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Data Gathering and Preliminary Results of the System Identification of a Flexible Aircraft Model

de Oliveira Silva, Bruno Giordano (2011) Data Gathering and Preliminary Results of the System Identification of a Flexible Aircraft Model. AIAA Atmospheric Flight Mechanics Conference, 08.-11. Aug. 2011, Portland, Oregon, USA.

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Abstract

This paper presents the planning and preliminary results of a flight experiment aiming at the identification of an integrated model for the flight dynamics of a flexible aircraft in time domain. The experimental setup is explained in details, focusing on the choice of the appropriate flight test instrumentation and maneuvers. In addition to the usual measurements for flight dynamics identification, an arrangement of accelerometers and strain gauges was mounted on the aircraft structure, in order to provide additional information about the flexible states. Classical maneuvers for system identification are used to excite the rigid-body and aeroelastic modes. A flight test campaign was performed, using the high-performance glider SB 10 and examples of gathered time histories are presented to illustrate the flexibility effects on the aircraft response. Preliminary results of the identification of the longitudinal dynamics coupled with the first wing bending mode are presented, demonstrating the feasibility of using the system identification methodology in time domain to obtain a flexible aircraft model, accounting for the dynamic coupling between rigid-body and structural modes.

Document Type:Conference or Workshop Item (Speech)
Title:Data Gathering and Preliminary Results of the System Identification of a Flexible Aircraft Model
Authors:
AuthorsInstitution or Email of Authors
de Oliveira Silva, Bruno GiordanoFT-FS
Date:August 2011
Status:Published
Keywords:System Identification, Flight Test, Flexible Aircraft
Event Title:AIAA Atmospheric Flight Mechanics Conference
Event Location:Portland, Oregon, USA
Event Type:international Conference
Event Dates:08.-11. Aug. 2011
Organizer:AIAA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Laser Research and Technology
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Deposited By: Tanja Bracke
Deposited On:30 Aug 2011 08:43
Last Modified:30 Aug 2011 08:43

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