Кваліфікаційні роботи здобувачів вищої освіти кафедри підтримання льотної придатності повітряних суден
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- ItemDevelopment of method for testing spherical bearings for wear resistance(National Aviation University, 2021-12) Skvortsov, Oleksandr Oleksandrovich; Скворцов, Олександр ОлександровичThe aircraft industry, as one of the most high-tech sectors, is currently undergoing major transformations. This is due before total deep and rapid changes global economy and the new nature of competition. The technology portfolio of the sector is changing very dynamic, replenished with new samples products and not always "open" developments. Some after some time lose their relevance, and not having time to realize their potential, due to the acceleration of the cycle, others move into the category of breakthroughs and become the basis future aviation. A characteristic trend in the current stage of development of aviation technologies is their migration from the military to the civilian sector and vice versa. In other words, technology is evolving "Dual purpose". Currently, several segments in which the turning points of technological sector evolution: aircraft engines, new structural materials and coatings, on-board equipment, aviation fuel. Historically, aviation development has focused on overcoming two barriers – maximum heights and flight speeds.
- ItemMethodological bases for maintaining the operational reliability of the fuel system of a long-range passenger aircraft with two turbojet engines(National Aviation University, 2021-12) Tiurin, Danylo; Тюрін, ДанилоNowadays every aircraft which is operated involves large amount of systems to maintain normal operating conditions. Ensuring aircraft systems reliability and durability is a direct way to provide safety in flight, maintenance department of aviation company is ordered to supply this necessity. Normally, each modern company or operator has own Maintenance programme (MP), methods, instructions, technologies and procedures which are distinctly approved according to manufacturer's regulatory documents and consequently due to International Civil Aviation Organization (ICAO) or State Aviation Administration (SAA) requirements. Modern aircraft carries the newest scientific and technological decisions, this approach needs to improve aircraft efficiency permanently. On the other hand, maintenance methodology is needed to chase the technology step close enough, Aviation authority requirements should be chased in the same way. Given work purpose is obtained to study a long-range twin turbojet aircraft fuel system, investigate ways and approaches for maximizing reliability during flight operations. Fuel system on every modern AC is a complicated complex of interconnected subsystems. Every part which provide fuel delivery is required appropriate maintenance and defined level of reliability. Developing of fuel system efficiency is achieved by rapid growth of the aviation industry (before the COVID-19 quarantine), technologies, appropriate competition between aircraft manufactures all around the world, including Boeing company and Airbus, eternal wishes of designers to reveal new trends and new solutions in aircraft manufacturing.
- ItemAnalysis of wear resistance aviation materials with titanium alloys(National Aviation University, 2021-12) Al-Rybaye, Hasan Falah Hasan; Аль-Рубайє, Хасан Фалах ХасанTo begin with I want to mention that every element has its own life cycle. No matter if it corresponds to elements made by human or some naturally created parts. Though speaking about details that are created for different movement purposes the lifecycle runs much faster. The reason for that is that such details are under great influence of friction forces and hence wear becomes the reason why their lifecycle is so short. Among the maing negative factors that can damage different details is fretting-corrosion. No matter what are the modern methods of repairing and recovery, but unfortunately all of the details that are under cyclic movement cannot avoid its influence. So the way out is to use such materials and especially alloys that can reduce losses of surface and elongate duration of details operation. In our diploma work we will make a set of tests on the special machine that imitates cyclic movement. For obtaining the best results that are close to reality we chose titanium alloy ВТ-22 in couple with different materials and try to compare our important results. Due to this results we will understand the best and most reliable couple for titanium alloy. It’s obvious that titanium is very reliable element and has very high characteristics. So we will try to find out the best metal alloy among the counter specimens. Our investigations will be very useful for different plants, factories and design offices. We will determine the best couple that corresponds to 2 main parameters: prime cost and durability.
- ItemМethod of diagnostic gradual degradation of a turboshaft engine flow path(National Aviation University, 2021-12) Yaremchuk, Rostyslav; Яремчук, РостиславIncreasing requirements for the safety and regularity of aircraft flights necessitated an ever-wider introduction into the practice of operating enterprises of methods and means of technical diagnostics, including aviation engines. The practical application of diagnostic methods determined the need for enterprises in engineering personnel with appropriate training, which was reflected in the state educational standard for training specialists. in the direction 652700 "Testing and operation of aviation and rocket and space technology". In this document, the qualification requirements state that the engineer must know the methods and means of assessing and managing the technical condition of aviation technology. To ensure these requirements in the implementation of the educational process, the discipline "Reliability and technical diagnostics" has been introduced into the list of compulsory disciplines. This discipline is basic for the study of such disciplines as "Technical operation of aircraft and aircraft engines", "Technological processes for the maintenance of aircraft and aircraft engines." At present, the educational literature devoted to the issues of diagnosing aviation equipment is clearly insufficient. And educational literature, from a unified position and at the modern level, covering the issues of control and diagnostics of aviation gas turbine engines in terms of thermogasdynamic and vibroacoustic parameters, is simply not there.
- ItemInfluence of human factor on continued airworthiness system efficiency(National Aviation University, 2021-12) Ovcharenko, Daria; Овчаренко, ДарьяAviation safety depends largely on maintenance. When will it be not done correctly, it contributes a significant share aviation accidents and incidents. Some examples of maintenance errors are incorrectly installed parts and the necessary checks are not performed. in comparison with many other threats to aviation security there may be errors in aviation maintenance technicians (AMT). harder to detect. Often these errors are present but are not visible and have the potential to remain latent, affecting safe operation of aircraft for a longer period of time. AMTs face a set of unique human factors in aviation. They often work in the evenings or early in the morning, in confined spaces, on platforms that are at a high level and in various adverse temperatures / humidity conditions. Work can be physically stressful, but also requires attention to detail. By nature of maintenance tasks, AMT usually spend more time to prepare for the task than to actually perform it. Right documentation of all maintenance work is a key element, and AMTs usually spend the same amount of time updating maintenance logs of how they do the job.