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Numerical Study of Four-Vortex Aircraft Wakes

Stumpf, E. (2002) Numerical Study of Four-Vortex Aircraft Wakes. 13. DGLR-Fachsymposium der AG STAB 2002, München (de), 12.-14.11.2002.

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Abstract

Instabilities evolving on simplified vortex wakes, built up by two pairs of counter-rotating vortices, are investigated numerically. Two configurations are considered: the first circulation and spacing ratio corresponding to a wide-body airliner in landing configuration and a modified set-up with a strong inner vortex pair. The investigation shows that a strong inner pair is necessary for the instability to cause a large increase of vortex radii of the outer vortex pair. This increase in turn leads to a rapid decay of rolling moment.

Document Type:Conference or Workshop Item (Speech)
Additional Information: LIDO-Berichtsjahr=2003,
Title:Numerical Study of Four-Vortex Aircraft Wakes
Authors:
AuthorsInstitution or Email of Authors
Stumpf, E.UNSPECIFIED
Date:2002
Status:Published
Keywords:wake vortex, instability 4-vortex system
Event Title:13. DGLR-Fachsymposium der AG STAB 2002, München (de), 12.-14.11.2002
Organizer:DGLR
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Low-Emission Air Traffic (old)
Location: Köln-Porz , Braunschweig , Göttingen
Institutes and Institutions:Institute of Aerodynamics and Flow Technology
Deposited By: Claudia Grant
Deposited On:31 Jan 2006
Last Modified:14 Jan 2010 19:07

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