Results 221 to 230 of about 5,063 (265)
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The gust-mitigating potential of flapping wings
Bioinspiration & Biomimetics, 2016Nature's flapping-wing flyers are adept at negotiating highly turbulent flows across a wide range of scales. This is in part due to their ability to quickly detect and counterract disturbances to their flight path, but may also be assisted by an inherent aerodynamic property of flapping wings.
Alex, Fisher +6 more
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Section Design for Hydrofoil Wings with Flaps
Journal of Hydronautics, 1978The basic problem of a flapped NACA-16 foil is its poor pressure distribution around the flapped region. With the flap deflected, the velocity distribution becomes a very unfavorable shape in terms of cavitationinception and boundary-layer separation. This type of flow field results in low flap effectiveness.
Y. SHEN, R. EPPLER
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Aerodynamic sound generation of flapping wing
The Journal of the Acoustical Society of America, 2008The unsteady flow and acoustic characteristics of the flapping wing are numerically investigated for a two-dimensional model of Bombus terrestris bumblebee at hovering and forward flight conditions. The Reynolds number Re, based on the maximum translational velocity of the wing and the chord length, is 8800 and the Mach number M is 0.0485.
Youngmin, Bae, Young J, Moon
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Study on Transmission Mechanism and Flexible Flapping Wings of an Underactuated Flapping Wing Robot
Journal of Intelligent & Robotic Systems, 2022Wei Sun +3 more
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2007
Flying animals flap wings to create lift and thrust as well as to perform remarkable maneuvers with rapid accelerations and decelerations. Insects, bats, and birds provide illuminating examples of utilizing unsteady aerodynamics to design future MAVs.
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Flying animals flap wings to create lift and thrust as well as to perform remarkable maneuvers with rapid accelerations and decelerations. Insects, bats, and birds provide illuminating examples of utilizing unsteady aerodynamics to design future MAVs.
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Visualization of flapping wing of the drone beetle
Journal of Visualization, 2009Investigation of flapping wings of insect are focused on low Reynolds number effect and the unsteady aerodynamic properties. Interaction between flapping wing of insects and the air flow became one of important and fundamental research topics in micro air vehicle.
Kazutaka Kitagawa +2 more
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Annals of Plastic Surgery, 2007
Single large-area or 2 small- to moderate-sized raw areas in the hand and forearm are difficult to cover with conventional groin or superficial inferior epigastric artery (SIEA) flaps. Though abdomen is a favorable donor site for a pedicled distant flap for soft tissue coverage of the hand and forearm, pedicle flaps based on paraumbilical perforators ...
B Jagannath, Kamath +2 more
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Single large-area or 2 small- to moderate-sized raw areas in the hand and forearm are difficult to cover with conventional groin or superficial inferior epigastric artery (SIEA) flaps. Though abdomen is a favorable donor site for a pedicled distant flap for soft tissue coverage of the hand and forearm, pedicle flaps based on paraumbilical perforators ...
B Jagannath, Kamath +2 more
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Aerodynamics of Soft Flapping Wings of Caudipteryx
2019This study explores the aerodynamic capacity of feathered forelimbs of Caudipteryx, the most basal non-volant maniraptoran dinosaur, with particular focus on flapping during terrestrial locomotion on a flat, horizontal substrate. In order to seek this subject, Caudipteryx and its wings have been modeled theoretically based on measuring the fossil data ...
Yaser Saffar Talori, Jing-Shan Zhao
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Flapping wing performance related to wing planform and wing kinematics
12th AIAA Aviation Technology, Integration, and Operations (ATIO) Conference and 14th AIAA/ISSMO Multidisciplinary Analysis and Optimization Conference, 2012apping wing micro air vehicles (FWMAVs), the wing performance is of paramount importance. The wing performance is mainly determined by the wing planform and the wing-beat kinematics. Since the optimization of the wing planform and the wing-beat kinematics is complicated by the apping wing aerodynamics, most FWMAV designs tend to use standard wing ...
Hugo Peters +2 more
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“Wing-flapping” develops in wingless chicks
Behavioral and Neural Biology, 1979“Wing-flapping” of 13-day-old chicks (Gallus domesticus) that had both wings amputated on the day after hatching was made visible by attaching limb prostheses (soda straws) to the stumps of the amputated wings. Typical drop-evoked, bilaterally symmetrical “wing-flapping” movements of a rate similar to that of the wings of intact control chicks were ...
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