The article analyzes the main information automated control systems for refueling complexes, based on this analysis, the problems of the airport ground handling functioning are identified, the main of which are the inefficiency of managing stochastic processes that occur in failure situations, as well as the lack of automated control systems for the level of purity of aviation fuel from mechanical impurities and water. The way to upgrade Groundstar Inform GmbH - a single integrated airport management system by increasing the capabilities of the system by adding new components is proposed. A solution to the problem of multi-resource planning of aircraft refueling in high-intensity flight conditions, including failure situations, based on intelligent simulation and resource management is proposed. As well as from the point of view of optimizing the solution of business process objectives the development of planning algorithms using the mathematical apparatus of fuzzy modeling and control, fuzzy sets and fuzzy logic underlying the intelligent modeling of processes is proposed. The concept of an adaptive information management system of technological processes of a refueling complex for monitoring the purity of jet fuel, based on dynamic on-line monitoring of the existence of mechanical impurities and water is introduced. The article examines the elements of creating a "Smart Refueling Complex", in which intelligent business processes are combined into one whole due to the use of "smart" operational processes and technological equipment. The introduction of digital technologies, "industry 4.0" tools and trends in automation, digitalization and digitalization of the modern aviation fuel supply for civil aviation is becoming the basis of the digital economy of civil aviation refueling complexes.

Modern domestic and international standards, regulators of the aviation fuel industry, considering the negative impact of the presence of mechanical impurities and water in aviation fuel on the performance and life cycle of aircraft engines, fuel metering equipment, fuel systems of aircraft (A/C), as a threat factor for flight safety, impose high requirements for the purity of aviation fuel while operating aeronautical equipment. At the same time, the causes and sources of water content in jet fuel are a source of economic losses, the most important criterion for the success of the Aerodrome Fueling Complex business. The article considers the task of developing reliable and automated methods as well as technologies for controlling these contaminants, for example for determining water content in aviation fuel when refueling aircraft, and the necessity to minimize an effect of a human factor. The automation of aviation fuel quality monitoring processes, the transition from discrete control methods to continuous ones, from static control methods to dynamic ones (in-line), from indirect methods to direct ones are becoming relevant. The possibilities of end-to-end accounting and analysis of aviation fuel purity parameters at all stages of the aviation fuel life cycle are shown. The article considers the methods and conducts the analysis of known techniques and devices used to determine, measure and indicate actual water content, presence of dissolved, free and total water in jet fuel. The technical solution of continuous automated control of the actual water content level of the jet fuel flow in the processes of aviation fuel supply and aircraft refueling in an information system that provides on-line monitoring and dynamic measurement of the quantitative content of dissolved and free water in the jet fuel flow, is presented. The technical solution for the continuous determination of the quantitative water content in the jet fuel stream is proposed. At the same time, the solution of the problem of monitoring water content in jet fuel is combined with the technological process to control the purification of jet fuel from water. The paper represents an adaptive information management system for continuous monitoring of the water content level of the jet fuel flow, which will allow specialist to substantially increase a level of automatization of aircraft aviation fuel supply technological processes, decrease a negative impact of a human factor, increase economic effectiveness of the aviation fuel supply complex. The system is designed to carry out continuous, automated control (monitoring) of water content in the jet fuel flow at all the stages of the jet fuel movement: receiving, storing and delivering jet fuel and refueling aircraft, in particular fuel and lubricants warehouses (fuel and lubricants), refueling complexes and pre-apron filling points. It can also be used in the fuel system of the aircraft, as a system to prevent water content in the jet fuel. The integration of automation tools will enable us to improve...

