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Wake Vortex Encounter Assessment

Hahn, Klaus-Uwe and Höhne, Gordon and Schwarz, Carsten Walter (2006) Wake Vortex Encounter Assessment. [Other]

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Official URL: http://wwwe.onecert.fr/projets/WakeNet2-Europe

Abstract

From wake vortex velocity distribution models the velocity field induced by vortices can be quantified. The effect on a following aircraft that flies into this field ('encounters the wake vortex') can then be derived from flight mechanical calculations in an offline simulation or from flight simulator studies with a pilot-in-the-loop. Extensive studies have been made in the European S-Wake program and during the development of the VESA program of Airbus. The wake vortex velocity field models and the aerodynamic interaction models (AIM) used in these studies have been validated against wind tunnel and flight tests. Even with the present separation rules, wake vortex encounters may occur during normal operation and pose a potential hazard. For a quantitative risk assessment it is essential to have severity criteria that relate objective aircraft parameters to the subjective pilot's assessment of a wake vortex encounter (based on extensive pilot-in-the-loop wake vortex encounter severity investigations). Although relevant parameters have been proposed (e.g. a maximum roll angle or sink rate) a set of agreed criteria has not been established yet. Also, automatic detection of wake encounters will be very valuable to assess the present situation and to validate the severity criteria for weak encounters.

Document Type:Other
Title:Wake Vortex Encounter Assessment
Authors:
AuthorsInstitution or Email of Authors
Hahn, Klaus-UweUNSPECIFIED
Höhne, GordonAirbus
Schwarz, Carsten WalterUNSPECIFIED
Date:April 2006
Journal or Publication Title:Wake Vortex Research Needs for "Improved Wake Vortex Separation Ruling" and "Reduced Wake Signatures"
Volume:Part II Specialist's Reports
Page Range:pp. 43-55
Editors:
EditorsEmail
Elsenaar, BramUNSPECIFIED
Status:Published
Keywords:Wake Vortex Encounter, Wake Vortex Encounter Assessment
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:L VU - Air Traffic and Environment (old)
DLR - Research area:Aeronautics
DLR - Program:L VU - Air Traffic and Environment
DLR - Research theme (Project):L - Wake Vortices (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Aircraft
Deposited By: Carsten Walter Schwarz
Deposited On:24 May 2006
Last Modified:27 Apr 2009 12:54

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