Práce a štúdie - Vydanie 17

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Author: search.filters.author.Pecho, PavolHas files: Yes

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    Systém pre meranie vybraných veličín vo veternom tuneli
    (University of Žilina, 2025) Antoniuk, Kateryna; Pecho, Pavol
    The article focuses on the design and implementation of a system for measuring selected quantities intended for application in a wind tunnel. The theoretical part includes a detailed description of the development of a mechanical transmission system, whose task is to convert aerodynamic forces into an analog signal, which can be measured and processed using Arduino microcomputers. Another part of the work involves the development of software that subsequently processes the analog signal and converts it into a digital format. The result of this conversion is the final display of the necessary data on an external screen in the form of numbers and graphs. Significant attention is given to the calibration of scales and the correct integration of sensors for measuring flow speed, to enhance the accuracy and reliability of measuring the aerodynamic characteristics of tested objects. The output presents a functional prototype of the system and its demonstration on specific examples. The system is expected to be further used for research projects.
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    Komplexné modelovanie prúdenia okolo viaczložkových konfigurácií
    (University of Žilina, 2025) Timková, Monika; Pecho, Pavol
    V diplomovej práci bola riešená problematika návrhu a analýzy viaczložkových zakončení krídla s cieľom zlepšiť aerodynamické charakteristiky nosnej plochy. Študovaný bol vplyv dvoch konfigurácií typu wing-grid – s prvkami v rôznych výškach a s prvkami v jednej línii. Cieľom bolo navrhnúť riešenia prispievajúce k zníženiu indukovaného odporu, zvýšeniu vztlaku a zlepšeniu aerodynamickej efektívnosti. Navrhnuté 3D modely boli analyzované pomocou simulácií v softvéri Autodesk CFD pre rôzne uhly nábehu. Výsledky viaczložkových konfigurácií boli porovnané s referenčným krídlom a blended wingletom. Pre overenie simulácií bol vytvorený zmenšený model testovaný vo veternom tuneli. Na základe analýz bola určená najefektívnejšia konfigurácia, pričom sa potvrdilo zlepšenie aerodynamickej efektivity a mierne zníženie indukovaného odporu.
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    Optimalizácia riadenia UAV: analýza ľudského faktora a jeho vplyv na bezpečnosť a efektivitu prevádzky
    (University of Žilina, 2025) Zacharová, Alexandra; Pecho, Pavol
    Currently, the use of unmanned aerial vehicles (UAVs) is on the rise, which implies that care must be taken to ensure safe operation. Safe operation depends on several factors, not only technical but also, to a significant extent, on the human factor, the human factor. This paper aims to investigate the impact of the human factor, specifically the impact of cognitive ability, stress and reaction time of pilots on stress reactions in various simulated emergency situations. The goal of the research is to optimize flight procedures and minimize the negative impact of the human factor on UAV control. In the experimental part, the research addresses the variability of heart rate (HRV) and electroencephalographic (EEG) data that were measured during UAV control in the presence of simulated critical situations. Other measured parameter such as reaction time, maneuver accuracy or stress response provide important information about the neurophysiological load of operators. Thus, the outcome of the study is to identify critical situations, analyze decision-making processes and propose streamlined training procedures for UAV operators.