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Fourth-generation biofuels for jet engines
Marko, Adam ; Mišík, Ondrej (referee) ; Malý, Milan (advisor)
The bachelor thesis deals with the decarbonisation of air transport and the possible use of biofuels to power jet engines. As the use of the current fuel, kerosene, is time limited due to finite oil supplies, research and testing of its environmentally friendly successors is necessary. Equally important is the parallel development of compatible aviation and airport infrastructure, both in the form of airframes, engines and fuel systems and ground support equipment. In the event of a transition to a new type of aviation fuel, it is essential that it is technically advanced, affordable, environmentally sound, safe and has a wide supply chain. Currently, the scientific community is most focused on the use of sustainable aviation fuels SAF, hydrogen, ammonia, LNG and e-fuels. To qualify as a biofuel, the production process must be carbon neutral and the primary source of production must be renewable energy.
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Aerodynamic Borne Noise of Passenger Cars
Benka, Miroslav ; Prokop, Aleš (referee) ; Novotný, Pavel (advisor)
Among the most discussed problems in today's motor mechanics I considers the issue of the economy and also the emissions resulting from the use of cars. The trend is pushing emissions and operating costs down. There are several possible solutions to achieve greater efficiency. The most used is the so-called downsizing when the reduction of cylinder capacity while maintaining performance characteristics remain or even improve. This has the effect on the life of the engine and therefore some automakers try to refrain from this trend. In this thesis I will discuss the issue of vehicle noise, its resources focusing mainly on aerodynamic noise of a passenger car, the possibilities to reduce it and discuss how this market will develop in the future.
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Aerodynamic Borne Noise of Passenger Cars
Benka, Miroslav ; Prokop, Aleš (referee) ; Novotný, Pavel (advisor)
Among the most discussed problems in today's motor mechanics I considers the issue of the economy and also the emissions resulting from the use of cars. The trend is pushing emissions and operating costs down. There are several possible solutions to achieve greater efficiency. The most used is the so-called downsizing when the reduction of cylinder capacity while maintaining performance characteristics remain or even improve. This has the effect on the life of the engine and therefore some automakers try to refrain from this trend. In this thesis I will discuss the issue of vehicle noise, its resources focusing mainly on aerodynamic noise of a passenger car, the possibilities to reduce it and discuss how this market will develop in the future.
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