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Novel Nonstationarity Assessment Method for Hypersonic Flutter Flight Tests
Joint Authors
Duan, Shiqiang
Zheng, Hua
Liu, Junhao
Source
Mathematical Problems in Engineering
Issue
Vol. 2018, Issue 2018 (31 Dec. 2018), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2018-10-25
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Hypersonic aircraft have been rapidly developed in recent years both theoretically and experimentally.
Aerothermoelastic simulation is very challenging due to its inherent complexity, but physical tests are a workable approach.
Flutter tests with variable speed are a popular alternative to hypersonic tests which provide nonstationary structural response data.
This paper proposes a nonstationarity assessment method based on energy distribution in the time-frequency domain.
The proposed method reveals the nonstationarity level corresponding to the appropriate modal identification algorithm or flutter boundary prediction (FBP) method.
Several classic flutter criteria are utilized to build a hypersonic aircraft FBP framework.
Numerical simulation and experimental applications demonstrate the effectiveness and feasibility of the proposed method, which facilitates accurate flutter predictions for the subcritical turbulence response during hypersonic flutter flight.
American Psychological Association (APA)
Zheng, Hua& Liu, Junhao& Duan, Shiqiang. 2018. Novel Nonstationarity Assessment Method for Hypersonic Flutter Flight Tests. Mathematical Problems in Engineering،Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1209795
Modern Language Association (MLA)
Zheng, Hua…[et al.]. Novel Nonstationarity Assessment Method for Hypersonic Flutter Flight Tests. Mathematical Problems in Engineering No. 2018 (2018), pp.1-12.
https://search.emarefa.net/detail/BIM-1209795
American Medical Association (AMA)
Zheng, Hua& Liu, Junhao& Duan, Shiqiang. Novel Nonstationarity Assessment Method for Hypersonic Flutter Flight Tests. Mathematical Problems in Engineering. 2018. Vol. 2018, no. 2018, pp.1-12.
https://search.emarefa.net/detail/BIM-1209795
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1209795