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Aerodynamic Modeling and System Identification from Flight Data - Recent Applications at DLR

Jategaonkar, Ravindra (2003) Aerodynamic Modeling and System Identification from Flight Data - Recent Applications at DLR. In: DINCON-2003; 2nd DLR-ITA/CTA Workshop on "Data Analysis and Flight Control". DINCON-2003, 2003-08-18 2003-08-21, ITA/CTA, San Jose dos Campos, Brazil.

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This paper provides an overview of a few selected system identification activities carried out during the last decade at DLR, the German Aerospace Center. After a brief account of parameter estimation methods and of consistency checking of recorded flight data, an emphasis is placed on: i) development of global, high-fidelity aerodynamic databases for training simulators, ii) models for in-flight simulator iii) modeling of stall hysteresis, iv) estimation of aerodynamic flow field characteristics and validation of aircraft reaction models from wake vortex encounter flights, and v) a parametric wake distortion model to improve helicopter coupling off-axis response. These examples cover a variety of flight vehicles with widely different characteristics, namely the military transport aircraft Transall C-160, commuter aircraft Dornier 328, in-flight simulator VFW-614 ATTAS, high altitude research aircraft G850 Strato 2C, Airbus type aircraft, fly-by-wire helicopter BO-105, and fly-by-light helicopter EC-135. Besides parameter estimation aspects, those related to model validation are discussed. Through succinct examples, it is brought out that system identification has become an indispensable tool to support not only research but also industry activities in various key areas such as model validation, handling qualities evaluation, control law design, and flight vehicle design and certification. Thus, it contributes significantly to risk and cost reduction.

Item URL in elib:https://elib.dlr.de/52553/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:Aerodynamic Modeling and System Identification from Flight Data - Recent Applications at DLR
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Date:18 August 2003
Journal or Publication Title:DINCON-2003; 2nd DLR-ITA/CTA Workshop on "Data Analysis and Flight Control"
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:System identification, parameter estimation, aerodynamic modeling
Event Title:DINCON-2003
Event Location:ITA/CTA, San Jose dos Campos, Brazil
Event Type:international Conference
Event Dates:2003-08-18 2003-08-21
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems & Cabin (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > System Automation
Deposited By: Jategaonkar, Dr.phil. Ravindra
Deposited On:10 Jan 2008
Last Modified:27 Apr 2009 14:36

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