In the article, the experience of low-power uranium ore bodies working off is considered. The practical experience of low-power ore bodies working off with the use of load-haul-dumpers (LHD) of the middle class of PD-2E type or Toro150 at the mines of PJSC PPGHO is accumulated.

The paper considers the methodology of determining the public transport demand using the data from the non-cash fare collection system. The passenger's trip from the origin stop to the destination stop is determined by analyzing the sequence of payment transactions, which were recorded and stored by...

This article describes the correlation function and the angular energy spectrum of scattered waves for terrestrial paths to distribute radio waves of the space propagation path and diffraction. The angular energy spectrum of the scattered waves on such paths is multimodal and causes the periodic nonstationarity...

The article presents the results of the influence of technological factors on the efficiency and time of the gravel screening process on the roller grooved sorting with an auger intensifier. The article obtains the dependences of the efficiency of the gravel separation on the material feed to the sieve,...

Using the methods of the small parameter of nonlinear mechanics, the formulas for determining the parameters of the pendulum auto-balancer were obtained in the article. Conditions for the stability of the auto-balancing process of the unbalanced rotor, fastened in the housing on the elastic supports,...

The article presents the results of studies on the influence of additives increasing stabilizing properties of the arc in the chemistry of tungsten electrodes on the erosion of their tips under SAW. Erosion and crown formation cause weld defects. Severe welding conditions are due to high temperatures...

Issues of managing the commodity turnover of companies in general, and supply, in particular, are currently of concern to many researchers and managers. The article considers the most common approaches to assessing the effectiveness of logistics and supply management by the weighing method. The most...

The article analyzes the results of studies on robotassisted edge machining using specially designed tooling. Application of the specially designed tooling along with a synthesized system setting method ensured preset accuracy and surface quality, improved machining performance and operation stability

The usage of unified devices in the spacecrafts and aircrafts allows reducing the cost of their production, but at the same time leads to the problem of unified device characteristics harmonization with systems of a unit under design. In on-board aircraft thermocontrol systems, which ensure given temperature...

Layered composite materials are an alternative to traditional materials for the manufacture of aviation components, details and structural elements. The delamination is a widespread destruction type of layered composite materials. The paper considered the characteristically destruction of defect growth...

Financing of economic growth and economic development at the subfederal level due to the limited financial resources is considered; the regularity of the formation of a new financial instrument - rational financing – is justified. The concept of rational financing has been formed from the scientific...

The article considers conditions for increasing passive safety of vehicles due to the use of temperature calculation in friction pairs of brake units taking into account their active heat dissipation. This temperature calculation allows designers at the design stage of new brake units to determine their...

The research aims to improve performance of high-accuracy hole-making in hybrid stacks. The stacks consist of carbon fiber reinforced plastic and Titanium and Aluminum alloys. Holes were made with Atlas Copco PFD-1500, a pneumatic drilling machine with automatic tool feeding. A MAPAL hard-alloy six-toothed...

An economic efficiency model of spacecraft is developed. Besides, such economic efficiency indicators as profitability index and payback period of a project are designed. This model is modified to calculate the economic efficiency of a service spacecraft and as a result an overall index of project efficiency...

Compact plate-fin heat exchangers are extensively used in automotive, marine and aviation industries. The thermal stress in structure of heat exchange surfaces is sufficient and leads to reduction of the resource of such devices if they are used for cooling hot air (300…600 ºС). The utilization of the...

The article discusses the effectiveness and different areas of using innovative navigation systems for transport, different markets and participation in international transport projects. The problems of ensuring information security in the operation of navigation systems in different markets and innovative...

Strengthening of parts and units of machines, increased reliability and longer service life are an important task of modern aerospace industry. As promising materials for protective-strengthening coatings, matrix composites based on ternary system Fe-B-FenB are offered. The aim of the research was to...

The most important raw material component in the production of most types of carbon products is binding materials, the quality of which largely determines the physical and mechanical properties of the product. A favorable combination of high coke ability and low viscosity in the molten state distinguishes...

