Flow Visualization and Force Measurements on a Hovering Flapping-Wing MAV 'Delfly II"

K.M.E De Clercq, R de Kat, BDW Remes, BW van Oudheusden, H Bijl

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientific

19 Citations (Scopus)

Abstract

Particle image velocimetry measurements and simultaneous force measurements have been performed on the DelFly II flapping-wing MAV, to investigate the flow-field behavior and the aerodynamic forces generated. For flapping wing motion it is expected that both the clap and peel mechanism and the occurrence of a leading edge vortex during the translational phase play an important role in unsteady lift generation. Furthermore, the flexibility of the wing foil is also considered of primary relevance. The PIV analysis shows a strong influx between the wings during the peel but no downward expelling jet during the clap. The force measurements reveal that the peel, oppositely to the clap, contributes significantly to the lift. The PIV visualization suggests the occurrence of a leading edge vortex during the first half of the in- and outstroke, which is supported by a simultaneous augmentation in lift. The early generation of a leading edge vortex during the flex cannot be assessed from the PIV images due to optical obstruction, but is likely to appear since the wing flexing is accompanied with a large increase in lift.
Original languageEnglish
Title of host publicationProceedings of the 39th AIAA Fluid Dynamics Conference, AIAA 2009-4035
Editors J. Johnson
Place of PublicationTexas
PublisherAmerican Institute of Aeronautics and Astronautics Inc. (AIAA)
Pages1-6
Number of pages6
ISBN (Print)9781615673520
DOIs
Publication statusPublished - 2009
Event39th AIAA Fluid Dynamics Conference, AIAA 2009-4035 - Texas
Duration: 22 Jun 200925 Jun 2009

Publication series

Name
PublisherAIAA

Conference

Conference39th AIAA Fluid Dynamics Conference, AIAA 2009-4035
Period22/06/0925/06/09

Keywords

  • Conf.proc. > 3 pag

Fingerprint

Dive into the research topics of 'Flow Visualization and Force Measurements on a Hovering Flapping-Wing MAV 'Delfly II"'. Together they form a unique fingerprint.

Cite this