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The paper provides an analysis for production of four-wheel drive dump trucks with an articulated frame and it also describes a practical experience pertaining to operation of dump trucks as mining automotive transport. Technical characteristics for some models of articulated dump trucks manufactured in Russia and Belarus are presented in the paper. The paper gives examples for transportation of run-of-mine ore at enterprises of Russia and abroad. The attention has been focused on specific features concerning organizational, technological and design decision making while introducing and promoting articulated dump trucks. It has been established that articulated dump trucks make it possible to improve an efficiency of mine development during construction period and when ore mining and processing enterprises are put into operation especially in geographically remote and inaccessible areas. The paper proposes technological solutions allowing to expand the scope of articulated dump truck application at mining enterprises while using them for quarry development excavating deep deposits of solid minerals. It has been revealed that reduction in overburden volume can be achieved by transition from a certain depth to lower capacity dump trucks or special dump trucks operating on elevated slopes of roads. The paper shows that one of perspective directions for development of mining technology on kimberlite deposits is an opening of lower quarry horizons by peripheral road tunnels of spiral shape while using articulated dump trucks. The presented technological solutions require further research and design consideration and study and they will allow to ensure resource efficiency and safety of surface mining while extracting minerals at previously uneconomic ore deposits. In order to realize an import substitution program for four-wheel drive dump trucks with an articulated frame it is necessary to carry out marketing research on potential market for machines of this class required for open-pit mining in order to justify prospects for provision of the Russian production market.

The paper specifies a conceptual system of logistics and determines basic elements of the logistics system of air transport. The methodology for evaluation of logistics system efficiency of international air communication in the Republic of Belarus has been presented in the paper.

Study of directions concerning development of military equipment, its modernization with the purpose to improve its military efficiency is an actual problem for the Armed Forces, military science, designers and researchers.The paper analyzes and estimates possibilities to use civil equipment for military purpose. Problems pertaining to technologies of double application, diversification of civil equipment in military engineering machinery are considered in the paper.

The paper considers a state of a transport complex of the Republic of Belarus from the point of view of logistics service safety. The general principles for development of a transport safety system are investigated in the paper. The paper has analyzed the Republic transport complex state. A solution of the problem pertaining to transport logistics service with the usage of contractual logistics.

The paper contains an analysis of export of transport services provided by the Republic automotive transport. Structure of expenses associated with operation of automotive transport facilities is presented in the paper. The paper cites directions pertaining to development of international automotive transportation.

Analysis of factors that influence on cutting feed stabilization of horizontal power-producing bed plate of machine tools has been made in the paper. Circuit diagrams and design for better cutting feed stabilization of power-producing bed plates are given in the paper

The problem intending to ensure traffic safety in the zone of a railway crossing is considered in the paper. The paper contains analysis of accidents and technical solutions how to equip railway crossings with the facilities which are designed for organization of traffic and pedestrian safety in the Republic of Belarus. As a result of investigations recommendations are given how to increase railway traffic efficiency in such zones when trains are moving fast. In order to improve crossing designations at street-road network it is proposed to use a light signal working in the mode of yellow blinking when it is allowed to pass a crossing and make road marking of special configuration at the crossing approach. There are also other recommendations on modernization of technical facilities with the purpose to improve safety. At non-intensive railway crossings located beyond urban boundaries and settlements it is suggested to switch-on outdoor lighting at the moment when a train is reaching an approach zone.

The paper provides an analysis that shows application of pump-controlled steering hydraulic drives. Dynamic model of steering hydraulic drive of open-cast BelAZ-75131 dump truck developed at BNTU and also mathematical models for circuit consisting of a metering pump and a turning cylinder and a flow amplifier and a turning cylinder with due account of compressibility and resistance of service drain line. It is noted that on the basis of the given methodology a multi-variant dynamic calculation has been carried out, drive dynamics has been analyzed at various design and component parameters of a metering pump and a flow amplifier, rational values of these parameters has been selected for design development. The paper also gives an algorithm scheme for the solution of the derived equation systems.

The paper contains formulated principles of forming metering systems of hydraulic drives of technological machines on the basis of tap-type hydraulic control valve usage. The paper considers directions in designing dividers, flow adders of multi-motor drives of technological machine working elements. Designs of metering systems ensuring possibility to create multi-flow hydraulic transmission.

The paper contains basic principles of dosage system formation for hydraulic and positive- displacement drives of technological machinery. Rationalization directions of pump designs used in multi-motor drives of technological machinery operational elements are considered in the paper. Design schemes of pumps ensuring possibility to create multi-motor hydraulic transmissions have been developed.

The paper contains a calculation scheme, a mathematical model and calculation technique of dynamic electro-pneumatic drive of a manipulator hand with due account of microprocessor control. The results of calculation of dynamic electro-pneumatic drive characteristics are given in the paper. The given technique can be used while developing perspective electro-pneumatic systems of technological and mobile machines.

Economically justified composition and size of leasing payments are considered as a central and important part of leasing transactions in motor transport. The purpose of leasing payment is to compensate cost of motor transport facilities, accumulate capital and stimulate business activity. Though from the point of view of transport enterprise management some structural elements of leasing payments do not differ the paper recommends to take into account their specific functions because this point has an important theoretical and practical meaning. High and low rates of leasing payments are also given in the paper.

