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ALTERNATIVE PROPULSION FOR AIRCRAFT OF GENERAL AVIATION CATEGORY
Kaddour, Mirvat ; Hlinka, Jiří (referee) ; Rousek, Miroslav (referee) ; Třetina, Karel (advisor)
Letecká doprava jako všechny ostatní dopravy podílí na produkci emisí skleníkových plynů, což je hlavní důvod změn klimatu. Disertační práce je zaměřena na možnost využití alternativního zdroje energie (paliva, motor) v letectví, aby se snížily emise produkované letadel. Oblast,na která již pracuje je všeobecné letectví, zejména letadel kategorie LSA a VLA. Tři možnosti, alternativní zdroj energie, budou diskutovány. První používá LPG palivo, další je elektrické motory, a poslední přidání katalyzátoru a výfukového systému. U každého z nich bude uvedeno výhody a nevýhody, hlavní změnu pohon letadla nebo výfukového systému a různé výkonnosti letadla v důsledku těchto změn.
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Dependability Assessment Methods for Complex Electronic Systems for Space Applications
Zakucia, Jozef ; Třetina, Karel (referee) ; Vintr, Zdeněk (referee) ; Hlinka, Jiří (advisor)
This thesis deals with a common cause failure analysis (CCF) for space devices. This analysis belongs among dependability analyses, which have not been sufficiently developed in a field of space industry in corresponding technical and normative documents. Therefore, we focused on devising a new procedure of a qualitative and quantitative common cause failure analysis for the space applications herein. This new procedure of the qualitative and quantitative CCF analysis was applied on redundant systems of a special space device microaccelerometer (ACC), which was developed in VZLÚ. Performance of the qualitative CCF analysis can lead to recommendations to change design of the system, making the system less susceptible to the common cause failures. Performance of the quantitative CCF analysis and its inclusion into the computation of the system reliability can lead to a more accurate estimation of the reliability (in most cases it leads to decreasing the system reliability). During the development of the ACC there were not defined any requirements to perform the CCF analysis within general dependability requirements (defined by the customer and by ECSS standards). Hence, we compared computations of the ACC reliability with and without considering the CCFs. When the CCFs were considered, the reliability of the ACC was decreased according to our assumption. On our example of the ACC we showed advantages of the performance of the CCF analysis within the dependability analyses during development of the space devices.
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Optimization of Hydraulic System and its Components for Commuter Category Airplanes
Kameník, Luboš ; Rousek, Miroslav (referee) ; Hlinka, Jiří (referee) ; Třetina, Karel (advisor)
The dissertation thesis deals with optimization of the selected areas of the hydraulic system for small and medium transport aircrafts. Newly developed small aircraft EV-55 is a representative in the category of the small aircrafts . The selected areas of the hydraulic systems , important and useful for domestic producers of the hydraulic devices and whole hydraulic systems for the airplane EV-55 , are subjected to optimization efforts in the dissertation thesis. Design parameters of the hydraulic system (type of hydraulic source, level of pressure, weight of connecting tube), hydraulic devices ( tribology, machining process), simulation of the servomechanism and areas of diagnostic of technical status of the hydraulic system are optimized in the dissertation thesis.
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Optimization of Hydraulic System and its Components for Commuter Category Airplanes
Kameník, Luboš ; Rousek, Miroslav (referee) ; Hlinka, Jiří (referee) ; Třetina, Karel (advisor)
The dissertation thesis deals with optimization of the selected areas of the hydraulic system for small and medium transport aircrafts. Newly developed small aircraft EV-55 is a representative in the category of the small aircrafts . The selected areas of the hydraulic systems , important and useful for domestic producers of the hydraulic devices and whole hydraulic systems for the airplane EV-55 , are subjected to optimization efforts in the dissertation thesis. Design parameters of the hydraulic system (type of hydraulic source, level of pressure, weight of connecting tube), hydraulic devices ( tribology, machining process), simulation of the servomechanism and areas of diagnostic of technical status of the hydraulic system are optimized in the dissertation thesis.
