries. The development of world markets was considered in the aspect of “global challenges” and national trends in two types of challenges, which determined the possibilities for their development and impact on national and local markets. At the same time, the emergence of new conditions for the development of commodity markets, which must be taken into account in the evaluation processes. The phasing of the study is determined. The prospects for the development of a high-tech sector of the economy in the field of high production redistribution in the context of traditional and new markets are presented. A positioning map has been compiled and the transition from local (niche) competitiveness to international. Potential elements of the region’s scientific and technical system in the form of R&D, production and consumption centers that accompany the process of technological development along the entire life cycle are identified.
Products of the Industry 4.0 competence centers
Authors: Zakoldaev D A , Gurjanov A V , Shukalov A V , Zharinov I O 
Published: January 2020

Abstract
Branch competence centers are organization and jurisdiction forms of company activity to unite digital, smart and virtual factories of the Industry 4.0 according to its specialty. Branch competence centers are for huge infrastructure projects solution where the result is not only the item itself (high-tech product) but also professional cadres, new types of technologies, new forms of the production data representation and other. There is the Industry 4.0 products classification and also specializations of the branch competence centers which are meant to be implemented into the industry by the first hand. Actual for the Industry 4.0 competence centers in digital projection are digital production competence centers, item exploitation accompanying competence centers and standardizing and certification competence centers of products and technologies. There are schemes of the digital companies interaction and the most probable branch competence centers in the item designing industry results are defined.
Justification of well drilling modes using collapsible drilling tools with multi-row cutting structure
Authors: Bovin K A , Shigin A O , Plotnikov I S , Nafikov R Z , Miranov A I 
Published: January 2020

Abstract
Rational drilling modes for blast holes in open pit mining depend on the physical and mechanical properties of the rocks. Serially manufactured drilling tools often work in areas that do not meet the conditions of their application (especially in coal mines). The paper presents the design of a cutting bit of a cutting-rotational type with hard-alloy multi-row cutting structure, as well as the dependence of the power regimes of drilling with this bit on the of drill rocks strength.
Vibroacoustic processes of grinding fibrous semi-finished products in the knife refiners
Authors: Vikharev S 
Published: January 2020

Abstract
Vibroacoustic processes during refining in knife refiners are investigated. When the rotor blades move relative to the stator knives, pressure pulses occur that act on the fibrous semi-finished product, causing it to refine, and on the rotor and stator, causing them to vibrate. A technique has been developed for calculating the sliding speed of the rotor knives on the stator knives. The sliding speed of the knives depends on the headset pattern and the rotor speed and can reach the speed of sound in the metal. The necessity of taking into account the Doppler effect during vibration diagnostics and controlling the functioning of mills is shown. The error in calculating headset frequencies without taking into account the above effect can reach more than 40%, taking into account up to 8%.
Engineering design of second distillation column of IPA
Authors: Bamatov Ibragim M , Bamatov Dzhabrail M 
Published: January 2020

Abstract
This research work is about design of second distillation column in a continuous flow process for isopropylalcohol (88% purity) producing (Cumene process) for industry. The differences between tray and packed column were observed and the preferences were given to the one with most advantageous abilities. Some technical (engineering) calculations were solved within this project to choose accurate properties for the distillation column.
Industry 4.0 vs Industry 3.0: the role of personnel in production
Authors: Zakoldaev D A , Korobeynikov A G , Shukalov A V , Zharinov I O , Zharinov O O 
Published: January 2020

Abstract
The actual task is to prepare the specialists to work in the Industry 4.0 digital companies. There is an analysis of primary informative technologies and production equipment types to be used in the item designing companies of the Industry 3.0 and the Industry 4.0 smart factories. It is clear that knowledge and skills of production workers today are in sufficient to complete analogue working functions in digital companies equipped with cyber and physical systems. Cyber and physical productions are created to deeply automatize the Industry 4.0 smart factories technological processes of the item manufacturing. Cyber and physical productions are applied in digital companies where functioning principles are based with the implementation of humanless and paperless technologies into production activity. There is a scheme of operator and numeric control machine interaction, which are applied in the Industry 3.0 companies. There is a scheme of cyber and physical system and operator interaction in the Industry 4.0 digital production. It is clear that the Industry 4.0 specialists preparation must be initiated today in parallel with advanced informative technologies development and production cyber and physical systems.
A technique for monitoring content of undissolved gas in a hydraulic drive of a self-propelled vehicle
Authors: Lunev A S , Afanasov V I , Nikitin A A , Sokolov D A , Ionova V A , Obvintseva V Y 
Published: January 2020

