Abstract
The knowledge of wing orientation and deformation during flapping flight is necessary for a complete aerodynamic analysis, but to date those kinematic features have not been simultaneously quantified for free-flying insects. A projected comb-fringe (PCF) method has been developed for measuring spanwise camber changes on free-flying dragonflies and on beating-flying dragonflies through the course of a wingbeat, which bases on projecting a fringe pattern over the whole measurement area and then measuring the wing deformation from the distorted fringe pattern. Experimental results demonstrate substantial camber changes both along the wingspan and through the course of a wingbeat. The ratio of camber deformation to chord length for hind wing is up to 0.11 at 75% spanwise with a flapping angle of − 0. 66 degree for a free-flying dragonfly.
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References
Azuma A, Watanabe T. Flight performance of a dragonfly. Journal of Experimental Biology, 1988, 137: 221–252.
Dudley R, Ellington C P. Mechanics of forward flight in bumblebees I. Kinematics and morphology. Journal of Experimental Biology, 1990, 148: 19–52.
Ellington C P, Berg C V D, Willmott A P, Thomas A L R. Leading-edge vortices in insect flight. Nature, 1996, 384: 626–630.
Dickinson M H, Gotz K G. Wing rotation and the aerodynamic basis of insect flight. Science, 1999, 284: 1954–1960
Willmott A P, Ellington C P. Measuring the angle of attack of beating insect wings: robust three-dimensional reconstruction from two-dimensional images. Journal of Experimental Biology, 1997, 200: 2693–2704.
Willmott A P, Ellington C P. The mechanics of flight in the hawkmoth manduca sexta (I. Kinematics of hovering and forward flight). The Journal of Experimental Biology, 1997, 200: 2705–2722.
Zeng L J, Matsumoto H, Kawachi K. A fringe shadow method for measuring flapping angle and torsional angle of a dragonfly wing. Measurement Science and Technology, 1996, 7: 776–781.
Zeng L J, Hao Q, Kawachi K. A scanning projected line method for measuring a beating bumblebee wing. Optics Communications, 2000, 183: 37–43.
Song D Q, Wang H, Zeng L J, Yin C Y. Measuring the camber deformation of a dragonfly wing using projected comb-fringe. Review of Science Instruments, 2001, 72: 2450–2454.
Dudley R. The Biomechanics of insect flight: form, function, evolution. Princeton: Princeton University Press, 2000: 476.
Liu H, Kawachi K. A numerical study of insect flight. Journal of Computational Physics, 1998, 146: 124–156
Lan S L, Sun M. Aerodynamic force and flow structure of two airfoils in flapping motions. Acta Mechanica Sinica, 2001, 17(4), in press.
Wakeling J M, Ellington C P. Dragonfly flight II. Velocities, accelerations and kinematics of flapping flight. Journal of Experimental Biology, 1997, 200: 557–568.
Wakeling J M, Ellington C P. Dragonfly flight III. Lift and power requirements. Journal of Experimental Biology, 1997, 200: 583–600.
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Song, D., Zeng, L. Measurement on Camber Deformation of Wings of Free-flying Dragonflies and Beating-flying Dragonflies. J Bionic Eng 1, 41–45 (2004). https://doi.org/10.1007/BF03399452
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DOI: https://doi.org/10.1007/BF03399452