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Flutter Analysis of Large Flexible Aircraft Based on Reduced Order Model

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Proceedings of the 10th Chinese Society of Aeronautics and Astronautics Youth Forum (CASTYSF 2022)

Part of the book series: Lecture Notes in Electrical Engineering ((LNEE,volume 972))

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Abstract

This paper developments approach for stable analysis in flight of large flexible aircraft. Considering geometrical nonlinearity, aircraft is divided into nonlinear wing components and linear fuselage component. Structural ROM method is used for wing structure modeling and nonlinear substructure method is used for comprehensive assembling wing ROM and fuselage linear modes together to obtain integrated aircraft dynamic equations. Non-planar double lattice method (DLM) is used as aerodynamic model. Stability analysis is based on the linearization around the trim configuration. The numerical results for a flexible flying wing aircraft model indicate coupling effects between rigid-body motions and elastic modes are important for this type of aircraft.

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Correspondence to An Chao .

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Chao, A., Duoyao, Z., Changchuan, X. (2023). Flutter Analysis of Large Flexible Aircraft Based on Reduced Order Model. In: Chinese Society of Aeronautics and Astronautics (eds) Proceedings of the 10th Chinese Society of Aeronautics and Astronautics Youth Forum. CASTYSF 2022. Lecture Notes in Electrical Engineering, vol 972. Springer, Singapore. https://doi.org/10.1007/978-981-19-7652-0_20

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  • DOI: https://doi.org/10.1007/978-981-19-7652-0_20

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-19-7651-3

  • Online ISBN: 978-981-19-7652-0

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