Abstract
To better understand dragonflies’ remarkable flapping wing aerodynamic performance, we measured the kinematic parameters of the wings in two different flight modes (Normal Flight Mode (NFM) and Escape Flight Mode (EFM)). When the specimens switched from normal to escape mode the flapping frequency was invariant, but the stroke plane of the wings was more horizontally inclined. The flapping of both wings was adjusted to be more ventral with a change of the pitching angle that resulted in a larger angle of attack during downstroke and smaller during upstroke to affect the flow directions and the added mass effect. Noticeably, the phasing between the fore and hind pair of wings varies between two flight modes, which affects the wing-wing interaction as well as body oscillations. It is found that the momentum stream in the wake of EFM is qualitatively different from that in NFM. The change of the stroke plane angle and the varied pitching angle of the wings diverts the momentum downwards, while the smaller flapping amplitude and less phase difference between the wings compresses the momentum stream. It seems that in order to achieve greater flight maneuverability a flight vehicle needs to actively control positional angle as well as the pitching angle of the flapping wings.
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References
Shyy W, Aono H, Kang C, Liu H. An Introduction to Flapping Wing Aerodynamics. Cambridge University Press, Cambridge, 2013.
Hassanalian M, and Abdelkefi A. Classifications, applications, and design challenges of drones: A review. Progress in Aerospace Sciences, 2017, 91, 99–131.
Combes S A, Rundle D E, Iwasaki J M, Crall J D. Linking biomechanics and ecology through predator-prey interactions: Flight performance of dragonflies and their prey. Journal of Experimental Biology, 2012, 215, 903–913.
Wang L H, Zhong Z. Dynamics of the dragonfly wings raised by blood circulation. Acta Mechanica, 2014, 225, 1471–1485.
Rajabi H, and Gorb S N. How do dragonfly wings work? A brief guide to functional roles of wing structural components. International Journal of Odonatology, 2020, 23, 23–30.
Wootton R. Dragonfly flight: Morphology, performance and behaviour. International Journal of Odonatology, 2020, 23, 31–39.
Hefler C, Kang C, Qiu H H, Shyy W. Elements in Aerospace Engineering: Distinct Aerodynamics of Insect-Scale Flight. Cambridge University Press, Cambridge, UK, 2020.
Park H, Choi H. Kinematic control of aerodynamic forces on an inclined flapping wing with asymmetric strokes. Bioinspiration and Biomimetics, 2012, 7, 016008.
Zheng Y Y, Wu Y H, Tang H. Force measurements of flexible tandem wings in hovering and forward flights. Bioinspiration & Biomimetics, 2015, 10, 016021.
Wang L H, Ye W J, Zhou Y T. Impact dynamics of a dragonfly wing. Computer Modeling in Engineering & Sciences, 2020, 122, 889–906.
Nakata T, Henningsson P, Lin H T, Bomphrey R J. Recent progress on the flight of dragonflies and damselflies. International Journal of Odonatology, 2020, 23, 41–49.
Chin D D, Lentink D. Flapping wing aerodynamics: From insects to vertebrates. Journal of Experimental Biology, 2016, 219, 920–932.
Wakeling J M, Ellington C P. Dragonfly flight. II. Velocities, accelerations and kinematics of flapping flight. Journal of Experimental Biology, 1997, 200, 557–582.
Norberg R Å. Hovering flight of the dragonfly Aeschna juncea L., kinematics and aerodynamics. Swimming and Flying in Nature, 1975, 763–781.
Sun M, Lan S L. A computational study of the aerodynamic forces and power requirements of dragonfly (Aeschna juncea) hovering. Journal of Experimental Biology, 2004, 207, 1887–1901.
Liu X H, Hefler C, Fu J J, Shyy W, Qiu H H. Implications of wing pitching and wing shape on the aerodynamics of a dragonfly. Journal of Fluids and Structures, 2021, 101, 103208.
Michelin S, Llewellyn Smith S G. Resonance and propulsion performance of a heaving flexible wing. Physics of Fluids, 2009, 21, 071902.
Ha N S, Truong Q T, Goo N S, Park H C. Relationship between wingbeat frequency and resonant frequency of the wing in insects. Bioinspiration & Biomimetics, 2013, 8, 046008.
Azuma A, Watanabe T. Flight performance of a dragonfly. Journal of Experimental Biology, 1988, 137, 221–252.
