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Trends in aviation jet engines development
Fiala, Luboš ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
The aim of the bachelor work is to summarize recent developments in aviation jet engines. This development is oriented to reduce fuel consumption and improve thermal and propulsive efficiency. Principles described in this work are based primarily on development programs ACARE, Vision 2020 and VITAL. Projects are under development and some are already at the stage of flight tests.
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Low NOx emission combustion chamber of turbine engines
Šafránek, Martin ; Mašek, Jakub (referee) ; Šplíchal, Miroslav (advisor)
Bachelor thesis examines Low NOx emission combustion chamber of turbine engines. It describes in particular the events taking place in the combustion chambers and the mechanisms of generating all monitored emissions. It also focuses on the description of the most important design parameters, their estimated development, assessment and use in civil aviation. Further, this thesis deals with the legislation of various organizations that create certification standards for regulating the amount of emissions emitted.
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Maintenance of jet engines
Drápal, Stanislav ; Koštial, Rostislav (referee) ; Šplíchal, Miroslav (advisor)
This bachelor thesis relates to the problematic of jet engine maintenance. In the first part the reader is introduced to the historic context and functionality of the jet engine as well as to the various types of this engine. The second part relates to the problematic of maintenance, shows and compares different concepts and shows modern trends in this field. The last part is based on my visit in Letecké opravny Malešice, and shows practical methods used during overhauls of jet engines.
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Immediate diagnostics of aircraft jet engines
Valuch, Tomáš ; Molčan, Anton (referee) ; Šplíchal, Miroslav (advisor)
In this diploma thesis is elaborated design of diagnostic system for small jet engines. The aim is to describe the types of possible failures of jet engines, to determine important parameters characterizing the immediate state of engine and define methods for measurement of selected parameters. The first part is devoted to a description of selected types of small turbojet engines, followed by a summary of the most widely used diagnostic methods for assessing the health condition of the engine during operation. The next chapter contains calculation of the engine thermal cycle with characteristics of construction components. Then there is analysis of small jet engine failures with a description of their causes and possibilities of identification by diagnostic system. Thesis continues with a description of measurement methods and selection of the required sensors. Next chapter is focused on the proposed diagnostic system for condition monitoring of the engine. The last part is devoted to an excursion in laboratory for jet engine testing at the Technical University in Košice.
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Design of turbine engine inlet in NACA-duct configuration
Babinec, Viktor ; Navrátil, Jan (referee) ; Doupník, Petr (advisor)
This master thesis is focused on design and aerodynamic analysis of subsonic turbine engine inlet in NACA duct configuration for unmanned aircraft. The first part of this paper is methodics for design considerations for NACA duct, which is based on theoretical analysis of this type of inlet. The acquired knowledge is used to design an inlet for the specified unmanned aircraft that is subject of CFD analysis. The impact of deflectors is considered in the evaluation and the solution is compared to the S-duct inlet. The proposed inlet with deflectors meets DC60 distortion criterion for all specified cases and the pressure losses requirements are met for lower velocities. Based on the results, the recommended application is for aircraft that flies in optimal design conditions for most of the mission.
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Propelling nozzles of turbofan engines
Milko, Michal ; Janhuba, Luboš (referee) ; Šplíchal, Miroslav (advisor)
The thesis describes the work principle of propelling nozzles of two-stream engine in terms of thermodynamics and also describes common design solutions which are used at most types of turbofan engines. Thesis also describes the advantages and disadvantages of each adjustments and trends in development of propelling nozzles.
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The history of civil aviation 1950-1970
Bednář, Ondřej ; Kaddour, Mirvat (referee) ; Chlebek, Jiří (advisor)
This bachelor's thesis creates an overwiev of the history od civil aviation from 1950 to 1970. After World War II civilian transport aircraft was not common. At the end of the above two decades has become an essential part of traveling on long distance. Attention is given to important events in the history of aviation from transitiv from turboprop to turbofan engine. The highlight of this period was the construction of transport aircraft capable of overcoming supersonic speed.This thesis describes the development of helicopter construction. Attention is also given to the large construction offices in Europe, Asia and North America. Part of the work dealth with a development of aviation in Czechoslovakia.
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Testing of Aircraft Jet Engines
Trusík, Vojtěch ; Klement, Josef (referee) ; Šplíchal, Miroslav (advisor)
This bachelor final project is composed from two main parts. The first part is focused on describing of aviation agencies, function of jet engine, testing bed and desribing of testing of jet engines. The second part devote to application of CS-E prescription on the jet engine TJ-100 C.
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Aircraft jet engines with adaptive cycle
Heczko, Nikodem ; Šplíchal, Miroslav (referee) ; Klement, Josef (advisor)
In this final bachelor thesis is a basic overview and distribution of gas turbine engines, including a brief description of their function. The work is focused on jet engines with adaptive cycle. It introduces benefits of their use as aviation fuel units in terms of efficiency and description of possible ways to design solutions. Secondly, it analyzes the very principle of adaptive cycle and its implementation on the engine YF120. In conclusion are presented research programs dealing with adaptive cycle.
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