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Online Monitoring of Aircraft Modal Parameters during Flight Test based on permanent Output-only Modal Analysis

Jelicic, G. and Schwochow, Jan and Govers, Yves and Sinske, Julian and Buchbach, Ralf and Springer, Julian (2017) Online Monitoring of Aircraft Modal Parameters during Flight Test based on permanent Output-only Modal Analysis. In: 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference. AIAA SciTech 2017, 09.-13. Jan. 2017, Grapevine, Texas, USA. DOI: 10.2514/6.2017-1825

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Abstract

The process adopted for continuous monitoring of eigenfrequencies and damping ratios during the test flight of a research aircraft is presented. This comprises measurement hardware, distributed data acquisition system and software architecture in order to stream, store, and simultaneously analyze data with the methods of Operational Modal Analysis. The algorithms utilize only measured output time histories to identify modal parameters at different flight conditions. The autonomous implementations of the Stochastic Subspace Identification (SSI) and the Least-Square Complex Frequency domain (LSCF) algorithms provide estimations of the aeroelastic damping within a few seconds.

Item URL in elib:https://elib.dlr.de/115967/
Document Type:Conference or Workshop Item (Speech)
Title:Online Monitoring of Aircraft Modal Parameters during Flight Test based on permanent Output-only Modal Analysis
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Jelicic, G.goran.jelicic (at) dlr.dehttps://orcid.org/0000-0001-5091-6699
Schwochow, Janjan.schwochow (at) dlr.dehttps://orcid.org/0000-0002-5430-8479
Govers, Yvesyves.govers (at) dlr.dehttps://orcid.org/0000-0003-2236-596X
Sinske, Julianjulian.sinske (at) dlr.dehttps://orcid.org/0000-0002-6080-9982
Buchbach, Ralfralf.buchbach (at) dlr.dehttps://orcid.org/0000-0003-3417-997X
Springer, Julianjulian.springer (at) dlr.dehttps://orcid.org/0000-0002-0795-8786
Date:2017
Journal or Publication Title:58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
DOI :10.2514/6.2017-1825
Status:Published
Keywords:online monitoring, aircraft modal parameters, flight test, output-only modal analysis
Event Title:AIAA SciTech 2017
Event Location:Grapevine, Texas, USA
Event Type:international Conference
Event Dates:09.-13. Jan. 2017
Organizer:American Institute of Aeronautics and Astronautics (AIAA)
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 - Flight Physics
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Grischke, Birgid
Deposited On:14 Dec 2017 14:59
Last Modified:14 Dec 2017 14:59

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