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Design of coaxial high-speed gear reducer
Neklapil, Libor ; Ing. Tomáš Hubáček, Ph.D (referee) ; Bradáč, František (advisor)
The thesis deal with design of coaxial high-speed gear box for small-scale turboshaft engines. At the beginning a study of problems was performed and for design concept was elected version of single-shaft turbo-engine with electric generator. Kinematic diagram, type of gear design, material and lubrication method was designed. Further was solved proposal of basic gearing parameters, choice of the number of tooth and basic proposal calculations were performed. Was performed check calculation of gearing, calculation of bearings durability and was processed design documentation in required range. Designed gear reducer has two stage with three coutershafts, that are deployed evenly about main axis of reducer. First stage is gear with external gearing, second stage with internal gearing. The thesis may be used as a template for next similar gear reducers design.
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Study of Inertial Particle Separator in a typical turboprop engine
Skála, Adam ; Doupník, Petr (referee) ; Popela, Robert (advisor)
This thesis focuses on ingestion of foreign objects into standard turboprop engine GE H80 situated in aircraft Let L-410 Turbolet. Aim of this study is to create methodology of numerical simulation of particle movement inside the engine, which could be used during design process of Inertial Particle Separator device. Thesis consists of backward-facing step benchmark study which validates used methodology. Second part describes flow field calculation and numerical setup. The last part is dedicated to particle tracking analysis. Simulated trajectories are visually investigated, and coordinates of particle impacts at 1st rotor of a compressor are correlated to position of real observed damage.
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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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Conversion possibilities of piston twin engine Beechcraft B60 Duke aircraft into prop-jet aircraft
Skládal, Zdeněk ; Šošovička, Róbert (referee) ; Šplíchal, Miroslav (advisor)
Master’s thesis deals with the issue of a conversion of a twin-engined piston aircraft Beechcraft B60 Duke into turboprop engines Walter M601 or Pratt & Whitney Canada PT6.The paper focuses on a financial analysis of conducting of the conversion, resources needed for a certification, authorization for the traffic in the Czech Republic and determination of the rate of return on investment.The thesis further deals with elaborating of the flight and prerformance characteristics, operation costs of both of the proposed engines and compares them with current characteristics and operation costs.
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Turboprop powerplant installation into small twoseater airplane
Kövér, Ondřej ; Jebáček, Ivo (referee) ; Juračka, Jaroslav (advisor)
The diploma thesis deals with the problem of application of turboprop engine to a small 2-seater airplane. In the first part, reasons why the application is in considered are stated. Then, the air-plane is characterised, the choice of the most suitable engine, propeller and the weight analysis is made and the centres of gravity are calculated. For chosen engine and propeller, in chapter 6, the flight performance is calculated. In chapter 7 follows calculations of flight envelopes and the lim-it positive and negative load factor is stated. Flight envelopes calculations are followed by the calculation of engine mount loads of flight and ground cases. In chapter 9, the design of engine mount, inlet and outlet system and positioning of important elements are solved. The design part is followed by strength analysis of engine mount and its attachment into engine partition.
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Thermodynamics of jet engines
Bártek, Petr ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
This research introduces the reader to a brief analysis of various types of aircraft engines, with particular focus upon jet engines. Amongst the types of jet engines which will be covered are turboprop, turbojet, turbofan, ramjet, propfan, & the pulse engine. This body of work investigates the construction, operation and characteristics of these engines, including a analysis of their thermodynamic working cycle & the power of thrust produced. The main objective is to achieve a full comparison of the different kinds of engines using variables such as efficiency, fuel consumption and emission production.
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Thermodynamics turboprop engines
Halama, Tadeáš ; Charvát, Pavel (referee) ; Štětina, Josef (advisor)
This research deals with issues of turboprop engines from the perspective of thermodynamics. In introduction, the reader is familiar with history of aircrafts engines. Furthermore, this work presents a comparison of piston and turboprop engines. In this section also describes the working principle of these engines and their main characteristics and advantages. The main third part focused on the thermodynamics of the turboprop engine, mainly in terms of the algorithm for calculation. This work is also included deduce formula for tensile strength of turboprop engine. The last part describes current trends in the design and construction of aircraft propulsion units, together with the advantages of turboprop engine.
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Study of Inertial Particle Separator in a typical turboprop engine
Skála, Adam ; Doupník, Petr (referee) ; Popela, Robert (advisor)
This thesis focuses on ingestion of foreign objects into standard turboprop engine GE H80 situated in aircraft Let L-410 Turbolet. Aim of this study is to create methodology of numerical simulation of particle movement inside the engine, which could be used during design process of Inertial Particle Separator device. Thesis consists of backward-facing step benchmark study which validates used methodology. Second part describes flow field calculation and numerical setup. The last part is dedicated to particle tracking analysis. Simulated trajectories are visually investigated, and coordinates of particle impacts at 1st rotor of a compressor are correlated to position of real observed damage.
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Turboprop powerplant installation into small twoseater airplane
Kövér, Ondřej ; Jebáček, Ivo (referee) ; Juračka, Jaroslav (advisor)
The diploma thesis deals with the problem of application of turboprop engine to a small 2-seater airplane. In the first part, reasons why the application is in considered are stated. Then, the air-plane is characterised, the choice of the most suitable engine, propeller and the weight analysis is made and the centres of gravity are calculated. For chosen engine and propeller, in chapter 6, the flight performance is calculated. In chapter 7 follows calculations of flight envelopes and the lim-it positive and negative load factor is stated. Flight envelopes calculations are followed by the calculation of engine mount loads of flight and ground cases. In chapter 9, the design of engine mount, inlet and outlet system and positioning of important elements are solved. The design part is followed by strength analysis of engine mount and its attachment into engine partition.
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Conversion possibilities of piston twin engine Beechcraft B60 Duke aircraft into prop-jet aircraft
Skládal, Zdeněk ; Šošovička, Róbert (referee) ; Šplíchal, Miroslav (advisor)
Master’s thesis deals with the issue of a conversion of a twin-engined piston aircraft Beechcraft B60 Duke into turboprop engines Walter M601 or Pratt & Whitney Canada PT6.The paper focuses on a financial analysis of conducting of the conversion, resources needed for a certification, authorization for the traffic in the Czech Republic and determination of the rate of return on investment.The thesis further deals with elaborating of the flight and prerformance characteristics, operation costs of both of the proposed engines and compares them with current characteristics and operation costs.
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