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Retractible landing gear design for Z 143 LSi airplane
Gregor, Jiří ; Vaněk, František (referee) ; Píštěk, Antonín (advisor)
The diploma thesis deals with the design of the replacement the Z 143 LSi landing gear with the new VUT 100 type landing gear in a retractable system. The first part of this thesis is devoted to the description of the Z 143 LSi aircraft and its landing gear and the description of the retractable landing gear type VUT 100. The next part describes the possible variants of the installation the VUT 100 landing gear, which are critically evaluated. Then there is selected the final variant for the installation, which is designed in Catia V5 software. The final design includes remotorization with Lycoming IO-390 and new design of engine bed. For the proposed solution, a new mass analysis with the calculation of centrations, new cases of ground load, a new flight envelope of load and additional cases of load of a new engine bed are prepared. The proposed engine bed is analyzed by the finite element calculation method in the MS Patran software. Finally, a possible scheme of the chassis retraction system is proposed.
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Mechanical-biological waste treatment techniques
Wildová, Kristýna ; Gregor, Jiří (referee) ; Kropáč, Jiří (advisor)
This bachelor’s thesis focuses on description of various possibilities of municipal waste treatment in czech waste management system, focusing on potential realisation of mechanical-biological treatment of waste (MBT) in our area. Data analysis of foreign MBT units is included in the thesis, based on this analysis three different model layouts of technology were specified. The findings from foreign MBT units are then being used to creation and setting of a calculation tool, which is the main result of this thesis. The tool is based on residual waste composition and production data and it is able to estimate attainable production and presumptive parameters of MBT technology products.
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Effective management of biological waste
Petříčková, Alena ; Ferdan, Tomáš (referee) ; Gregor, Jiří (advisor)
Theoretical part of present study gives a comprehensive overview of the methods used for the disposal of biodegradable waste with emphasis placed on highly effective techniques. Composting process is studied in detail and machinery used is thoroughly described. Acquired information from extensive research was applied to create a model of composting plant. Operation manual for this specific model forms part of the study. Afterwards various decomposing scenarios are analyzed and their economic sustainability is evaluated.
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Operational efficiency of photovoltaic generators
Koval, Filip ; Václav, Březina (referee) ; Gregor, Jan (advisor)
Objective of master’s thesis theoretical part is especially to illustrate influence of operation conditions, such as solar radiation, temperature or pollution of photovoltaic generator active area, on load and power characteristics of photovoltaic generator, or more precisely on photovoltaic conversion efficiency. Possible variants of increasing effectivity of using photovoltaic generator are explored, such as solar radiation concentration, photovoltaic generator active area cooling or aplication of optimalization circuit. Pivotal part of master‘s thesis is focused on experimental device practical realisation, concretely type MSQ36-10 photovoltaic generator with oriented concentrators of solar radiation. Practical realisation includes design of master‘s thesis experimental part construction with subsequent design of photovoltaic generator motion cycle necessary for adequate simulation of configuration variants solved using single testing photovoltaic generator. Description of own experimental device construction with list of measuring places used in task takes up. It is used automatic monitoring system working as independent measurement task for required values measuring and consecutive data collecting. It is done in two phases. First phase is measurement of all required values, in second phase measurement with attached optimalization circuit is made. Optimalization circuit sets best working point of photovoltaic generator according to actual working conditions. Master‘s thesis intention is experimental verification of solar radiation concentrators application convenience, orientation of photovoltaic generator or its mutual combination, namely using type MSQ36-10 photovoltaic generator. Objective is evaluation of reached energetic gain for all experimental device layouts in variable operating conditions.
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Recoverability of municipal waste plastics
Jedličková, Kateřina ; Gregor, Jiří (referee) ; Kropáč, Jiří (advisor)
The main aim of this bachelor thesis is identification of running costs and economical claims connected with production of secondary raw materials from separated plastic waste. It also includes a comparison between treatment of separated plastic waste and treatment of plastics that occur together with residual mixed municipal solid waste.
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Study of the intersection in the village of Javornice
Gregor, Jan ; Janda, Michal (referee) ; Kosňovský, Michal (advisor)
The bachelor's thesis deals with the modification of the intersection in the village of Javornice, located in the district of Rychnov nad Kněžnou. In total, three treatment variants are proposed at the same level of processing. The reason for the induced modification is the current opacity of the intersection. Another reason is to meet the requirements of the municipality for the construction of bus stops at the primary school Javornice, modification of the adjacent parking lot and protection of the slopes of a nearby stream against erosion.
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Trends in geographical information systems applications in waste management
Polášek, Marek ; Gregor, Jiří (referee) ; Pavlas, Martin (advisor)
The objective of this bachelor thesis is explanation of geographical information system issue and their application in waste management. The first part introduces the concepts of geographical information system and waste management, second part deals with usual GIS applications in waste management including the perspective trends, third part contains the overview of existing GIS software solutions and platforms including the mobile apps. Fourth part presents the specific design of GIS system for waste management.
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Optimalize Application of Cascade Convection of a Heat Pumps
Hrnčíř, Zdeněk ; Šenk, Josef (referee) ; Gregor, Jan (advisor)
The introductory part of this diploma work contains a basic thought for the application of the heat pumps cascade connection and further I describe its function and define the notion of an optimum middle temperature.Then the direct comparison of two heats pumps cascade connection with an one-stage heat pump is shown there in a concrete example. The main part of the work is aimed to the determination of the most suitable variant for the heating and for the preparation of a hot service water in a benchmark family house. The systems of heatings are provided in options of a low-temperature floor heating and hot-water radiators. Both types of the heat pumps supply the warm to every heating system. It results into four possibles alternatives of the building heating.Besides of the alternatives mentioned above, a new variant of optimalised cascade connection was arisen during this work elaboration . The first stage of this connection which supplies the warm to the floor heating is disconnected out of the heating season and the second stage provides only a hot service water warming. The results of this work showed us that just this variant of a cascade connection causes savings in energy in comparison with an one-stage heat pump. In the conclusion of this work there are discussed the reached results and indicated the possibilities of a practical exploitation.
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The ocean cleaning technology concepts
Jedličková, Kateřina ; Kropáč, Jiří (referee) ; Gregor, Jiří (advisor)
The main aim of this master's thesis is the world ocean pollution by plastic waste. The introductory part of the thesis contains general information about the production of plastics and plastic waste, followed by data on ocean pollution by plastic waste including the estimated amount, pollution sources, and composition. Part of the thesis consists of the introduction of known concepts that are already actively looking for a solution to marine waste and of their mutual comparison. The following part deals with the plastic waste management, the possibilities of its treatment and utilization. The last area is the draft of an alternative system that is focused on an effective solution in accordance with environmental aspects. Within this draft, a material and economic balance is made.
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Effective management of plastic waste
Kostková, Kateřina ; Pavlas, Martin (referee) ; Gregor, Jiří (advisor)
The main content of the submitted diploma thesis is the implementation of analysis of separated plastic waste and examination of the issue of extrusion tests. The practical knowledge is preceded by a search of waste management in the Czech Republic and get acquainted with the issue of polymer materials. The research is about plastic waste management and preparation of polymeric materials for extrusion tests. Theoretical knowledge is then applied in the practical implementation of extrusion tests.
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