The article describes the developed mathematical model of the rear suspension system of a racing car of the Formula Student class, which allows analyzing the kinematics of the suspension system. Based on it, a search was carried out for the rational location of the hinge attachment points of the springing system to the carrier system using a surrogate algorithm, taking into account changes in the angles of installation of the wheels. The paper presents an analysis of the kinematics of the springing system for the rational coordinates of the attachment points obtained as a result of the calculation, which meet the design requirements and reduce the range of changes in the angle of convergence during the operation of the springing system. As a result of the performed research, the rational location of the hinge points was determined, taking into account the anti-pecking geometry.

When creating modern models of snowmobile motor vehicles, special attention should be paid to the design of power elements, including carrier systems, which can significantly increase their performance characteristics, such as load capacity, ride smoothness, fuel efficiency, and others. The high level of competition in the utility snowmobile segment requires designers to use a high level of modern design methods.

The carrying system of a snowmobile, as a rule, is a complex spatial structure, for the design of which it is necessary to know the direction and value of the loads acting on it from the side of the main components and assemblies, such as front and rear suspensions, steering, engine, transmission, and others. This paper presents a mathematical model of a utility snowmobile, described in the program for numerical analysis of the dynamics of rigid bodies, necessary to determine the values of forces and torques acting in the snowmobile's carrier system. For the calculation, the most dangerous load modes were selected, corresponding to a utility snowmobile. The obtained load values can be used to carry out the topological optimization of the snowmobile carrier system in order to obtain an optimal power circuit in terms of weight and strength.

When creating modern models of vehicles, including snowmobile motor vehicles, special attention should be paid to the design of power elements, since their careful study allows to increase operational characteristics, for example, load capacity, average speed, controllability, and others. There are various ways to reduce the mass of the power elements of the vehicle: the development of rational power schemes for the perception of loads and the replacement of materials with stronger and lighter ones.

The purpose of the study is to develop a snowmobile carrier system that meets the requirements for strength and minimum weight.

The article describes the process of creating a lightweight carrier system using topological optimization methods for a snowmobile with increased payload.

The object of the study is snowmobile motor vehicles. The subject of the study is the use of topological optimization at the early stages of designing the snowmobile carrier system in order to obtain a rational power circuit and reduce the dead weight of the snowmobile frame.

On the example of a utility snowmobile, the main stages of designing the power circuit of the front part of the carrier system of snowmobile motor vehicles are presented. The basic initial data necessary for the development of its concept are determined. As a result of the work, a lightweight carrier system was made from aluminum and steel materials.

The results of synthesizing a mechanism that converts the uneven rotational motion of the rotors into a uniform rotation of the output shaft of a rotary-vane engine (RVE) are presented. The transformation is carried out by a roller-cam mechanism and an associated symmetric differential planetary gearbox. A distinctive feature of the mechanism is the original cam profile, which provides the necessary synchronization of the rotation of the rotors with periodic stops, which allows you to create the best conditions for the transmission of torque from the rotors to the output shaft of the engine. A visual comparative assessment of the effectiveness of mechanisms implementing a conversion scheme with stopped rotors and a harmonic-sinusoidal scheme is given. The coefficient of torque transformation is justified by the evaluation criterion.

The directions of further research in the field of creating RVE with high specific indicators are shown.

The article is devoted to the biography of Axel Ivanovich Berg – admiral engineer, academician of the USSR Academy of Sciences, Hero of Socialist Labor, outstanding scientist-radio engineer and cyberneticist, founder of a number of directions of domestic schools of radio engineering, biological cybernetics and biotechnical systems and technologies.