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An efficient reduced-order framework for active/passive hybrid flutter suppression

Published online by Cambridge University Press:  02 May 2022

D. F. Li*
Affiliation:
College of Water Resources and Architectural Engineering, Cold and Arid Regions Water Engineering Safety Research Center, Northwest A & F University, Yangling, Shaanxi, PR China
Z. Z. Wang
Affiliation:
College of Water Resources and Architectural Engineering, Cold and Arid Regions Water Engineering Safety Research Center, Northwest A & F University, Yangling, Shaanxi, PR China
A. Da Ronch
Affiliation:
Engineering and the Environment, University of Southampton, Southampton, UK
G. Chen
Affiliation:
State Key Laboratory for Strength and Vibration of Mechanical Structures, School of Aerospace, Xi’an Jiaotong University, Xi’an, Shaanxi, PR China
*
*Corresponding author email: lidongfeng@nwafu.edu.cn

Abstract

Flutter suppression is an important measure to improve fatigue life and enhance the performance of aircraft in modern aircraft design. In order to design more effective controllers for flutter suppression with high efficiency, an efficient reduced-order framework for active/passive hybrid flutter suppression is proposed. The traditional CFD-based ROMs have been successfully applied to active flutter suppression with high accuracy and efficiency. But, when a structure modification is made such as in aeroelastic tailoring and aeroelastic structural optimisation, the structural model should be updated, and the expensive, time-consuming CFD-based ROMs have to be reconstructed; such a process is impractical for passive flutter suppression. To overcome the realistic challenge, an efficient reduced-order framework for active/passive hybrid flutter suppression is proposed by extending an efficient aeroelastic CFD-based POD/ROM which we have developed. The proposed framework is demonstrated and evaluated using an improved AGARD 445.6 wing model. The results show that the proposed framework can accurately predict the aeroelastic response for active/passive hybrid flutter suppression with high efficiency. It provides a powerful tool for active/passive hybrid flutter suppression, and therefore, is ideally suited to design more effective controllers, and may have the potential to reduce the overall cost of aircraft design.

Information

Type
Research Article
Copyright
© The Author(s), 2022. Published by Cambridge University Press on behalf of Royal Aeronautical Society

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