Pub Date : 2021-12-15DOI: 10.22363/2312-8143-2021-22-3-305-316
E. S. Ivanova, J. Ivanova
The article discusses the mineralogical and petrographic features of the metamorphic formations of the poorly studied and promising the Pervaya Rudnaya Gorka Fe-scarn ore occurrence (Kongor ore region), localized in the Voikar, and the typification of host rocks by mineral composition. In order to clarify the ore-forming affiliation of the Pervaya Rudnaya Gorka ore occurrence, the comparative analysis was carried out with the reference to well-studied Novogodnee-Monto Au-Fe-skarn deposit (Toupugol-Khanmeishor ore region), which showed similar mineral composition, structural and texture features and geological structure of ore objects. According to the results of studies, a close composition of the enclosing volcanic-sedimentary rocks, in particular the skarn formations, containing the gold-sulfide-magnetite mineralization at the Novogodnee-Monto ore deposit; connection with the same intrusive complexes (Sob, Kongor, and Musyur) and faults of the north-western direction. Using the microscopic method of research, the changes in the propylite formation area at the Pervaya Rudnaya Gorka ore occurrence, indicating a large-scale regional pre-ore metasomatism, were first identified and described in detail. The following metasomatic zonation (from the inner to the outer zone): actinolite + epidote chlorite + actinolite + epidote chlorite + epidote was been established at the ore field. Based on the obtained research results, it is concluded that the poorly studied territories of the Polar Urals are promising.
本文讨论了Voikar地区研究较少但前景看好的perperaya Rudnaya Gorka铁矿床(Kongor矿区)的变质岩的矿物学和岩石学特征，以及寄主岩的矿物组成类型。为明确peraya Rudnaya Gorka矿床的成矿归属关系，与研究较好的Novogodnee-Monto au - fe -矽卡岩矿床(toupugoll - khanmeishor矿区)进行了对比分析，发现两者具有相似的矿物组成、构造结构特征和矿物地质构造。根据研究结果，在Novogodnee-Monto矿床，封闭的火山-沉积岩，特别是矽卡岩组，含有金-硫化物-磁铁矿成矿作用;与相同的侵入杂岩(Sob、Kongor和Musyur)和西北方向的断裂相连。利用显微研究方法，首次识别并详细描述了perperaya Rudnaya Gorka矿带丙岩地层区域的变化，表明该区存在大规模的区域前交代作用。矿场交代带由内到外依次为:放线石+绿泥石+放线石+绿泥石+绿泥石+绿泥石。根据已获得的研究结果，认为研究较少的极地乌拉尔地区是有希望的。
{"title":"Mineralogical and petrographic characteristics of the host rocks of the Pervaya Rudnaya Gorka Fe-skarn ore occurrence","authors":"E. S. Ivanova, J. Ivanova","doi":"10.22363/2312-8143-2021-22-3-305-316","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-3-305-316","url":null,"abstract":"The article discusses the mineralogical and petrographic features of the metamorphic formations of the poorly studied and promising the Pervaya Rudnaya Gorka Fe-scarn ore occurrence (Kongor ore region), localized in the Voikar, and the typification of host rocks by mineral composition. In order to clarify the ore-forming affiliation of the Pervaya Rudnaya Gorka ore occurrence, the comparative analysis was carried out with the reference to well-studied Novogodnee-Monto Au-Fe-skarn deposit (Toupugol-Khanmeishor ore region), which showed similar mineral composition, structural and texture features and geological structure of ore objects. According to the results of studies, a close composition of the enclosing volcanic-sedimentary rocks, in particular the skarn formations, containing the gold-sulfide-magnetite mineralization at the Novogodnee-Monto ore deposit; connection with the same intrusive complexes (Sob, Kongor, and Musyur) and faults of the north-western direction. Using the microscopic method of research, the changes in the propylite formation area at the Pervaya Rudnaya Gorka ore occurrence, indicating a large-scale regional pre-ore metasomatism, were first identified and described in detail. The following metasomatic zonation (from the inner to the outer zone): actinolite + epidote chlorite + actinolite + epidote chlorite + epidote was been established at the ore field. Based on the obtained research results, it is concluded that the poorly studied territories of the Polar Urals are promising.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43041989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-12-15DOI: 10.22363/2312-8143-2021-22-3-283-292
S. Krivoshapko, V. N. Ivanov
