Práce a štúdie - Vydanie 14

Permanent URI for this collectionhttps://drepo.uniza.sk/handle/hdluniza/934

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    Práce a štúdie - celé vydanie č.14
    (University of Žilina, 2023)
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    Ignition system and their purpose in aircraft reciprocating engines
    (University of Žilina, 2023) Vorlíček, Marek; Čerňan, Jozef
    This research describes the function and principles of ignition systems in aircraft reciprocating engines. Physical-chemical processes, which are part of combustion, and the factors affecting them are defined in detail. Types of ignition systems are divided based on main parts and frequency of appearance in aircraft engines. Components of ignition and their function in electric and magnetic circuits are individually described. The future development in ignition systems is defined. The research includes an analysis of the pros and cons of laser ignition in its application in aviation. It presents Low-Temperature Combustion or Volumetric Ignition using Low-Temperature Plasma. An example may be the Microwave-assisted Plasma Ignition System. Engine speed and vacuum in intake are the main parameters influencing the ignition timing curve in Electronic Control Unit Master developed by IMF Soft. This ECU is used in the designed ignition system of testing engine. The designed timing curves were tested, and the results of engine power and torque were compared. In conclusion, the optimal timing curve is evaluated for this reciprocating engine.
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    Digital twin – new trend in aircraft maintenance
    (University of Žilina, 2023) Plichta, Dávid; Bugaj, Martin
    Safety has always been the main concern of successful aircraft operation. Key part of the operation has to be maintenance, which not only removes defects should they arise, but also prevents them from happening in the first place. For this very reason it is necessary to have a reliable maintenance program and practices. In recent years emphasis has been posed on thorough analysis of aircraft and its systems. This is made ever so easier thanks to tools such as the digital twin. Our goal is to research this recent trend and showcase its possibilities. This wouldn't be possible without our previous underlying studies about Industry 4.0, its related matters including maintenance, as well as digital twin itself. Finally, it is important to note that the main goal of our work is not necessarily the creation of the twin, but rather the subsequent measurements, tests and analysis.
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    Overhaul of the piper cub aircraft replica in ultralight category
    (University of Žilina, 2023) Kachel, Josef; Rostáš, Ján
    The subject of this article is focused on the description of the overhaul process involving a classic aircraft design, which is registered under the administration of the Light Aircraft Association of the Czech Republic. The research is divided into three chronological parts; the introduction, the main part and the conclusion. The first part outlines the subject of the research and its individual objectives. The main part deals with the historical background of the Piper Cub type and the current state of operation in the Czech Republic and Slovakia, both from the technical and legislative point of view. A description of the given aircraft will follow and then, mainly, the elaboration of each part of the overhaul process and its individual procedures. Among the individual steps, there will be a description of the required process for increasing the maximum take-off weight of the overhauled aircraft. In the final part, the evaluation of the inputs described above will be performed and the results of the given study will be outlined. The research should provide a comprehensive description of appropriate maintenance and the overhaul process in complexity involving the vintage classic aircraft design under the legislation of the ultralight aircraft category. Another output will be the definition of a procedure for increasing the maximum take-off weight thanks to new, updated legislation.
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    Impact of the COVID-19 pandemic on aircraft leasing
    (University of Žilina, 2023) Hanuliaková, Radoslava; Materna, Matúš
    The article deals with the impact of the COVID-19 pandemic on aircraft leasing. It describes the current state of leasing and airline companies and the overall impact on the aviation industry worldwide. The main objective is to analyze the impact of the COVID-19 pandemic on aircraft leasing and to correctly interpret trends in aircraft leasing during and after the time when the virus was prevalent. The conclusion is devoted to the description of the most advantageous solutions for this sector. As a result of all the issues examined, we have tried to predict what the aviation industry might expect in the coming years.
