СВІТОГЛЯДНІ АСПЕКТИ МІЖНАРОДНОЇ СПІВПРАЦІ ОСВІТНІХ ІНСТИТУЦІЙ УКРАЇНИ ТА ПОЛЬЩІ (World view aspects of international cooperation of the Ukrainian and Polish educational institutions)

Показано, що проблеми євроінтеграції “постсоціалістичних” країн зумовлені ігноруванням світоглядних особливостей їхнього населення. Вказаний напрям наукового та прикладного вирішення цієї проблеми силами науковців та викладачів вищої школи. Описана спільність цієї проблеми для Польщі та України і якісні переваги кооперації ВНЗ цих країн у цьому напрямі (It is rotined that the problems of eurointegration of “postsocialisticheskikh” countries are conditioned ignoring of world view features of their population. Direction of scientifi c and applied permission of this problem is indicated by forces of scientists and teachers of higher school. Community of this problem for Poland and Ukraine and high-quality advantage of co-operation is described INSTITUTE of higher of these countries

STABILITY OF WHEELED VEHICLES AS COMPLEX OPERATIONAL PROPERTIES

Different views on the definition of «stability of wheeled vehicles» are considered and the author’s own definition is offered. A version of the structure of stability properties as a complex op-erational property is offered

ЭКСПЕРТНАЯ ОЦЕНКА РАСПРЕДЕЛЕНИЯ РЕАКЦИЙ ДОРОГИ МЕЖДУ КОЛЕСАМИ АВТОМОБИЛЯ

The expert methodology for evaluating the road reaction distribution between vehicle wheels has been developed to determine the maximum values of speed, steering angle and the turning radius of the car on the condition of safe movement, as well as to determine the time of loss of its stability when entering and exiting the turn.Розроблено експертну методику оцінювання розподілу реакцій дороги між колесами автомобіля, яка дозволяє визначати максимальні значення швидкості, кута повороту керованих коліс і радіуса повороту автомобіля за умовою безпечного руху, а також момент часу втрати стійкості при вході та виході з повороту

Application of parallel observation method for automobile testing

Обґрунтовано доцільність використання методу паралельних спостережень з метою підвищення точності визначення параметрів автомобіля при випробуваннях. Показано практичну реалізацію методу паралельних спостережень на прикладі вимірювання сил опору руху автомобіля.The expediency of application the method of parallel observation with the aim of increasing the determination point of automobile parameters in testing is grounded. It is shown practical realization of parallel observation method for example of measuring resistance powers at automobile motion

Modeling of Operation Processes of a Motor Grader Engine During Work Under Unsteady Load

We proposed a model of operation processes of a motor grader engine under unsteady load during technological processes of road construction works. Theoretic dependences of operation processes of a diesel motor grader engine, described by third order differential equations, were determined. The developed mathematical model of operation processes of a motor grader engine under unsteady mode makes it possible to employ known theoretical provisions to improve the system of air regulation in the commercially available motor grader engines. The model is a description of patterns of influence of differential equations coefficients and the load character on a change in the rotation rate of crankshaft of engine, cyclic fuel supply and hourly fuel consumption. Numerical modeling was carried out of load throw off and load gain of a motor grader engine using third-order differential equations in relative magnitudes. It was established that at a decrease in the values of coefficients of differential equation the transition process proceeds more intensively. In this case, time of delay in the response to disturbance and the duration of damping the oscillation process decrease. The proposed model would ultimately optimize engine performance under unsteady modes

A Method of Evaluating Vehicle Controllability According to the Dynamic Factor

The study has explored one of the most important performance properties of the vehicle, which determines road traffic safety, – control in a steady mode. A method has been suggested for evaluating the stability of a vehicle against yaw with regard to the dynamic factor. We have found a dependence of the dynamic factor on the design and operational parameters of the vehicle. The dynamic factor can be reduced through achieving a neutral steering of the vehicle by controlling the ratio of the total lateral rigidity of the tires of the front and rear wheels. It has been determined that a change in the tire air pressure, measured by the developed algorithm, improves vehicle stability against yawing and thus contributes to traffic safety. In the example of the truck Ural-4320, the suggested method was used to determine the total lateral stiffness of the wheels under the condition of ensuring the vehicle's neutral steering. The study has revealed that in the case of an equipped vehicle it is necessary to reduce the tire pressure in the wheels on the equalizer trolley in correlation to the air pressure in the tires of the front wheels. The research results can be used both in operating the existing vehicles and for designing new ones

ПІДВИЩЕННЯ МАНЕВРЕНОСТІ І КЕРОВАНОСТІ КОЛОН НАЦІОНАЛЬНОЇ ГВАРДІЇ УКРАЇНИ ШЛЯХОМ ВИКОРИСТАННЯ БЕЗПІЛОТНИХ АВТОМОБІЛІВ

Relocation of units and subunits of the National Guard of Ukraine performing combat and service missions is carried out on vehicles in a convoys. The main feature of convoy moving in the zone of military operations is that relocation of military equipment is carried out at higher speeds, which requires increased maneuverability of both the vehicles themselves and the convoys as a whole. The experience of combat operations shows that the movement of the automobile convoys from the initial to the final point should take place in the minimum time and with the minimum length of the column for safety conditions. In the article the authors propose to use unmanned vehicles in the combat zone, which will allow to reduce the length of the column and increase its speed. Equipping the vehicles with a combined (hybrid ) electromechanical drive will make it possible to improve the controllability of the convoy when performing various maneuvers associated with changing parameters and trajectory, and also to control the distance between vehicles and the speed of their movement. The authors in the article evaluated the increase in the maneuverability of a convoy with unmanned vehicles equipped with a combined (hybrid) electromechanical drive, and found that:  – the length of  a convoy with unmanned vehicles is less sensitive to changes in speed, since the distance between cars is not determined by the braking distance and speed, but is equal only to the reserved distance; – using of an unmanned vehicles makes it possible to effectively reduce the transit time of small-length sections of the road; – using of an unmanned vehicles allows either to reduce the length of a convoy or to increase the number of vehicles with the same convoy length; – implementing of a driving system of unmanned vehicles in a convoy is most effective with the combined electromechanical drive of the driving wheels. Therefore, the use of hybrid cars by the National Guard of Ukraine is a perspective direction.В статье проведено исследование путей повышения маневренности и управляемости колонн Национальной гвардии Украины. Рассмотрено использование беспилотных автомобилей с комбинированным (гибридным) приводом ведущих колес при движении в колонне. Проведена оценка повышения маневренности автомобильной колонны с беспилотными машинами.У статті проведене дослідження шляхів підвищення маневреності та керованості колон Національної гвардії України. Розглянуто питання використання безпілотних автомобілів з комбінованим (гібридним) приводом ведучих коліс під час руху в колоні. Виконано оцінювання підвищення маневреності автомобільної колони з безпілотними машинами