Results 11 to 20 of about 5,063 (265)
Ornithopter Type Flapping Wings for Autonomous Micro Air Vehicles [PDF]
Aerospace, 2015 In this paper, an ornithopter prototype that mimics the flapping motion of bird flight is developed, and the lift and thrust generation characteristics of different wing designs are evaluated.
Sutthiphong Srigrarom, Woei-Leong Chan
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Periodic and chaotic flapping of insectile wings [PDF]
The European Physical Journal Special Topics, 2015 Insects use flight muscles attached at the base of the wings to produce impressive wing flapping frequencies. The maximum power output of these flight muscles is insufficient to maintain such wing oscillations unless there is good elastic storage of energy in the insect flight system.
Huang, Yangyang, Kanso, Eva
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Aerodynamic effects of flexibility in flapping wings [PDF]
Journal of The Royal Society Interface, 2009 Recent work on the aerodynamics of flapping flight reveals fundamental differences in the mechanisms of aerodynamic force generation between fixed and flapping wings. When fixed wings translate at high angles of attack, they periodically generate and shed leading and trailing edge vortices as reflected in their fluctuating aerodynamic force traces and ...
Liang, Zhao +3 more
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Bio-Inspired Flexible Flapping Wings with Elastic Deformation
Aerospace, 2017 Over the last decades, there has been great interest in understanding the aerodynamics of flapping flight and development of flapping wing Micro Air Vehicles (FWMAVs).
Tien Van Truong +2 more
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EngThis article presents a framework of using MEMS sensors to investigate unsteady flow speeds of a flapping wing or the new concept of sensors on flapping wings (SOFWs).
Lung-Jieh Yang +4 more
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The Functions of Phasic Wing-Tip Folding on Flapping-Wing Aerodynamics
BiomimeticsInsects produce a variety of highly acrobatic maneuvers in flight owing to their ability to achieve various wing-stroke trajectories. Among them, beetles can quickly change their flight velocities and make agile turns.
Yiming Li +4 more
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Fruit fly scale robots can hover longer with flapping wings than with spinning wings. [PDF]
J R Soc Interface, 2016 Hovering flies generate exceptionally high lift, because their wings generate a stable leading edge vortex. Micro flying robots with a similar wing design can generate similar high lift by either flapping or spinning their wings.
Hawkes EW, Lentink D.
europepmc +2 more sources
Journal of Biomechanical Science and Engineering, 2018 Insect wings change its shape passively by the aerodynamic and inertial forces when flapping, which can greatly affect its aerodynamic performances. In order to confirm the importance of the fluid-structure interaction in flapping wing aerodynamics, we ...
Toshiyuki NAKATA, Ryusuke NODA, Hao LIU
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Forward flight of birds revisited. Part 2: short-term dynamic stability and trim [PDF]
Royal Society Open Science, 2014 Thrust generation by flapping is accompanied by alternating pitching moment. On the down-stroke, it pitches the bird down when the wings are above its centre of gravity and up when they are below; on the up-stroke, the directions reverse.
G. Iosilevskii
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Coupled piezoelectric fans with two degree of freedom motion for the application of flapping wing micro aerial vehicles [PDF]
, 2008 Piezoelectric fans consisting of a piezoelectric layer and an elastic metal layer were prepared by epoxy bonding and a coupled flexible wing was formed by a pair of carbon fibre reinforced plastic wing spars and polymer skin attached to two ...
Lal Kummari, K. +5 more
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