Journal of Zhejiang University

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

Flutter characteristics of a two-dimensional prepositive elliptical wing-main wing combined configuration

Author(s): Congyu ZHAO^1, ², Baigang MI¹, Xuan BAI^1, ²
Affiliation(s): ¹Northwestern Polytechnical University, School of Aeronautics, Xi'an, 710072, China ²National Key Laboratory of Aircraft Configuration Design, Xi'an, 710072, China
Corresponding email(s): Baigang MI, mibaigang@163.com
Key Words: Aeroelasticity; Eigenvalue method; Passive flow control; Numerical simulation

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Congyu ZHAO^1,², Baigang MI¹, Xuan BAI^1,². Flutter characteristics of a two-dimensional prepositive elliptical wing-main wing combined configuration[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2600314

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author="Congyu ZHAO^1,², Baigang MI¹, Xuan BAI^1,²",
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year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2600314"
}

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doi="https://doi.org/10.1631/jzus.A2600314"

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Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: Flutter is a complex dynamic aeroelastic problem that poses a significant threat to flight safety, making its mitigation a critical focus of aeronautical research. This study proposes a two-dimensional prepositive elliptical wing-main wing combined configuration and investigates its influence on flutter characteristics. Based on structural dynamics, a reduced-order aeroelastic model of the two-dimensional combined configuration is established. The critical flutter velocities of configurations with and without the prepositive elliptical wing are computed using the eigenvalue method. The results from a representative case show that the configuration yields a critical flutter speed enhancement of up to 43.59%. Through a parametric design space exploration, a range of effective design parameters is identified: for chordwise placement within 0.04c (where c is the main wing chord) directly in front of the main wing, a pre-wing with a long axis of 0.02c, short axis of 0.005c, and aspect ratio of 4 is recommended. For distances beyond 0.04c, a diagonal arrangement above and ahead of the main wing is more effective, with a recommended long axis of 0.01c, a short axis of 0.005c, and an aspect ratio of 2.

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On-line Access: 2026-07-13

Received: 2026-05-14

Revision Accepted: 2026-06-29

Crosschecked: 0000-00-00

Cited: 0

Clicked: 16

Citations: Bibtex RefMan EndNote GB/T7714

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