Armored Personnel Carrier Research Articles

THE ECHELONED MINE BARRIERS BREACHING PROPOSALS BASED ON THE EXPERIENCE OF THE RUSSIAN-UKRAINIAN WAR

The echeloned mine barriers system of the russian occupying forces became a real challenge for the Ukrainian military. The first days of the Ukrainian offensive in the Zaporozhye direction revealed that the russians had created very dense minefields on their defense lines. The occupiers used continuous mining of the area, that is several times higher than the normative values for laying mines. The solution to this problem can be found in the application of non-standard technical solutions and tactical techniques that will allow to break through the echeloned mine barriers system of the russian occupying forces. Regarding the technical aspect of this issue solving, there was an interesting technical solution in the history of weapons and military equipment. We are talking about a hovercraft, that is supported above a supporting surface (land or water) on a compressed air layer (cushion) created by ship fans (superchargers). This principle of movement allows them to overcome underwater engineering structures and to break through mine barriers, to move on ice and swampy terrain, to go to the shore equipped in the anti-landing position, to overcome ditches and trenches. These tactical properties of hovercraft can be taken as a basis for the creation of a new generation of armored vehicles based on new principles of movement. In theory, the combat use of a whole series of armored vehicles on an air cushion (tanks, combat vehicles, armored personnel carriers, mortars, demining machines, evacuation vehicles, etc.) will expand the capabilities of mechanized units, will allow to improve existing methods and techniques for breaking through the echeloned mine barriers, forcing water obstacles, swampy and desert terrain. The issue of creating armored vehicles on an air cushion to break the mine barrier requires further research.

Concept-based Extension of SKOS Defense Controlled Vocabulary: Techniques and Implications

A controlled vocabulary is a set of terms that are utilized to represent knowledge in a domain. In the domain of defense, the use of terms such as “command, control, communications, computers, intelligence, surveillance and reconnaissance (C4ISR)”, “armored personnel carriers (APC)”, or “biological and bioinspired structures for multispectral surveillance” denote the core competencies of domain experts and the depth of diverse knowledge. This paper describes the second phase of the pilot project to create a defense-related controlled vocabulary with a focus on the Russo-Ukraine conflict. Applications for data annotation, SKOS hierarchical vocabulary development, and vocabulary quality analysis are used to identify terms in text, express identified terms in military press releases as SKOS vocabulary, and assess its structure. The preliminary vocabulary is extended by 173 concepts. The quality of the vocabulary is validated against a SKOS checker of twenty-four criteria.

TARGET RECOGINITION AND DETECTION USING DEEP LEARING TECHNIQUE

Object detection is a fundamental computer vision function for identifying and locating things in images or videos. Unlike image classification, object detection not only classifies the items in an image but also locates them inside the picture by constructing a bounding box around each one. Defence objects include a wide range of key assets needed for military and security activities. Tanks, armoured personnel carriers (APCs), military trucks, planes, helicopters, naval boats, and unmanned ground vehicles (UGVs) are among the types of vehicles included. Detection of these vehicles is critical for tracking troop movements, analysing battlefield dynamics, and maintaining operational preparedness. The modern defence scenario demands improved surveillance and security measures to successfully counter growing threats. This work suggests using the You Only Look Once (YOLO) method for real-time identification of numerous defence items. The project's goal is to improve security by properly detecting a variety of items, including cars, individuals, equipment, and structures, with a single deep learning model. Methodologically, a broad dataset containing photos and videos of defence items in various locations is collected and preprocessed. The YOLO algorithm is then trained on this dataset, with parameters optimised for high accuracy and recall rates. Performance evaluation include thorough testing on various datasets to determine accuracy, speed, and resilience. KEYWORDS: Target recognition, Detection, YOLO algorithm, Military applications, Flying objects, Vehicles, Sensor integration, Real-time processing, Threat detection, Situational awareness.