In the process of the production activity of the airport refueling complex (RC), because of the movement of jet fuel associated with emptying and filling fuel tanks when receiving and supplying jet fuel for aircraft (AC) refueling, two negative phenomena are bound to occur – water contamination in jet fuel with when interacting with air, its evaporation and entrainment into the atmosphere. This entails economic losses, an increased level of fire and explosion hazard and environmental damage. The amount of damage caused by the natural loss of jet fuel, because of the inevitable emission of vapor-air mixture (VAM) from the RC tank farm, reaches 10...14% of the volume of jet fuel transshipment. In turn, such volume of evaporated kerosene leads to a serious environmental problem – pollution of the atmosphere by aviation fuel vapors, escalating the costs for compensation and taxation of environmental management, potential harming the health of the RC full-time staff. The RC becomes a fire-hazardous object, which incurs expenses for fire protection measures. The article evaluates the quantitative and qualitative losses from evaporation and water contamination in fuel in the conditions of storage, reception, and delivery of aviation fuel from the airport RC tanks. Based on the analysis of the mechanism of deterioration of the aviation fuel quality from water contamination and mechanical impurities, as well as losses of light fractions of aviation fuel caused by the phenomena of strong and inconsiderable breathing of tanks of the tank farm facilities, invariably accompanying the processes of storage, delivery, and reception of aviation fuel. The causes and mechanism of formation of aviation fuel losses from strong and inconsiderable breathing of tanks as well as from saturation of the gas space are established. The recommendations for reducing these losses are proposed. The article analyzes the known methods of reducing (preventing) VAM emissions and considers the task of developing reliable and automated methods and technologies for reducing jet fuel losses, particularly, reducing the level of water content in jet fuel. Automation of the processes to minimize jet fuel losses is becoming relevant. The calculation of jet fuel losses from evaporation during storage, reception, and delivery of jet fuel to the airport RC within the heavy air traffic period concerned with the greatest movement of jet fuel, giving an idea of the scale of economic losses and environmental damage, is presented. The currently existing systems for reducing losses of petroleum products are considered. The article presents a technical solution to reduce the loss of jet fuel from evaporation in tanks by developing an automated system that minimizes the level of water content in jet fuel in the tank and reduces the loss of light fractions of jet fuel during storage, reception, and delivery due to the dehumidification of atmospheric air entering the above-fuel space of the tank, as well as VAM condensation and separation under inconsiderable and strong breathing of tanks. The proposed system for reducing losses of aviation kerosene from evaporation will significantly increase the efficiency of capturing VAM of aviation fuel when stored in the RC fuel tank battery, improve the environmental situation of the RC activity, minimize the economic RC losses from natural loss, as well as mitigate the risk for fire hazard of the airport RC. The system is designed for retrofitting tanks for receiving, storing, and delivering jet fuel, fuel tank batteries, fuel, and lubricants warehouses.

The article discusses the elements of creating and implementing innovative technological equipment for the refueling complex laboratory «TZK» - a single integrated quality management system for aviation fuel supply for civil aviation aircraft, by increasing the system's capabilities by adding new components. The introduction of digital technology, tools, industry 4.0 and trends of automation, digitalization, digitalization of modern aviation fuel aircraft HA become a basic tool of refueling complexes HECTARES in the security of aircraft, civil aviation, which is especially important in high intensity operations. The article presents a theoretical preliminary research of the issue before the following research from the theoretical level to the practical level of problem solving.

In the process of performing a complex of works on refueling of civil aviation aircraft, one of the key issues is to ensure flight safety by controlling the quality of aviation fuel directly during refueling operations. Currently, to ensure the purity of the refueled jet fuel, water separators with filter elements of a normalized degree of purification are installed on the aircraft refueling facilities, the operation of which in the working area provides normalized indicators of cleaning jet fuel from water and mechanical impurities. As practice shows, in the process of refueling aircraft, for various objective and subjective reasons, sometimes there are stochastic situations in which quality indicators go beyond the limits established by regulatory documentation and are not deterministic, and the subsequent state of such a system is described by values that characterize an extremely low level of jet fuel purification with negative consequences for flight safety. This paper presents a mathematical description of the functioning of water separator filters in the working area, where standardized indicators of the quality of aviation fuel are provided during the refueling of aircraft. The article deals with the issue of blocking the refueling of aircraft in the event of the appearance of non-normalized technical documentation indicators of the quality of aviation fuel, which arise due to a number of different factors that lead to negative cause-and-effect relationships for flight safety. Based on the mathematical description, an approach to creating a system for protecting and blocking the refueling process under the working name "Barrier" is proposed. Of the greatest interest for the study are typical water separator filters installed on refueling vehicles as terminal technical devices for fuel purification during refueling of aircraft.