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The electronic equipment of combat aircraft of 4th and 5th generation
Hron, Kvido ; Koštial, Rostislav (referee) ; Dubnický, Lukáš (advisor)
Modern aerial combat requires sophisticated electronic equipment to enhance the combat capabilities of fighter jets. This work focuses on the electronic equipment of fighter jets, emphasizing their advanced technological capabilities and operational significance. The study examines the development of electronic warfare systems, radar technologies, communication setups, and self-protection measures across different generations of fighter jets. The paper highlights the crucial role of electronic equipment in improving pilot situational awareness, survivability, and mission effectiveness in modern aerial combat scenarios. Additionally, the work explores the integration of advanced sensors, processors, and artificial intelligence algorithms in fourth- and fifth-generation fighter jets, elucidating their impact on mission success and operational superiority. By providing insights into the electronic equipment and capabilities of these advanced aerial platforms, this study contributes to a deeper understanding of the evolving aerial combat environment in the 21st century.
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Evaluation of alternative propulsion types for aviation applications
Franz, Jan ; Horpatzká, Michaela (referee) ; Koštial, Rostislav (advisor)
This bachelor’s thesis attempts to summarize different types of aircraft propulsion with special regard to alternative types of propulsion and their comparison to conventional types. The text is consists of an overview of conventional propulsion and fuels used with extension to sustainable aviation fuels. Electric propulsion including motors, batteries and fuel cells. Examples of aircraft that use alternative propulsion. Hybrid propulsion and hydrogen storage and a calculation for a reference aircraft.
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Development and present state of Fly-By-Wire systems in aircraft controls
Cuber, Dominik ; Koštial, Rostislav (referee) ; Dubnický, Lukáš (advisor)
This bachelor thesis deals with a research on the development and state of art of Fly-By-Wire (FBW) flight control systems. In the first part, control surfaces and an overview of aircraft control systems are described. The main part addresses the Fly-By-Wire system in which the principle, control laws, advantages and basic elements of this system are described. This is followed by a depiction of the development of FBW systems, and the final section compares the Airbus and Boeing approaches to Fly-By-Wire. Overall, the thesis attempts to provide an overview of FBW systems, their development and their use in modern aviation.
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Electro mechanical actuator design
Hlavnička, Matyáš ; Koštial, Rostislav (referee) ; Juračka, Jaroslav (advisor)
This bachelor thesis focuses on the structural design of an electromechanical actuator with redundancy of motion screws based on the required parameters using available components on the market. The actuator components were selected to be able to transmit static loads of 2 kN and dynamic loads of up to 400 N. The sub-objectives were to describe the types of hydraulic and electric aircraft actuators in the context of more electric aircraft.
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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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Analysis of ultralight aircraft accidents
Belák, Richard ; Koštial, Rostislav (referee) ; Procházková, Hana (advisor)
This thesis deals with the analysis of accidents of ultralight aircraft that entered the reversed command flight mode and subsequently crashed. Unfortunately, most of the accidents ended fatally, and so this thesis is designed so that at the end of it the reader will have an understanding of what mistakes pilots have made and how to avoid them. The thesis explains the origins of the reversed command and discusses in detail the accidents it caused. The most at-risk group appears to be pilots who are in the 61–72 age range and have flown up to 600 flight hours. In some cases, these pilots had a break of several months before the flight and their aircraft was often not in serviceable condition. A frequent mistake was the effort to choose the so-called "impossible turn" and in some cases pilot indiscipline played a role.
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Simulation of ultrasonic wave in the composite aircraft structures
Cimrhanzl, Jan ; Koštial, Rostislav (referee) ; Šplíchal, Jan (advisor)
V této diplomové práci jsou popsané SHM metody používané v letectví a dále jsou udělány MKP simulace šíření ultrazvoukových vln v celokompozitním tenkostěnném materiálu používaném u leteckých konstrukcí. Pro simulaci byla zvolena SHM metoda nazývaná pitch-catch. Simulace byla provedena na dvou různých kompozitových materiálech a každý z nich byl testován třemí různými konfiguracemi s trhlinou a jednou konfigurací bez trhliny. Jako prepocessor byl použit MSC.Patran a jako post processory byli použity MSC.Nastran a MSC.Dytran, jejichž výsledky byli na závěr porovnány. Simulace prokázali, že rychlost šíření a amplituda vln šířících se v simulovaném panelu je trhlinami ovlivněna. Při konfiguracích s trhlinami rychlost šíření i amplituda vln byli menší, než v případě bez trhliny. Jako vhodnější post processor při MKP simulacích se ukázal MSC.Nastran, jehož výsledky byli přesnější a zárověň bylo i snažší správně odečítat hodnoty dat z grafů pro podrobnější pozorování šíření vln.
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Methodology of temperature measurement behind jet engine
Koutný, Martin ; Koštial, Rostislav (referee) ; Matějů, Jiří (advisor)
This thesis is focused on temperature measurement behind jet engine. The theoretical part introduces chosen ways of temperature measurement. The practical part is divided into design (and later assembly) of the measuring stand, methodology of measurement and the measurement itself. The main outcome are heat maps gained by measuring temperatures behind TJ – 42 jet engine.
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