Analysis of Experience of Using Small UAVs in the Battlefield: Training Enhancement Perspectives

The article analyzes the experience of the State Border Guard Service units in fighting russian occupying forces inflicting the fire damage with the help of small UAVs and describes the ways to use the acquired experience to develop a training course for the border guard UAV operators. The authors state that nowadays, in the conditions of the of full-scale invasion to Ukraine, active using of unmanned aerial vehicles (hereinafter – UAVs) proved their ability to perform combat tasks, making them one of the new and effective types of weapons in modern military conflicts. It is impossible to imagine a contemporary army without UAVs, as today they perform multiple roles: adjusting artillery fire, pointing and tracking targets, transmitting intelligence information to the headquarters, delivering fire strikes, and most importantly – they can help save the lives of soldiers. Analysis of a year and a half term of full-scale invasion of Ukraine showed that the use of UAVs is several times more effective than the use of traditional types of weapons. In the first days of the war, a huge number of the russian battalion tactical groups (hereinafter – BTGs) were concentrated on the borders of Ukraine, and that significantly outweighed the forces and means of military formations of Ukraine. Analysis also proves that the main striking force during the offensive, according to the governing documents, were armored fighting vehicles, infantry fighting vehicles, amphibious assault vehicles, armored personnel carriers. And it was possible to stop enemy columns only with the help of artillery, aviation, and anti-tank missile systems. Therefore, in modern conditions, it is necessary to create fire damage to enemy armored vehicle groups with the help of attack UAVs of the border guard units. The article considers the effectiveness of such a unit, taking into account the tasks, organizational structure, forces and means necessary to respond to modern challenges and threats on the state border. The authors used the acquired experience of the Border Guard units to develop a training course for the UAV operators of the border guard units. The developers of the course took into account the combat experience and the best European practices in UAV operators training. The learning strategy of the course is based on a student-centred learning approach. It is designed to provide learners with theoretical knowledge and practical skills on the operators of the UAV crews deployed in border surveillance and combat operations. The course is divided in three phases: Independent Learning Phase (online), Contact Learning Phase (offline) and Experiential Learning Phase (at the border guard units).

Effect of Product Quality and Promotion on Purchasing Decisions

As a nation endowed with a diverse cultural heritage and vast reserves of natural resources, Indonesia requires the acquisition and utilization of state-of-the-art defense equipment and technology. The Panzer Anoa is a military armored vehicle manufactured by a company specializing in the production of armament systems and commercial products. This vehicle serves the purpose of personnel transportation, commonly referred to as armored personnel carriers (APCs). Over the past three years, there has been a noticeable decrease in the sales of the Panzer Anoa, a product manufactured by a company producing Main Equipment Armament Systems and commercial goods. According to the data provided by the company operating in the Main Armament System Equipment industry and commercial products, 25 units were sold within three years. This figure falls significantly short of the predetermined target of 72 units, resulting in a sales percentage of merely 34.72%. The study employed a quantitative research methodology characterized by a descriptive and verification approach. The sample consisted of 54 respondents selected using a stratified random sampling technique. In gathering supporting data and information, primary data is utilized, specifically in the form of questionnaire data directly obtained from a company operating in Armament Systems Primary Equipment and commercial products. The study's findings demonstrated that each statement item exhibited validity, as indicated by values exceeding 0.30 and reliability, with results surpassing 0.60. The study findings indicate that the product quality factor exhibited a high significance level, with a coefficient of 0.981. Similarly, the promotion factor strongly influenced the purchase decision, as evidenced by its coefficient of 0.977. Furthermore, the purchase decision itself was found to be significantly influenced by various factors, with a coefficient of the t-test yielded T count values of 3.981 (p < 0.001) and 2.826 (p < 0.001), both of which exceed the critical T table value of 2.007. attributable to other factors. Another factor that has yet to be examined is the value of 0.263, or 26.3%. Furthermore, it is noteworthy that the influence of product quality is more pronounced, with a total effect of 0.4361 or 43.61%, compared to the total effect of promotion, which stands at 0.3002 or 30.02%. It is advisable for companies operating in the Armament System Primary Equipment and commercial products sector to place a high emphasis on product quality. These results can be achieved by consistently enhancing the features of the Anoa Panzer and streamlining its operational processes.

СПОСІБ ОБҐРУНТУВАННЯ ПОКАЗНИКІВ ВИРОБНИЧИХ МОЖЛИВОСТЕЙ СИСТЕМИ РЕМОНТУ БРОНЕТАНКОВОГО ОЗБРОЄННЯ І ТЕХНІКИ ОПЕРАТИВНОГО УГРУПОВАННЯ ВІЙСЬК В ОПЕРАЦІЇ

