scholarly journals Comparative analysis of variants of magnetic pole collection based on the halbach massif

2017 ◽  
Vol 3 (1) ◽  
pp. 47-57
Author(s):  
S A Kaznacheev ◽  
T S Zimenkova ◽  
A S Krasnov
Keyword(s):  
Comparative Analysis ◽  
High Speed ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Experimental Studies ◽  
Volume Growth ◽  
Practical Significance ◽  
Transport Systems ◽  
Cost Of Energy ◽  
Magnetic Poles

Today, one of the most urgent tasks of modern transport systems in terms of volume growth and quality improvement, freight and passenger transportation worldwide, is to increase the speed of transportation and reduce the cost of energy resources associated with these transportations. These tasks can be solved by introducing high-speed, in particular magnetic-lev- el transport systems. In this paper, we describe and compare the variants of assemblies of magnetic poles based on the Halbach massif. The relevance of the studies carried out is confirmed by the world experience in the use of permanent magnets in the field of magneto-levitation technologies in various branches of science and technology. The purpose of the research and comparative analysis of variants of assemblies of magnetic poles based on the Halbach massif is to obtain data on the possibility of using such assembly variants in levitation systems of magnetic-leav- ing transport [7], as well as visual proof that mathematical modeling does not allow to fully describe emerging phenomena In this article, we use empirical methods of investigation. The results obtained will find their application in the design of the design, which will reduce both the mass-dimensions and the energy consumption of the levitation system. The practical significance of the studies obtained lies in the possibility of applying the principles considered practically in any magnetic-levitation transport systems. Conclusion: Based on the experimental studies, data were obtained on the levitation forces and the braking forces, which make it possible to draw conclusions about the advisability of using these assembly variants.

scholarly journals Cooling the high-temperature superconductor materials magnitolevitatsionnyh systems

2016 ◽  
Vol 2 (4) ◽  
pp. 87-96
Author(s):  
Yury F Antonov ◽  
Anton S Krasnov ◽  
Tatiana S Zimenkova
Keyword(s):  
High Temperature ◽  
High Speed ◽  
Volume Growth ◽  
Superconducting Devices ◽  
Superconducting Materials ◽  
Practical Significance ◽  
Transport Systems ◽  
Cooling Systems ◽  
High Temperature Superconducting ◽  
Application Systems

One of the most pressing problems of modern transport systems in terms of volume growth and improve the quality of freight and passenger traffic in the world of today are increasing the traffic speed and decrease energy costs associated with these services. These problems can be solved through the introduction of high-speed, in particular maglev transport systems. This article provides a description and possible applications of cooling superconducting materials in the development of promising structures maglev transport systems. The relevance of the research world experience in the use of high-temperature superconducting materials using maglev technologies in various fields of science and technology. The purpose of this article is to summarize the currently existing cooling systems of tendencies of development of low-temperature and high-temperature superconducting devices. Identify the key strategic directions of development of technologies in this field, as well as the generalization of performance characteristics of systems with low and high temperature superconducting devices. Results: In this article of the used analytical methods. The results obtained in the course of the research, will create the basis for further research in the field of manufacture of superconducting materials and in the development of high-performance cooling systems. The practical significance of the results is the significant simplification of further research in the field of superconducting technology and focus on the most important unsolved problems in this area. Conclusions: The article deals with current issues of application systems cryostatting LTS and HTS systems using high-temperature superconductors. The existing to date design of cooling systems, as well as highlights of the promising directions of development of this area.

scholarly journals Electrotechnical complex of maglev rolling stock

2021 ◽  
Vol 7 (3) ◽  
pp. 67-105
Author(s):  
Alexander V. Kireev ◽  
Nikolay М. Kozhemyaka ◽  
Gennady N. Kononov
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Low Cost ◽  
Practical Significance ◽  
Transport Systems ◽  
Rolling Stock ◽  
Computational Studies ◽  
Main Research ◽  
Inductor Motor ◽  
Technical Complex