The choice of optimal shape of ship hull surface is one of the main problems of ship architects and designs. A choice of the form is based on empirical formulae or on intuition of designers. In the article a method of determination of explicit algebraic equations of theoretical shape of ship hull with three main cross-sections given in advance and coinciding with the design waterline, the midship section, and with the main buttock line is given. The forms of the lines in the main cross-sections are chosen from conditions taken in advance. These surfaces are called hydrodynamic. A method is illustrated for three threes of main cross-sections of the ship hulls, i.e. nine hydrodynamic surfaces were constructed. All algebraic equations were converted to parametrical form for comfort of computer modelling. With their help, all nine ship surfaces proposed for the introduction were visualized. Having changed constants containing in the surface equations, i.e. correcting the forms of three main geometric parameters of ship hull, one can select the most rational shape of hull surface for the first approach. Further, it is possible to begin planning parallel middle bodies or to combine bow and stern extremities of a ship from different fragments of algebraic surfaces but with the same midship sections. In a paper, only geometrical problems of design of theoretical hull shape are described.
{"title":"Analytical surfaces for ship hulls","authors":"S. Krivoshapko, V. N. Ivanov","doi":"10.22363/2312-8143-2021-22-3-283-292","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-3-283-292","url":null,"abstract":"The choice of optimal shape of ship hull surface is one of the main problems of ship architects and designs. A choice of the form is based on empirical formulae or on intuition of designers. In the article a method of determination of explicit algebraic equations of theoretical shape of ship hull with three main cross-sections given in advance and coinciding with the design waterline, the midship section, and with the main buttock line is given. The forms of the lines in the main cross-sections are chosen from conditions taken in advance. These surfaces are called hydrodynamic. A method is illustrated for three threes of main cross-sections of the ship hulls, i.e. nine hydrodynamic surfaces were constructed. All algebraic equations were converted to parametrical form for comfort of computer modelling. With their help, all nine ship surfaces proposed for the introduction were visualized. Having changed constants containing in the surface equations, i.e. correcting the forms of three main geometric parameters of ship hull, one can select the most rational shape of hull surface for the first approach. Further, it is possible to begin planning parallel middle bodies or to combine bow and stern extremities of a ship from different fragments of algebraic surfaces but with the same midship sections. In a paper, only geometrical problems of design of theoretical hull shape are described.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49160698","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The spatial stabilization system synthesis problem of the robot is considered. The historical overview of methods and approaches for solving the problem of control synthesis is given. It is shown that the control synthesis problem is the most important task in the field of control, for which there are no universal numerical methods for solving it. As one of the ways to solve this problem, it is proposed to use the method of machine learning based on the application of modern symbolic regression methods. This allows you to build universal algorithms for solving control synthesis problems. Several most promising symbolic regression methods are considered for application in control tasks. The formal statement of the control synthesis problem for its numerical solution is given. Examples of solving problems of synthesis of system of spatial stabilization of mobile robot by method of network operator and variation Cartesian genetic programming are given. The problem required finding one nonlinear feedback function to move the robot from thirty initial conditions to one terminal point. Mathematical records of the obtained control functions are given. Results of simulation of control systems obtained by symbolic regression methods are given.
