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Analysis of critical parameters of the batteries for space applications
Šimek, Michal ; Šedina, Martin (referee) ; Kazda, Tomáš (advisor)
This thesis deals with the use of lithium-ion batteries for space applications. Primary and secondary electrochemical sources and their comparison are described in the paper. The main part of this work deals with lithium-ion batteries, their history, properties and used materials, deals with the use of li-ion batteries for space applications in terms of temperature and describes the effects of temperatures on li-ion batteries. At the last chapter deals with a lithium plating and his detection. In the practical part, a methodology for the detection of cast plating is proposed, which I then test on a number of cells, which I measure at various practical workloads.
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The first people in space according to Czechoslovak media
Panák, Břetislav ; Štaif, Jiří (advisor) ; Lomíček, Jan (referee)
This thesis focused on how propaganda was used in the Czechoslovak media and how that directly relatedd to the first people in space. The aim is an analysis of celebrities of Soviet state system including Yuri Gagarin, Valentina Tereshkova and also John Glenn for comparison. The thesis discusses how these people were promoted and constructed into cult heroes in Eastern, Western and Third World countries. The secondary literature of this subject was not yet analysed and the author wants to use it for further study. The contemporary sources are used in the press - Rude pravo, Mlady svet, Dikobraz, ABC mladych prirodovedcu a techniku and the Ceskoslovensky vojak.
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The creation of the image of the race to the Moon in Wings of the Motherland and Aviation+Cosmonautics between 1961 and 1972
Čermák, Ondřej ; Cihlářová, Gabriela (advisor) ; Jirků, Jan (referee)
Bachelor thesis "The Creation of the Image of the Race to the Moon in Wings of the Motherland and Aviation + Cosmonautics between 1961 and 1972" deals with the development of the Moonrace between United States of America and their rival Soviet Union as it is described on the pages of the above-mentioned periodicals. These periodicals mostly contain topics that can be characterized as popular scientific or even purely scientific. In their early years they were generally oriented upon aviation and parachuting. During the 1960s as the public interest for space was growing the periodicals adopted astronautics into its range of topics as well. This paper tries to reveal if the mediation of the Moonrace topic somehow twisted its general image for the sake of USA or Soviet Union. At the same level it aims to tell what were the reasons behind and how much space did the Moonrace and its development occupy on the pages of these periodicals. This paper methodically analyzes the contents of each periodical that is tied to the topic of Moonrace. Afterwards it carries out comparisons and generalizations based on the results of the previous analysis. Equally there is performed a quantitative content analysis of the articles on astronautic and space in general to get objective data. The analysis is based on the...
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Actors' behaviour and the militarization of space: Cooperation vs. conflict
Gréková, Lenka ; Doboš, Bohumil (advisor) ; Střítecký, Vít (referee)
The thesis deals with the question of militarization and weaponization of the outer space and it analyse the actor's behaviour regarding space militarization and weaponization. The aim of the thesis is to find out whether the key actors cooperate or not in dealing with the use of the outer space. The relations between the key actors are analysed from the perspective of the game theory, particularly with the two models of behaviour: prisoner's dilemma and the tragedy of the commons. These models are used based on the assumption that they best describe the relations between actors in international relations as either cooperative or competitive. The aim is to evaluate whether these two models are valid in researching the behaviour of the key actors in the question of militarization of space. The analysed actors are the United States, Russia and China, as these are the three most important and successful space-faring nations with the biggest potential in the future of space exploration. Analysing their relations, the thesis attempts to evaluate whether the two models of the game theory are valid or not. For evaluating the prisoner's dilemma, bilateral relations are analysed, for the tragedy of the commons, their multilateral relations are analysed. What we learn from the analysis is that both models...
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Insects as human food
Augustinová, Šárka ; Frouz, Jan (advisor) ; Pivnička, Karel (referee)
Insects as a traditional source of food widespread in tropical and subtropical regions offer significant nutritional, economical and ecological gains not only to rural communities. Western bias against insects led to gradual reduction of usage of insects as food without any compensation for lost sources of nutrition and other benefits. Current efforts of the Western world to prevent starvation of population and undo the consequences of inconsiderate human interventions into the environment are often futile and ineffective. One of possible answers to these global problems could be reestablishment of insects as a food source for the native population. Insects offer a renewable source of protein with nutritional values as high as 3186kJ per 100g of solids which exceeds the values of most species traditionally cultivated. The protein content varies throughout the various insect species from 30% in wood-worms to 81% in wasps of the genus Polybia. Moreover, the quality of these proteins is very high and the high values of the amino acids contained outperform the FAO recommended designs. Many species contain important minerals such as calcium, sulfur, iron, phosphor, magnesium and zinc and are as well rich in B vitamins, niacin, riboflavin and thiamin, which are often not incorporated enough into standard meal...
