Browsing by Author "Ondrejková, Ivana"

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    Danger of icing when operating unmanned aerial vehicles
    (University of Žilina, 2022) Ondrejková, Ivana; Kandera, Branislav
    The paper examines icing on Unmanned Aerial Vehicles (UAV) during the flight. We chose the Mavic Pro and Mavic 2 Pro UAV by company DJI to carry out the research. Research flights are performed during the early morning hours with meteorological conditions suitable for icing. We use the AirData application to analyse flight data. The aim of the work is to find out how dangerous icing is, what meteorological conditions are suitable for icing, how fast icing is formed during the operation of an unmanned aircraft and how it is possible to suppress or eliminate icing. In introduction of this work elaborated theoretical knowledge about the formation of icing and its types. Subsequently, the negative effects of icing on the flight are described, such as changes in lift, drag, controllability of the aircraft and others. The following section describes the accidents of UAV due to the impact of icing. After analysing the data from the mentioned application, we proposed recommendations for pilots of UAV. Before the flight, we recommend checking the meteorological forecast, focusing on the temperature and humidity at the flight area, usually up to 120 meters above the Earth surface. In-flight recommendations include monitoring rotation speed of propellers and frequent inspection of propellers in meteorological conditions suitable for icing and others.
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    ROZPTÝLENIE POZORNOSTI PILOTA GNSS PRIJÍMAČOM POČAS VFR LETU
    (Žilinská univerzita v Žiline, 2020) Ondrejková, Ivana; Škvareková, Iveta
    The main goal of this paper is to propose a methodology for measuring the distraction of pilot attention by GNSS receivers during flight in visibility. To carry out future research, we will use a vision tracking device, thanks to which we can monitor the collocation of the pilot's attention during individual tasks. There search will be attended by three pilots in training, according to the number of flying hours, they will be classified as beginner, intermediate and advanced. Testing will take place on the flight simulator L410 UVP-E20, which is located in the premises of LVVC ŽU at the airport in Dolný Hričov. The aim of the work will be to find out if and how much the GNSS receiver disturb the pilot during the flight in the flight level and during the visual approach to landing regarding to his experience and the number of flying hours. Subsequent analysis of the data provided by the questionnaires showed that a pilot with more flying hours, detailed theoretical knowledge and longer experience with a GNSS receiver should be less disturbe and should be able to effectively distribute his attention among all instruments. While a pilot with less number of flying hours without theoretical knowledge and previous experience with a GNSS receiver should be disturbed and inconsistent during visual landing.