{"title":"Synthesis of a mobile robot spatial stabilization system based on machine learning control by symbolic regression","authors":"A. Diveev, Дивеев Асхат Ибрагимович, Neder Jair Mendez Florez, Мендес Флорес Недер Хаир","doi":"10.22363/2312-8143-2021-22-2-129-138","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-129-138","url":null,"abstract":"The spatial stabilization system synthesis problem of the robot is considered. The historical overview of methods and approaches for solving the problem of control synthesis is given. It is shown that the control synthesis problem is the most important task in the field of control, for which there are no universal numerical methods for solving it. As one of the ways to solve this problem, it is proposed to use the method of machine learning based on the application of modern symbolic regression methods. This allows you to build universal algorithms for solving control synthesis problems. Several most promising symbolic regression methods are considered for application in control tasks. The formal statement of the control synthesis problem for its numerical solution is given. Examples of solving problems of synthesis of system of spatial stabilization of mobile robot by method of network operator and variation Cartesian genetic programming are given. The problem required finding one nonlinear feedback function to move the robot from thirty initial conditions to one terminal point. Mathematical records of the obtained control functions are given. Results of simulation of control systems obtained by symbolic regression methods are given.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43671578","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-234-240
Yuri M. Panasenko, Панасенко Юрий Михайлович, V. E. Markov, Марков Владимир Евгеньевич, E. V. Karelina, Карелина Елена Викторовна
The purpose of this article is to study the methods of constructing maps of geochemical anomalies using geostatistical methods. The example presented in the article shows the possibility of probabilistic determination of gold in strongly overlapped areas (Urup Island, Kuril Islands). On the site of the Kolenchaty Lidinskoye ore field, the gold ore occurrence of the Kolenchaty is known. It is timed to the incision of the river and disappears outside of it. This is due to the strong overlap of the area by Quaternary sediments. Together with the uneven distribution of gold, these circumstances complicate the construction of maps of geochemical anomalies and the identification of promising areas. To solve this problem, the Statistica program was used. With its help, a matrix of correlations was built, elements of the satellites of gold were selected, and a multiple regression equation for gold was drawn up. This equation was used to probabilistically calculate gold values at each sampling point. In ArcGis, Geostatistical Analyst, geochemical anomalies were mapped from the predicted gold value by kriging, and promising areas were highlighted.
{"title":"Construction a map of geochemical anomalies for the predicted value of gold in the Lidin ore field of Urup Island","authors":"Yuri M. Panasenko, Панасенко Юрий Михайлович, V. E. Markov, Марков Владимир Евгеньевич, E. V. Karelina, Карелина Елена Викторовна","doi":"10.22363/2312-8143-2021-22-2-234-240","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-234-240","url":null,"abstract":"The purpose of this article is to study the methods of constructing maps of geochemical anomalies using geostatistical methods. The example presented in the article shows the possibility of probabilistic determination of gold in strongly overlapped areas (Urup Island, Kuril Islands). On the site of the Kolenchaty Lidinskoye ore field, the gold ore occurrence of the Kolenchaty is known. It is timed to the incision of the river and disappears outside of it. This is due to the strong overlap of the area by Quaternary sediments. Together with the uneven distribution of gold, these circumstances complicate the construction of maps of geochemical anomalies and the identification of promising areas. To solve this problem, the Statistica program was used. With its help, a matrix of correlations was built, elements of the satellites of gold were selected, and a multiple regression equation for gold was drawn up. This equation was used to probabilistically calculate gold values at each sampling point. In ArcGis, Geostatistical Analyst, geochemical anomalies were mapped from the predicted gold value by kriging, and promising areas were highlighted.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46150183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-148-161
A. Starkov, Старков Александр Владимирович, A. A. Emelyanov, Емельянов Андрей Александрович, Lyubov A. Grishantseva, Гришанцева Любовь Александровна, K. I. Zhukovskaya, Жуковская Ксения Ивановна, A. A. Morozov, Морозов Александр Андреевич, Alexey A. Trishin, Тришин Алексей Александрович
In the second part of the series of articles, the issues of the systemic organization of mathematical models for solving the problem of controlling the flows of target information in the Earth remote sensing space system are considered. A description of the interrelated mathematical models of the orbital constellation as components of the information system, the main task of which is to survey ground objects and the formation of the initial volume of information for its further processing, is presented. To calculate the time of servicing the request by the space segment, the following methods of formation are proposed: a model of the evolution of the Earth remote sensing spacecraft orbit; model for forecasting possible spacecraft correction intervals to maintain nominal orbital parameters; model for forecasting possible time intervals for on / off cycles of observation equipment; model for forecasting possible time intervals for dumping the received information to the information reception points. When calculating the cost of servicing a single request from the orbital complex, both the cost of servicing one spacecraft per unit of time and the cost of processing a single request from the ground complex were taken into account. In conclusion, a generalized form of representation of the target information flow model of the Earth remote sensing space system is proposed as an interconnected sequence of functions for changing the amount of information when an appropriate processing process (traffic change functions) is applied to it. General approaches to solving the optimization problem are considered.
