Nonlinear modal aeroservoelastic analysis framework for flexible aircraft
File(s)
Accepted version
Author(s)
Wang, Y
wynn, A
Palacios, R
Type
Journal Article
Abstract
A nonlinear formulation in modal coordinates of the equations of motion of a flexible aircraft is presented. It relies on the projection of the intrinsic equations of geometrically nonlinear composite beams on the linear normal modes at a reference condition, which are coupled with two-dimensional unsteady aerodynamics. The resulting description is suitable for nonlinear dynamic analysis and control design, whereas the description in modal coordinates links directly to linear aeroservoelastic analysis methods. Results are presented on and compared to cantilever wings and full aircraft configurations previously studied in the literature. Linear H∞H∞ control synthesis and closed-loop nonlinear simulations are finally explored on a highly flexible flying wing under large-amplitude discrete gusts. Results show the ability of the proposed framework to capture the nonlinear dynamics of the aeroelastic system, while providing a seamless integration with linear methods, as well as its strength in identification of the dominant contributors to the nonlinear response.
Date Issued
2016-10-01
Date Acceptance
2016-02-22
Citation
AIAA Journal: devoted to aerospace research and development, 2016, 54 (10), pp.3075-3090
ISSN
0001-1452
Publisher
American Institute of Aeronautics and Astronautics
Start Page
3075
End Page
3090
Journal / Book Title
AIAA Journal: devoted to aerospace research and development
Volume
54
Issue
10
Copyright Statement
Yinan Wang, Andrew Wynn, and Rafael Palacios. "Nonlinear Modal Aeroservoelastic Analysis Framework for Flexible Aircraft", AIAA Journal, Vol. 54, No. 10 (2016), pp. 3075-3090.
http://dx.doi.org/10.2514/1.J054537. Copyright © 2016 by Yinan Wang, Andrew Wynn and Rafael Palacios. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
http://dx.doi.org/10.2514/1.J054537. Copyright © 2016 by Yinan Wang, Andrew Wynn and Rafael Palacios. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Engineering & Physical Science Research Council (EPSRC)
Identifier
https://arc.aiaa.org/doi/10.2514/1.J054537
Grant Number
AESZ_P59906
EP/I014683/1
Subjects
Science & Technology
Technology
Engineering, Aerospace
Engineering
FLIGHT DYNAMICS
FLYING WINGS
AEROELASTICITY
MODEL
0901 Aerospace Engineering
0905 Civil Engineering
0913 Mechanical Engineering
Aerospace & Aeronautics
Publication Status
Published
Date Publish Online
2016-06-06