Univerzitná knižnica - Zborníky
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Item Digital twin – new trend in aircraft maintenance(University of Žilina, 2023) Plichta, Dávid; Bugaj, MartinSafety 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.Item Digitization of aircraft maintenance procedures(University of Žilina, 2023) Pätoprstý, Matúš; Bugaj, MartinThis paper presents the results of research on the possibilities of implementing digitized procedures in the environment of heavy aircraft maintenance and deals with the design and implementation of digitized procedures in the hangar. The object of the paper is the maintenance procedures in section 10/20 of the BMD department in the company ATB s.r.o. which performs maintenance on the cabin and fuselage parts of the aircraft. In the paper we analyze current maintenance procedures in the designated department and xamines the effects of digitized procedures on increasing work efficiency. It proposes the method and individual phases of the implementation of digitized procedures. In the first phase, a solution is implemented to replace the paper form of maintenance documentation, used by mechanics during maintenance, with their digitized form. The other two phases are described theoretically. The thesis identifies obstacles associated with the implementation of the proposed procedures and offers possible solutionsItem Aircraft airfoils(University of Žilina, 2023) Haluzová, Kristína; Bugaj, Martin; Hrúz, MichalThis work deals with the airfoils of aircraft. First of all, it focuses on the general properties of wings. Furthermore, the work deals with the issue of various types of wing shape and compares individual shapes of airfoils, their properties and gradual development. Next, current wings of commercial aircraft are described, dealing with the materials used, types of winglets, mechanization of the wing and also different uses of the airfoils. The work also describes and compares wings of two famous commercial airliners – Boeing 737-800 and Airbus A320-200. In the end, the work also focuses on various concepts of the wings of the future, and how sustainability affects future development.Item Wing platforms of supersonic aircraft(University of Žilina, 2023) Tabernaus, Richard; Bugaj, Martin; Hrúz, MichalGoal of the paper is to describe various wing designs used in supersonic aircraft and their impact on lift, drag and stability with emphasis on high speed civil transport. Paper describes transonic and supersonic region, where formation of shockwaves is prevalent, and air behaves differently from subsonic region. The paper then describes different wing configurations and planforms affect the formation of lift and drag with emphasis on straight wing, swept wing and delta wing planfroms. It also provides insight into the history and the present research of supersonic flight with emphasis on civil transport.Item New trends in UAV construction(University of Žilina, 2023) Iakovlieva, Anastasiia; Bugaj, MartinAviation is one of the fastest developing segments of transport, the development of which did not bypass the construction of unmanned aerial vehicles. The main purpose of this paper is to analyze current trends that may affect the development of unmanned aircrafts in civil aviation. For the purpose of researching new trends in the construction of unmanned aerial vehicles, is needed to define today's state of development and also to divide UAVs by the type. In conclusion, the goal of the article is to define the direction in which the development of construction solutions is currently going and what the potential development in the use of UAVs new trends can bring.Item Use of advanced materials in aircraft construction(University of Žilina, 2023) Timková, Monika; Bugaj, MartinThe latest subject of research in the aerospace industry is the design and manufacture of the lightest possible aircraft while guaranteeing safety. Due to the ever-increasing requirements for weight reduction, various researches are underway in the field of nanotechnology and its associated possible implementation in aircraft design. The primary focus of this article is the analysis of composite materials, their structure, fabrication and different types of composites. At the same time, it focuses on their use in specific aircraft structural components. The main focus of the work is to analyze the incorporation of nanotechnology in the production of innovative materials used in aerospace industry, as well as to define nanomaterials, namely nanocomposites themselves. The result of the work is an evaluation and prediction of the use and implementation of progressive materials in structural elements and their impact on the economy and performance of aircraft.Item Effect of wing surface contamination on aerodynamic characteristics(University of Žilina, 2023) Gego, Filip; Bugaj, MartinThe article is focused on determining the influence of wing surface contamination on aerodynamic characteristics. This work describes the description of the BL 215 airfoil on which the measurements were made, the factors affecting the change in aerodynamic characteristics, the method of obtaining the values necessary to draw a conclusion, and finally the comparison and evaluation of the resulting values. Through the geometric functions in the Inventor program, a wing model with a laminar airfoil BL 215 was created, the aerodynamic characteristics of which were calculated in the Ansys Fluent program.Item Morphing wings of aircraft(University of Zilina, 2022) Jackuliak, Jakub; Bugaj, MartinGoal of the paper is to describe use of morphing wings on aircraft and their possible use to increase aerodynamic efficiency of aircraft. Paper is divided into two parts. First part focuses on design and material requirements of morphing wings as well as describes some of studied concepts. Second part compares studied concepts using gathered data and proposes possible combinations of concepts with goal of further increase of aerodynamic efficiency.Item The importance of an aircraft maintenance program for operator(University of Zilina, 2021) Kulíšek, Jakub; Bugaj, MartinThe paper on the topic The importance of aircraft maintenance for operator deals with the maintenance of aircraft at smaller operators. Maintenance is an important part of the operation of aircraft, and therefore we have created a work in which we pay detailed attention to the overall maintenance of the aircraft. The introductory chapter of the paper reveals to the reader the history of aircraft maintenance from its beginnings, during the first attempts of the Wright brothers, through the First World War, the Second World War to the current maintenance. The second chapter is the main part of the work and the work describes the general maintenance performed on aircraft around the world. In this chapter, we paid attention to the accuracy of the terms and we wanted to bring the reader valuable information that can be used further. In the introductory subchapters, we focus mainly on structural maintenance, followed by the maintenance of components that are located on the aircraft and last but not least, the type of maintenance performed on the aircraft. The chapter concludes with the maintenance review itself and selected maintenance checks. In the third chapter we deal with service and overhaul of aircraft. The subchapters contain information on maintenance planning, maintenance processes and problems that may occur during maintenance. The fourth chapter deals with the selected type of aircraft, namely the Piper PA-28R, where the reader can find general information about the aircraft, but also information about technical parameters. In the last part of the work, we focused on the practical part, in which we worked on a detailed analysis of the comparison of the two sectors. From the sources of information, we tried to conscientiously choose those that will enrich the work and give the reader sufficient knowledge about the paper.Item Analysis of selected aircrafts suitable for PPL training(University of Zilina, 2021) Matula, Dominik; Bugaj, MartinThe main goal of the paper is based on the analysis to define the criteria for selecting an aircraft suitable for PPL training. We achieved the main goal by meeting two sub-goals. The first sub-objective is the analysis of training organizations in Slovakia, on the basis of which we have selected entities for the second sub-objective thus the analysis of selected aircrafts suitable for PPL training. In this work we analyze three, most used training aircrafts for PPL training in Slovakia. We analyze selected aircrafts in terms of three main parts, which include, analysis of technical parameters, analysis of flight characteristics and analysis of operating parameters. Based on the given analyzes, we obtained an evaluation of the characteristics of selected aircrafts, their individual advantages and disadvantages. Other results of the work include the evaluation of criteria that are suitable for aircrafts designed for PPL training. This work can be applied in practice, especially when deciding on the selection of a training aircraft for a student or training organization.