{"title":"Methodology for managing the flows of target information in the remote sensing space system Part 2. Interrelated mathematical models systems formation","authors":"A. Starkov, Старков Александр Владимирович, A. A. Emelyanov, Емельянов Андрей Александрович, Lyubov A. Grishantseva, Гришанцева Любовь Александровна, K. I. Zhukovskaya, Жуковская Ксения Ивановна, A. A. Morozov, Морозов Александр Андреевич, Alexey A. Trishin, Тришин Алексей Александрович","doi":"10.22363/2312-8143-2021-22-2-148-161","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-148-161","url":null,"abstract":"In the second part of the series of articles, the issues of the systemic organization of mathematical models for solving the problem of controlling the flows of target information in the Earth remote sensing space system are considered. A description of the interrelated mathematical models of the orbital constellation as components of the information system, the main task of which is to survey ground objects and the formation of the initial volume of information for its further processing, is presented. To calculate the time of servicing the request by the space segment, the following methods of formation are proposed: a model of the evolution of the Earth remote sensing spacecraft orbit; model for forecasting possible spacecraft correction intervals to maintain nominal orbital parameters; model for forecasting possible time intervals for on / off cycles of observation equipment; model for forecasting possible time intervals for dumping the received information to the information reception points. When calculating the cost of servicing a single request from the orbital complex, both the cost of servicing one spacecraft per unit of time and the cost of processing a single request from the ground complex were taken into account. In conclusion, a generalized form of representation of the target information flow model of the Earth remote sensing space system is proposed as an interconnected sequence of functions for changing the amount of information when an appropriate processing process (traffic change functions) is applied to it. General approaches to solving the optimization problem are considered.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47585847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-217-224
K. .. Ivanov, Natalia V. Kamardina, I. Danilov, V. Konoplev
This article describes an example of negligence of drivers transporting passengers and methods of solving it using modern inventions. One of these troubles is driving a car and moving passengers by taxi driver in a tired state. Since not every driver can correctly assess their psycho-physical condition, so to do this, scientists began to create devices for tracking human behavior when he drives vehicle. The purpose of implementing driver fatigue monitoring systems is to ensure road safety and preserve lives and property of citizens. The use of these systems is to facilitate the work of emergency services and taxi company owners, taxi drivers and their passengers. In our article we want to touch on the problem of overwork, specifically taxi drivers, since their work activity is socially significant and non-compliance with the norms of work and rest periods can lead to tragic consequences. Modern taxi drivers often rely on a strong body of car and electronic gadgets in an unexpected situation on the road. Therefore, when driving a car, despite being overworked, they allow themselves to relax beyond the limit and dont react in time if an emergency occurs. We have studied options for implementing driver fatigue monitoring systems and offer to install them on a taxi car.
