### Session JF: Biofluids X: Flying

3:35 PM–6:11 PM, Monday, November 19, 2007
Salt Palace Convention Center Room: 151 G

Chair: Kenneth Breuer, Brown University

Abstract ID: BAPS.2007.DFD.JF.11

### Abstract: JF.00011 : The flight of the Rufus hummingbird

5:45 PM–5:58 PM

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#### Authors:

Humberto Bocanegra-Evans
(New Mexico State University)

Jeremy Pena
(New Mexico State University)

Scott Hightower
(New Mexico State University)

Bret Tobalske
(University of Portland)

James Allen
(New Mexico State University)

This paper will present preliminary experimental data for the flow field around a robotic model hummingbird flying'' in the New Mexico State large water channel. The Rufus hummingbird, which fly's with a wing beat frequency of 45Hz, in the Reynolds number range of 8,000 and a Strouhal number of 0.3 is mimicked by a two degree of freedom mechanical model operating in a large water channel. Phase locked PIV data and flow visualization results for hovering and relatively slow forward flight will be presented. Non-intrusive techniques will be used to estimate the hummingbirds lift and drag.

To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2007.DFD.JF.11