The paper reports on fuels and lubricants as well as composite materials used for modern aviation. Fuels for jet aviation and their characteristics are discussed. Various petroleum oils and specialty liquids are analyzed. Possible applications of petroleum-derived modern composites for MS-21 are considered....

In present paper there is the refinement method of the non-rigid shafts turning work meant to be provided. There are foundations to the axial forces control necessity gained. The unit that outfits structured functional scheme of the selfcentering rests (SCR) is presented. The main source of rests work...

To control the angular velocity of the auxiliary electric motors of electric locomotives, controlled converters are used, making it possible to implement various methods for controlling the electric motors of direct and alternating current. Depending on the technical and technological conditions, different...

The possibilities of operative management of passenger traffic with the aim of adherence to schedules and intervals represent a serious issue in planning of city passenger traffic. This is a topical issue for cities having a network of roads and streets featuring the so called deep-rooted traffic jams....

The article considers the trend of development of the aircraft building industry in the direction of industrial robotics application. Questions on achieving high assembly accuracy, application of robot manipulators in assembly processes are considered. Intermediate results of calculating the accuracy...

The goal of research is to develop a conceptual solution of the problem of transport vehicle adaptation to operation in the north and arctic regions of the Republic Sakha of (Yakutia) and to establish a business system to make the area more accessible for vehicles. Methodology and research technique...

This article examines the reasons for gatherings of mountain areas; the relationship of malfunctions of the technical systems of the wagon; proposals for the detection and elimination of the causes of their formation

The main purpose of laboratory tests is to obtain experimental data for the development of mathematical models of the functioning of silent blocks of car suspension to develop a method of diagnosing. The object of the study is the process of functioning of the silent block of the car suspension. Methods....

The paper aims to identify the influence of deicing chemical contaminating automobile headlamps on light intensity in wintertime. Methods. Researches on the influence of deicing chemical contaminating automobile headlamps on light intensity were analyzed. Experiments on automobile lights contamination...

The article conducts the study of the circulation of power in the diagnosis of the car on the brake stand that is kinematically connected with the supporting rollers. Case study. It is suggested that the longitudinal displacement of the wheel operating in braking mode on two kinematically connected support...

The competitiveness and longevity of machines and mechanisms are a vital task of modern industry. Its solution is based on research of methods that uniquely create a structure with specified physical and mechanical properties. Modern studies of promising methods involve the use of a large number of fields...

Under certain processing conditions, the relationship between the anodic current and the polymer material that was changed during the processing by electrophysical parameters was substantiated and determined on the basis of the equation of high-frequency heatin of the review, the advantages and disadvantages...

The paper considers plane and spatial (processional) eccentric transmissions and describes the procedure of their modeling. A computer analysis of the obtained models was carried out, which made it possible to evaluate the operating capacity in the absence and presence of elastic deformations of the...

The purpose of the research is to study how the shape of a geometric profile of the periodic raceway affects kinematic accuracy and smooth operation of the resourceeffective planetary radial plunger transmission with intermediate rolling bodies. The shape and computer model for a geometric profile of...

A series of experiments for the melting of cast iron GI15, according to the sandwich-type scheme of the process with a modifier (composition 1, 2, 3) did not reveal any significant differences in the mechanical properties of the modified samples, depending on the mode of administration. Surface examination...

the article describes the results of the development of a new criterion for assessing the quality of piloting. The difference between this criterion and the traditional one is that it is an integrated assessment of the quality of the execution of the landing maneuver and characterizes not only the error...

This paper is devoted to the issues of simulation and calculation of thermal processes in the system called “Human body – Thermal protection - Environment” under low temperature conditions. It considers internal heat sources and convective heat transfer between calculated elements. Overall this is important...

The article briefly discusses the general mechanisms for the occurrence of lightning. Based on satellite data, the total number of lightning on the East Siberian Railway (ESR) in the summer is estimated.

At present special machines with built-in electric drives, including the electric drive of rotation of the wheelset, are used for turning the wheelset bandage without moving it from the locomotive. On the other hand, to move the locomotive to the turning point of the bandage, it is necessary to use an...

