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Flexible structure development for efficient heat transfer
Černoch, Jakub ; Lazar, Václav (oponent) ; Mašek, Jakub (vedoucí práce)
The master’s thesis deals with theoretical calculations and design of a structure for heat transfer, which is part of a Miniaturized Heat Switch according to the specified requirements of the European Space Agency. The basic parameters are low weight and high thermal conductivity. The work follows the switch designed by Arescosmo, which did not meet the requirements, especially in the area of weight and thermal conductivity. Using theoretical calculations of weight and thermal conductivity, 49 variants were verified in 3 basic concepts – Mechanical contact structure, flexible structure composed of wires and foil structure. In terms of thermal conductivity, the best structures are those based on the use of metal stocking and sleeving braids. Manufacturing technologies have also been proposed from available sources that could be used to produce these structures. To meet the requirements, in the next phase of the project it will be necessary to produce experimental samples on which the theoretical calculations and selected technologies will be verified.
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Elektricky vodivé povrchy pro 3D tištěné struktury
Šomšák, Martin ; Mikulášek, Tomáš (oponent) ; Láčík, Jaroslav (vedoucí práce)
This thesis describes the technical possibilities of coating various 3D printed structures by different coating methods. Different surface structures have been created on two models for two 3D printing technologies. Antennas on FR4 and PLA substrates were simulated. After adjusting the dimensions of the antennas in the simulations and the results obtained from the simulations, two patch antennas on PLA substrate were created. To form the antennas, the substrate was coated with copper foil and electrically conductive spray. The antennas were then measured and the results of gain, radiation characteristics and reflection factor were compared with simulations.
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Elektricky vodivé povrchy pro 3D tištěné struktury
Šomšák, Martin ; Mikulášek, Tomáš (oponent) ; Láčík, Jaroslav (vedoucí práce)
Tato práce popisuje technické možnosti pokovení různých 3D tištěných struktur různými metodami pokovení. Byly vytvořeny různé struktury povrchů na dvou modelech pro dvě technologie 3D tisku. Byly simulovány antény na FR4 a PLA substrátech. Po úpravách rozměrů antén v simulacích a získaných výsledků ze simulací byly vytvořeny dvě flíčkové antény na PLA substrátu. Pro vytvoření antény byl substrát pokoven měděnou fólií a elektricky vodivým sprejem. Následně byly antény změřeny a výsledky porovnány se simulacemi.
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Flexible structure development for efficient heat transfer
Černoch, Jakub ; Lazar, Václav (oponent) ; Mašek, Jakub (vedoucí práce)
The master’s thesis deals with theoretical calculations and design of a structure for heat transfer, which is part of a Miniaturized Heat Switch according to the specified requirements of the European Space Agency. The basic parameters are low weight and high thermal conductivity. The work follows the switch designed by Arescosmo, which did not meet the requirements, especially in the area of weight and thermal conductivity. Using theoretical calculations of weight and thermal conductivity, 49 variants were verified in 3 basic concepts – Mechanical contact structure, flexible structure composed of wires and foil structure. In terms of thermal conductivity, the best structures are those based on the use of metal stocking and sleeving braids. Manufacturing technologies have also been proposed from available sources that could be used to produce these structures. To meet the requirements, in the next phase of the project it will be necessary to produce experimental samples on which the theoretical calculations and selected technologies will be verified.
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