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Integration of Wake Impact Alleviation Control System into Control System Architecture of Modern Fly-by-Wire Aircraft

Schwithal, Jana and Fezans, Nicolas and Niedermeier, Dominik (2019) Integration of Wake Impact Alleviation Control System into Control System Architecture of Modern Fly-by-Wire Aircraft. EuroGNC 2019, 3.-5. April 2019, Milano, Italy.

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Abstract

Wake vortices can represent a serious disturbance for encountering aircraft because they can cause sudden, unexpected aircraft reactions like strong rolling motions. This paper presents a control system, called Online Wake Identification and Impact Alleviation (OWIDIA), which has the particular purpose to alleviate these wake-induced aircraft reactions and is applied in addition to the regular flight control laws of the aircraft. The OWIDIA system uses the information of an airborne forward-looking Doppler lidar sensor about the wake vortex wind velocities in front of the aircraft. On the basis of these measurements, an online wake identification algorithm characterizes a potential wake vortex and a control module determines the control surface deflections that countervail the wake-induced aircraft response. The present paper shows the undesired interactions that can occur when combining the OWIDIA system with the basic control laws of the aircraft and demonstrates how these interactions can be prevented.

Item URL in elib:https://elib.dlr.de/129433/
Document Type:Conference or Workshop Item (Speech)
Title:Integration of Wake Impact Alleviation Control System into Control System Architecture of Modern Fly-by-Wire Aircraft
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Schwithal, JanaJana.Schwithal (at) dlr.dehttps://orcid.org/0000-0003-3554-0560
Fezans, NicolasNicolas.Fezans (at) dlr.dehttps://orcid.org/0000-0003-4351-3474
Niedermeier, DominikDominik.Niedermeier (at) dlr.deUNSPECIFIED
Date:April 2019
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:flight control, wake vortex, wake encounter
Event Title:EuroGNC 2019
Event Location:Milano, Italy
Event Type:international Conference
Event Dates:3.-5. April 2019
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Schwithal, Jana
Deposited On:14 Jan 2020 20:07
Last Modified:14 Jan 2020 20:07

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