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Simulation Study of Severity and Mitigation of Wake-Vortex Encounters in Ground Proximity

Vechtel, Dennis und Stephan, Anton und Holzäpfel, Frank (2017) Simulation Study of Severity and Mitigation of Wake-Vortex Encounters in Ground Proximity. Journal of Aircraft, 54 (5), Seiten 1802-1813. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C033995. ISSN 0021-8669.

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Offizielle URL: https://arc.aiaa.org/doi/10.2514/1.C033995

Kurzfassung

Wake-vortex encounter reports as well as simulations show a significantly higher encounter probability during landing shortly before touchdown in comparison to other flight phases. This is caused, among other factors, by the special behavior of wake vortices in ground effect. Nevertheless, hazardous wake encounters with adverse consequences are rarely reported in reality. To gain more insight in the mechanisms of wake encounters close to ground, encounter simulations were performed with realistic vortex flowfields. These were generated using coupled Reynolds-averaged Navier–Stokes and large-eddy simulations covering the whole vortex evolution in ground effect from generation until decay and were used for a hazard analysis. Encounter simulations were performed with a simulation model of an A320-size aircraft with autopilot engaged following an A340-size aircraft. Different wind conditions and vortex ages were considered as well as a so-called plate line. Recent studies showed increased vortex decay when a series of plates is positioned in front of the runway threshold. The results of the study reveal a significant reduction of the maximal vortex impact on the encountering aircraft due to the plate line. This effect is more pronounced for younger vortices, but also for operationally relevant vortex ages, a considerable effect of the plate lines in reducing the maximum aircraft reaction due to a wake encounter close to ground can be observed.

elib-URL des Eintrags:https://elib.dlr.de/112653/
Dokumentart:Zeitschriftenbeitrag
Titel:Simulation Study of Severity and Mitigation of Wake-Vortex Encounters in Ground Proximity
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Vechtel, DennisDLR, IFTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Stephan, AntonDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Holzäpfel, FrankDLR, IPAhttps://orcid.org/0000-0003-3182-1832NICHT SPEZIFIZIERT
Datum:Mai 2017
Erschienen in:Journal of Aircraft
Referierte Publikation:Ja
Open Access:Nein
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:54
DOI:10.2514/1.C033995
Seitenbereich:Seiten 1802-1813
Verlag:American Institute of Aeronautics and Astronautics (AIAA)
ISSN:0021-8669
Status:veröffentlicht
Stichwörter:Wake Vortex, Ground Effect, Flight Simulation, Hazard Analysis
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Flugzeuge
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AR - Aircraft Research
DLR - Teilgebiet (Projekt, Vorhaben):L - Systeme und Kabine (alt)
Standort: Braunschweig , Oberpfaffenhofen
Institute & Einrichtungen:Institut für Flugsystemtechnik > Flugdynamik und Simulation
Institut für Physik der Atmosphäre > Verkehrsmeteorologie
Hinterlegt von: Vechtel, Dennis
Hinterlegt am:12 Jun 2017 17:54
Letzte Änderung:02 Nov 2023 14:39

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