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20 September 2022 Calculation and analysis of wing flutter velocity with control surface
YanPing Xiao, Yue Wang, XiaoRui Wang
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Proceedings Volume 12261, International Conference on Mechanical Design and Simulation (MDS 2022); 122614J (2022) https://doi.org/10.1117/12.2638835
Event: Second International Conference on Mechanical Design and Simulation (MDS 2022), 2022, Wuhan, China
Abstract
Aircraft structures are elastic bodies that deform elastically under the action of aerodynamic forces. Flutter is an unstable vibration phenomenon that occurs in an elastic body in a fluid. Using the V-g method to solve the flutter velocity for a three-degree-of-freedom binary wing with a control surface. The effects of the position of the elastic axis, the aspect ratio, the shape of the control surface and the position of the deflection axis of the control surface on the flutter velocity are analysed in turn. The mechanical model and motion equation of the wing are established, and the simulation is carried out by the Theodorsen unsteady aerodynamic. The results show, the flutter velocity will decrease, if the elastic axis moves forward. With the aspect ratio decrease and the control surface centre of mass moves forward, the flutter velocity increases accordingly. However, as the control surface deflection axis becomes farther away, the flutter velocity will decreases.
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YanPing Xiao, Yue Wang, and XiaoRui Wang "Calculation and analysis of wing flutter velocity with control surface", Proc. SPIE 12261, International Conference on Mechanical Design and Simulation (MDS 2022), 122614J (20 September 2022); https://doi.org/10.1117/12.2638835
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KEYWORDS
Aerodynamics
Control systems
Nonlinear control
Aircraft structures
Analytical research
Motion models
Structural design
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