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Far field wake vortex evolution of two aircraft formation flight and implications on young contrails

Unterstraßer, Simon und Stephan, Anton (2020) Far field wake vortex evolution of two aircraft formation flight and implications on young contrails. The Aeronautical Journal, 124 (1275), Seiten 667-702. Cambridge University Press. doi: 10.1017/aer.2020.3. ISSN 0001-9240.

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Offizielle URL: https://doi.org/10.1017/aer.2020.3

Kurzfassung

Large-eddy simulations (LES) have been employed to investigate the far-field four-vortex wake vortex evolution over 10min behind an aircraft formation. In formation flight scenarios, the wake vortex behaviour was found to be much more complex, chaotic and also diverse than in the classical single aircraft case, depending very sensitively on the formation geometry, i.e. the lateral and vertical offset of the two involved aircraft. Even though the case-by-case variability of the wake vortex behaviour across the various formation flight scenarios is large, the final plume dimensions after vortex dissolution are in general substantially different from those of single aircraft scenarios. The plumes are around 170 to 250m deep and 400m to 680m broad, whereas a single A350/B777 aircraft would produce a 480m deep and 330m broad plume. Formation flight plumes are thus not as deep, yet they are broader, as the vortices do not only propagate vertically but also in span-wise direction. Two different LES models have been employed independently and show consistent results suggesting the robustness of the findings. Notably, C02 emissions are only one contribution to the aviation climate impact among several others like contrails and emission of water vapour and nitrogen oxides, which would be all affected by the implementation of formation flight. Thus, we also highlight the differences in ice microphysical and geometrical properties of young formation flight contrails relative to the classical single aircraft case.

elib-URL des Eintrags:https://elib.dlr.de/134917/
Dokumentart:Zeitschriftenbeitrag
Titel:Far field wake vortex evolution of two aircraft formation flight and implications on young contrails
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Unterstraßer, SimonDLR, IPAhttps://orcid.org/0000-0003-3772-3678NICHT SPEZIFIZIERT
Stephan, AntonDLR, IPANICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:2020
Erschienen in:The Aeronautical Journal
Referierte Publikation:Ja
Open Access:Ja
Gold Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:124
DOI:10.1017/aer.2020.3
Seitenbereich:Seiten 667-702
Verlag:Cambridge University Press
ISSN:0001-9240
Status:veröffentlicht
Stichwörter:formation flight, wake vortex, green aviation, large-eddy simulation, Lagrangian ice microphysics, contrail,
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:Luftverkehrsmanagement und Flugbetrieb
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Air Traffic Management and Operation
DLR - Teilgebiet (Projekt, Vorhaben):L - Klima, Wetter und Umwelt (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Verkehrsmeteorologie
Hinterlegt von: Unterstraßer, Dr. Simon
Hinterlegt am:15 Mai 2020 15:34
Letzte Änderung:24 Okt 2023 10:50

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