Univerzitná knižnica - Zborníky

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Start date: 2022Subject: search.filters.subject.Composites

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    Využitie nových materiálov v konštrukcií krídel lietadiel
    (University of Žilina, 2025) Jánošíková, Soňa; Jackuliak, Jakub
    In this Bachelor thesis, the topic of utilizing new materials in aircraft wings construction was addressed. The technical and physical properties of modern materials were examined in order to assess their potential to improve flight performance and reduce structural weight. The work includes an overview of the evolution from traditional materials such as wood, through aluminum and titanium alloys, to current composite materials. Parameters such as strength, weight, corrosion and fatigue resistance, as well as aerodynamic impact and sustainability, were evaluated. The study highlighted the significant advantages of modern materials, which enable weight reduction, increased strength, and improved aerodynamic performance of wings. A theoretical application of a new material was conducted, and its impact on flight performance was assessed through a conceptual design of the wings of the Discus-2 and ASW-19 glider models. To achieve the objective, computational methods based on MacCready’s theory, basic aerodynamic formulas, and available data from scientific sources were used. Parameters such as glide ratio, optimal speed, wing weight, and flight time on a 300 km course were evaluated. The conclusion of the thesis confirms that the application of innovative materials in wing structures represents a significant contribution to the further development of aviation, while also emphasizing the need for continued research and optimization of technologies.
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    Aircraft recycling system optimalization and aircraft sections re-use possibilities after the end of their economic life
    (University of Zilina, 2022) Chebeň, Juraj; Rostáš, Ján
    Purpose of this article is to evaluate re-use of sections from retired aicraft for further usage and additional optimalization of recycling and re-use of materials used in aircraft construction. With hundreds of commercial airplanes retired every year, the need for innovative approaches in recycling process rises. The concept of re-using parts from retired aircraft is not new. Before scrapping, valuable parts are of course stripped of the airplane. The article assesses if there is possibility to re-use parts and sections that usually end up scrapped in aviation and under which circumstances. Its first part is focused on analysis of procedures currently utilized during aircraft recycling, including brief description of decomissioning process, current state aircraft recycling in general, processes of disassembly and dismantle, existing facilities, description of recycling of alloys and composite materials. Second part deals with legislative, technical and environmental options of aircraft recycling and re-using aircraft sections. Third part focuses describes current parts market, together with proposal how to make it more efficient, current and possible future trends concerning aircraft recycling and re-use of materials and comparison of recycling between USA and Europe