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Interpolation of GVT Results using Volume-Spline Method

Schwochow, Jan (2010) Interpolation of GVT Results using Volume-Spline Method. Project Report. VZLU - Vyzkumny a zkusebni letecky ustav.

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For the flutter analysis it is demanding that the deformation of mode shapes is transferred to the aerodynamic grid to analyse unsteady aerodynamic loads induced by the oscillation. If the analysis is based on measurements, the available information of deflections is limited to the applied transducers which will generally measure the acceleration in one translation direction. In general about 100 sensors are applied for small two and four seated aircrafts and gliders and about 200 are used for aircrafts in the CS23 category. For the interpolation of the measured acceleration amplitudes it was assumed that each wing section is rigid in the flow direction. For span-wise interpolation one dimensional cubic splines are applied for each aircraft component to analyze the varying bending, in-plane bending and torsion from root to tip. As the sensors can only measure translational accelerations the twist of the lifting surfaces must be calculated from amplitude differences at leading edge, trailing edge and hinge line, respectively. In addition the deflection angles of control faces with respect to the wing are calculated.

Item URL in elib:https://elib.dlr.de/84269/
Document Type:Monograph (Project Report)
Additional Information:EU-Projekt CESAR - Cost-Effective Small AiRcraft Contract no: AIP5-CT-2006-030888
Title:Interpolation of GVT Results using Volume-Spline Method
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Date:2 February 2010
Journal or Publication Title:CESAR - Final Report on Optimized Analytical and Experimental Approaches and Improved Methods for Reliable and Fast Prediction of Aeroelastic Stability
Refereed publication:No
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Keywords:Volume Spline Method, GVT, Doublet Lattice Method
Institution:VZLU - Vyzkumny a zkusebni letecky ustav
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 - Structures & Materials (old)
Location: Göttingen
Institutes and Institutions:Institute of Aeroelasticity > Structural Dynamics and System Identification
Deposited By: Schwochow, Jan
Deposited On:25 Sep 2013 15:41
Last Modified:25 Sep 2013 15:41

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