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Steel Structure of Observation Tower
Virág, Patrik ; Pilgr, Milan (referee) ; Hron, Lukáš (advisor)
The subject of the diploma thesis is design and structural analysis of loadbearing steel structure of observation tower, which is located southeast of Černá Hora, township Blansko. The design is processed in two options. Parts of the thesis are engineering report, structural design report for both of the options and graphical documentation in specified range. The structure’s height is 25.3 m and maximal ground plan dimension is 6 x 6 m. Steel grade S355 was chosen as main material. The sub-objectives of the structural analysis are load effects calculations (permanent load, imposed load and climatic load), entering of loads to the calculation model and calculation of internal forces and deformations. An assessment of the supporting elements and selected joints is also included. There are dynamic design features considered in the calculation. All calculations were performed in accordance with valid ČSN EN standards.
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Aircraft de-icing systems
Fazekaš, Slavomír ; Bencalík, Karol (referee) ; Třetina, Karel (advisor)
The aim of my bachelor thesis is to make the acquaintance of the danger of ice coating on airplanes, it s creation and the way of removing. The study involves the description of particular systems designed to protect airplanes against the ice coating and their dividing into deicing and anti-icing systems. The systems are divided by the exploited energy and by the place of installing. The emphasis is centred on the efficiency and the energy intensity of these systems. A part of my study also deals with the removing of ice coating arised on ground and with the description of basic parameters, which must be fulfilled by these systems according to the flying rules.
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Dimensioning of Overhead Line Conductors According to ČSN EN 50341 and ČSN EN 50423
Dostál, Martin ; Novotný, Jan (referee) ; Orságová, Jaroslava (advisor)
Overhead line must be designed to be able to resist variety of influences. These influences are mechanical, which are caused by wind and rime during the normal conditions and electrical influences. Therefore all parts of overhead line have to be designed and built to withstand mechanical and electrical stress. This bachelor’s thesis is focused mainly on electrical parameters of overhead line, climatic stress and calculation of mechanical stress during limit states. There are described formulas and steps of calculation of line straining MV and HV and there are also described examples of calculation in detail.
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Static and dynamic assessment of an outlook tower construction
Valíček, Jan ; Kala, Jiří (referee) ; Salajka, Vlastislav (advisor)
This thesis deals with static and dynamic analysis of an lookout tower construction. For dynamic analysis a computational model in ANSYS software is created. Static analysis is performed by Scia Engineer software. Both of this software use finite element method. It is also focused on wind load determination by Eurocode 1, structural factor calculation, modal analysis and vortex shedding. Verification of selected parts according to Eurocodes is included.
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Experimental research of fluids against icing of overhead wires
Málek, Jan ; Polach, Pavel (referee) ; Galas, Radovan (advisor)
In this thesis, commercially available anti-icing fluids were tested. A methodology of assessment was designed for the effect of anti-icing fluids on the rapidity of ice growth and its development over time. These tests were conducted on a device constructed for the purpose of the thesis. The solutions were tested for their effect on the ice adhesion to a contact wire. The effect of the solutions on the tribological behaviour of the collector strip and contact wire was described. The experiments were supplemented by mensuration of the size of the contact angle of the solutions on the copper surface. However, these fluids anti-icing effect is relatively short-term. On the contrary, the thesis shows that even a small amount of anti-icing solution on the surface of the contact wire can help to significantly lower the ice adhesion.
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Preventive system against icing of overhead wires
Jaroš, David ; Omasta, Milan (referee) ; Galas, Radovan (advisor)
This bachelor thesis deals with protection of overhead lines from icing with a focus on chemical treatment. The introductory part of the work focuses on the description of the overhead line and icing. The next part presents methods of prevention against icing on overhead lines. Various anti-icing systems and fluids are described here. The last part focuses on the result of this thesis and analyses the acquired knowledge.
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Realistic Model of the Sky
Kussior, Zdeněk ; Bílek, Václav (referee) ; Drahanský, Martin (advisor)
The paper describes a theoretical base and realization of realistic volumetric clouds visualization in an environment of real-time simulator. The first part is concerned with a meteorological background of this problem. I show international classification of ten basic cloud types including a short description and cases of occurence. The following part is concerned with an interaction between cloudiness and simulation core, which is based on the fact, that each cloud acts as a mechanical or an electromagnetic obstacle. This should be considered on some way in simulation. The next part describes technologies and practical implementations of visualization and evaluates their characteristics. Finally, the last chapter describes my implementation and tries to outline project advancement.
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Is rhime a factor contributing significantly to the total atmospheric deposition?
Krištof, Tomáš ; Hůnová, Iva (advisor) ; Stráník, Vojtěch (referee)
The aim of this bachelor thesis is to try to answer the question whether the rime can have signifiant contribution to atmospheric deposition by researching avaiable literature. Atmospheric deposition is a process which transmits substances from the atmosphere to the earth's surface . One of its components is a sedimentary deposition (fog, frost , rime ) . Rime does not occur throughout the whole year , and its formation is dependent upon frequently changing factors. Yet it can be shown that the concentration of substances in rime may exceed or at least occupy a significant share of atmospheric deposition in certain locations under favorable period for its emergence. Key words: Atmospheric deposition, rime
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