C. Lagemann, E.R. Gowree, C. Jagadeesh, E. Talboys, C. Brücker

Amongst birds, peregrine falcons (Falco peregrinus) are well-known for their unique high-speeds during stoop. A combination of time-resolved stereoscopic particle-image velocimetry (TR-SPIV), surface oil flow visualization (SOFV) and large-eddy simulations (LES) is used to analyze the complex flow over life-size models of peregrine falcons. lt is demonstrated that the exceptional manoeuvrability of peregrine falcons during stoop is attributed to vortex dominated flow promoted by their morphology and their wing shapes. Both, experiments and simulations, revealed the presence of vortices emanating from the neck and the dorsal region due to a strong spanwise flow enhancing mixing for a quick reattachment to ensure a fully attached flow over the tail feather. The stronger wing and tail vortices further provide vortex induced lift for pitch and roll control.

Deutscher Luft- und Raumfahrtkongress 2018, Friedrichshafen

Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V., Bonn, 2018

Conference Paper

englisch

21,0 x 29,7 cm, 8 Seiten

urn:nbn:de:101:1-2018102612134104944237

10.25967/480311

Peregrine Falcons, Vortex patterns

Download - Bitte beachten Sie die Nutzungsbedingungen dieses Dokuments: CC BY-NC-ND 4.0OPEN ACCESS

Lagemann, C.; Gowree, E.R.; et al. (2018): Experimental and Numerical Analysis of the Aerodynamics of Peregrine Falcons during Stoop Flight. Deutsche Gesellschaft für Luft- und Raumfahrt - Lilienthal-Oberth e.V.. (Text). https://doi.org/10.25967/480311. urn:nbn:de:101:1-2018102612134104944237.

26.10.2018