To estimate the effect of the axial movement of piston rings in the piston grooves on the blow-by in the internal combustion engine (ICE) by an experiment-calculated method. This contributes to the development of practical recommendations for the further improvement of the engine ring seal designs. Abstract theorems were used when modelling the effect of the axial movement of piston rings in the piston grooves on the blow-by in an ICE. They are based on the fundamental theory of heat engines, thermodynamics and hydraulics. The ICE running was analysed using design-theoretical research methods. The effect of the axial movement of piston rings in the piston grooves on the blow-by in the ICE was established. This creates prerequisites for a more accurate assessment of their sealing capacity and for ways to further improve them. Calculated dependences
Мета роботи: мета статті полягає у визначенні перспективної моделі оцінки ризиків доставки вантажів підрозділами Сил Логістики на основі теорії нечіткої логіки. Метод дослідження: основним методом дослідження є метод синтезу моделі оцінки ризиків доставки вантажів підрозділами Сил Логістики. Результати дослідження: в роботі сформовані основні теоретичні аспекти впровадження синтезованої моделі нечіткого логічного виводу щодо оцінки ризиків доставки вантажів підрозділами Сил Логістики. Теоретична цінність: основними результатами дослідження за тематикою статті є: удосконалення методів інтелектуального моделювання логістичних процесів шляхом синтезу моделі нечіткого логічного виводу оцінки ризиків успішного виконання завдань з перевезення вантажів підрозділами Сил Логістики. Тип статті: теоретична.
The article proposes an approach to the formalization of the process of information interaction of the information and control system of an unmanned vehicle with the environment, taking into account external destabilizing effects against the background of intra-system interference. The result of simulation modeling of the process of inverse processing of information arrays under conditions of a priori uncertainty is presented.
The subject area of properties of an unmanned vehicle with an information and control system in conflict and uncertain operating conditions in two versions is considered. The first option is a physical model that reflects the material attributes of the ground adaptive robotic complex using the components of subsystems of generalized design with measuring system of sensors and adaptive control system, as well as materialized elements of technological interaction in the form of multisensor channels for receiving and processing signals. radiation. The second option - an analytical model that reflects the system of formalization of information interaction of the object with the operating environment with objects, which is represented by an ordered set (vector) of source data, logical and analytical expressions, algorithms or rules for their construction. Particular attention is paid to simulation methods of digital information processing in information and control systems of car control. A simulation model with a stabilizing measure for the processing of digital multisensory information in information and control systems of car control in the conditions of destabilizing influences is proposed. The presented joint solution of the problem of restoring the observed image involves determining the conditions of formation of the recovered image taking into account destabilizing factors by simulating them as a noise test useful signal, the coefficients of which are formed by addressing random number sensors (RNS) with uniform distribution law with its subsequent processing in a regularized adaptive system. Keywords: information and control system, destabilizing influences, automotive equipment, information, test signal.
The article analyzes the viability of military vehicles from the effects of conventional damage (bullets, splinters), etc. When fired, a car that stops for a short time becomes an easy target and is destroyed. The presence of a tire pressure control system on the vehicles substantially increases the possibility of continued traffic. However, the opportunities of the mobility adjustment system is limited. The required survivability can only be ensured if special wheels are used. RunFlat (flat tire) is the common name for tireless tire technology. The RunFlat car wheel inserts allow you to continue driving after a tire has been punctured or descended, which can, for example, allow the machine to exit the firing zone. The essence of technology is to strengthen the sidewalls of tires. Hutchinson produces wheel inserts of two types - RODGARD and CRF. The RODGARD RunFlat (Rotary RunFlat) system is capable of providing deflated tires thanks to a special patented design. The CRF RunFlat (Static RunFlat) system is a wheel insert that is used as a single unit of the center of the wheel and tubeless tire. Сommon CSR (Conti Support Ring) system includes a metal ring that is fastened to the rim. The disadvantage of this system is that the support ring will only fit in the high profile wheels. The first cars wish RunFlat in the Armed Forces of Ukraine were KrAZ Cougar and Spartan cars. In turn, the main disadvantages of using wheels with RunFlat include, in addition to the much higher cost, the inability to use the tire after long distances. Airless tire (non-pneumatic) is an innovative development that is a one-piece wheel that can replace both the wheel disk and the pneumatic tire.The main advantage of this design is that the wheel does not require pumping, is not afraid of punctures, is resistant to damage and has a long service life. In this case, the weight of the wheel is almost twice as light, the life of such a wheel is two to three times longer, but the cost is more than twice the price of standard wheels. It is proved that the grip of the road surface in such tires is not inferior to traditional tires, and rolling resistance has decreased to hundreds. The Polaris Defense non-pneumatic wheels guarantee significantly better durability than standard tires and can withstand a 12.7mm bullet. The disadvantage of using non-pneumatic (airless) wheels is to create additional load on the suspension of the car due to their rigidity.
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