Background: The development of work in the field of creating cargo maglev transport systems is associated with the development and study of the electro technical complex of the rolling stock for the operating range with long stretches in poorly developed territories. Aim: The aim of the work is to substantiate the structure and parameters of the components of the electro technical complex of the rolling stock, to study the operating modes. Methods: The main research methods are functional structural analysis and synthesis, computer modeling, computational studies, analysis of research results. Results: As a result of the research, the factors that determine the appearance of the electrotechnical complex of the rolling stock have been identified. The basic requirements for the electrical complex are formulated. The structure was developed and the parameters of the components of the electrical complex for the transport platform with magnetic levitation were determined. A high-speed flat car model 13-6990 for the transportation of containers was chosen as the closest railway analogue. A computer model of a combined traction-levitation system based on a linear reluctance inductor motor has been developed. The results of computational studies, confirming the physical feasibility of the electrical complex of the rolling stock with linear reluctance inductor motors, are presented. Conclusion: The practical significance lies in the fact that the proposed concept of constructing an electro technical complex of rolling stock provides for the creation of a maglev transport system with a low-cost infrastructure.

scholarly journals The Concept of Development and Implementation of High-Speed Transport

2020 ◽  
Vol 18 (1) ◽  
pp. 58-72
Author(s):  
V. M. Alexeev ◽  
A. V. Vaganov ◽  
M. V. Katina
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Transport Systems ◽  
Rolling Stock ◽  
Design Elements ◽  
Safety Issues ◽  
Current Collection ◽  
High Speeds ◽  
Technical Solutions ◽  
Original Approach

The article discusses the issues of implementation and organization of high-speed transport. The objective of the article is to consider possible options for implementing highspeed (HS) motion systems using the principle of magnetic levitation, which will ensure high speeds for delivery of goods and carrying people over long distances. To achieve this objective, it is necessary to develop an engine and technical solutions for design of HS rolling stock, make decisions on energy supply infrastructure and the HS track, address safety issues and new control systems considering the state of the infrastructure and its design elements. The article discusses several options for implementation of high-speed transport systems, differing in the power supply system, current collection and track based on the magnetic levitation approach. An original approach is proposed in implementation of magnetic levitation transport using the technology of electromagnetic guns designed to implement traction forces of a magnetic levitation vehicle. The advantage of this approach is that it opens the possibility of maneuvering for the vehicle while driving. This allows to abandon switch turnouts, now significantly limiting the use of magnetic levitation transport. A mathematical model describing interaction of an electromagnetic gun and supermagnets located on the track is considered. In constructing the model, methods of the theory of electromagnetic field and interaction of magnetic bodies were used, and when constructing a model of interaction of rolling stock with a magnetic track, methods of mathematical algebra and the Cauchy theorem were used. The article discusses various principles of organization of movement using the magnetic levitation for urban, suburban, and intercity transport.

Performance Evaluation of Magnetohydrodynamic Bearing

2005 ◽  
Author(s):  
H. Hirani ◽  
P. Samanta
Keyword(s):  
High Speed ◽  
Permanent Magnets ◽  
Magnetic Levitation ◽  
Hydrodynamic Lubrication ◽  
Low Cost ◽  
Low Friction ◽  
Oil Flow ◽  
Hybrid Bearing ◽  
Commercial Applications ◽  
Structural Simplicity

The present paper introduces a concept of hydrodynamic-permanent-magnetic hybrid bearing. The hybrid bearing uses repulsive force between permanent magnets and fluid force developed due to relative speed in a single assembly arrangement. Repulsive type passive magnetic levitation has advantage of minimum starting torque. Hydrodynamic lubrication mechanism has advantage of low friction at medium and high speed. This hybridization will be an attractive choice in commercial applications for its low cost, structural-simplicity and no metal-to-metal contact. An experimental setup is designed and developed to investigate the performance characteristics of proposed concept of hybrid bearing. Minimum film thickness, oil flow rate, and temperature rise are recorded at various speed- and load- conditions. Results are plotted to demonstrate the behavior of hybrid bearing arrangement.

scholarly journals Russia’s integrated transit transport system (itts) of on the basis of vacuum magnetic levitation transport (vmlt)

2018 ◽  
Vol 4 (3 suppl. 1) ◽  
pp. 57-84 ◽  
Author(s):  
Yuriy A. Terentyev ◽  
Valery V. Filimonov ◽  
Georgy G. Malinetskiy ◽  
Vladimir S. Smolin ◽  
Victor V. Koledov ◽  
...  
Keyword(s):  
Transport System ◽  
High Speed ◽  
Magnetic Levitation ◽  
Raw Materials ◽  
Transport Systems ◽  
Test Model ◽  
Trade Routes ◽  
Maximal Speed ◽  
Technical Solutions ◽  
Transport Potential