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Nutrition of astronauts
Žabová, Anna ; Vilikus, Zdeněk (advisor) ; Petráková Doležalová, Radka (referee)
This non-experimental diploma thesis is focused on nutrition in space and all aspects associated with it. The first part deals with human physiology in microgravity. These are changes affecting the musculoskeletal, cardiovascular, digestive, immune and central nervous systems, but also the consequences of long-term isolation, confined space and cosmic radiation in terms of the nutritional profile of space mission participants. The second part describes the spacefood system and maps the Soviet (later Russian) and American past, present and future in terms of the development of space nutrition and food. The third part focuses on the functioning of space medicine and dietetics, together with interesting projects and programs that have helped or continue to help improve space food systems. Thanks to these programs, the future settlement of the universe will become more realistic. keywords: nutrition, nutrition in space, spacefood, cosmonaut, astronaut, space
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Bearings for space
Vavřík, Petr ; Nečas, David (referee) ; Košťál, David (advisor)
Currently, space satellites in orbit are required to operate reliably for more than 10 years. This places high demands on the satellite's tribological systems, which must function properly in the hostile space environment for this period. This bachelor thesis deals with the description of suitable bearings and their lubrication for space applications. Lubrication regimes are described at the outset. Then, space factors affecting the proper operation of tribological systems are summarized. The largest part is devoted to the description of the most used bearings and lubricants. The thesis concludes with the design of suitable bearings and their lubrication for the satellite reaction wheel.
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Užitečnost vesmírné tématiky na produktech u generace mileniálů
Cinciala, Tomáš
Cinciala, T. Utility of space theme on products for generation of Millennials. Diploma thesis. Brno: Mendel university in Brno, 2018 Main purpose of diploma thesis is utility determination of space theme on products. It focuses on generation of Millenials which is important factor in consumer behaviour. Main part of thesis is an eye tracking study which examines correlation between attention and purchase intention. For better interpretation of results is used depth interviews with respondents. An abstract is in (British) English.
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Conceptual design of a heat switch installation into a structure of satellite
Vrba, Martin ; Horák, Marek (referee) ; Mašek, Jakub (advisor)
Tato diplomová práce je zaměřena na sestavení přehledu konstrukcí a teplených cest kosmických lodí a kosmických vozidel, které se v současné době používají. Na základě specifických požadavků a standardů jsou vypracovány koncepční návrhy zástavby tepelného spínače do konstrukce družice. V jednotlivých kapitolách jsou popsány určité členy, které se na vedení tepla podílí a jsou důležité pro navrhované koncepty z pohledu konstrukce. Diplomová práce popisuje postupy výpočtu tepelných vodivostí a rozložení působící tíhové síly do míst uchycení pro jednotlivé koncepty. Na závěr provádí hodnocení a výběr potenciálně nejvhodnějšího návrhu.
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Flexible structure development for efficient heat transfer
Černoch, Jakub ; Lazar, Václav (referee) ; Mašek, Jakub (advisor)
Diplomová práce se zabývá teoretickými výpočty a návrhem struktury pro přenos tepla, která je součástí Miniaturizovaného tepelného spínače podle zadaných požadavků Evropské Kosmické Agentury. Základními parametry jsou nízká hmotnost a vysoká tepelná vodivost. Práce navazuje na spínač navržený firmou Arescosmo, který nesplňoval požadované limity zejména v oblasti hmotnosti a tepelné vodivosti. Pomocí teoretických výpočtů hmotnosti a tepelné vodivosti bylo ověřeno 49 variant ve třech základních konceptech – Mechanická struktura, flexibilní struktura složená z drátků a foliová struktura. Z hlediska tepelné vodivosti jako nejlepší struktury vycházejí ty, které jsou založené na použití ochranných kovových opletů. Z dostupných zdrojů byly rovněž navrženy technologie, které by bylo možné využít pro výrobu těchto struktur. Pro splnění požadavků, bude v další fázi projektu nutné vyrobit experimentální vzorky na kterých budou teoretické výpočty a vybrané technologie ověřeny.
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