|
| |
|
|
Influence of space debris on satellites design
Hláčik, Adam ; Lazar, Václav (oponent) ; Bartoněk, Jaroslav (vedoucí práce)
The bachelor thesis summarizes the space debris problem and its impacts on the uncrewed spacecraft design. The primary goal is to combine theoretical understandings of the space debris topic with the practical implementation of these findings in the "design for debris" strategy. The first chapter of the thesis examines the properties of space. debris. Findings from this chapter must be considered during the mission and spacecraft design phase, alongside other design driving attributes. The practical part demonstrates the "design for debris" approach in a model case study. The design approach is based on the Micro Meteriod and Orbital Debris analysis findings, which characterize the interaction of debris particles with spacecraft during the course of a mission. Alongside characterization of debris population on mission orbit, analysis can detect weak spots of spacecraft design that are vulnerable to debris impact. Risk-reducing modifications based on analysis data and problem understanding can be applied to reduce the possibility of a spacecraft failure. Another analysis iteration can verify the effectiveness of proposed modifications.
|
|
|
Influence of space debris on satellites design
Hláčik, Adam ; Lazar, Václav (oponent) ; Bartoněk, Jaroslav (vedoucí práce)
The bachelor thesis summarizes the space debris problem and its impacts on the uncrewed spacecraft design. The primary goal is to combine theoretical understandings of the space debris topic with the practical implementation of these findings in the "design for debris" strategy. The first chapter of the thesis examines the properties of space. debris. Findings from this chapter must be considered during the mission and spacecraft design phase, alongside other design driving attributes. The practical part demonstrates the "design for debris" approach in a model case study. The design approach is based on the Micro Meteriod and Orbital Debris analysis findings, which characterize the interaction of debris particles with spacecraft during the course of a mission. Alongside characterization of debris population on mission orbit, analysis can detect weak spots of spacecraft design that are vulnerable to debris impact. Risk-reducing modifications based on analysis data and problem understanding can be applied to reduce the possibility of a spacecraft failure. Another analysis iteration can verify the effectiveness of proposed modifications.
|
|
| |
|
|
Pologrupy operátorů a jejich orbity
Vršovský, Jan ; Müller, Vladimír (vedoucí práce) ; Kalenda, Ondřej (oponent) ; Fašangová, Eva (oponent)
Název práce: Pologrupy operátoru a jejich orbity Autor: Jan Vršovský Katedra / Ústav: Matematický ústav AV ČR Vedoucí disertační práce: prof. RNDr. Vladimír Müller, DrSc., Matematický ústav AV ČR Abstrakt: Orbita spojitého lineárního operátoru T na Banachově prostoru je posloupnost T n x, n = 0, 1, 2, . . ., kde x je pevný vektor. Orbity úzce souvisejí především s dynamikou semigrup operátoru a s invariantními podprostory a podmnožinami. Práce studuje vztah operátoru a jeho orbit. Předmětem první části je vztah posloupností T n x a T n , stabilita a orbity v normě ros- toucí do nekonečna. Druhá část se zabývá hustými orbitami - hypercyklicitou a příbuznými pojmy. Ve třetí části jsou definovány a studovány orbit-reflexivní operátory, jako analogie reflexivních algeber operátoru. Kromě běžných orbit jsou také zmíněny slabé orbity a orbity C0-semigrup. Klíčová slova: operátor, semigrupa, orbita, hypercyklický, orbit-reflexivní
|
host ::
RSS.