Michálek, TomášNovák, MartinAbsolon, StanislavHůlek, David2019-05-222019-05-2220181822-296Xhttps://hdl.handle.net/10195/72925The turn of the first and second millennium brought development of many technologies. One of these technologies are unmanned aerial vehicles. Success in armies meant an expansion into the civil sector. Requirements for rapid installation into an armament and costs as low as possible meant the usage of current aircraft engines without any further modifications. Especially in an effort to achieve maximal altitude of the vehicle the engine without the modification could be a cause of unsuccessful effort of exploitation of vehicle´s options. Simple analyses of the vehicles and their current propulsion systems were found significant elements of their interconnections. Then the currently appropriate propulsion systems were assigned with a choice justification and its possible alternatives, hazards, various advantages and so on. Then a type of the engine which has not been fully utilized on these vehicles yet was theoretically designed. The point that this engine has not been fully utilized on these vehicles is precisely why it could bring new benefits to this area. It could even outweigh the advantages of the engines currently used on these vehicles and potentially replace some of them. This part of the theoretical engine design is the subject of this article.p. 811-815engopen accessUASUAVHALE UAVunnamed vehicles with high ceilingpropulsion systemsaircraft enginesUAS UAV LETOUN HALEnepojmenovaná vozidla s vysokým stropempohonné systémyletecké motoryConferenceObject2-s2.0-8505557611239882343