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How plate lines influence the hazard perception of pilots during wake encounters

Vechtel, Dennis and Stephan, Anton and Holzäpfel, Frank (2020) How plate lines influence the hazard perception of pilots during wake encounters. Journal of Aircraft, 57 (2), pp. 360-367. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C035689. ISSN 0021-8669.

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Official URL: https://arc.aiaa.org/doi/full/10.2514/1.C035689


In free air aircraft wake vortices descend due to their mutually induced velocities. In ground proximity, however, they are hindered to descent, which increases the encounter risk significantly. Recent investigations showed that vortex decay in ground proximity can be accelerated by installing a series of plates in lines perpendicular to the flight direction in front of the runway (so-called plate lines). A previous encounter simulation study showed that the accelerated vortex decay due to the presence of a plate line leads to a reduced aircraft response during wake encounters with autopilot engaged. The present study analyses whether the plate lines also have a positive influence on the subjective hazard perception of pilots. Flow fields generated by coupled RANS-LES simulations of an A340-sized aircraft in ground effect with light crosswind with and without plate lines were implemented in a full-flight simulator of an A320-sized aircraft for different vortex ages. Simulations with pilots-in-the-loop also show a reduction of the aircraft response during manual landings as well as improved subjective pilot acceptance. Plate lines are therefore considered an effective means for either increasing flight safety with current minimum separations or maintaining the same level of safety in case of reduced minimum separations.

Item URL in elib:https://elib.dlr.de/131572/
Document Type:Article
Title:How plate lines influence the hazard perception of pilots during wake encounters
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Holzäpfel, FrankDLR, IPAhttps://orcid.org/0000-0003-3182-1832UNSPECIFIED
Date:March 2020
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:pp. 360-367
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:plate lines, hazard perception of pilots, wake encounters
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:air traffic management and operations
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment (old)
Location: Braunschweig , Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Institute of Flight Systems
Deposited By: Stephan, Anton
Deposited On:28 Nov 2019 16:25
Last Modified:24 Oct 2023 14:40

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