Stability analysis of aircraft’s sudden damage process with ROA overlapping
Aircraft Engineering and Aerospace Technology
ISSN: 0002-2667
Article publication date: 5 March 2018
Abstract
Purpose
The paper aims to propose a stability analysis method based on region-of-attraction (ROA) overlapping to evaluate the flight stability of the possible sudden damage process and guarantee flight safety in extreme cases.
Design/methodology/approach
First, according to the two flight conditions before and after damage which the aircraft may encounter, flight dynamical models are built and fitted by polynomial equation for subsequent ROA analysis. And then, the ROA overlapping estimation method based on V-s iteration is presented to complete the stability analysis of such airplane sudden damage process.
Findings
Finally, in the presence of control surface damage, case aircraft flight stability is analyzed and simulated to verify the effectiveness of the proposed method.
Practical implications
The proposed method can be used for stability check during the aircraft control law design, or for further completing the design of the emergency stable controller design.
Originality/value
Compared with previous studies on sudden damage process of aircraft, to the best of the authors’ knowledge, this is one of the pioneer studies in which the ROA and ROA overlapping concept has been introduced. This study on stability analysis of aircraft sudden damage process could further develop the theory of emergency stable control.
Keywords
Acknowledgements
Conflict of interest and funding statement: There are no conflicts of interest.
The authors would like to thank the Editors and the anonymous reviewers for critical and constructive comments that helped to improve the quality and presentation of this paper. They would also like to thank Yang CW and Wen YL for valuable discussions on the dynamical modeling. This work was supported by the National Key Basic Research Program of China (Grant No. 2014CB744900), the Fundamental Research Funds for the Central Universities (Grant No.3102018ZY003) and Aeronautical Science Foundation of China (Grant No. 20165553035).
Citation
Chen, J., Ma, C. and Song, D. (2018), "Stability analysis of aircraft’s sudden damage process with ROA overlapping", Aircraft Engineering and Aerospace Technology, Vol. 90 No. 2, pp. 398-411. https://doi.org/10.1108/AEAT-08-2016-0127
Publisher
:Emerald Publishing Limited
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