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Conceptual design of a hydrogen powered ultralight aircraft
Vrana, Andrej ; Zikmund, Pavel (referee) ; Koštial, Rostislav (advisor)
This master’s thesis deals with the conceptual design of a small ultralight aircraft, that uses hydrogen as its main fuel source. The thesis describes the main problem of hydrogen utilization in the aviation industry and provides the reader with an overview of existing aircraft with this power source. The design consists of a selection of suitable powerplant components, which was made after extensive research, and of the aircraft geometry design itself. The basis of the whole powerplant is a fuel cell, which produces electric energy from hydrogen, that drives a propeller via an electric motor. The aircraft geometry design was made according to CS-LSA regulations and is largely based on statistical values of dimensions of aircraft from the same category. The conceptual design is provided with a weight and balance analysis, a flight envelope according to regulation and an analysis of basic flight performance. In the end, a conclusion was made about the feasibility of operation of such an aircraft and about the compliance with regulation.
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Adjusting mechanism of a small rocket engine for space exploration vehicles
Vrana, Andrej ; Popela, Robert (referee) ; Bartoněk, Jaroslav (advisor)
This bachelor’s thesis deals with designing adjustable gimbal mechanisms used for steering a small rocket engine and their depiction in 3D CAD models. The thesis is divided into two main parts. In the first part, spacecraft used for exploration of celestial bodies are described. All the spacecraft are described in detail, showing their mission phase, their design and technical parameters together with informations about their scientific discoveries, which they provided. The second part describes how rocket engines work with their division into main types and gives examples of rocket engines used in the aerospace industry. Furthermore, means of steering a rocket during flight are described, with also showing various ways of dealing with this issue. Finally, designs of of adjustable gimbal mechanisms are presented, with description of their usability.
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Adjusting mechanism of a small rocket engine for space exploration vehicles
Vrana, Andrej ; Popela, Robert (referee) ; Bartoněk, Jaroslav (advisor)
This bachelor’s thesis deals with designing adjustable gimbal mechanisms used for steering a small rocket engine and their depiction in 3D CAD models. The thesis is divided into two main parts. In the first part, spacecraft used for exploration of celestial bodies are described. All the spacecraft are described in detail, showing their mission phase, their design and technical parameters together with informations about their scientific discoveries, which they provided. The second part describes how rocket engines work with their division into main types and gives examples of rocket engines used in the aerospace industry. Furthermore, means of steering a rocket during flight are described, with also showing various ways of dealing with this issue. Finally, designs of of adjustable gimbal mechanisms are presented, with description of their usability.
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