Transfer Function Method for the Nonlinear Flutter of a High-aspect-ratio Wing

DOI

10.2991/icaita-18.2018.36How to use a DOI?

Keywords

high-aspect-ratio wing; nonlinear aerodynamic force; flutter; transfer function method

Abstract

The semi-analytical and semi-numerical transfer function method is applied to the nonlinear flutter of a high-aspect-ratio aircraft wing. Firstly, the flutter differential equation of a three-dimensional wing is established by combining the bend-twist vibration equations of the wing and the ONERA nonlinear aerodynamics model for wings. Then, using the transfer function method, the control equations are formulated in a state-space form by defining a state vector. Both the flutter velocity and flutter frequency are obtained by solving a complex eigenvalue problem. Finally, the differences of the flutter behavior of the linear and nonlinear aerodynamic models under the influence of parameters such as mass of unit length, semi-aspect ratio, the stiffness ratio of twist and bend are discussed.

Copyright

© 2018, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Zhongyuan Zhang
AU  - Jingbo Duan
AU  - Ping Lu
PY  - 2018/03
DA  - 2018/03
TI  - Transfer Function Method for the Nonlinear Flutter of a High-aspect-ratio Wing
BT  - Proceedings of the 2018 2nd International Conference on Artificial Intelligence: Technologies and Applications (ICAITA 2018)
PB  - Atlantis Press
SP  - 141
EP  - 144
SN  - 1951-6851
UR  - https://doi.org/10.2991/icaita-18.2018.36
DO  - 10.2991/icaita-18.2018.36
ID  - Zhang2018/03
ER  -