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Recent activities within the aeroservoelasticity branch at the NASA Langley Research CenterThe objective of research in aeroservoelasticity at the NASA Langley Research Center is to enhance the modeling, analysis, and multidisciplinary design methodologies for obtaining multifunction digital control systems for application to flexible flight vehicles. Recent accomplishments are discussed, and a status report on current activities within the Aeroservoelasticity Branch is presented. In the area of modeling, improvements to the Minimum-State Method of approximating unsteady aerodynamics are shown to provide precise, low-order aeroservoelastic models for design and simulation activities. Analytical methods based on Matched Filter Theory and Random Process Theory to provide efficient and direct predictions of the critical gust profile and the time-correlated gust loads for linear structural design considerations are also discussed. Two research projects leading towards improved design methodology are summarized. The first program is developing an integrated structure/control design capability based on hierarchical problem decomposition, multilevel optimization and analytical sensitivities. The second program provides procedures for obtaining low-order, robust digital control laws for aeroelastic applications. In terms of methodology validation and application the current activities associated with the Active Flexible Wing project are reviewed.
Document ID
19900046345
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Noll, Thomas
(NASA Langley Research Center Hampton, VA, United States)
Perry, Boyd, III
(NASA Langley Research Center Hampton, VA, United States)
Gilbert, Michael
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Aircraft Design, Testing And Performance
Meeting Information
Meeting: European Forum on Aeroelasticity and Structural Dynamics
Location: Aachen
Country: Germany
Start Date: April 17, 1989
End Date: April 19, 1989
Sponsors: BMFT, Deutsche Gesellschaft Fuer Luft - und Raumfahrt
Accession Number
90A33400
Distribution Limits
Public
Copyright
Other

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