Liu Yi, Xie Changchuan, Xu Yuntao, Zhou Danjie

DOI Number: N/A

Conference number: IFASD-2017-236

A theoretical analysis model is established to simultaneously investigate the flight dynamics and aeroelastic stability of the flexible flying wing. The coupling effects between the rigid motion and structural elastic motion tend to be significant and strongly affect the aircraft’s stability when the structure is flexible. In this paper, common body coordinate system is utilized to conveniently describe the large deformation and flight dynamics for very flexible flying wing. Small disturbance hypothesis is adopted to establish the stability analysis model. The rigid/elastic motions coupling stability analysis results indicate that the difference between the rigid mode frequency and the elastic mode frequency tends to be unclear when the structural flexibility is significant. This may induce rigid/elastic motion coupling instability problems.

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In Categories: 1. IFASD 2017, 1.Events, Aeroservoelasticity
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