Perching Experiment at Low Reynolds Number: Force and PIV Measurements of Rectangular Flat Wing Models in Perching Motion
Abstract
This report comprises aerodynamic measurements of a wing in perching motion carried out with the MAVlab facility at the Institute of Fluid Mechanics of Braunschweig University. In this context, the perching motion is modeled according to the wing motions of birds to rapidly reduce velocity when landing on a small spot i.e. a perch. The here discussed perching motion is defined as a discontinuous pitching of a wing from low starting angles of attack to high final angles. The study was carried out with two rectangular plan shaped flat plate wings performing the perching motion from 0 to 45 angle of attack. Force measurements with an internal balance were taken for combinations of Reynolds numbers and reduced frequencies. 2Dparticle- image-velocimetry of the flow field was carried out for different time stages of one particular combination, where the force measurements indicate changes in the flow field to occur, to understand the complex unsteady aerodynamic response to this motion type.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 10, 2010
- Accession Number
- ADA547981
Entities
People
- Rolf Radespiel