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Experimental analysis of the leading edge vortex mechanism insects use to generate very high lift forces
Reference
S09380
Principal Investigator / Supervisor
Professor Adrian Thomas
Co-Investigators /
Co-Supervisors
Institution
University of Oxford
Department
Zoology
Funding type
Research
Value (£)
164,149
Status
Completed
Type
Research Grant
Start date
23/02/1998
End date
23/09/2001
Duration
43 months
Abstract
Recent experiments, with hawkmoths and a mechanical model moth, demonstrate that insects generate the very high lift forces they require for flight by using novel aerodynamic mechanisms. Flow visualisations show a leading edge vortex on the downstroke in both moths and model, consistent with lift enhancement by a dynamic stall mechanism. However, nothing is known about the formation and stability of the leading edge vortex. To elucidate the hawkmoth lift generating mechanism, we will build mechanical models that use a leading edge vortex to produce high lift forces. Rather than copy the hawkmoth, the models will use simple wing sections, and simple pitching, plunging, and flapping motions, with suction applied at the wingtips to generate spanwise flow. This will isolate the components of wing shape and motion responsible for the very high lift generated by flying insects.
Summary
unavailable
Committee
Closed Committee - Animal Sciences (AS)
Research Topics
X – not assigned to a current Research Topic
Research Priority
X – Research Priority information not available
Research Initiative
X - not in an Initiative
Funding Scheme
X – not Funded via a specific Funding Scheme
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