Wake reconstruction of flapping-wing MAV DelFly II in forward flight

Date

2012-06-03

Author

Perçin, Mustafa
De Baar, J H S
Van Oudheusden, Bas W.
Remes, Bart
Ruijsink, R
De Wagter, C

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Time-resolved velocity field measurements in the wake of the flapping wings of the DelFly II Micro Aerial Vehicle (MAV) in forward flight configuration were obtained by Stereoscopic Particle Image Velocimetry (Stereo-PIV). The PIV measurements were performed at several spanwise planes in the wake of the flapping wings and at a high framing rate to allow a reconstruction of the temporal development of the three dimensional wake structures throughout the flapping cycle. The wake reconstruction was performed by interpolating between the measurement planes through a Kriging interpolation procedure. First, the general wake topology of the DelFly II model is described in conjunction with the behavior of the distinctive flow structures, in particular, tip vortex, trailing edge vortex, and root vortex. Second, the effect of reduced frequency is investigated by changing the flapping frequency. Comparison of the three dimensional wake structures for different cases of reduced frequency reveals major differences in both formation and interaction of vortical structures.

URI

https://hdl.handle.net/11511/73241

Conference Name

International Micro Air Vehicle Conference and Flight Competition (IMAV2012) (3 - 06 Haziran 2012)

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Department of Aerospace Engineering, Conference / Seminar

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Flow Visualization in the Wake of the Flapping-Wing MAV ’DelFly II’ in Forward Flight Perçin, Mustafa; van Oudheusden, Bas W.; Remes, Bart; Ruijsink, R; de Wagter, C (2012-06-25) Time-resolved velocity field measurements in the wake of the flapping wings of the DelFly II Micro Aerial Vehicle (MAV) in forward flight configuration were obtained by Stereoscopic Particle Image Velocimetry (Stereo-PIV). The PIV measurements were performed at several spanwise planes in the wake of the flapping wings and at a high framing rate to allow a reconstruction of the temporal development of the three dimensional wake structures throughout the flapping cycle. The wake reconstruction was performed b...
Vortex Formation and Force Generation Mechanisms of the DelFly II in Hovering Flight Tenaglia, A; Perçin, Mustafa; Van Oudheusden, Bas W.; Deng, Shuanghou; Remes, Bart (2014-08-12) This paper addresses the unsteady aerodynamic mechanisms in the hovering flight of the DelFly II flapping-wing Micro Aerial Vehicle (MAV). Stereoscopic Particle Image Velocimetry (Stereo-PIV) were carried out around the wings at a high framing rate. Thrust-force was measured to investigate the relation between the vortex dynamics and the aerodynamic force generation. The results reveal that the Leading-Edge-Vortex (LEV), as well as the high flexibility of the wings, have a major effect on thrust generation....
Flow Structures Around a Flapping-Wing Micro Air Vehicle Performing a Clap-and-Peel Motion Perçin, Mustafa; Remes, Bart (2017-04-01) The vortical flow structures generated by the flapping wings of the DelFly II micro air vehicle in hovering flight configuration are investigated using particle image velocimetry. Synchronous force measurements are carried out to establish the relation between the unsteady forces and force generation mechanisms: particularly, the leading-edge vortex and the clap-and-peel motion. The formation of conical leading-edge vortices on both wings is revealed, which occurs rapidly at the start of the outstroke as a ...
Force generation and wing deformation characteristics of a flapping-wing micro air vehicle 'DelFly II' in hovering flight Perçin, Mustafa; de Croon, G. C. H. E.; Remes, B. (IOP Publishing, 2016-06-01) The study investigates the aerodynamic performance and the relation between wing deformation and unsteady force generation of a flapping-wing micro air vehicle in hovering flight configuration. Different experiments were performed where fluid forces were acquired with a force sensor, while the three-dimensional wing deformation was measured with a stereo-vision system. In these measurements, time-resolved power consumption and flapping-wing kinematics were also obtained under both in-air and in-vacuum condi...
Flow Visualization around a Flapping-Wing Micro Air Vehicle in Free Flight Using Large-Scale PIV Herrero, Alejandro del Estal; Perçin, Mustafa; Karasek, Matej; van Oudheusden, Bas (2018-12-01) Flow visualizations have been performed on a free flying, flapping-wing micro air vehicle (MAV), using a large-scale particle image velocimetry (PIV) approach. The PIV method involves the use of helium-filled soap bubbles (HFSB) as tracer particles. HFSB scatter light with much higher intensity than regular seeding particles, comparable to that reflected off the flexible flapping wings. This enables flow field visualization to be achieved close to the flapping wings, in contrast to previous PIV experiments ...

Citation Formats

M. Perçin, J. H. S. De Baar, B. W. Van Oudheusden, B. Remes, R. Ruijsink, and C. De Wagter, “Wake reconstruction of flapping-wing MAV DelFly II in forward flight,” presented at the International Micro Air Vehicle Conference and Flight Competition (IMAV2012) (3 - 06 Haziran 2012), Braunschweig, Almanya, 2012, Accessed: 00, 2021. [Online]. Available: https://hdl.handle.net/11511/73241.