In the conditions of modern operations with the enemy’s use of high-precision weapons, the amount of average daily losses of armored weapons and military equipment (BTOT), for example, in the compounds and parts of the OUV, which conducts the operation, can reach 7-10%, and losses in the first day alone – 20 – 25%. This amount of losses of BTOT units and parts of the OUV may lead to the fact that after 3-4 days of the operation they may become limited in combat capability and may not complete the combat tasks assigned to them in full. Therefore, the system of complex repair of damaged BTOT samples will play a major role in maintaining the combat capability of troops during the operation. This causes the need to develop requirements for the production capabilities of this system, in particular, for its main element – the system of repair (repair and restoration) bodies, thanks to which the system under consideration would be able to meet the needs of the troops in the conditions of modern operations. These requirements are related to the determination of the necessary average daily productivity of repair bodies for the repair of one or another type (group) of weapons and military equipment (OMT), the required number of repair departments (platoons), the labor intensity of a certain type of OMT repair, the probability of developing the OMT repair fund, etc. The purpose of this article is to propose a methobability apporoach to the substantiation of the indicators that characterize the system of repair of armored weapons and equipment of an operational group of troops, which takes into account the influence of the main external factors on the process of repair of armored personnel carriers. This is the approach allows you to determine the main indicators that characterize the studied system with sufficient completeness. Keywords: maintenance and repair system, armored weapons and military equipment, repair and restoration bodies.

Creation of a remotely controlled ground complex based on a serial armored personnel carrier

The analysis of foreign samples a remotely controlled ground complexes of the heavy military purpose and samples of the light armored combat vehicles, which are in service with the Armed Forces of Ukraine, for carried out to create a combat remotely controlled ground complex. The choice of the BTR-4E serial armored personnel carrier for construction on the basis of its combat remotely controlled ground complex was substantiated, and an analysis of the armored personnel carrier's design was carried out for the possibility of implementing remote control of fire and movement. The structure of construction a combat remotely controlled ground complex based on the BTR-4E serial armored personnel carrier is proposed.

Trends in Development of Military Vehicles Capabilities Based on Advanced Technologies

Abstract This paper presents the challenges and perspectives regarding the technologization of military vehicles designed to be used in combat operations or in combat support. The technological progress registered in the production of batteries for the commercial automotive field has generated more and more interest in the hybridization or electrification of military vehicles, but also in the utilization of UGVs on the battlefield. In terms of survivability, either discussing about tanks, infantry fighting vehicles, armoured personnel carriers, or light tactical vehicles, in addition to the armor protection offered to the crew, the emphasis is increasingly on the implementation of active protection systems designed to remove or diminish the effects of enemy strikes. Moreover, as UAVs are more and more present in combat operations, the concept of 360 degrees of protection of vehicles has changed now to a hemispherical need of protection, considering the highly effective threats from above. Another actual trend to be considered is the multi-platform concept with distributed capabilities rather than all-in-one platforms, introducing the collaborative combat approach. Nevertheless, considering the complexity of these advanced systems, their high costs when acquiring or maintaining them, and their impact on logistic support, the implementation of such technologies in military vehicles is not that accelerated.

Assessment of the influence of the ADC resolution of the coherent radar on the accuracy of determining the coordinate of the projectile flight

The article considers the development of a heavy-class robotic ground combat system based on the BTR-4E armored personnel carrier. Analysis of samples the heavy class combat robotic ground complexes showed that they can be developed on the basis of serial crewed military vehicles HMMWV (AM General), M-ATV (Oshkosh), BMP-3 (Russia), T-72 (Russia), M113 (Israel), Patria AMV (Finland) or create a new design MDARS (AM General), Black Knight (BAE Systems), "Uran-9" (Russia), TYPE-X (Milrem Robotics). They are made on a tracked or wheeled platform. What unites this class of robotic ground combat systems is a remotely controlled combat module with a 25-30 mm cannon, anti-tank guided missiles, a machine gun and a grenade launcher, which can be controlled from a distance.
 A comparative analysis of the tactical and technical characteristics the BTR-4E armored personnel carrier with military vehicles with a 30 mm cannon in service with the Armed Forces of Ukraine has been performed. As a result, the choice of BTR-4E armored personnel carrier as the basic crew unit for the construction of a heavy class robotic ground combat system has been substantiated.The analysis of the design of control drives of the power plant, transmission, braking system, steering system and combat module installed on the BTR-4E armored personnel carrier was carried out in terms of the possibility of implementing remote control of movement and fire. 
 The structure of a combat ground robotic complex based on the BTR-4E armored personnel carrier with different variants of remote control panels, means of establishing communication channels and construction of a remote control station is proposed.
 For example, the driver's remote control panel may be designed on the basis a tablet or on the basis a simulator for full simulation of control commands. Remote controls for the commander and gunner can be designed on the basis of regular controls and be similar to them for quick training of the crew to work.
 Communication between remote control units and the controlled armored personnel carrier can be arranged using ultrashort-wave radios or via the 4G, 5G mobile network.
 The remote control point can also be developed on the basis a BTR-4E armored personnel carrier, a military vehicle or deployed on the ground. It depends on the concept of application of the heavy class combat ground robotic complex.