The paper considers the existing variants of drive gear belt manufacturing techniques. The advantages and disadvantages of these variants are shown in the paper. Authors propose their own original import substituting techniques on manufacturing drive gear belts out of local material. The proposed technology includes positive elements of casting and pressing methods in the diaphragm autoclave. These techniques permit to manufacture gear belts of high load-carrying ability and long service due to reinforcing of working gear surface with the help of wear resistant fabric. This «know-how» is characterized by low power- and labour consumption, application of unified equipment, high efficiency of main materials, high ecological cleanliness due to exclusion of finishing operations and formation of waste material and rubber dust. Results of experimental strength and resource tests of local-made and imported drive gear belts are given in the paper.

The paper considers a possibility to make diagnostics of bearing unit in operation by oil film thickness. Diagnostics algorithm is presented in the paper.

The paper contains analytical data of drive hydraulic schemes which have been prepared by Main Special Design and Technical Bureau of Hydraulic Equipment. This work has been carried under control and with actual participation of the paper author. It has been established that principal hydraulic schemes consist of operational schemes which in their turn are subdivided into elementary components, namely: «elementary scheme of preparation and protection», «elementary reverse scheme» and «elementary scheme of complicated movements».While solving the problem structurally in the form of independent units of elementary scheme components it is possible to create control hydraulic block using the building-block approach.

The given paper considers dynamics of the development of diesel engine fuel injection systems. The scheme of up-to-date electronic control system of a high pressure fuel pump is presented in the paper. The interaction of input and output parameters of diesel engine fuel system and a number of requirements to diesel engine fuel system are analyzed in the paper.

The problem of analytical synthesis of the control acceleration for an unmanned aerial vehicle (UAV) during its flight along a complex trajectory, consisting of sequentially located horizontal flight sections, located at different heights relative to the earth's surface has been solved in the paper. The problem has been solved as an analytical definition of the optimal control of a linear non-stationary system for a specified minimized quality functional. The mathematical model of the system is presented in the form of differential equations of UAV motion in the vertical plane of a fixed coordinate system related to the earth's surface. A feature of the proposed methodology for solving the problem is the substantiation of the original form of the minimized functional and parameters included in the law of variation of the control acceleration obtained by known methods. As the components of the quality functional, the values of coordinates and velocity of the UAV are considered and they are specified at the corresponding points in space through which the UAV path must pass, in order to obtain the optimal curvature of the trajectory. The derived mathematical dependences make it possible to implement them on board of an aircraft and, ultimately, solve the problem of ensuring the minimum energy consumption when controlling an object (UAV). Computer simulation of the analytically obtained results in the form of the UAV flight trajectory and the processes of changing its acceleration and speed have shown the efficiency of the proposed technique and the prospects of its use at the initial stage of the synthesis of the UAV control system.

In order to diminish transport attack on the environment the paper suggests a new approach to the solution of the problems which ensure diminution of air basin pollution with exhaust gas. Proposals relative to improvement of ecological characteristics of automobiles and efficient control of ecological safety of transport facilities are given in the paper.

The paper considers a mathematical model of loosely-coupled inertial-satellite navigation complex which has been developed in the class of linear discrete stochastic models. A specific feature of the considered algorithms for integration of navigation data is the possibility to use parametrical optimum evaluation of the linear Kalman filters constructed on the basis of equations. Strap-down inertial reference system of routes and vertical, strap-down inertial navigation system, geomagnetic orientation system, system of air signals, satellite radio-navigation system have been used as sources of initial navigation data. The considered navigation complex allows to obtain the whole spectrum of flight navigation parameters which are necessary for flight operation of a tactical unmanned aircraft.

The paper considers a complex of element interactions in the “Vehicle – Highway” system.

The paper presents an economic model for operation of the national cargo service which is responsible for international freight transportation as a general totality of infrastructure subsystems, customer services and international cargo transportation services granted by national transport operators.

The paper presents a methodology for evaluation of economic efficiency pertaining to usage of automotive transport facilities while executing international cargo transportation on the basis of average internal norm calculation of automotive operational profitability of a specific model under conditions which are typical for the given market by an average carrier.

The given paper presents a development of a technological process pertaining to hardening large-size parts made of die steel. The proposed process applies a water-air mixture instead of a conventional hardening medium that is industrial oil.While developing this new technological process it has been necessary to solve the following problems: reduction of thermal treatment duration, reduction of power resource expense (natural gas and mineral oil), elimination of fire danger and increase of process ecological efficiency.

Local and domestic fuel-energy recourses of theRepublicofBelarusin gross consumption of fuel-energy recourses has been ranked on the basis of the analysis of scientific literature, statistical information and also fundamental documentation in the sphere of energy policy and power saving. The paper proposes to give a special emphasis on usage of products after processing domestically manufactured fuel-energy recourses that have been obtained from local and imported raw-materials with the purpose to estimate a power security level of the Republic from a new point of view.

The paper considers design peculiarities of belt conveyor drums in respect of their operational reliability; their advantages and disadvantages have been analyzed. There are some proposals presenting technical solutions to modernization of belt conveyor drum designs which presuppose reduction of their material consumption while preserving their strength and general rigidity.

Electro-pneumatic and electro-hydraulic drive gears are proposed for remote control of the automobile coupling. Various methods for coupling control have been examined. Algorithms of coupling control in modes of gear-changing and automobile speed-up have been developed. The paper proposes an integral law for controlling an executive coupling mechanism. The law takes into account speed changes and an integral of input action.

The paper contains an analytical investigation of mounting dimensions of the existing hydraulic equipment designs from the point of view of creating building blocks that involve elementary diagrams. A form of abutting plane of hydraulic equipment has been ascertained. This form makes it possible to solve a problem concerning creation of unified element set of hydraulic control blocks