Geometrically Nonlinear Aeroelastic Stability Analysis and Wind Tunnel Test Validation of a Very Flexible Wing
Joint Authors
Cooper, J. E.
Xie, Changchuan
Liu, Yi
Yang, Chao
Source
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-05-04
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
VFAs (very flexible aircraft) have begun to attract significant attention because of their good flight performances and significant application potentials; however, they also bring some challenges to researchers due to their unusual lightweight designs and large elastic deformations.
A framework for the geometrically nonlinear aeroelastic stability analysis of very flexible wings is constructed in this paper to illustrate the unique aeroelastic characteristics and convenient use of these designs in engineering analysis.
The nonlinear aeroelastic analysis model includes the geometrically nonlinear structure finite elements and steady and unsteady nonplanar aerodynamic computations (i.e., the nonplanar vortex lattice method and nonplanar doublet-lattice method).
Fully nonlinear methods are used to analyse static aeroelastic features, and linearized structural dynamic equations are established at the structural nonlinear equilibrium state to estimate the stability of the system through the quasimode of the stressed and deformed structure.
The exact flutter boundary is searched via an iterative procedure.
A wind tunnel test is conducted to validate this theoretical analysis framework, and reasonable agreement is obtained.
Both the analysis and test results indicate that the geometric nonlinearity of very flexible wings presents significantly different aeroelastic characteristics under different load cases with large deformations.
American Psychological Association (APA)
Xie, Changchuan& Liu, Yi& Yang, Chao& Cooper, J. E.. 2016. Geometrically Nonlinear Aeroelastic Stability Analysis and Wind Tunnel Test Validation of a Very Flexible Wing. Shock and Vibration،Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1119256
Modern Language Association (MLA)
Xie, Changchuan…[et al.]. Geometrically Nonlinear Aeroelastic Stability Analysis and Wind Tunnel Test Validation of a Very Flexible Wing. Shock and Vibration No. 2016 (2016), pp.1-17.
https://search.emarefa.net/detail/BIM-1119256
American Medical Association (AMA)
Xie, Changchuan& Liu, Yi& Yang, Chao& Cooper, J. E.. Geometrically Nonlinear Aeroelastic Stability Analysis and Wind Tunnel Test Validation of a Very Flexible Wing. Shock and Vibration. 2016. Vol. 2016, no. 2016, pp.1-17.
https://search.emarefa.net/detail/BIM-1119256
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1119256