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Study of crack retarders geometry modification effect on integral structural panel stability with the use of Finite Element method
Moštěk, Daniel ; Augustin, Petr (referee) ; Katrňák, Tomáš (advisor)
The master’s thesis concerns itself with evaluating the impact of four dimensional parameters of a specific type of crack retarder on improving the compressional buckling strength of an integral wing panel, using the finite element method. The improvements in buckling strength were particularly assessed with concerns to the added mass of the crack retarders. The crack retarders are composed of a so-called terminal section and so-called side branches. The thesis includes a literature review on the buckling of skin-stringer panels and an overview of crack retarder types. In the practical part of the thesis created FEM models of the examined variants are described along with the achieved results, which are subsequently evaluated. It was concluded that the examined parameters related to the terminal section significantly influence the increase of buckling strength of a given variant and are efficient concerning added mass. On the other hand, the examined parameters related to the side branches were deemed less significant and their alteration was inefficient in terms of added mass.
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Rejected aircraft prototypes
Moštěk, Daniel ; Bartoněk, Jaroslav (referee) ; Dubnický, Lukáš (advisor)
The bachelor thesis focuses on seven rejected prototype aircraft that took part in tendering processes in Western Bloc countries during the Cold War. The development history of each of these aircraft is summarized, their technical properties are specified, the reason of their rejection is explored, and a comparison is made between them and the preferred aircraft. An assessment of gathered information is then made resulting in the conclusion that studying these rejected prototype aircraft can lead to valuable insights.
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Rejected aircraft prototypes
Moštěk, Daniel ; Bartoněk, Jaroslav (referee) ; Dubnický, Lukáš (advisor)
The bachelor thesis focuses on seven rejected prototype aircraft that took part in tendering processes in Western Bloc countries during the Cold War. The development history of each of these aircraft is summarized, their technical properties are specified, the reason of their rejection is explored, and a comparison is made between them and the preferred aircraft. An assessment of gathered information is then made resulting in the conclusion that studying these rejected prototype aircraft can lead to valuable insights.
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