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    Social media as a tool for airline service quality assessment
    (University of Žilina, 2023) Buday, Adam; Badánik, Benedikt
    Our study investigates the perception of service quality of 12 airlines by using a mixed-method approach that consists of numerical analysis of key performance indicators (KPIs) and qualitative examination of Twitter customer service. Our findings reveal that Twitter is the most popular social media platform in the airline industry, with U.S.-based airlines being the most active. The analysis of customer feedback on Twitter showed noticeable differences between full-service and low-cost carriers, with the former receiving more complaints regarding booking and in-flightservice quality, and the latter receiving more complaints regarding delayed or cancelled flights and poor customer service. Overall, our research provides valuable insights into the significance of social media as a tool for promotional activities and customer service, while highlighting common issues in service quality perception by airline customers.
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    Design and implementation of engine test device for the M601 engine
    (University of Žilina, 2023) Pukač, Andrej; Čerňan, Jozef
    The aim of this article is to create a proposal and documents for the implementation phase of the engine test device for the Walter M601 engine, which after implementation will serve as a teaching and research aid for researching new alternative fuels, testing different variants of propellers and others. As part of our work, we are dedicated to the development of two entire future test segments of device, namely the test stand and the design of the monitoring and regulation part, where we use the original devices, manufactured in compliance with LUN, which was directly designed in the past for the M601 engine and its installation in the L-410 Turbolet aircraft. The design of the test stand will include a 3D design and documentation. The monitoring part will consist of the design of the monitoring panel, which will contain selected engine indicators and LUN sensors, which will be used from the defined solutions of specific requirements and the design of electrical wiring and power sources and modules for the operation of the monitoring and regulation part.
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    Analysis of the implementation of Part-147 in the environment of air transport department and aviation training and educational centre
    (University of Žilina, 2023) Vyskoč, Lukáš; Rostáš, Ján
    The following article is announcing author analysis of EASA Part 147 regulation and its application for the creation of the Maintenance Training Organization under Aviation Training and Educational Centre (ATEC), and Air Transport Department (ATD) in the University of Žilina (UNIZA). Introduction of article includes main targets and methodology of its processing. In the beginning of the work, it deals with theoretical outcomes derived from current regulations relevant to Part 147 with corresponding Applicable Means of Compliance (AMC) which brings essential basics of the MTO. The main part consequently elaborates substantial chapters with direct overview of conditions and requirements to be fulfilled by personnel, environment and full scope of manuals and procedures included in the facilities of UNIZA located in the Airport Žilina. Upon current (existing) conditions it identifies all requirements to be implemented in MTO to satisfy its initial audit and certification. To the most practical outcome of this article belongs MTO manual processed in line with all regulations and their local implementation on the ATEC and ATD environmentincluding training modules and training conditions for on job training itself. In the final chapter there are instructions and recommendations for MTO development as well sustainability of the processes to satisfy also the students' knowledge, skills and abilities for their future transport Authority examination and also for their successful applicability in practice.
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    An analysis of the observations and experiences in regard to the new format of snowtam report
    (University of Žilina, 2023) Drábek, Marek; Kazda, Antonín
    This paper presents a new ICAO methodology for assessing and reporting runway surface conditions, commonly known as the Global Reporting Format (GRF) and its impact on flight crews and airline operation. It explains the background of the system and its effect on safe operation. Furthermore, it compares the current format of the SNOWTAM message with the old one applicable until November 2021. It also presents research which aims to enhance winter operations safety by gathering observations and experiences with the new format of a SNOWTAM report applicable as of 2021. The paper points out the experiences of flight crews gathered with a survey created by the author of this thesis. It also summarises the impact of the new methodology on airplane performance calculations backed by the research. The new system is expected to provide better understanding of the runway situation and give clearer information about contamination of the movement area.
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    Revitalization of the seasonal charter passengers segment in personal air transport
    (University of Žilina, 2023) Seidlerová, Lucie; Rostáš, Ján
    The research focuses on charter passengers and their seasonal impact on charter air transportation. The relevance of the topic is supported by the events that occurred at airports during the summer season. The empirical part of the research is addressed through a questionnaire survey, which examines the behaviour of passengers who use charter air transportation, especially during the summer vacation season. In the final part of the article conclusions of the research are presented. The result of the practical part of the research is the summarization of data obtained from the questionnaire.