Results 11 to 20 of about 522,105 (314)
Design and Aerodynamic Analysis of Flapping Mechanism of Two-stage Flapping-wing Aircrafts
Jixie chuandong, 2022 In order to improve the flight performance of the flapping-wing aircraft, this study draws on the characteristics of the flight movement of large birds, designs a new two-stage foldable bionic flapping-wing mechanism, and establishes the kinematic and ...
Sheng Dian +3 more
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Research and Test of X-wing Flapping-wing Mechanism Based on the Crank Slider Mechanism
Jixie chuandong, 2023 A X-wing flapping-wing mechanism with wings flapping symmetrically is designed. The crank slider mechanism is adopted to convert the circular motion of the crank into the linear reciprocating motion of the straight shaft, and the straight shaft drives ...
Huang Xiansheng, Cai Yu, Li Qi, Liu Bin
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Untethered Flight of an Insect-Sized Flapping-Wing Microscale Aerial Vehicle
Nature, 2023 Please let me know if there is anything else that you need from me to expedite this. Thank you for your time and attention. Regards, Noah JafferisHeavier-than-air flight at any scale is energetically expensive. This is greatly exacerbated at small
Helbling, Elizabeth +3 more
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A Bibliometric Analysis of Flapping Wing Instrumentation
Aerospace, 2023 There are flapping wing-style systems being developed by various institutions around the world. However, despite there being many systems that superficially appear robust, there is no viable flapping wing flying system at this time.
Alex T. Lefik +2 more
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Comparison of Power Requirements: Flapping vs. Fixed Wing Vehicles
Aerospace, 2016 The power required by flapping and fixed wing vehicles in level flight is determined and compared. Based on a new modelling approach, the effects of flapping on the induced drag in flapping wing vehicles are mathematically described.
Gottfried Sachs
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Footprints of a flapping wing [PDF]
Journal of Fluid Mechanics, 2017 Birds have to flap their wings to generate the needed thrust force, which powers them through the air. But how exactly do flapping wings create such force, and at what amplitude and frequency should they operate? These questions have been asked by many researchers. It turns out that much of the secret is hidden in the wake left behind the flapping wing.
Jun Zhang
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AIP Advances, 2020 In the present study, a bionic flapping mechanism of a spatial six-bar configuration was designed to transform a single rotation of a motor into a three degrees of freedom “flapping–twist–swing” cooperative motion of a flapping wing. The kinematics model
Bing Ji +8 more
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Bio-inspired Flapping Wing Aerodynamics:A Review
Journal of the Indian Institute of ScienceThe design of micro aerial vehicles has been long inspired by biological flyers such as birds and insects. The aerodynamic principles of flapping wing flights are complex due to the rapid wing motion and the inherent complex vortex dynamics.
De Manabendra, M. +4 more
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Good vibrations for flapping-wing flyers
Science Robotics, 2020 Studies of insect flight reveal how flapping-induced vibrations augment flight stability of tailless flapping-wing flyers.
Karasek, M., Karasek, M. (author)
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Review of the Flight Control Method of a Bird-like Flapping-Wing Air Vehicle. [PDF]
Micromachines (Basel), 2023 The Bird-like Flapping-wing Air Vehicle (BFAV) is a robotic innovation that emulates the flight patterns of birds. In comparison to fixed-wing and rotary-wing air vehicles, the BFAV offers superior attributes such as stealth, enhanced maneuverability ...
Fang X +6 more
europepmc +2 more sources