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Aircraft Wake-Vortex Evolution in Ground Proximity: Analysis and Parameterization

Holzäpfel, Frank and Steen, Meiko (2006) Aircraft Wake-Vortex Evolution in Ground Proximity: Analysis and Parameterization. 44th AIAA Aerospace Sciences Meeting and Exhibit, 2006-01-09 - 2006-01-12, Reno, NV (USA).

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Field measurement data of 282 wake vortex pairs and respective environmental conditions acquired at Frankfurt Airport by means of lidar, Sodar/RASS, and ultrasonic anemometer are used to analyze wake vortex behavior in ground proximity. The impact of turbulence and crosswind on wake vortex decay proves to be weak, whereas already light crosswind turns out to be sufficient to cause pronounced asymmetric rebound characteristics. Particular cases with strong rebounds caused by detached shear layers and obstacles are discussed. Estimates of the time needed to clear the runway from wake vortices by advection are provided. Vortex decay and rebound characteristics are parameterized and implemented into the probabilistic two-phase aircraft wake-vortex model (P2P). Deterministic and probabilistic prediction skill of P2P are assessed. Comparison to wake predictions out of ground effect indicates that in ground effect (i) the rapid-decay phase progresses slower, (ii) wake vortex evolution can be predicted with improved accuracy, and (iii) fair prediction skill requires only limited environmental data.

Document Type:Conference or Workshop Item (Speech)
Additional Information:AIAA Paper 2006-1077
Title:Aircraft Wake-Vortex Evolution in Ground Proximity: Analysis and Parameterization
AuthorsInstitution or Email of Authors
Holzäpfel, FrankDLR, IPA
Steen, MeikoDLR, IPA
Date:January 2006
Refereed publication:No
In ISI Web of Science:No
Page Range:pp. 1-16
Series Name:Atmospheric and Space Environments
Keywords:wake vortex, ground proximity, real-time prediction
Event Title:44th AIAA Aerospace Sciences Meeting and Exhibit
Event Location:Reno, NV (USA)
Event Type:international Conference
Event Dates:2006-01-09 - 2006-01-12
HGF - Research field:Aeronautics, Space and Transport
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 - Wake Vortices (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Cloud Physics and Traffic Meteorology
Deposited By: Dr.-Ing. Frank Holzäpfel
Deposited On:19 Dec 2005
Last Modified:26 Oct 2015 07:59

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