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Kapitel 6.2 Safety Assessment

Speijker, Lennaert and Van der Geest, Peter and Holzäpfel, Frank and Schwarz, Carsten and Kauertz, Sebastian and Reinke, Andreas (2015) Kapitel 6.2 Safety Assessment. Project Report. 10.17874/BFAEB7154B0, 12 S.

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Abstract

All efforts addressing the safety of flight operations with regard to wake vortex encounter (e.g. wake warning systems) or aiming at increasing the capacity of the air transport system by adjusting wake turbulence separations (e.g. new separation schemes) ultimately aim at reducing the risk of severe wake encounters or must assure that the level of risk is not increased. It is the task of dedicated safety assessments to validate that this risk is either reduced or kept at current levels. Those risk-based safety assessments that consider the possibility of unintentional wake encounter must determine the probability (i.e. frequency) of wake vortex encounters and their associated severity level. Severity assessments concern the determination of the severity of a specified wake vortex encounter. Within such assessments severity criteria correlate objective, measurable quantities with severity descriptions of more general nature and stakeholder-wide understanding. Safety assessments may differ in depth. The most detailed assessments include models of air traffic, weather, wake vortex transport and decay as well as dynamic wake encounter simulations to determine frequency and severity of wake encounters on a statistical basis. Experience shows that a common definition of applicable severity criteria is especially difficult to achieve. This difficulty is due to the fact that many different stakeholders are directly concerned (basically answering the question: “which wake encounter is acceptable?”) but that they have different perspectives, experiences and requirements. While an airline might already be concerned about the number of encounters affecting passenger comfort, a regulator is more likely to be concerned only about encounters leading to incidents.

Item URL in elib:https://elib.dlr.de/100329/
Document Type:Monograph (Project Report)
Title:Kapitel 6.2 Safety Assessment
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Speijker, LennaertNational Aerospace Laboratory NLR, Amsterdam, NLUNSPECIFIED
Van der Geest, PeterNationaal Lucht- en RuimtevaartlaboratoriumUNSPECIFIED
Holzäpfel, FrankDLR, IPAUNSPECIFIED
Schwarz, CarstenFT-FSUNSPECIFIED
Kauertz, SebastianAirbus, Toulouse, FUNSPECIFIED
Reinke, AndreasAirbus, Toulouse, FUNSPECIFIED
Date:2015
Journal or Publication Title:online
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Number of Pages:12
Editors:
EditorsEmail
Holzäpfel, FrankDLR, IPA
Reinke, Andreasandreas.a.reinke@airbus.com
Schwarz, Carstencarsten.schwarz@dlr.de
Status:Published
Keywords:wake vortices, encounter, risk assessment, safety case, WakeScene
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
Location: Braunschweig , Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Transport Meteorology
Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Ziegele, Brigitte
Deposited On:04 Dec 2015 11:27
Last Modified:31 Jul 2019 19:57

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