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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/ | |||||||||||||||||||||
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| 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: |
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| 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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