Flow visualization around a flapping-wing micro air vehicle in free flight

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

2 Downloads (Pure)

Abstract

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 and comparable to that reflected off the flexible flapping wings. This enables flow field visualization to be achieved also close to the flapping wings, in contrast to previous PIV experiments with regular seeding. Unlike previous tethered wind tunnel measurements in which the vehicle is fixed relative to the measurement setup, the MAV now flies through the measurement area. In this way, the experiment captures the actual flow field of the MAV in free flight, allowing the true asymmetric nature of the flow to be appreciated. Measurements were performed for two different orientations of the light sheet with respect to the flight direction. In the first configuration, the light sheet is parallel to the flight direction and visualizes a streamwise plane that intersects the MAV wings at a specific spanwise position. In the second configuration, the illumination plane is normal to the flight direction and visualizes the flow as the MAV passes through the light sheet.
Original languageEnglish
Title of host publicationProceedings 18th International Symposium on Flow Visualization
Subtitle of host publicationZurich, Switzerland, June 26-29, 2018
EditorsThomas Rösgen
PublisherETH Zürich
Number of pages10
DOIs
Publication statusPublished - 2018
EventISFV18: 18th International Symposium on Flow Visualization - Zürich, Switzerland
Duration: 26 Jun 201829 Jun 2018
Conference number: 18
http://www.isfv18.ethz.ch/

Conference

ConferenceISFV18: 18th International Symposium on Flow Visualization
Abbreviated titleISFV18
CountrySwitzerland
CityZürich
Period26/06/1829/06/18
Internet address

Fingerprint Dive into the research topics of 'Flow visualization around a flapping-wing micro air vehicle in free flight'. Together they form a unique fingerprint.

Cite this