The Russian Federation is located at the crossroads of the trade routes of the Eurasian continent, where a significant volume of the transport flow of the world’s trade is formed. The transport potential of the territory of Russia, when implemented as an Integral Transit Transport System (ITTS), is comparable to the benefits from the traditional export of hydrocarbons and other raw materials. Analyzing the efficiency of transport systems, the key is the energy approach. The concept of ITTS is considered, based on all known and being developed transport lines, including high-speed vacuum magnetic levitation transport (VMLT). The fundamental problems are discussed being on the way to achieving the maximal speed, energy efficiency and throughput of VMLT. The preliminary findings are presented obtained from experiments on the test model of the VMLT route. It is concluded that there is a need for a deeper study of the properties of magnetic and superconducting materials in extreme high fields, power and speed regimes to search for fundamentally new technical solutions for the creation of VMLT

scholarly journals Fire risk of hull structures made of polymeric composites and ways to mitigate it

2021 ◽  
Vol 2 (396) ◽  
pp. 73-84
Author(s):  
S. Borodai ◽  
◽  
S. Kozlov ◽  
A. Letin ◽  
L. Rozum ◽  
...  
Keyword(s):  
Fire Protection ◽  
High Speed ◽  
Fire Hazard ◽  
Experimental Studies ◽  
Thermal Characteristics ◽  
Fire Risk ◽  
Practical Significance ◽  
Transfer Processes ◽  
Mass Transfer Processes ◽  
Under Construction

Object and purpose of research. The object of the study is polymer composite materials (PCM) used for manufac-turing hull structures of ships and vessels. The main purpose is to find the ways of fire protection of ships and vessels built from these materials. Materials and methods. The results of experimental studies and standard tests on the fire resistance of PCM structures, as well as methods of heat and mass transfer processes simulation in ship premises during fires, were used to determine the thermal characteristics affecting these structures. Main results. The ways of improving the fire safety of ships and vessels with PCM hull structures are determined. The list of problems to be solved in this area is outlined. Also this study has recommendations to improve the fire protection of the ships being designed, under construction and in operation. Conclusion. The structural PCM used in indigenous practice does not meet the current requirements of the International Maritime Organization (IMO) for Maritime Safety for fire protection of high-speed vessels and the requirements for fire protection of Navy ships. Ships that are in service and built using these materials do not provide additional measures to reduce their fire hazard. Fires on such ships can lead to disastrous consequences. It is necessary to solve this problem as soon as possible. The recommendations proposed in this paper on how to solve it, based on a large amount of experimental research, and they have great practical significance.

scholarly journals Training of specialists and development of design regulatory framework for Russian magnetic levitation transport systems

2018 ◽  
Vol 4 (1) ◽  
pp. 138-154 ◽  
Author(s):  
Vladimir V. Shmatchenko ◽  
Pavel A. Plekhanov ◽  
Dmitry N. Roenkov ◽  
Victor G. Ivanov
Keyword(s):  
Permanent Magnets ◽  
Quality Management System ◽  
Magnetic Levitation ◽  
Linear Motor ◽  
Regulatory Framework ◽  
Transport Systems ◽  
Optimal Technology ◽  
The Cost ◽  
Wheel Track ◽  
Training Specialists

The article deals with the issues of training of specialists and development of design regulatory framework for Russia’s magnetic levitation transport systems. Introduction: The development of maglev technologies in Russia requires solving the task of training specialists and developing the design regulatory framework for the magnetic levitation transport systems (MLTS). The MLTS related specific issues, namely traction, levitation, lateral stabilisation, power supply systems as well as overall safety, should receive special attention. Analysis: The maglev transport technology is a further development of a conventional “wheel-track” technology, employing the linear motor and the magnetic levitation system (electromagnetic, electrodynamic, the permanent magnets-based system, and combined types). Each type of MLTS possesses its advantages and limitations, which points at the necessity to justify the choice of an optimal technology. A crucial issue is to choose (develop) a linear motor for MLTS on the basis of the four related aspects: electromagnetic, thermal, mechanical, and the cost related one. Another significant issue is the overall safety provision of MLTS. The elaboration of the quality management system should be carried out in accordance with all stages of the life cycle of the wheel-track transport, which is specified in EN 50126, EN 50128, and EN 50129. Methodology: The methodological base of training specialists and developing the design regulatory framework should become a systematic approach. The necessity of the application of this approach lies in the variety and complexity of physical processes of MLTS. The development of the project and working documentation of the design and construction of MLTS in the territory of Russia should be carried out in accordance with the active Russian legislation, which specifies the application of Special Technical Regulations for new technical systems. Conclusion: As of today, it is reasonable to develop the training of specialists for MLTS on the basis of the qualification upgrade and professional retraining programmes of the engineering staff, who already possess the fundamental railway education. All the necessary expertise and competences are available at Emperor Alexander I St. Petersburg State Transport University. For many years, the university’s specialists have been working on the development of the maglev technologies in Russia both on the basis of their own researches and on the study and generalisation of the national and international experience. They have also been developing the projects of the design regulatory framework for future MLTS.

