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Modern methods for aerodynamic drag reduction of road vehicles
Šardický, Jakub ; Hejtmánek, Petr (referee) ; Čavoj, Ondřej (advisor)
This work is focused on the summary of the elements that contribute reducing aerodynamic resistance of vehicles. Aerodynamic drag is about one-third of the total resistance of the vehicle. Just today, in the 21st century it is a big effort to eliminate excess combustion and consumption of the car, and here plays a big part of the resistance of the vehicle. For analysis are already using computer simulations that greatly increase the efficiency and speed of construction.
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Assistance Systems of Modern Vehicles
Piskoř, Martin ; Čavoj, Ondřej (referee) ; Hejtmánek, Petr (advisor)
This bachelor’s thesis deals with assistance systems of modern vehicles. The first part describes active and passive safety of modern vehicles. Differences of active and passive safety are mentioned in first part too. The second part attends to basic split of assistance systems. The third part presents description of some assistance systems, which are installed in modern vehicles. In conclusion, there is description of the most common sensors, which are used by assistance systems.
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Wind tunnels for automobiles
Gross, Arnold ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
The bachelor thesis focuses on wind tunnels for automobiles. The first part of the bachelor thesis refers to the basic division of wind tunnels and to the main description of each section, which consists of. Then focuses to the monitoriest selected paramatres which are necessary for designing cars. The next part refers to the most efficient and the most important parts of the wind tunnels.el. The final part refers to examples of selected tunnels with specifyied basic parameters.
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Methods for determining aerodynamic properties of vehicles
Páleš, Patrik ; Blaťák, Ondřej (referee) ; Čavoj, Ondřej (advisor)
The aim of the bachelor’s thesis is a description of methods being used for measurements of aerodynamic characteristics of automobiles. The exact determination of the aerodynamic characteristics requires sophisticated testing equipment and advanced engineering procedures. The research comprises several approaches. Computational fluid dynamics (CFD) is based on turbulent models application such as RANS, LES and DNS. Pressure distribution on a vehicular body surface and an air flow along the vehicle are monitored in wind tunnels. Flow visualization is carried out by optical (PIV, LDA) and non-optical methods. Experimental road testing methods are focused on multiple parameters including a vehicle directional stability, its cross-wind sensitivity, engine cooling system and many others.
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Racing car technology in the period of World Wars
Ducheček, Martin ; Vančura, Jan (referee) ; Čavoj, Ondřej (advisor)
This bachelor thesis describes developement and historical racing vehicles especially in interwar period and looks into their influence to cars. In the next section, rules and conditions of competition, the first important race and start of Grand Prix, are briefly explained. A purpose of this thesis is to introduce important technology progress and inovations of this period, which have influenced a construction of cars for long decades, many of them are used to this day.
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Motor Vehicles Non-Synchronous Transmission
Červenka, Filip ; Čavoj, Ondřej (referee) ; Hejtmánek, Petr (advisor)
The topic of this bachelor thesis is Motor Vehicles Non-synchronous Transmission. The thesis is focused on the basic calculation formulas used in the design of gearboxes, the classification of gearboxes, the description of non-synchronous transmissions, including the description of their construction and the comparison between synchronous and non-synchronous transmissions. Also included are the principles of quickshift gearboxes. The thesis concludes with a list of several manufacturers of non-synchronous transmissions.
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Ground effect in motorsport
Mlčoch, Pavel ; Hejtmánek, Petr (referee) ; Čavoj, Ondřej (advisor)
This bachelor thesis describes ground effect, its influence on car aerodynamics and its use in motorsport. The thesis describes the dependence of downforce created by ground effect on the design and set-up of the race car, as well as on the downforce generating parts' relative movement in relation to the track during a race. Advantages and disadvantages of the use of ground effect aerodynamics are discussed as well. Next, there is brief summary of the use of ground effect throughout the history of motorsport. At the end, attention is paid to modern race and sport cars using the ground effect aerodynamics.
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