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Stability versus maneuverability in hovering flight
1.C. P. Ellington, C. van den Berg, A. P. Willmott, and A. L. R. Thomas, “Leading-edge vortices in insect flight,” Nature 384, 626–630 (1996).
3.G. Spedding, M. Rosén, and A. Hedenström, “A family of vortex wakes generated by a thrush nightingale in free flight in a wind tunnel over its entire natural range of flight speeds,” J. Exp. Biol. 206, 2313–2344 (2003).
4.J. M. Birch and M. H. Dickinson, “The influence of wingwake interactions on the production of aerodynamic forces in flapping flight,” J. Exp. Biol. 206, 2257–2272 (2003).
5.A. L. R. Thomas, G. K. Taylor, R. B. Srygley, R. L. Nudds, and R. J. Bomphrey, “Dragonfly flight: Free-flight and tethered flow visualizations reveal a diverse array of unsteady lift-generating mechanisms, controlled primarily via angle of attack,” J. Exp. Biol. 207, 4299–4323 (2004).
7.R. Ramamurti and W. C. Sandberg, “A three-dimensional computational study of the aerodynamic mechanisms of insect flight,” J. Exp. Biol. 205, 1507–1518 (2002).
9.M. Sun and J. Tang, “Unsteady aerodynamic force generation by a model fruit fly wing in flapping motion,” J. Exp. Biol. 205, 55–70 (2002).
10.M. Sun and S. L. Lan, “A computational study of the aerodynamic forces and power requirements of dragonfly (aeschna juncea) hovering,” J. Exp. Biol. 207, 1887–1901 (2004).
13.Z. J. Wang, J. M. Birch, and M. H. Dickinson, “Unsteady forces and flows in low Reynolds number hovering flight: Two-dimensional computations vs robotic wing experiments,” J. Exp. Biol. 207, 449–460 (2004).
22.L. Ristroph, A. J. Bergou, G. Ristroph, K. Coumes, G. J. Berman, J. Guckenheimer, Z. J. Wang, and I. Cohen, “Discovering the flight autostabilizer of fruit flies by inducing aerial stumbles,” Proc. Natl. Acad. Sci. U. S. A. 107, 4820–4824 (2010).
24.L. Ristroph, G. Ristroph, S. Morozova, A. J. Bergou, S. Chang, J. Guckenheimer, Z. J. Wang, and I. Cohen, “Active and passive stabilization of body pitch in insect flight,” J. R. Soc., Interface 10, 20130237 (2013).
25.S. Childress, N. Vandenberghe, and J. Zhang, “Hovering of a passive body in an oscillating airflow,” Phys. Fluids 18, 117103 (2006).
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Insects and birds are often faced by opposing requirements for agile and stable flight. Here, we explore the interplay between aerodynamic effort, maneuverability, and stability in a model system that consists of a Λ-shaped flyer hovering in a vertically oscillating airflow. We determine effective conditions that lead to periodic hovering in terms of two parameters: the flyer’s shape (opening angle) and the effort (flow
acceleration) needed to keep the flyer aloft. We find optimal shapes that minimize effort. We then examine hovering stability and observe a transition from unstable, yet maneuverable, to stable hovering. Interestingly, this transition occurs at post-optimal shapes, that is, at increased aerodynamic effort. These results have profound implications on the interplay between stability and maneuverability in live organisms as well as on the design of man-made air vehicles.
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