2_2026_sen_5

Title of the article RESULTS OF STUDIES OF THE WATER INTAKE DEVICE OF A WATER-JET PROPULSOR WITH DIFFERENT CROSS-SECTIONAL SHAPES
Authors

BRAIM Dmitry N., Postgraduate Student at the Department “Hydrotechnical and Power Engineering, Water Transport and Hydraulics”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

KACHANOV Igor V., D. Sc. in Eng., Prof., Head of the Department “Hydrotechnical and Power Engineering, Water Transport and Hydraulics”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

VOLKOV Alexander V., D. Sc. in Eng., Prof., Head of the Department “Hydromechanics and Hydraulic Machines” named after V.S. Kvyatkovsky, National Research University “Moscow Power Engineering Institute”, Moscow, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.

SHATALOV Igor M., Senior Lecturer of the Department “Hydrotechnical and Power Engineering, Water Transport and Hydraulics”, Belarusian National Technical University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

AFANASYEV Aleksey P., Director, OJSC “Belsudoproekt”, Gomel, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.

FILIPCHIK Aleksey V., Ph. D. in Eng., Assoc. Prof., Associate Professor of the Department “Energy Efficient Technologies”, International Sakharov Environmental Institute of Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICAL ENGINEERING COMPONENTS
Year 2026
Issue 2(75)
Pages 44–51
Type of article RAR
Index UDK 629.5.036
DOI https://doi.org/10.46864/1995-0470-2026-2-75-44-51
Abstract The article presents the results of laboratory hydraulic studies of water intakes of marine water-jet propulsors with different shapes and cross-sectional sizes. Due to climate change, shallow areas are formed on the inland waterways of the Republic of Belarus, which pose a serious problem for fleet operation. One of the options for increasing the efficiency of the fleet operation in shallow water conditions is the use of water- jet propulsors that ensure the movement of ships at a given speed. However, a common drawback of all modern water-jet propulsors is low efficiency due to high hydraulic pressure losses. Analysis of the results achieved in the laboratory of the Center for Technical Hydromechanics and Hydraulic Machines of the Department “Hydrotechnical and Power Engineering, Water Transport and Hydraulics” of the Belarusian National Technical University on turning sections of pulp pipelines and fire monitor nozzles for fire extinguishing showed that a decrease in hydraulic resistance in these areas can be achieved, within a constant area, by changing the shape and size of their cross-section [1–3]. The design of a water intake pipeline of a full-pressure water-jet propulsor with a circular cross-section, consisting of two turning sections (inlet and outlet) connected by a flow part, was chosen as a prototype for the research. The specified design of a water-jet propulsor is widely used on modern vessels for operation in shallow water conditions. To improve the efficiency of the traction characteristic, the flow part with turning sections was modified in the prototype design by replacing the circular cross-section with an equal-area cross-section having square, rectangular, elliptical and oval profiles. For this purpose, laboratory hydraulic research was conducted with models of water intake pipeline of circular (standard), rectangular, elliptical and oval cross-sections. Hydraulic research was carried out on water intake models manufactured at a scale of 1:30 in the Center of Technical Hydromechanics and Hydraulic Machines of the Department “Hydrotechnical and Power Engineering, Water Transport and Hydraulics” of the Belarusian National Technical University. Conducted laboratory hydraulic research have shown that the optimal shape of the water intake pipeline cross-section is non-circular (rectangular, elliptical, oval). Such geometry of the water intake pipeline allowed to increase the flow rate and speed of water by an average of 8–10 % compared to a round cross-section. The established increase in the flow rate and speed of water makes it possible to conclude that the traction characteristics of the water-jet propulsor can be increased by 3–5 %.
Keywords water transport, water-jet propulsor, water intake, section, axis ratio, paired vortex, laboratory research, pilot plant, bench
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2_2026_sen_4

Title of the article DYNAMIC AND FRICTIONAL PROPERTIES OF A BRAKING WHEEL WITH AN ELASTIC TIRE UNDER VARIABLE NORMAL LOAD
Authors

DIK Alexander B., Ph. D. in Eng., Prof., Consultant Professor of the Department “Road Transport, Construction and Road Machinery”, Irkutsk National Research Technical University, Irkutsk, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.

FEDOTOV Alexander I., D. Sc. in Eng., Prof., Professor of the Department “Road Transport, Construction and Road Machinery”, Irkutsk National Research Technical University, Irkutsk, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section DYNAMICS, DURABILITY OF VEHICLES AND STRUCTURES
Year 2026
Issue 2(75)
Pages 34–43
Type of article RAR
Index UDK 629.113.001.1
DOI https://doi.org/10.46864/1995-0470-2026-2-75-34-43
Abstract The article presents the results of an analysis of the dynamic and frictional properties of a wheel with an elastic tire. The analysis is based on the results of experimental studies of the automobile wheel with the elastic tire, obtained on a bench with a running drum in the laboratory of Irkutsk National Research Technical University. The research results presented in the paper are useful to specialists who design automated systems such as ABS, TSR, ESP, and also develop methods for managing their functioning processes.
Keywords wheel with elastic tire, dynamic properties of tires, friction characteristics of tires, power and kinematic parameters of a wheel with elastic tire, fluctuations in the normal load on a wheel, gear functions, gear ratios, amplitude-frequency and phase-frequency functions
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2_2026_sen_2

Title of the article ANALYSIS OF METHODS FOR ASSESSING THE SIDESLIP ANGLE OF A CAR BASED ON SIGNALS FROM ON-BOARD SENSORS OF PRODUCTION VEHICLES
Authors

LELYUKHIN Vladislav I., First Category Software Engineer of the Software Center, FSUE “NAMI”, Moscow, Russian Federation,  This email address is being protected from spambots. You need JavaScript enabled to view it.