scholarly journals Vacuum magnetic levitation transport: definition of optimal characteristics

2016 ◽  
Vol 2 (3) ◽  
pp. 18-35 ◽  
Author(s):  
V M Fomin ◽  
V I Zvegintsev ◽  
D J Nalivaichenko ◽  
Y A Terent’ev
Keyword(s):  
High Speed ◽  
Magnetic Levitation ◽  
Aerodynamic Drag ◽  
Low Cost ◽  
Balance Of Power ◽  
Cost Of Energy ◽  
Wide Circle ◽  
Definition Of ◽  
Working Parameters ◽  
The Cost

Known to a wide circle of specialists of the transport, the concept of "Evacuated Тube Тransport Technology" (ET3) [1] is an energy efficient complex magnetic levitation, vacuum and superconducting technology for high-speed ground transportation. The concept is presented as the most effective solution to problem increase the speed and capacity of the transport system c is acceptable the cost of moving passengers and cargo, and low cost of energy. To determine the optimal ranges of working parameters of the considered transportation system the analysis of the characteristics of the rarefied environment. Based on considerations of balance of power the cost of maintaining the vacuum in the system and to overcome aerodynamic drag throughout the speed range of the vehicle (TC) (500÷6500 km/h) it is shown that the lower bound of the optimal depth of vacuum to the vacuum environment, for the vehicle to relatively low speeds, is 25÷80 PA. For vehicles with speeds close to the maximum I would like to have the pressure of 1 PA or less.

scholarly journals RESEARCH OF ADHESIVE AND HEAT-PROTECTIVE PROPERTIES OF RUBBERS BASED ON EPDM WITH ARAMID FILLER

2020 ◽  
pp. 53-61
Author(s):  
Galina Shaydurova ◽  
◽  
Dmitriy Oros ◽  
Natalya Povarnitsyna ◽  
◽  
...  
Keyword(s):  
Adhesive Strength ◽  
Thermophysical Properties ◽  
High Speed ◽  
Phenol Formaldehyde ◽  
Experimental Studies ◽  
Practical Significance ◽  
Laboratory Research ◽  
Formaldehyde Resin ◽  
Ethylene Propylene ◽  
Vulcanized Rubber

Reinforced materials of the "fabric filler-vulcanized rubber" type may be successfully operated under the condition of the specified adhesive strength at the interface of the "substrate-polymer (rubber) "contact. The article presents theoretical infor-mation about ethylene propylene (EDM) and ethylene-propylene-diene (EPDM) synthetic rubbers, known internationally under the brand name EPDM-monomer, arimide fiber and laboratory research methods. The advantages of using EDM and EPDM in the manufacture of heat-protection coatings are; high heat resistance, low density, good compatibility with fillers (mineral and synthetic), compatibility with epoxy and phenol-formaldehyde resins, belong to coking materials. The article also provides the results of experiments and analysis of the data obtained, namely, the adhesive strength and thermal effect of rubbers based on EPDM with an arimide filler of a non-woven structure. The object of the research was modified heat-protective materials based on EPDM, and the subject of the research was selected rubber compounds based on EPDM and synthetic arimide fiber. To as-sess the physicochemical and thermophysical properties, a derivatographic analysis was performed, which includes TGA and DTA, two vulcanized rubber-woven samples from rubbers of grades 51-1615, 51-2110 together with arimide fiber. For the first time, results were obtained using ethylene-propylene-diene rubbers, including modification with a phenol-formaldehyde resin, which gives a higher erosion resistance when exposed to high-speed heat flow. Analysis of the results of experimental studies has shown that the use of arimide fiber can provide higher strength and thermophysical properties of heat-protective materials. In general, the results obtained may be of practical significance for the development of new-generation products.

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