{"title":"Method of biocontrol of vehicle driver fatigue","authors":"K. .. Ivanov, Natalia V. Kamardina, I. Danilov, V. Konoplev","doi":"10.22363/2312-8143-2021-22-2-217-224","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-217-224","url":null,"abstract":"This article describes an example of negligence of drivers transporting passengers and methods of solving it using modern inventions. One of these troubles is driving a car and moving passengers by taxi driver in a tired state. Since not every driver can correctly assess their psycho-physical condition, so to do this, scientists began to create devices for tracking human behavior when he drives vehicle. The purpose of implementing driver fatigue monitoring systems is to ensure road safety and preserve lives and property of citizens. The use of these systems is to facilitate the work of emergency services and taxi company owners, taxi drivers and their passengers. In our article we want to touch on the problem of overwork, specifically taxi drivers, since their work activity is socially significant and non-compliance with the norms of work and rest periods can lead to tragic consequences. Modern taxi drivers often rely on a strong body of car and electronic gadgets in an unexpected situation on the road. Therefore, when driving a car, despite being overworked, they allow themselves to relax beyond the limit and dont react in time if an emergency occurs. We have studied options for implementing driver fatigue monitoring systems and offer to install them on a taxi car.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42678577","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-162-171
Ivan S. Mikheenko, Михеенко Иван Сергеевич, Anatoly A. Smelik, Смелик Анатолий Анатольевич, Semen A. Yegorov, Егоров Семен Анатольевич, V. V. Chernyak, Черняк Владислав Владимирович
The current trend of replacing metal alloys with composite materials in the manufacture of various types of plain bearings, sealing elements of Assembly units, anti-friction bushings, and other machine parts is very promising for the development of many industries. However, in the manufacture of composite material products by modern methods, such as extrusion, pressing, and injection molding, various types of defects characteristic of these types of processing occur, resulting in the required parameters of the quality of the working surfaces of parts are not provided. This leads to the need for additional mechanical processing the quality of which largely depends on the reliability and durability of the functioning of parts and mechanisms. The article analyzes the main parameters that affect the quality of the surface obtained during turning for metal alloys, as well as for composite materials. The method of obtaining blanks by pressing from the material under consideration was developed, the technological equipment necessary for the research was designed and manufactured, a plan was developed for conducting a full-factor experiment with the creation of a model in the Mathcad program, and an active experiment was carried out to determine the influence of cutting mode parameters on surface roughness. Given the results of the study on the basis of which conclusions about the dependence of various cutting parameters on the quality of the surface layer, defined by the nuances of turning the considered composite material, practical recommendations that will positively affect the timing and success of implementation of fabrication of parts from this material.
{"title":"Analysis of the influence of cutting conditions on the roughness of the surface layer when machining a composite material based on thermally еxpanded graphite","authors":"Ivan S. Mikheenko, Михеенко Иван Сергеевич, Anatoly A. Smelik, Смелик Анатолий Анатольевич, Semen A. Yegorov, Егоров Семен Анатольевич, V. V. Chernyak, Черняк Владислав Владимирович","doi":"10.22363/2312-8143-2021-22-2-162-171","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-162-171","url":null,"abstract":"The current trend of replacing metal alloys with composite materials in the manufacture of various types of plain bearings, sealing elements of Assembly units, anti-friction bushings, and other machine parts is very promising for the development of many industries. However, in the manufacture of composite material products by modern methods, such as extrusion, pressing, and injection molding, various types of defects characteristic of these types of processing occur, resulting in the required parameters of the quality of the working surfaces of parts are not provided. This leads to the need for additional mechanical processing the quality of which largely depends on the reliability and durability of the functioning of parts and mechanisms. The article analyzes the main parameters that affect the quality of the surface obtained during turning for metal alloys, as well as for composite materials. The method of obtaining blanks by pressing from the material under consideration was developed, the technological equipment necessary for the research was designed and manufactured, a plan was developed for conducting a full-factor experiment with the creation of a model in the Mathcad program, and an active experiment was carried out to determine the influence of cutting mode parameters on surface roughness. Given the results of the study on the basis of which conclusions about the dependence of various cutting parameters on the quality of the surface layer, defined by the nuances of turning the considered composite material, practical recommendations that will positively affect the timing and success of implementation of fabrication of parts from this material.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45290183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-139-147
