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Multi-shield wing construction options
Zemánek, Martin ; Löffelmann, František (referee) ; Šplíchal, Jan (advisor)
This bachelor’s thesis deals with the design possibilities of wing structures for gliders with a wingspan of 20m. The research section is focused on describing possible wing structural design solutions including multi-beam wing structure, as well as defining specific design parameters and requirements of gilder wings. The practical section is focused on the design and calculation of the structure of a wing with specified geometry and loading in two variants – single-spar and multi-spar. The output of this work consists of two final wing structure designs and a comparison of their mass. In the multi-spar design, the compared wing half has a mass of 33.507kg, while the single-spar variant has a mass of 37.04kg. The use of the multi-spar design therefore results in a mass saving of 3.53kg per wing half, the total mass saving is 7.07kg.
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Conceptual design of light folding hot-air balloon basket
Zatloukal, Tomáš ; Löffelmann, František (referee) ; Šplíchal, Jan (advisor)
The master thesis examines the design of small folding hot-air balloon basket intended for up to 3 people. It mainly focuses on the conceptual and structural design and their stress-strain analyses. After an initial introduction to the general terms used in hot-air ballooning, the thesis is focused on collecting information about folding lightweight baskets produces nowadays. The part deals with the conceptual design of the basket begins with the requirements. After choosing the method of basket folding, the thesis focuses on the structural nodes of the basket, and it also talks about the design of the burner frame. The penultimate part of the thesis verifies the selected structural designs from a strength point of view. The conclusion is devoted to the mass analysis.
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Selection of a solar water heating system for a garden greenhouse
Šplíchal, Jan ; Babička Fialová, Dominika (referee) ; Jegla, Zdeněk (advisor)
The Bachelor thesis deals with selecting a suitable solar water heating system for a garden greenhouse in a specific location in the Czech Republic. The selection of the suitable water heating system itself is carried out based on an overview of commonly used systems of solar heating and by evaluating competitive designs for said garden greenhouse with regards to its layout and location. A part of the thesis focuses on a measured data set showing the real-world behavior of the garden greenhouse in different parts of the year with the purpose of theoretical calculation of essential parameters, which are needed for an indicative calculation of the collector area needed for selected water heating system. The achieved results and parameters are summarized and with them a real potential of the solar water heating system for said garden greenhouse and its value in the sense of prolonging the period of using the garden greenhouse for growing plants in cold spring and autumn months is recognized.
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The entry of a new technical journal on the market
Šplíchal, Jan ; Pálka, Peter (advisor) ; Pokorný, Jan (referee)
Cílem této práce je komplexní náhled na postupy a úkony nutné při nově vznikajícím odborném časopisu se zaměřením na skladbu obsahové části časopisu a multimediální přílohy. Pozornost je také věnována webové prezentaci titulu, která má velkou šanci do budoucna poskytnout, díky svým technologickým možnostem, papírové podobě časopisu zajímavé rozšíření a doplnění. Úvod obsahuje přehled současných vydavatelství působících v České republice a uveden je také přehled odborných počítačových periodik. Zmíněn je rovněž legislativní rámec a právní zabezpečení vydavatelské činnosti. Obsahem práce je také krátký historický pohled na distribuci v ČR a možnosti kompletace výtisků. Jádrem práce je zamyšlení nad obsahovou náplní časopisu, jeho rozdělení na tematické bloky a jednotlivé části. Neméně důležité multimediální příloze je věnována druhá polovina této stěžejní části, kde jsou popsány možnosti vkládání multimediálních příloh, jejich základní skladba a výhody. Závěrečná část se zaobírá možností webové prezentace časopisu. Webové stránky poskytují do budoucna vhodný způsob doplnění tištěného časopisu zejména svými technologickými možnostmi, které papírová forma nemůže poskytnout.
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Structural optimization of 3D-printed Unmanned Aerial Vehicle
Sladký, Martin ; Šplíchal, Jan (referee) ; Löffelmann, František (advisor)
This master thesis deals with the design of the internal wing structure of 3D printed flying wing VUT 714. As a part of this work was performed a load calculation, static strenght test, comparative FEM analysis and subsequently topology optimization was performed. The outcome of this master thesis is a rational design of the wing internal structure based on the load calculation and knowledge of effect of this load on the structure.
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Modification of the landing gear of the Irbis aircraft
Forman, Tomáš ; Vaněk, František (referee) ; Šplíchal, Jan (advisor)
This master thesis deals with the landing gear rebuild from tail gear to nose gear of the M-4 Irbis aircraft. The first chapter presents the aircraft in its current state and includes some technical data, too. The theoretical information about types of landing gears, its characteristics, pros and cons and the typical representatives for each type of landing gear are mentioned in the second chapter. The third chapter is about landing gear loads that occur during landing and about the load calculation according to UL 2 regulation. The following chapter shows the construction of the new landing gear, including some of the suggested, but not realised, designs. In the fifth chapter, there is a landing gear strength calculation of some of the gear components. The calculation is analytical and then uses FEM. The very last chapter then shows the effect of new landing gear on the centre of gravity in its extreme positions. The chapter also compares aircraft masses with both landing gears.
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Landing gear and cargo bay of competition model airplane
Bazakas, Christos ; Jetela, Václav (referee) ; Šplíchal, Jan (advisor)
The aim of this bachelor’s thesis is design of landing gear and cargo bay of an aircraft model for competition SAE Aero Design East 2020. The first part focuses on the rules of the competition. Next part contents known landing gear configurations. Analysis of suitable airfoils follows with selection of the best on efor the model. Last part shows the design of inner structure of the cargo bay.
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Proposal of welds number reduction on aluminium aloys frame doors for rail vehicles
Šplíchal, Jan ; Vaněk, Mojmír (referee) ; Sigmund, Marian (advisor)
This Diploma thesis presents possible proposals of welds number reduction frame doors for rail vehicles welded from profiles from aluminium alloy EN AW 6060, which is heat treated by temper T66. Profiles are welded by TIG process with additional material S Al 5087 (AlMg4,5MnZr). The heat treatment by the welding cycle causes a change in structure of basic material and decrease of mechanical properties due to dissolution of precipitates. To measure the necessary mechanical properties of the material after welding a tensile test was performed on the delivered samples. The resulting values from tensile test were subsequently used as cut – off values in the new door frame design by FEM simulation in Virtual Performance Solution software with PAM – Crash extension. The newly designed frame was welded according to the necessary welding procedure specifications, which are also part of the thesis. The conclusion is devoted to the economic evaluation of the current and new design of the door frame.
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Modelling of health monitoring signals and detection areas for aerospace structures
Šplíchal, Jan ; Hlinka, Jiří
This paper is focused on Structural Health Monitoring (SHM) for aerospace use. It analyses the performance of commercially available finite element (FE) software packages for the simulation of propagation of ultrasonic guided waves (UGW) in typical aerospace structures. The purpose of the research is to support activities leading to the introduction of UGW based health monitoring on aerospace structures, as well as to support the design of future structures with integrated health monitoring. Activities are demonstrated on panels with growing complexity (adding different materials, sensors, damage types etc.). FE simulations are used to identify “detection areas” of UGW sensors. This output can be directly applied to the design of future aerospace structures with an integrated SHM system (to ensure the proper planning of the placement of UGW sensors).
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