ZAVATSKIY Aleksandr M., Ph. D. in Eng., Chief Specialist of the Software Center, FSUE “NAMI”, Moscow, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.

DOLZHIKOV Maksim A., Software Engineer of the Software Center, FSUE “NAMI”, Moscow, Russian Federation; Student, Moscow Polytechnic University, Moscow, Russian Federation;This email address is being protected from spambots. You need JavaScript enabled to view it.

 
In the section MECHANICS OF MOBILE MACHINES
Year 2026
Issue 2(75)
Pages 15–23
Type of article RAR
Index UDK 629.3
DOI https://doi.org/10.46864/1995-0470-2026-2-75-15-23
Abstract The development and production of electric passenger cars is actively growing all over the world. The ability to apply torque separately to each wheel or axle opens up new prospects for steering and stability control. An analysis of publications on the topic of automatic distribution of torque across the wheels of all-wheel drive electric vehicles has shown that in most cases, feedback control is used to control the torque due to the error of the sideslip angle of the car. Therefore, determining the sideslip angle is a key task when developing an automatic torque control system. Practical sideslip angle estimation algorithms must strike a balance between computational cost, low latency, and resistance to measurement errors. The aim of the work is to determine the simplest and most accurate method for assessing the sideslip angle based on the information received from the vehicle’s on-board sensors. The methods of simulation modeling and experimental processing are used. The article presents a comparison of sideslip angle estimation methods with a validated simulation model of an electric vehicle. The simulation results obtained do not help to identify the unambiguously best method for evaluating the sideslip angle of a car. For the final assessment, modeling in combination with a Kalman filter is required, and the quality of acceleration, longitudinal velocity, and yaw rate signals must also be taken into account during modeling.
Keywords sideslip angle, directional stability, torque control, yaw rate, simulation model, roll angle, simulation
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2_2026_sen_3

Title of the article COMPUTATIONAL METHODS FOR STUDYING THE AERODYNAMIC CHARACTERISTICS OF WHEELED VEHICLES AND THEIR COMPONENTS
Authors

KARABTSEV Vladimir S., Ph. D. in Eng., Assoc. Prof. Head of the Design and Research Calculations Department, KAMAZ PTC, Naberezhnye Chelny, Republic of Tatarstan, Russian Federation; Associate Professor of the Information Systems Department, Naberezhnye Chelny Institute of Kazan Federal University, Naberezhnye Chelny, Republic of Tatarstan, Russian Federation; This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section COMPUTER MECHANICS
Year 2026
Issue 2(75)
Pages 24–33
Type of article RAR
Index UDK 629.01.02
DOI https://doi.org/10.46864/1995-0470-2026-2-75-24-33
Abstract The process of designing, manufacturing and operating automotive products in modern conditions is unthinkable without the introduction of computer technology at all stages of the life cycle. One of the key tasks in this case is to confirm the compliance of the product being developed with the requirements imposed on it using validated computational models at the earliest stages of design. The article uses several examples to show the experience of using computational studies of the aerodynamic characteristics of vehicles and their components. The obtained calculation results are compared with the available experimental data. Recommendations have been developed to improve the accuracy of calculations for estimating fuel consumption.
Keywords wheeled vehicle, WV, flow velocity, aerodynamic drag coefficient, pressure distribution, validation
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2_2026_sen_1

Title of the article THE INFLUENCE OF GEOMETRIC FEATURES OF FRICTION CONTROL ELEMENTS IN PLANETARY GEARBOXES ON VEHICLE COMFORT DURING TRANSIENT PROCESSES
Authors

BUTUZOV Dmitriy V., Senior Specialist, FSUE “NAMI”, Moscow, Russian Federation, This email address is being protected from spambots. You need JavaScript enabled to view it.

NAGAYTSEV Maxim M., Ph. D. in Eng., CEO, KATE LLC, Moscow, Russian Federation,This email address is being protected from spambots. You need JavaScript enabled to view it.

TARATORKIN Alexander I., D. Sc. in Eng., Chief Researcher, Institute of Engineering Science, Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russian Federation,This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section MECHANICS OF MOBILE MACHINES
Year 2026
Issue 2(75)
Pages 5–14
Type of article RAR
Index UDK 62.235 + 534.013 + 629.3.075
DOI https://doi.org/10.46864/1995-0470-2026-2-75-5-14
Abstract This article addresses the issue of low-frequency longitudinal oscillations that reduce the comfort of vehicles with hybrid transmissions during launch conditions. It is demonstrated that traditional analysis based on the tribological properties of friction pairs does not allow for the prediction of this phenomenon. Using methods of modal analysis and state-space mathematical modeling, it was established that the source of the oscillations is the excitation of torsional resonances in an isolated kinematic circuit of the transmission during the slippage of the starting clutch. This occurs when multiple orders of excitation coincide with the slip frequency in the starting clutch. During bench and road tests, the key design factors modulating the friction torque were identified and quantitatively assessed: variation in friction disc thickness, deviation from the piston’s plane-parallel motion, and non-uniformity in the geometric parameters of the return springs. Based on the research results, a set of methods was developed for controlling and assembling friction elements. The implementation of this complex into the final gearbox assembly inspection process has completely eliminated the undesirable oscillations.
Keywords hybrid transmission, friction elements, torsional vibrations, modulation of the friction moment, modal analysis, ride comfort
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