Petr E. Rozin, Yuri A. Smolyaninov
The article is devoted to the actual task of planning the work of a group of different types of spacecraft for remote sensing of the Earth. An enlarged algorithm for solving the planning problem for different types of spacecraft is described. The result of the enlarged algorithm is sought in the form of a set of reference plans for groups of similar spacecraft, thinned out by removing some of the conflicting operations of resetting the sensing data. The characteristics of the developed plans largely depend on the methodology used to account for the impact of cloud cover. The possibility of implementing a methodology based on the use of files of current weather forecasts of hydrometeorological centers downloaded from the Internet in the form of a special application is investigated. The created application is being tested on the real data of the hydrometeorological center downloaded from the American server, which covers a large region, including the European part of Eurasia and part of Africa. An application that simulates the distribution of points within a region estimates the number of points covered by weak cloud cover (20% or less). Based on the results of the simulation, it was found that the proportion of points available for shooting lies in the range from about a quarter to a third. Based on the obtained quantitative estimates, it is concluded that taking into account the influence of cloud cover radically changes the reference plans calculated taking into account only illumination, and affects the structure of the enlarged planning algorithm.
{"title":"Assessment of the impact of current weather forecasts in the task of space survey planning","authors":"Petr E. Rozin, Yuri A. Smolyaninov","doi":"10.22363/2312-8143-2021-22-2-139-147","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-139-147","url":null,"abstract":"The article is devoted to the actual task of planning the work of a group of different types of spacecraft for remote sensing of the Earth. An enlarged algorithm for solving the planning problem for different types of spacecraft is described. The result of the enlarged algorithm is sought in the form of a set of reference plans for groups of similar spacecraft, thinned out by removing some of the conflicting operations of resetting the sensing data. The characteristics of the developed plans largely depend on the methodology used to account for the impact of cloud cover. The possibility of implementing a methodology based on the use of files of current weather forecasts of hydrometeorological centers downloaded from the Internet in the form of a special application is investigated. The created application is being tested on the real data of the hydrometeorological center downloaded from the American server, which covers a large region, including the European part of Eurasia and part of Africa. An application that simulates the distribution of points within a region estimates the number of points covered by weak cloud cover (20% or less). Based on the results of the simulation, it was found that the proportion of points available for shooting lies in the range from about a quarter to a third. Based on the obtained quantitative estimates, it is concluded that taking into account the influence of cloud cover radically changes the reference plans calculated taking into account only illumination, and affects the structure of the enlarged planning algorithm.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47744174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-205-216
A. E. Unitsky, D. Bochkaryov, S. V. Artyushevsky
The runway for the General Planetary Vehicle is a unique in scale and complexity infrastructural construction - an overpass with a length of 40 000 km, covering the planet along the equator and combined with a string-rail transport of the second level. This high-tech structure is a supporting structure for the General Planetary Vehicle and a communication artery that ensures the movement of passengers and goods, as well as the transfer of large amounts of energy and information. The article discusses the location of the overpass in the plan, indicates the most difficult sections and ways to overcome them. The options for the layout of the General Planetary Vehicle overpass are proposed, the main functional areas and structural elements are described. Significant factors affecting the implementation of the project, the problems inevitable in the development of the main elements, as well as solutions to optimize this transport and infrastructure complex have been identified. Solutions were proposed to optimize the overpass routing to overcome mountainous areas of the earths surface, considering the required takeoff and landing characteristics of the General Planetary Vehicle.
