Results 1 to 10 of about 11,905 (120)
Concept of Modular, Self-Supporting Cable for Powering the Hovering Unmanned Aerial Vehicle [PDF]
Interdisciplinary Description of Complex Systems, 2020 Hovering unmanned aerial vehicles or drones can function as distant platforms for mounted sensors, as signal transceivers, or for other purposes. However, they must be tethered.
Ivan Tukaric, Josip Stepanic
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Robotic Hummingbird Axial Dynamics and Control near Hovering: A Simulation Model
Actuators, 2023 After a short overview of the COLIBRI project, this paper considers the cycle-averaged flight dynamics of a flapping-wing robot near hovering, taking advantage of the weak coupling between the roll and pitch axes.
Yousef Farid +5 more
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Bulletin of the Iraq Natural History Museum, 2022 The habitat type and food availability always influence the population size of many organisms. Bird’s feeding pattern should be abstracted to complete avian community structure data.
Soumya Ranjan Biswal, Bibhu Prasad Panda
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Hovering hummingbird wing aerodynamics during the annual cycle. II. Implications of wing feather moult [PDF]
Royal Society Open Science, 2018 Birds usually moult their feathers in a particular sequence which may incur aerodynamic, physiological and behavioural implications. Among birds, hummingbirds are unique species in their sustained hovering flight.
Yonathan Achache +2 more
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Journal of Biomechanical Science and Engineering, 2020 While rovers are of importance for Mars exploration in terms of various surveillance, surface rovers may encounter great challenges due to rough terrain and complex turbulent environment on Mars partly because aerial vehicles have difficulties to stay ...
Tianyang XIAO, Hao LIU
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Tandem-wing interactions on aerodynamic performance inspired by dragonfly hovering
Royal Society Open Science, 2021 Dragonflies possess two pairs of wings and the interactions between forewing (FW) and hindwing (HW) play an important role in dragonfly flight. The effects of tandem-wing (TW) interactions on the aerodynamic performance of dragonfly hovering have been ...
Liansong Peng +4 more
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Hover Location Selection and Flight Path Optimization for UAV for Localization Applications [PDF]
Jisuanji kexue, 2021 A typical application of UAV is to locate ground targets.This paper proposes to let a UAV hover at predetermined positions to broadcast beacon signals.When a ground node receives beacons from at least three hovering positions,it can localize itself.This ...
ZHAO Xiao-wei, ZHU Xiao-jun, HAN Zhou-qing
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High precision visual localization method of UAV based on feature matching
Frontiers in Computational Neuroscience, 2022 In this paper, the precision hovering problem of UAV operation is studied. Aiming at the diversity and complexity of the UAV operating environment, a high-precision visual positioning and orientation method based on image feature matching was proposed ...
Bayang Xue +5 more
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Sunbirds' tendency to hover: the roles of energetic rewards, inflorescence architecture and rain
Journal of Avian Biology, 2021 Although the Old World sunbirds are generally considered to be an ecological analogue of the New World hummingbirds, it is commonly believed that in contrast to hummingbirds, sunbirds perch while feeding.
Zuzana Sejfová +6 more
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Monocular-Vision-Based Autonomous Hovering for a Miniature Flying Ball
Sensors, 2015 This paper presents a method for detecting and controlling the autonomous hovering of a miniature flying ball (MFB) based on monocular vision. A camera is employed to estimate the three-dimensional position of the vehicle relative to the ground without ...
Junqin Lin, Baoling Han, Qingsheng Luo
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