In this paper work, the effect of operational factors on the working sections of the ESRW track on the fatigue life of rails is investigated. Among the factors taken into account, the following are used: the effect of the axial load, the speed of rolling stock, the characteristics of the rolling stock,...

The main purpose of the work is to confirm influence of operating conditions at low temperatures on change in braking characteristics of cars. The factors influencing the result of braking are determined, cars from the general set of all vehicles operated in Ulan-Ude are selected, taking into account...

The article presents an algorithm of forming dynamic table of routs for multimodal passenger transportations. The algorithm selects the optimum route using one of criteria: fare, travelling time, comfort level. It is shown that the proposed method can find routs with minimum number of transfers. The...

We propose an approach for creation of a mobile version of a Trailer Backup Assist System. The System consists of a mobile device (tablet, smartphone, etc.) with a specialized software and two easily removable sensors with a wireless communication channel to determine the steering angle of the driver...

The article presents the method and results of modeling of electromagnetic safety conditions in traction networks on railway sections passing through engineering structures: galleries, bridges, tunnels. Metal structures of engineering structures significantly change spatial distribution of electromagnetic...

In Russia, in the last decade, practical steps for rise of machine-building production are taken. The key role belongs to metal working, development of progressive methods of production of details of machines of high constructive and technological complexity. The most effective is the way of intensification...

The developed finite-element model of the assembly structure of a riveted joint can be used to a) calculate the stressstrain state of joint elements in elastoplastic forming, including rivet point formation; b) take into account residual stresses following elastoplastic deformation under external loading...

In this paper, the authors consider the use of data representation algorithms in automated control systems in railway transport. Examples of several algorithms illustrate the approaches that are used when creating such solutions. The issue of the stability of data representation algorithms in the methods...

In the article, using the example of a three-mass oscillating system, a procedure for the synthesis of motion control is presented, based on the determination, by solving the inverse dynamic problems, of the control actions that provide the desired character of the oscillating motions for individual...

The paper presents a method for the formation of an exact self-similar solution of the hydrodynamic calculation of a wedge-shaped support (slider, guide) operating on viscoelastic liquid lubricant caused by the melt of the guide, taking into account the dependence of viscosity and shear modulus on temperature....

The article is to address the problem of developing a transportation model for agglomeration. The approach to designing this model in urban agglomeration through a combination of several transportation demand models is examined. The estimation method for traffic flow distribution between the cities within...

The article describes the structure of technologies for increasing the strength of the cutting part of the saw. The article also presents the results of analysis of existing technologies (metallization and surfacing, welding, doping methods), allowing one to obtain a composite with specified characteristics....

The technique of creating a technological process was developed with the use of operational electronic models that can be applied at any enterprise with the aim of increasing the speed of technological preparation of production and simplifying the work of employees. The work on the implementation of...

The existing soil cultivators have a number of shortcomings. The authors suggest calculation for elements of the system of deformers in soil cultivators represented as plates with kinked curves. The paper explores a possibility of lengthening of horizontal elements of the system of deformers in rack...

The paper analyzes a regulatory document that specifies undercut forming and parameters. We herein show where, according to that document, it is recommended to form such undercuts, and hence dwell upon problems the document fails to tackle. Discussing a standard-undercut part, we demonstrate how and...

The article describes the development of the structure of the objects of the monitoring and control system of enterprises of the railway complex. As the basis, within the framework of the development of the interaction of structural elements, lies the concept of the module (as a сomponent). The article...

The solution of the applied problem in the numerical classification determination and identification of social objects realized on the basis of the model of the bi-subject assessment of objects with arbitrary nature is offered. On the basis of the general approach there is a developed model for the assessment...

A continuous change of physical and mechanical characteristics and operational properties of functional and structural materials demands a corresponding adjustment of the cutting tool material for machining. The adjustment involves the development of a new tool material and sometimes a new design tool....

The article deals with the issues of improving the reliability and durability of connecting rod supporting surfaces in crank mechanisms and internal combustion engines. The disadvantages of the currently used connecting rods are considered. In the process of the crank mechanism operation, due to intensive...

