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Retrospective and Recent Examples of Aircraft and Rotorcraft System Identification at DLR

Deiler, Christoph and Mönnich, Wulf and Seher-Weiß, Susanne and Wartmann, Johannes (2023) Retrospective and Recent Examples of Aircraft and Rotorcraft System Identification at DLR. Journal of Aircraft. American Institute of Aeronautics and Astronautics (AIAA). doi: 10.2514/1.C037262. ISSN 0021-8669.

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Official URL: https://arc.aiaa.org/doi/full/10.2514/1.C037262


Aircraft system identification has a five-decades-long tradition at German Aerospace Center (DLR). Over the last two decades, the research covered various topics related to system identification of fixed- and rotary-wing aircraft, nonconventional applications and atmospheric effects, the development of new flight-test procedures for system identification purposes, and specific aircraft model enhancements and corresponding parameter estimation. Comprehensive tools were developed that support this research and can be applied to a variety of different problems and types of vehicles. The paper starts with a short description of the different system identification methods used at DLR and the corresponding tools. The discussion of flight-test procedures and maneuver design as well as sensor fusion and flight-path reconstruction provides information on how to optimize the flight tests for system identification and to arrive at a consistent flight-test database. The examples for fixed-wing aircraft provide information on identification including abnormal conditions such as icing and interaction with atmospheric disturbances as well as modeling of structural mechanics and loads. The identification of high-order rotorcraft models that account for rotor and engine dynamics and even structural modes is discussed, and the identification of rotor mast moments as well as the identification of non-physics-based models and their integration into physics-based models are also covered. A final section shows that system identification can also be used to derive models for gyroplanes and parachutes as well as to derive control equivalent turbulence input models and to estimate complex wind field geometries. Thus, a broad overview of possible applications of system identification is given.

Item URL in elib:https://elib.dlr.de/195425/
Document Type:Article
Title:Retrospective and Recent Examples of Aircraft and Rotorcraft System Identification at DLR
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Deiler, ChristophUNSPECIFIEDhttps://orcid.org/0000-0002-7143-2631UNSPECIFIED
Seher-Weiß, SusanneUNSPECIFIEDhttps://orcid.org/0000-0002-6913-7764139267598
Wartmann, JohannesUNSPECIFIEDhttps://orcid.org/0000-0002-9766-3454139267599
Date:9 June 2023
Journal or Publication Title:Journal of Aircraft
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Publisher:American Institute of Aeronautics and Astronautics (AIAA)
Keywords:Rotorcraft Simulations, Flight Test Instrumentation, Sensor Fusion, Fixed Wing Aircraft, Structural Mechanics, System Identification, Aircraft Model Identification, Rotary-Wing Aircraft
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:other
DLR - Research area:Aeronautics
DLR - Program:L - no assignment
DLR - Research theme (Project):L - no assignment
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Flight Dynamics and Simulation
Institute of Flight Systems > Rotorcraft
Institute of Flight Systems
Deposited By: Deiler, Dr. Christoph
Deposited On:25 Jul 2023 11:39
Last Modified:19 Oct 2023 15:02

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