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Dragonfly flight: free-flight and tethered flow visualizations reveal a diverse array of unsteady lift-generating mechanisms, controlled primarily via angle of attack.

Abstract:

Here we show, by qualitative free- and tethered-flight flow visualization, that dragonflies fly by using unsteady aerodynamic mechanisms to generate high-lift, leading-edge vortices. In normal free flight, dragonflies use counterstroking kinematics, with a leading-edge vortex (LEV) on the forewing downstroke, attached flow on the forewing upstroke, and attached flow on the hindwing throughout. Accelerating dragonflies switch to in-phase wing-beats with highly separated downstroke flows, with ...

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Publication status:
Published

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Publisher copy:
10.1242/jeb.01262

Authors


Thomas, AL More by this author
More by this author
Institution:
University of Oxford
Department:
Oxford, MPLS, Zoology
Srygley, RB More by this author
Bomphrey, RJ More by this author
Journal:
The Journal of experimental biology
Volume:
207
Issue:
Pt 24
Pages:
4299-4323
Publication date:
2004-11-05
DOI:
EISSN:
1477-9145
ISSN:
0022-0949
URN:
uuid:79d8496d-5edb-43bb-87fe-c5100fb69599
Source identifiers:
209199
Local pid:
pubs:209199

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