Author of thesis: Ing. Jakub Černoch
Acad. year: 2019/2020
Supervisor: Ing. Jakub Mašek, Ph.D.
Reviewer: Ing. Václav Lazar, Ph.D.
Abstract: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.
Miniaturized heat switch, Thermal conductivity, Space, ESA, copper shielding braids, aluminium shielding braids, aluminium foil, copper foil, carbon materials, graphene, copper textile braid
Date of defence
20.07.2020
Result of the defence
Defended (thesis was successfully defended)
Grading
A
Process of defence
Student vysvětlil pojem "cold welding" z otázky oponenta a poznamental možné způsoby předcházení tomuto jevu. Student vysvětlil možnosti zvýšení kontaktní vodivosti pomocí dodatečného materiálu v kontakční ploše, teplovodivé pasty a povlakování. Otázka: Uvažoval jste ochranu před vlivy radiace v kosmu? Odpověď: Byly použity materiály schválené (odzkoušené) pro použití v kosmu. Otázka ohledně technologičnosti předložených návrhů. Odpověď: Uvažováno bylo elektronové svařování konzultované na Akademii věd. Otázka ohledně přínosu tématu DP. Odpověď: Cílem bylo dosažení nízké hmotnosti a řešení nízké tepelné vodivosti.
Language of thesis
English
Faculty
Department
Study programme
Mechanical Engineering (M2I-P)
Field of study
Aircraft Design (M-STL)
Composition of Committee
doc. Ing. Jiří Hlinka, Ph.D. (předseda)
doc. Ing. Ivo Jebáček, Ph.D. (místopředseda)
doc. Ing. Josef Klement, CSc. (člen)
doc. Ing. Vladimír Daněk, CSc. (člen)
doc. Ing. Ladislav Janíček, Ph.D., MBA, LL.M. (člen)
Supervisor’s report
Ing. Jakub Mašek, Ph.D.
Grade proposed by supervisor: A
Reviewer’s report
Ing. Václav Lazar, Ph.D.
Grade proposed by reviewer: A