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Plate lines to enhance wake vortex decay for reduced separations between landing aircraft

Holzäpfel, Frank and Vechtel, Dennis and Rotshteyn, Grigory and Stephan, Anton (2022) Plate lines to enhance wake vortex decay for reduced separations between landing aircraft. Flow, 2, pp. 1-24. Cambridge University Press. doi: 10.1017/flo.2021.16. ISSN 2633-4259.

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Official URL: https://dx.doi.org/10.1017/flo.2021.16


To mitigate the risk of wake vortex encounters during final approach, so-called plate lines have been developed. Data collected during a six-month measurement campaign at Vienna International Airport is used to assess the potential for reducing minimum aircraft separations facilitated by plate lines during approach and landing following the RECAT-EU methodology for revised wake turbulence categorization. To ensure that no other parameters controlling wake vortex decay bias the analysis, it is verified that wind speed, atmospheric turbulence, thermal stratification, and flight altitude reside in similar ranges with and without the plates. The analysis follows the steps of the RECAT-EU method to generate non-dimensional so-called reasonable worst-case circulation decay curves; one as a reference for nominal operations without plates and one representing the accelerated wake vortex decay brought about by the plate lines. The difference between the two circulation decay curves corresponds to the non-dimensional time-based aircraft separation reduction potential that can be translated into distance-based separation gains. Depending on the particular RECAT-EU category combination, the attained aircraft separation reduction potential ranges between 12% and 15%. Constricting the analysis to wake vortices generated by one aircraft type representing the Upper Heavy RECAT-EU category, the separation reduction potential amounts up to 20%.

Item URL in elib:https://elib.dlr.de/185496/
Document Type:Article
Title:Plate lines to enhance wake vortex decay for reduced separations between landing aircraft
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Holzäpfel, FrankIPA, DLRhttps://orcid.org/0000-0003-3182-1832UNSPECIFIED
Vechtel, DennisUNSPECIFIEDhttps://orcid.org/0000-0003-1681-7333148660535
Date:2 March 2022
Journal or Publication Title:Flow
Refereed publication:Yes
Open Access:Yes
Gold Open Access:Yes
In ISI Web of Science:Yes
Page Range:pp. 1-24
Publisher:Cambridge University Press
Keywords:wake vortices; plate line; aircraft separations; arrivals; RECAT-EU
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Braunschweig , Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Holzäpfel, Dr. habil. Frank
Deposited On:04 Mar 2022 09:45
Last Modified:25 Jan 2024 14:44

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