Abstract
This paper considers a technique for monitoring the content of the undissolved gas in hydraulic systems. This technique is suitable for a self-propelled vehicle, forestry, lifting, and transport equipment. The paper presents an influence of gas content in the hydraulic fluid on the physical properties of hydraulic oils. The work is important because the hydraulic fluid is a mixture of liquid and undissolved gas. The measure test bench presenting in this paper makes it possible to understand the mechanism of monitoring the content of the undissolved gas in the hydraulic fluid.
Climatic effect on characteristics of a hydraulic drive of a self-propelled vehicle
Authors: Kaverzina A S , Lunev A S , Afanasov V I , Pilyugaev A I , Andreychikov I V , Zakovryazhin M V 
Published: January 2020

Abstract
This paper considers the dependences of performance parameters of the hydraulic drive of self-propelled vehicles used in road-building, logging, oil-producing, and other fields. Performance parameters of the hydraulic drive depend on numerous factors. The most important of them is the ambient temperature. The hydraulic drive has a wide temperature range from -60 °C to +100 °C.
Varieties and kinetics of fatigue cracking of fixed offshore platforms for oil and gas production
Authors: Starokon I V 
Published: January 2020

Abstract
The article investigates the different types of cracks and kinetics of propagation of cracks in main structural components and welds of the support blocks of fixed offshore platforms. Describes the process of metal fatigue for offshore installations. The article provides methods for calculating of the stress intensity factor and describes the methods of calculation for some cases. Based on the analysis of scientific studies, the author provides methods allowing to calculate two parameters describing the kinetics of crack propagation in relation to the elements and welded joints of offshore fixed platforms, namely the methods of calculation of threshold and critical stress intensity factor. On the basis of the conducted research the author constructed the kinetic chart of the development of fatigue cracks in relation to the elements and welded joints of the supporting blocks of fixed offshore platforms. In addition, the author gives the equation in which it is possible to determine the growth rate of fatigue cracks in various areas of the kinetic diagram.
Calculation of the efficiency of the planetary gear K-V-V without a carrier
Authors: Volkov G Yu , Fadyushin D V , Mirchuk M A 
Published: January 2020

Abstract
The work is dedicated to the calculation and improvement of the efficiency of the novel planetary gears without a carrier. The feature of the K-V-V gears is the misalignment of the axles of the driving wheel, the driven wheel and the supporting wheel. Three types of the gearing are considered: 1) involute; 2) involute with the track rollers; 3) articulated. Calculated values of efficiency at characteristic gear ratios are higher than, for example, worm gears, especially for variants with support rollers and gear-hinge gears. The articulated gear (variant 3) is much simpler than the involute gear with the track rollers (variant 2).
Consulting in international specialization and cooperation of high-tech industries
Authors: Piskorskaya Svetlana Yu , Malanina Yulia N 
Published: January 2020

Abstract
The article deals with the issues of international division of labor, international specialization and international cooperation in the field of high-tech industries. The main forms of international cooperation on the example of the market of aerospace equipment production are presented. The role of consulting in international cooperation is revealed, such areas as administration, personnel management, evaluation, financial, legal, tax, marketing consulting are considered.
The impact of the shunting processes in a plasma arc on the melting performance of the filler wire
Authors: Ivanov S I , Petrenko A A , Dmitrieva I A , Sakharova O N 
Published: January 2020

Abstract
The methodology for experimental measurement of the shunting current has been developed in the article. Upon reaching a certain depth of immersion of the filler wire into plasma due to an increase in the potential difference between the end face of the wire and the surrounding plasma, the shunting current is significantly increasing reaching several dozen amperes. By changing the immersion depth of the wire by changing the value of the shunting current, it is possible to control the heat input into the base and filler metal, as well as to manage the transfer of the filler metal.