In the article, the power consumption of pump station control systems was simulated in the iThink software package. For this purpose, simulation models of two control systems to control the oil level in the pump station were developed. In the first of these, only the frequency converter was used as a...

The influence of the special modification of epoxy resins and polymer composites based on them on the basic properties of the composition is investigated. Modification is perform in order to reduce the damage during machining holes. The dependence of thermal effects of processes depending on the degree...

Procedures of control actions selection are considered for the purpose of state parameters adjustment to the feasible region. The calculation procedure is divided into two stages – steady state calculation (equality constraints) and state adjustment to the feasible region (inequality constraints).

The issues of ensuring of guaranteed, with a given probability of the flow of the medium, the tightness of metalpolymeric sealing joints of the hydraulic systems of apparatuses and units are considered. Taking into account the mutual influence of the microasperities of the rough surface, the dependences...

The paper aims to investigate the possibility of using functional semantic networks for solving optimization problems in mechanical engineering. The results of the research are based on the application of the methods of the functional semantic network theory, the set theory, the graph theory and classical...

The article analyzes methods used to identify technological parameters for combined forming of double curved skins. The combined method involves elastic plastic bending and shot peening. The results of finiteelement simulation of these technological processes and their combinations are described. The...

The present article is devoted to description of some major factors influencing the danger of a pedestrian crossings zone. The review of the factors affecting the number of «vehicles - pedestrians» conflicts in the pedestrian crossing zone was performed. An example of the developed program for determining...

Developed SmartEnergyCoating can be used as a thermal insulation coating. This is able to compensate and equalize thermal loads of structural elements of constructions. The effect is achieved due to the heat-compensating elements with the phase-transition material. In addition to thermal protection properties,...

The paper considers the problem of calculation of thermal characteristics for transmissions with intermediate rolling bodies, as well as the selection of lubricants and the rational design of the speed reducer, taking into consideration the heat transfer in the transmission. The results of a theoretical...

The paper presents the analysis of metalfluoroplastic materials. Russian metal-fluoroplastic materials are not meeting the requirements of regulatory and technical documentation which was adopted by Russian aircraft industry. The review of patents in the area of the methods for obtaining metal-fluoroplastic...

The article outlines the main prospects for the implementation of the strategic program for the construction and operation of high-speed traffic in the Russian Railways holding company. It was revealed that the introduction of new technological schemes of HS and SHS implies the provision of high-quality...

The issues of the estimation of transport accessibility of the area, as well as influence of transport accessibility on per housing square meter price, are considered in the article. In particular, the dependence of the possible per square meter price on the value of transport accessibility has been...

The article presents analytical equations for determining the relative pressure losses in suction and discharge processes, both including and excluding the liquid compressibility; they were obtained based on an analysis of the approach to determine the relative pressure losses in the suction and discharge...

The results of a study of the change in the microstructure of welded joints of rail steel are presented. Comparison of various methods of structural factor analysis is presented. Comparative studies of various methods of analyzing the structural factor in welded joints of K76F rail steels according to...

Selection of optimization results of abrasive wheels characteristics of the surface quality with fuzzy logic involvement are carried out in flat grinding conditions of high-strength aluminum alloy 1933T2 parts. The quality of grinded surfaces was evaluated using three groups of parameters: roughness,...

The models of multivariate analysis of variance and models of artificial neural networks based on the D-optimal design of experiment were carried out to predict the relative contact bearing area (tfМ, %) of the parts from titanium alloy VT22 during grinding. Parameter tfМ of part surface, measured using...

The results of the research are concerned with multiobjective optimization of low-rigidity corrosion-resistant steel parts grinding, based on the models of multivariate dispersion analysis with error standards minimization.

The concept of economy’s infrastructure component priority development assumes a significant increase in investment in new construction projects and an increase in the capacity of the railway infrastructure in Russia. Macroeconomic efficiency of the investment program is the most important instrument...

Shot peening is widely used in forming panels and sheaths. Due to a shot peen impact on a processed surface, a specific microgeometry is formed, a characteristic feature of this microgeometry is the numerous traces of shot (in shape of the dimples) with different diameters and depths. A presence of these...

