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Mode identification and data synthesis of HART II blade deflection data

van der Wall, Berend G. (2007) Mode identification and data synthesis of HART II blade deflection data. DLR-Interner Bericht. DLR-IB 111-2007/28. 50 S.

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HART II blade deflection data are available at discrete radial and azimuthal positions. They contain measurement errors and data gaps. Using least error squares method, predefined mode shapes (depending on the radial coordinate only) each one having a Fourier series as a generalized time dependence are fitted to the data field. After identification of the Fourier series coefficients the quality of the reconstruction is found to be within the measurement error bounds. Using the mode shapes and their Fourier series a reconstruction of the blade motion is possible at any radial position from the blade hinge and at any azimuthal position, which is necessary for code validation or computational fluid dynamics applications.

Item URL in elib:https://elib.dlr.de/49044/
Document Type:Monograph (DLR-Interner Bericht)
Title:Mode identification and data synthesis of HART II blade deflection data
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:22 June 2007
Refereed publication:No
Open Access:No
Number of Pages:50
Keywords:Modal synthesis
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Aeronautics
HGF - Program Themes:Rotorcraft (old)
DLR - Research area:Aeronautics
DLR - Program:L RR - Rotorcraft Research
DLR - Research theme (Project):L - The Active Rotorcraft (old)
Location: Braunschweig
Institutes and Institutions:Institute of Flight Systems > Rotorcraft
Deposited By: van der Wall, Prof. Dr. Berend G.
Deposited On:15 Aug 2007
Last Modified:27 Apr 2009 13:53

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