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    Flight Test of Pilot-Aircraft Haptic Feedback System
    (MATEC Web of Conferences, 2019-12-17) Zikmund, Pavel; Dubnický, Lukáš; Horpatzká, Michaela; Macík, Miroslav; Jebáček, Ivo
    This research is focused on an innovative improvement of pilot-aircraft interaction and is targeted on small aircraft. Haptic feedback is performed by actuators mounted on an aircraft's controls. The purpose of the actuators on a control stick and pedals is stall warning and a pilot guiding to safe and economical flight regimes. The feedback system mediates airflow data as angles of attack and sideslip. The paper brings results of a flight test of the proposed system. Qualitative evaluation of the haptic feedback inflight is presented. Benefits of the system are presented on a sideslip during turning. Some recommendations for the haptic pilot-aircraft interaction are stated within the discussion of the flight test results.
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    Shear strength of thin web – influence of lighting openings and diagonal tension
    (Taylor & Francis, 2016-04-11) Horák, Marek; Píštěk, Antonín
    This article provides information about stress analysis of thin beam webs with and without lighting openings. The study described in this paper was carried out in order to investigate the influence of circular lighting openings in planar webs on critical web shear force, distribution of transverse web deformations, and also strain and stress distribution in the web plate. The main goal was to compare pre- and post-buckling behaviour of a thin web with and without lighting openings under shear load.
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    More Haptic Aircraft
    (IOP Publishing Ltd, 2024-03-13) Zikmund, Pavel; Horpatzká, Michaela; Procházková, Hana; Macík, Miroslav
    This paper presents a comprehensive review of haptic feedback in light aircraft control. It provides an overview of the results and experiences gained from a previous research project focused on the design and testing of pilot haptic feedback hardware. The objective of this paper is to outline a roadmap for the future development of “More Haptic Aircraft,” incorporating principles of human-centred design into light aircraft cockpits equipped with the presented haptic feedback device.
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    Unmanned Aerial Vehicles for Alient Plant Species Detection and Monitoring
    (International Society of Photogrammetry and Remote Sensing (ISPRS), Copernicus, 2015-09-02) Dvořák, Petr; Müllerová, Jana; Bartaloš, Tomáš; Brůna, Josef
    Invasive species spread rapidly and their eradication is difficult. New methods enabling fast and efficient monitoring are urgently needed for their successful control. Remote sensing can improve early detection of invading plants and make their management more efficient and less expensive. In an ongoing project in the Czech Republic, we aim at developing innovative methods of mapping invasive plant species (semi-automatic detection algorithms) by using purposely designed unmanned aircraft (UAV). We examine possibilities for detection of two tree and two herb invasive species. Our aim is to establish fast, repeatable and efficient computer-assisted method of timely monitoring, reducing the costs of extensive field campaigns. For finding the best detection algorithm we test various classification approaches (object-, pixel-based and hybrid). Thanks to its flexibility and low cost, UAV enables assessing the effect of phenological stage and spatial resolution, and is most suitable for monitoring the efficiency of eradication efforts. However, several challenges exist in UAV application, such as geometrical and radiometric distortions, high amount of data to be processed and legal constrains for the UAV flight missions over urban areas (often highly invaded). The newly proposed UAV approach shall serve invasive species researchers, management practitioners and policy makers.
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    Pilot-aircraft haptic feedback tests
    (Emerald Publishing Limited, 2020-10-25) Zikmund, Pavel; Horpatzká, Michaela; Dubnický, Lukáš; Macík, Miroslav; Jebáček, Ivo
    This paper deals with a pilot-aircraft interaction with a haptic feedback. The haptic feedback is mediated by active elements in control stick and rudder pedals. The paper presents results of tests carried out on a flight simulator and flight tests.