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Time-Domain System Identification of Rigid-Body Multipoint Loads Model

Preisighe Viana, Marcus Vinicius (2016) Time-Domain System Identification of Rigid-Body Multipoint Loads Model. American Institute of Aeronautics and Astronautics (AIAA) - Atmospheric Flight Mechanics Conference (AFM) - AVIATION 2016, 13.-17. Jun. 2016, Washington, D.C., USA.

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Abstract

Loads monitoring is of central interest for both aircraft manufacturers and operators. The proper monitoring approach can represent the success or failure of a new aircraft design as well as the economic growth of air carriers. This paper introduces the development of a rigid-body multipoint loads model based on flight test data using System-Identification in time domain. Several strain sensors were calibrated to enable local loads measurements. Direct loads measurements at different positions of the aircraft structure were used to extend the typical set of observation variables, in order to enable the prediction of local aerodynamic loads by this model. For this purpose specific flight test maneuvers covering low frequency inputs at different airspeeds were performed. The test platform is a high-performance sailplane equipped with special flight test instrumentation, in order to allow the modeling of the multipoint loads model at several aircraft load stations. The main contribution of this work is the extension of the conventional System-Identification approach for enabling the simulation of local loads in real time. In this context, the multipoint model structure is outlined and a host of results from the identification of a rigid-body seven-point loads model is presented.

Item URL in elib:https://elib.dlr.de/105871/
Document Type:Conference or Workshop Item (Speech)
Title:Time-Domain System Identification of Rigid-Body Multipoint Loads Model
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Preisighe Viana, Marcus Viniciusmarcus.preisigheviana (at) dlr.deUNSPECIFIED
Date:17 June 2016
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:system identification, rigid-body model, local loads measurements, multipoint loads model, strain gauges, flight test, flexible aircraft, structural health monitoring (SHM), loads monitoring, sensor calibration, load station, real time simulation.
Event Title:American Institute of Aeronautics and Astronautics (AIAA) - Atmospheric Flight Mechanics Conference (AFM) - AVIATION 2016
Event Location:Washington, D.C., USA
Event Type:international Conference
Event Dates:13.-17. Jun. 2016
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 - Structures and Materials, L - Simulation and Validation
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Preisighe Viana, Marcus Vinicius
Deposited On:18 Oct 2016 15:00
Last Modified:31 Jul 2019 20:03

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