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Prediction of Warranty Costs
Vintr, Michal ; Chovanec,, Alexej (referee) ; Čorňák, Štefan (referee) ; Hlinka, Jiří (referee) ; Teš, Vasilij (advisor)
The thesis deals with warranty costs and their prediction when providing one-dimensional and two-dimensional warranties. This thesis focuses on the presentation of practically applied methods and procedures which enable suppliers and manufacturers to get the information necessary for rational decision making while providing warranties for complex products as early as in the initial stages of their life cycle. The thesis starts with a concise summary and evaluation of a present state of the issue. In the first part of the thesis the possibilities of warranty costs prediction for complex products are analyzed when using one-dimensional and namely two-dimensional quality warranties. In this part there is a detailed analysis of different possibilities when predicting systems and items reliability. Next, there is introduced the way of integrating warranty costs prediction into the FMEA/FMECA method. In the second part of the thesis there is specified the procedure for determining the moment of warranty period termination using two-dimensional warranty in case sufficient data from complaint procedure is not available. In the third part the time development of warranty costs and related measures are determined, and the way of prediction of their time development is suggested. The way of continuous monitoring, and evaluating warranty costs and related measures are also introduced in this part of the thesis.
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Cockpit instruments for four-seater sport and leisure aircraft
Liberda, Jiří ; Janhuba, Luboš (referee) ; Hlinka, Jiří (advisor)
This master thesis includes a comprehensive review of four-seater sport and leisure aircraft with focus on their cockpit instruments. The description of the selected glass cockpits is listed. Thesis also includes design of instrument panel, which is designed according to the relevant regulations and standard configuration of existing aircrafts. There is also a brief overview of the regulations necessary for the installation of these systems in the aircrafts. At the end of the this work is failure mode and effects analysis, with calculation of probability malfunction for critical functions.
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Functional Hazard Assessment of Small Aircraft
Hartman, Matěj ; Janhuba, Luboš (referee) ; Hlinka, Jiří (advisor)
The object of this diploma thesis is to perform Functional Hazard Assessment of small four-seat aircraft according to Federal Aviation Regulations Part 23, which would be similar to present aircrafts on market. Input data were acquired by research of systems aircrafts use on current market. On this basis the Functional Hazard Assessment was performed ad aircraft level. Total loss of power supply was qualified as Catastrophic therefore is used in following assessment. A preliminary failure rate assessment of typical parts used in electrical system was performed at the end of diploma thesis. For the most crucial parts a simple model was created and failure rate computed.
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The Landing Gear design for RAPID 600 aircraft
Chren, Tibor ; Hlinka, Jiří (referee) ; Píštěk, Antonín (advisor)
This diploma thesis deals with design of retractable landing gear for Rapid 600 aircraft. The main purpose of this thesis is to analyze different retraction options for front and main landing gear and resulting selection of suitable variants. The thesis is consequently concerned with design of selected options including proposal of automatic landing gear control system and specifying the features and characteristics of this system. In the thesis there is also included the analysis of critical flight conditions which could be detected by this system.
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Functional Hazard Assessment (FHA) of 4-seat aircraft
Jakl, Jan ; Weisman, Andrej (referee) ; Hlinka, Jiří (advisor)
At the beginning this master's thesis includes of a comprehensive review of aircraft accidents in this category, 2-6-digit aircraft for passenger transport. Since this work focused on autopilot, so naturally there is a basic overview of most common autopilots, which can be found in these aircraft now, but in the future. Functional hazard analysis (FHA) for the 4-seater plane for passenger services primarily investigates cases of catastrophic malfunction, which in most cases accompanied by the likelihood taken from different databases. The airplane, which is created for this analysis will preferably equipped with instruments for IFR flights. There is also a brief overview of the regulations necessary for the installation of these systems in the airplane. At the end of this work is to design the dashboard, a design layout of equipment for future aircraft, with an emphasis on maximum transparency.
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