{"title":"Development of the structure, survey and design of the equatorial overpass of the General Planetary Vehicle","authors":"A. E. Unitsky, D. Bochkaryov, S. V. Artyushevsky","doi":"10.22363/2312-8143-2021-22-2-205-216","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-205-216","url":null,"abstract":"The runway for the General Planetary Vehicle is a unique in scale and complexity infrastructural construction - an overpass with a length of 40 000 km, covering the planet along the equator and combined with a string-rail transport of the second level. This high-tech structure is a supporting structure for the General Planetary Vehicle and a communication artery that ensures the movement of passengers and goods, as well as the transfer of large amounts of energy and information. The article discusses the location of the overpass in the plan, indicates the most difficult sections and ways to overcome them. The options for the layout of the General Planetary Vehicle overpass are proposed, the main functional areas and structural elements are described. Significant factors affecting the implementation of the project, the problems inevitable in the development of the main elements, as well as solutions to optimize this transport and infrastructure complex have been identified. Solutions were proposed to optimize the overpass routing to overcome mountainous areas of the earths surface, considering the required takeoff and landing characteristics of the General Planetary Vehicle.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45880409","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-02DOI: 10.22363/2312-8143-2021-22-2-184-195
Valeriy V. Kirilovskiy, Кириловский Валерий Владимирович, Y. Belousov, Белоусов Юрий Вениаминович
Rolling bearings are widely used in the products of aviation and space technology. To ensure their long-term trouble-free operation, it is necessary to have accurate and reliable information about the forces acting on the bearings. The required values of forces and, accordingly, the required durability of bearings are usually determined on the basis of the traditional design scheme of a double-support beam (smooth beam mounted on two hinged supports). The paper presents a new interpretation of the features of the operation of bearing units on ball radial single-row bearings installed according to the cross located arrangement. It is shown that under conditions of combined loading, including radial and axial forces, the generally accepted theoretical model of a doublesupport beam is not implemented. There is no single calculation model that adequately reflects the nature of the interaction of bearing parts over the entire range of external loads. In the most general case, this model can be represented by a sequence of five statically indeterminate calculation schemes, which are modified and transformed into one another. So, with an increase in the external radial force, the cantilevered beam with additional hinge support scheme is first implemented, which, then, is transformed into the double-sided jamming scheme, and that, later, is transformed into the two double hinge supports scheme. It is also possible to implement two intermediate transition schemes. A specific example shows that in the products of aviation and space technology, determining the durability of bearings based on the traditional model is not advisable, since it can give an overestimated value with an error of 28,37 to 26663,9 times.
{"title":"Theoretical substantiation of new features of rolling bearings operation under combined loading conditions","authors":"Valeriy V. Kirilovskiy, Кириловский Валерий Владимирович, Y. Belousov, Белоусов Юрий Вениаминович","doi":"10.22363/2312-8143-2021-22-2-184-195","DOIUrl":"https://doi.org/10.22363/2312-8143-2021-22-2-184-195","url":null,"abstract":"Rolling bearings are widely used in the products of aviation and space technology. To ensure their long-term trouble-free operation, it is necessary to have accurate and reliable information about the forces acting on the bearings. The required values of forces and, accordingly, the required durability of bearings are usually determined on the basis of the traditional design scheme of a double-support beam (smooth beam mounted on two hinged supports). The paper presents a new interpretation of the features of the operation of bearing units on ball radial single-row bearings installed according to the cross located arrangement. It is shown that under conditions of combined loading, including radial and axial forces, the generally accepted theoretical model of a doublesupport beam is not implemented. There is no single calculation model that adequately reflects the nature of the interaction of bearing parts over the entire range of external loads. In the most general case, this model can be represented by a sequence of five statically indeterminate calculation schemes, which are modified and transformed into one another. So, with an increase in the external radial force, the cantilevered beam with additional hinge support scheme is first implemented, which, then, is transformed into the double-sided jamming scheme, and that, later, is transformed into the two double hinge supports scheme. It is also possible to implement two intermediate transition schemes. A specific example shows that in the products of aviation and space technology, determining the durability of bearings based on the traditional model is not advisable, since it can give an overestimated value with an error of 28,37 to 26663,9 times.","PeriodicalId":53011,"journal":{"name":"RUDN Journal of Engineering Researches","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-10-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42256729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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