Thermal and spectral analysis of a pool fire in an engine compartment: Experimental study on the influence of ventilation and fuel depth

Engine fire hazards in vehicles are a threat to the personnel, inducing potential fatal injuries as well as damage to the vehicles themselves and their operational capabilities. Thus, it is important to assess the fire dynamics inside a non-confined engine compartment, here with an engine-cooling fan flow. A n-heptane pool fire was used to conduct a parametric study varying pan diameter, fuel depth and ventilation flow rate in a scale 1 compartment representative of the engine block of an APC (Armored Personnel Carrier). The results showed that an increase of the ventilation flow rate decreases the mean top temperature alongside the hood but increases the mean temperature in the wheel arches. The latter can be explained by the movement of hot gases to the sides of the compartment and was confirmed with a side to center temperature ratio. For the biggest ventilation flow rate, the temperature in the wheel arches of the compartment exceeds the temperature directly above the flame in the steady state of the fire. This temperature evolves linearly along the slope of the hood. A spectral analysis of the flame showed that the oscillation frequency is tied to the pan diameter from standard correlations but is insensitive to the fuel depth or ventilation flow rate investigated range.

Hydropneumatic suspension testing of a wheeled armoured personnel carrier

The purpose of this study was to determine the effect of gas pressure and temperature on the spring characteristic of a HP strut used in a wheeled armoured personnel carrier. The research was performed based on a simulation model. Data to validate the model were obtained during experimental tests. The results indicate, among other things, that the friction generated in the seals is an important source of resistance force. Comparison of the simulation results with the measured characteristics indicates a proper modelling of the strut operation. Simulation studies have indicated that it is easy to modify the required suspension parameters by adjusting the initial gas pressure. A linear effect of pressure on static deflection can be assumed. Temperature has a strong influence on the spring characteristic. When it changes, significant changes in vehicle height are observed due to the lack of a compensation system. The temperature changes are not only due to changes in ambient temperature, but also by intense heating of the HP struts caused by the vehicle moving over rough terrain.

Dynamic loads on the roof plate of the wheeled carrier during the firing of a 30 mm cannon

On the battlefield, modern vehicles perform a variety of roles. Transportation is one of the most fundamental. Operating in different terrains, including urban areas, means exposing the crew to different hazards. To increase crew protection, passive and active protection systems are used. On the other hand, in addition to protection, support of the infantry in offensive operations is an equally important activity. The most common solution for medium wheeled vehicles is a manned turret. The weapon is a 30 mm cannon. Nowadays, there is a trend towards installing systems that allow such weapons to be operated remotely. This minimises the exposure of highly trained personnel. This paper presents the results of a numerical study of the dynamic loads on the roof-plate structure of a wheeled armoured personnel carrier resulting from the firing of the vehicle's main armament. It includes the values of the strains and stresses in the upper plate structure and the forces transmitted by the brackets connecting the roof plate to the bottom plate, and an assessment of the risk of using such a system on the safety of the vehicle structure and its crew.

44-day Patriotic War in the Azerbaijani press

44-day Patriotic War in the Azerbaijani press

АЛЬТЕРНАТИВНИЙ МЕТОД РОЗРАХУНКУ СНАРЯДОСТІЙКОСТІ БРОНЕВИХ КОНСТРУКЦІЙ БОЙОВИХ КОЛІСНИХ І ГУСЕНИЧНИХ МАШИН

The purpose of the development is to find alternative methods of strengthening the protection of BMP (APC) against modern anti-tank weapons in the attacking order of battle of a mixed mechanized (tank) battalion of the Armed Forces. The difference of the project underlies in the possibility of choosing the optimal ratio of protection and mobility in order to increase the combat effectiveness of the samples of the OVT of the Armed Forces of Ukraine. Аn original concept design of heavy (assault) IFV-64 «Sluch» layout was developed during the work on the basis of existing IFV and tanks structures by selecting successful solutions, optimizing and reconfiguring them. This project eliminates passivity of the landing party, isolation of the crew. High security and mobility ensures the effective use of the main and landing weapons, especially in the front and side sectors, all-round surveillance of the battlefield, safe and quick exit from the vehicle in battle and landing in it, reloading ATGM launcher. The vehicle is a hybrid of the T-64A (T-64B1) tank body with reinforced frontal and side projection armor, an improved BMP-2 type armament complex in the turret with complex circular rotation armor. In terms of its security and mobility, it is superior to promising heavy infantry fighting vehicles and armored personnel carriers of NATO countries. The practical significance of the development underlies in the restoration of the lost active concept of modern BMPs, the possibility of improving and finding weak points in the armor protection of combat wheeled and tracked vehicles of the light category, a significant reduction in the development time of OVT, saving materials and finances Keywords: projectile resistance, armored construction, conditional damage, safe velocity of the projectile, coefficient of even durability of the material.