The topicality of research is determined by the progress trend in the development of the gearing technology consisting in the upgrading of power transmissions based on the multi-threaded power and kinematic principles of the rotation transmission. Maximum efficiency is characteristic of the harmonic...

Machining of workpieces under low rigidity of equipment is often accompanied by excitation of self-oscillations impeding the technological process. Among the causes of selfoscillations, there is their regeneration on the cutting surface. Self-oscillation regeneration can be controlled by target impacts...

Safety in automotive engineering depends very much on the brake system and its availability for use. That ability is usually tested on stands having cylindrical drums or on stands in the form of flat plates. Functionality of the brake system means not only slowing down a vehicle, but requires achieving...

The need for an accurate mathematical description of the dynamic processes occurring in the running parts of the railway vehicles is substantiated, taking into account the real operating conditions of the rolling stock. A mathematical model of motion of vehicles with a variable structure of a system...

The paper proposes a new variant of additional support improvement of the pipelayer boom. The supposed technical solution allows one to increase smoothing and stability of pipelayer operation. The result is achieved by adding extra elements into the construction of the pipelayer boom support. The proposed...

The paper gives the results of studies devoted to determining the degree of influence of the traffic flow on environmental situation near trunk road areas in Omsk. The research was conducted in accordance with the methodology presented in GOST R 56162-2014 [xx], which allows calculating the amount of...

To improve the efficiency of the separation of powdered materials which are prone to aggregation, internal separator devices are used that contribute to the disaggregate material particles. For the most effective destruction aggregates of particle during physical contact with devices, it is necessary...

The article deals with the problem of classification of non-normative errors in measuring instruments. The use of such high-tech methods for creating integral joints, like induction soldering, electron beam welding, diffusion welding, is complicated by the presence of errors in measuring instruments...

This paper considers the basic technologies of active removal of space debris from the geostationary orbit. For two of them: coupling of service spacecraft (SC) with the space debris item with the help of an arm of the service SC (rigid link) and capture of the space debris object with a net or a harpoon...

The article reveals the cause of road accidents in the passing direction on the federal roads of the Krasnoyarsk Territory. Analysis of the composition of the traffic flow showed that 50% of cars in the Russian Federation are not equipped with the ABS system. Studies of the magnitude of the braking distance...

Modern automobiles equipped with an accumulator fuel-delivery system can fulfill the most demanding operational and ecological requirements. However, when fueldelivery components (predominantly, electrohydraulic injectors) break down, it is difficult to analyze their faults. Therefore, studies aimed...

This paper presents the findings of an investigation into the influence of silicon carbide on weld metal hardness in arc welding and build-up welding with coated electrodes. It is shown that the hardness of the weld bead increases with increasing silicon content. Decreasing the content of solid solution...

The article deals with the issue of transport accessibility in agglomerations, large cities and adjacent areas. Examples of individual and public transport speed effects on suburban boundaries are provided. Data on transport accessibility of Irkutsk agglomeration consisting of suburbanized areas of different...

For optimization of geometrical parameters of the seal of movable joints of machines, a corresponding mathematical model is developed. For the computer implementation of the model, «Programme for simulation of piston seal" in Object Pascal in integrated programming environment Borland Delphi 7 is developed....

When the moist soil is excavated, the soil sticking and freezing to the working units of the earth-moving machines take place. It is the phenomenon that considerably reduces the plant`s efficiency. There are four main groups of methods intended for eliminating adhesion of soil to the surface of the working...

In recent years the cargo carriage ramped up dramatically, the structure of the changed, the number of vehicles with a loading capacity over 7 tons has increased thus causing the increase in th load on road pavement. Modern regulations regarding the calculation of flexible pavement fall behind modern...

Modified wood is used in the form of sliding bearings in friction units of various machines and mechanisms, mainly operating under severe operating conditions (combines, rock loading machines, belt conveyors). Wide use of such bearings is constrained by low thermal conductivity of wood. Technology and...