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Wing High Lift Devices
Rakovský, Kristián ; Weis, Martin (referee) ; Horák, Marek (advisor)
This bachelor’s thesis deals with wing high lift devices. Thesis states the purpose of high lift devices, their division, a brief overview of their history and a detailed description of particular devices with mentioning their advantages, disadvantages and usage in aviation. A part of the thesis also contains a short statistic, which compares wing high lift devices of high capacity transport aircraft.
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Influence of the Francis turbine stay vane trailing edge shape on generation of Karman vortex street
Novotný, Vojtěch ; Skoták, Aleš (referee) ; Rudolf, Pavel (advisor)
In the flow past bluff bodies for a certain range of velocity a periodical vortex shedding emerges which is known as von Kármán vortex street. This phenomenon causes the periodical alteration of pressure field which affects the body. Should the vortex shedding frequency be similar to the body natural frequency, the amplitude of vibration significantly increases which can lead to fatigue cracking. In the case of water turbines, this phenomenon often affects the stay vanes. Both the vortex shedding frequency and the lift force amplitude can be influenced by the modification of the trailing edge geometry. The aim of this thesis is to use CFD computation in order to find the optimal geometry of the stay vane trailing edge for the specific Francis turbine unit.
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High-lift system of the competition model aircraft
Vrba, Martin ; Koštial, Rostislav (referee) ; Koutník, Tomáš (advisor)
This Bachelor thesis is focused on compiling a summary of lift mechanization, at both the leading and the trailing edges used on plane models and unmanned means of transport. It briefly explains their principles and functions. It describes the method of calculation of the flight mode design of the competing aircraft according to the specifications of the Air Cargo Challenge competition.
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High-lift system of the competition model aircraft
Vrba, Martin ; Koštial, Rostislav (referee) ; Koutník, Tomáš (advisor)
This Bachelor thesis is focused on compiling a summary of lift mechanization, at both the leading and the trailing edges used on plane models and unmanned means of transport. It briefly explains their principles and functions. It describes the method of calculation of the flight mode design of the competing aircraft according to the specifications of the Air Cargo Challenge competition.
|
|
|
Influence of the Francis turbine stay vane trailing edge shape on generation of Karman vortex street
Novotný, Vojtěch ; Skoták, Aleš (referee) ; Rudolf, Pavel (advisor)
In the flow past bluff bodies for a certain range of velocity a periodical vortex shedding emerges which is known as von Kármán vortex street. This phenomenon causes the periodical alteration of pressure field which affects the body. Should the vortex shedding frequency be similar to the body natural frequency, the amplitude of vibration significantly increases which can lead to fatigue cracking. In the case of water turbines, this phenomenon often affects the stay vanes. Both the vortex shedding frequency and the lift force amplitude can be influenced by the modification of the trailing edge geometry. The aim of this thesis is to use CFD computation in order to find the optimal geometry of the stay vane trailing edge for the specific Francis turbine unit.
|
|
| |
|
|
Wing High Lift Devices
Rakovský, Kristián ; Weis, Martin (referee) ; Horák, Marek (advisor)
This bachelor’s thesis deals with wing high lift devices. Thesis states the purpose of high lift devices, their division, a brief overview of their history and a detailed description of particular devices with mentioning their advantages, disadvantages and usage in aviation. A part of the thesis also contains a short statistic, which compares wing high lift devices of high capacity transport aircraft.
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