МЕТОДИКА ЗАБЕЗПЕЧЕННЯ ЗАДАНОГО РІВНЯ БОЙОВОЇ ЖИВУЧОСТІ БРОНЬОВАНИХ КОЛІСНИХ МАШИН

The experience of military conflicts of the last decades has shown the constantly growing role of armored wheeled vehicles (AWVs). In recent years, a significant number of AWVs of various purposes have been developed and adopted by the security forces of Ukraine: armored personnel carriers; carriers of anti-tank weapons, anti-aircraft weapons, mortars; machines of radio-electronic intelligence and radio-electronic warfare; medical evacuation vehicles, etc. AWVs that deliver personnel to the battlefield, provide their fire support, or are equipped with powerful weapons and other combat equipment are being the priority targets for the enemy. AWVs damages significantly reduce the probability (or completely makes it impossible) to perform a specific combat task, therefore there is an objective need to ensure a certain minimum level of survivability of an armored wheeled vehicle in order to preserve its combat capability and ensure the performance of the intended tasks. Therefore, the purpose of the article is to create a methodology for ensuring a given level of combat survivability of armored wheeled vehicles. A technique for ensuring a given level of combat survivability of AWVs has been developed. It allows to obtain combat survivability indicators that correspond to a given level of combat survivability by the consistent improvement of the vehicle operational characteristics. The methodology can be used to form the requirements for the technical characteristics of armored wheeled vehicles at the stage of their development and modernization, as well as to assess the compliance of the existing AWVs with the requirements for combat survivability. The direction of further research is to study the impact of other armored wheeled vehicles properties on combat survivability.

Развитие вооруженных сил и оборонно-промышленного комплекса Венгрии: стратегия правительства В. Орбана

The article examines Hungary’s modernization of Armed Forces and expansion of the capabilities of the country’s defence-industrial complex (DIC). Using the neorealistic paradigm, the author analyzes the main directions in which the Hungarian army and the MIC developed during the leadership of the Prime Minister Viktor Orbán. The 10-year development program of the Hungarian Defence Forces – Zrínyi – involves a significant increase in their capabilities by 2026. Official plans to expand and modernize the DIC include the target to make the Hungarian state one of the leaders of the defense industry in the Central and Eastern Europe (CEE) by 2030. The main partners in this area are going to be companies not only from the member states of the European Union (Germany, France and the Czech Republic), but also from Turkey and Israel. Reforming the army and increasing the technological level of the DIC are primarily aimed at strengthening the country’s economy and protecting the state borders and Hungarian citizens both in Hungary itself and in Ukraine, in Transcarpathia. At the same time, the Prime Minister V. Orbán is confident that NATO’s actions can only be aimed at self-defense. This is related to the refusal of the Hungarian authorities to supply weapons to Kiev. However, Hungary is not only strengthening mechanized troops (German Lynx infantry fighting vehicles, Turkish Gidrán armored personnel carriers), the country’s Air Force (Swedish Saab JAS 39 Gripen aircraft) and Air Defense (Norwegian–American NASAMS anti-aircraft missile complex), but also, reflecting on the experience of the conflict in Ukraine, returns to the use of artillery, considers the possibility of producing drones and more ammunition on its territory, and also wants to increase the offensive potential of its Armed Forces thanks to modern multiple rocket launchers like HIMARS. Despite the fact that Hungary, according to V. Orbán, is on the side of the ‘peace party’, in the future, as part of NATO in the CEE region, there will be a modernized army with a proper defence-industrial complex, ready for a ‘new generation’ conflict. The Hungarian political opposition in turn advocates for military assistance to Ukraine and curtailing relations with Russia, while being actively encouraged by the United States.

