Animal Locomotion: A New Spin on Bat Flight Michael Dickinson  Current Biology  Volume 18, Issue 11, Pages R468-R470 (June 2008) DOI: 10.1016/j.cub.2008.03.048 Copyright © 2008 Elsevier Ltd Terms and Conditions

Figure 1 Moth wings and bat wings both make leading edge vortices. (A) The wings of a large hawk moth create a prominent leading edge vortex during the downstroke, as visualized on a tethered animal flying in a smoke rake within a wind tunnel. The photograph shows the flow around a thin section of the wing (modified from [19] with permission of the Company of Biologists). (B) Bat wings, operating at the same Reynolds number (Re ∼ 5000), also create a leading edge vortex, as visualized using the technique of digital particle image velocimetry (modified with permission from [4], with permission from AAAS). Current Biology 2008 18, R468-R470DOI: (10.1016/j.cub.2008.03.048) Copyright © 2008 Elsevier Ltd Terms and Conditions