Rüppel G. Kinematic analysis of symmetrical flight manoeuvres of Odonata. Journal of Experimental Biology, 1989, 144, 13–42.
Nagai H, Fujita K, Murozono M. Experimental study on forewing-hindwing phasing in hovering and forward flapping flight. AIAA Journal, 2019, 57, 3779–3790.
Zou P Y, Lai Y H, Yang J T. Effects of phase lag on the hovering flight of damselfly and dragonfly. Physical Review E, 2019, 100, 063102.
Hu Z, Deng X Y. Aerodynamic interaction between forewing and hindwing of a hovering dragonfly. Acta Mechanica Sinica, 2014, 30, 787–4799.
Sun X J, Gong X Y, Huang D G. A review on studies of the aerodynamics of different types of maneuvers in dragonflies. Archive of Applied Mechanics, 2017, 87, 521–554.
Ellington C P. The aerodynamics of hovering insect flight. V. A vortex theory. Philosophical Transactions of the Royal Society of London B: Biological Sciences, 1984, 305, 115–144.
Rayner J M V. A vortex theory of animal flight. Part 1. The vortex wake of a hovering animal. Journal of Fluid Mechanics, 1979, 91, 697–730.
Thomas A L R, Taylor G K, Srygley R B, Nudds R L, Bomphrey R J. Dragonfly flight: Free-flight and tethered flow visualizations reveal a diverse array of unsteady lift-generating mechanisms, controlled primarily via angle of attack. Journal of Experimental Biology, 2004, 207, 4299–4323.
Bomphrey R J, Nakata T, Henningsson P, Lin H T. Flight of the dragonflies and damselflies. Philosophical Transactions of the Royal Society B: Biological Sciences, 2016, 371, 20150389.
Hefler C, Qiu H H, Shyy W. Aerodynamic characteristics along the wing span of a dragonfly Pantala flavescens. Journal of Experimental Biology, 2018, 221, 171199.
Raffel M, Willert C E, Fulvio Scarano C J K, Wereley S T, Kompenhans J. Particle Image Velocimetry: A Practical Guide. Springer-Verlag Berlin Heidelberg, Berlin, Germany 2018.
Reavis M, Luttges M. Aeroodynamic forces produced by a dragonfly. 26th Aerospace Sciences Meeting, Reno, USA, 1988.
Somps C, Luttges M. Response: Dragonfly aerodynamics. Science, 1986, 231, 10.
Yates G T. Dragonfly aerodynamics. Science, 1986, 231, 10.
Rival D, Prangemeier T, Tropea C. The influence of airfoil kinematics on the formation of leading-edge vortices in bio-inspired flight. In: Taylor G K, Triantafyllou M S, Tropea C, Animal Locomotion, Berlin, Heidelberg, 2010, 261–271.
Shyy W, Liu H. Flapping wings and aerodynamic lift: The role of leading-edge vortices. AIAA Journal, 2007, 45, 2817–2819.
Hefler C, Noda R, Qiu H H, Shyy W. Aerodynamic performance of a free-flying dragonfly — A span-resolved investigation. Physics of Fluids, 2020, 32, 041903.
Usherwood J R, Lehmann F O. Phasing of dragonfly wings can improve aerodynamic efficiency by removing swirl. Journal of the Royal Society Interface, 2008, 5, 1303–1307.
Padfield G D. Helicopter Flight Dynamics. John Wiley & Sons, Chichester, UK, 2018.
Van Buren T, Floryan D, Brunner D, Senturk U, Smits A J. Impact of trailing edge shape on the wake and propulsive performance of pitching panels. Physical Review Fluids, 2017, 2, 014702.
Acknowledgment
This work was supported by the Research Grants Council (RGC) of the Government of the Hong Kong Special Administrative Region (HKSAR) with Project No. 16205018. The authors would like to thank Ka Ip Justin Edmund SUN for his valuable contribution in helping to conduct the experiments.
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Liu, X., Hefler, C., Shyy, W. et al. The Importance of Flapping Kinematic Parameters in the Facilitation of the Different Flight Modes of Dragonflies. J Bionic Eng 18, 419–427 (2021). https://doi.org/10.1007/s42235-021-0020-4
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DOI: https://doi.org/10.1007/s42235-021-0020-4