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Rapid Aerodynamic Parameter Identification on a Large Transport Aircraft

Raab, Christian (2014) Rapid Aerodynamic Parameter Identification on a Large Transport Aircraft. In: AIAA Atmospheric Flight Mechanics Conference (ISSN: 0021-8669). AIAA SCITECH 2014, Atmospheric Flight Mechanics Conference, 13.-17. Jan. 2014, National Harbor, Maryland, USA. ISSN 0021-8669

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Official URL: http://arc.aiaa.org/doi/pdf/10.2514/6.2014-0730


Flight testing of new aircraft designs is a challenging task in terms of time and costs. Tests have to be conducted in a careful and controlled manner, as flight characteristics may not be known exactly in all parts of the envelope. Rapid identification of the aerodynamic properties in-flight could help to detect any discrepancies to model predictions at an early stage and make flight testing safer. This paper introduces a software tool called RAPIT which identifies aerodynamic parameters during flight. It is based on an existing frequency domain parameter identification method using recursive Fourier transformation. After extensive ground testing, RAPIT was installed on board of an Airbus A320 research aircraft and flight tests with excitation maneuvers were conducted. Only the standard A320 flight test instrumentation was used for the parameter identification. The identification process was monitored on a laptop display which allowed optimizing the maneuvers. Comparison of the identified aerodynamic parameters with values derived from a model based on a-priori information showed good agreement and demonstrated the successful application of rapid stability and control parameter identification to a modern large transport aircraft.

Item URL in elib:https://elib.dlr.de/87807/
Document Type:Conference or Workshop Item (Speech)
Title:Rapid Aerodynamic Parameter Identification on a Large Transport Aircraft
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Raab, Christianchristian.raab (at) dlr.deUNSPECIFIED
Date:13 January 2014
Journal or Publication Title:AIAA Atmospheric Flight Mechanics Conference (ISSN: 0021-8669)
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
Keywords:flight test, A320, ATRA, aerodynamic, parameter estimation, system identification, frequency domain, Fourier transformation
Event Title:AIAA SCITECH 2014, Atmospheric Flight Mechanics Conference
Event Location:National Harbor, Maryland, USA
Event Type:international Conference
Event Dates:13.-17. Jan. 2014
Organizer:American Institute of Aeronautics and Astronautics
HGF - Research field:Aeronautics, Space and Transport
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 > Flight Dynamics and Simulation
Deposited By: Raab, Dipl.-Ing. Christian
Deposited On:29 Jan 2014 11:21
Last Modified:09 Feb 2017 19:20

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