Оцінка і порівняльний аналіз військової сили України та рф з урахуванням структури та складу їх збройних сил

The purpose of the article is to analyze and evaluate the structures and condition of the Armed Forces of Ukraine and the aggressor country of russia, as well as to develop a methodological approach that will allow to assess and compare the military forces of countries. The article assesses the state and structure of the Armed Forces of Ukraine and the aggressor country of russia by types and branches of the armed forces. Attention is paid to the assessment and comparison of the Armed Forces of Ukraine and russian federation by such indicators as the number of military personnel, the number and quality of tanks, armored personnel carriers, airplanes and helicopters, ships and boats of the Navy, and anti-aircraft warfare systems of the Air Force of Ukraine. The authors substantiate a methodological approach to assessing the military power of countries based on the following provisions: when assessing the military power of the world countries, it is necessary to carry out both a general assessment of the military power of the Armed Forces and the types and branches of the armed forces; when assessing the military power of the types and branches of the armed forces of the world countries, it is necessary to take into account both the number of weapons and military equipment belonging to them and the quality of their structure; assessment of the military power of the Armed Forces should be carried out for countries between which a military conflict or a full-scale war is possible; assessment of the military power of the Armed Forces of the world countries should take into account the possibility of their participation in a particular generation of war. A formula for an integrated assessment of the military power of the Armed Forces of a country is proposed. On the basis of the developed methodological approach and the proposed formula, the military power of Ukraine and russian federation is estimated and compared.

Concept for classification of armoured infantry fighting vehicles by generations

Several foreign and domestic experts have already made the classifi- cation of main battle tanks and several theories have been developed for the establishment of generational boundaries; however, these gen- erational boundaries have not yet been established for the other two important and nowadays increasingly important subcategories of ar- moured fighting vehicles like: armoured infantry fighting vehicles and armoured personnel carriers. In this article I would like to attempt to draw these boundaries, based on which the armoured fighting vehicles of the past decades can be categorized.

Increasing the wear resistance of the working bodies of soil processing machines by nitridation in the ignition discharge

The article considers the problem of increasing the wear resistance of the cutting elements of the working bodies of tillage machines by nitriding in a glow discharge. Solving the problem of increasing the wear resistance of the cutting elements of the working bodies of soil tillage machines reduces the resistance to cutting when tilling the soil, which helps to reduce the traction force of the unit and, in the final version, save fuel. Nitriding of the studied samples was carried out on the UATR-1 installation, designed for surface modification of parts, tools and equipment by the BATR method or similar diffusion vacuum processes. It was established that the following main mutually competing processes occur during anhydrous nitriding in a glow discharge: formation of nitrides, diffusional saturation of the surface with nitrogen, and sputtering of the surface layer. The formation of nitrides occurs at low values of the specific energy flow, the surface sputtering process is activated at high voltage values, and the current density is responsible for nitrogen diffusion into the depth of the metal. The structure and phase composition of nitrided layers is determined by a combination of regime and energy parameters. The ability to control the energy parameters of the armored personnel carrier allows you to significantly expand the area of obtaining nitrided layers with predetermined operational characteristics of parts of machines and equipment while simultaneously reducing the energy consumption of the nitriding process. The research results showed that the amount of wear of a nitrided tool, compared to a non-nitrided one, decreased by 25-40%.

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One of the most important operational properties of cars is directional stability, which affects road safety. Especially dangerous is the entry of multi-axle heavy trucks, whose stability is currently assessed using probabilistic methods of reliability theory. The consequence of this approach is the static uncertainty of the support system (undercarriage), which does not allow to accurately determine the normal reactions on the wheels of multi-axle cars. The classic layout of a combat wheeled vehicle, especially when performing tasks within the city limits, is insufficient maneuverability. The most common armored personnel carrier in the National Guard is the BTR 70 and its modifications. The minimum turning radius along the track of the front outer wheel is 12.6 m. The design of two rotating two-axle platforms will reduce this indicator. Also, such a design will allow, especially in the conditions of urban development, to place a two-platform combat vehicle with the letter "�" or "V" to cover personnel from a threatening direction. And the construction of two machines with such a configuration will provide all-round protection of personnel during combat missions or public order protection missions. The use on four-axle cars of front and rear two-axle rotary platforms with a balance suspension of the leading axles provides (in contrast to the traditional design of the chassis) resistance against skidding at any position of the center of mass and has a higher course stability compared to cars with a traditional chassis part. Thus, the study of the stability of four-axle vehicles with two two-axle rotary platforms is an urgent problem and needs further study.