NDLI: Recent enhancements to the development of cfd-based aeroelastic reduced-order models

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Recent enhancements to the development of cfd-based aeroelastic reduced-order models

Content Provider	NASA Technical Reports Server (NTRS)
Author	Silva, Walter A.
Copyright Year	2007
Description	Recent enhancements to the development of CFD-based unsteady aerodynamic and aeroelastic reduced-order models (ROMs) are presented. These enhancements include the simultaneous application of structural modes as CFD input, static aeroelastic analysis using a ROM, and matched-point solutions using a ROM. The simultaneous application of structural modes as CFD input enables the computation of the unsteady aerodynamic state-space matrices with a single CFD execution, independent of the number of structural modes. The responses obtained from a simultaneous excitation of the CFD-based unsteady aerodynamic system are processed using system identification techniques in order to generate an unsteady aerodynamic state-space ROM. Once the unsteady aerodynamic state-space ROM is generated, a method for computing the static aeroelastic response using this unsteady aerodynamic ROM and a state-space model of the structure, is presented. Finally, a method is presented that enables the computation of matchedpoint solutions using a single ROM that is applicable over a range of dynamic pressures and velocities for a given Mach number. These enhancements represent a significant advancement of unsteady aerodynamic and aeroelastic ROM technology.
File Size	2524275
Page Count	11
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20070018340
Archival Resource Key	ark:/13960/t3hx69s0w
Language	English
Publisher Date	2007-01-01
Access Restriction	Open
Subject Keyword	Fluid Mechanics And Thermodynamics Dynamic Structural Analysis Algorithms Computational Fluid Dynamics Semispan Models Mathematical Models System Identification Aeroelasticity Aircraft Configurations Dynamical Systems Aeroelastic Research Wings Mach Number Dynamic Pressure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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