Effects of stroke deviation on hovering aerodynamic performance of flapping wings

2019 ◽  
Vol 31 (11) ◽  
pp. 111901 ◽  
Keyword(s):  
Aerodynamic Performance ◽  
Flapping Wings

Aerodynamic performance of flexible flapping wings deformed by slack angle

2020 ◽  
Vol 15 (6) ◽  
pp. 066005 ◽  
Author(s):  
Reynolds Addo-Akoto ◽  
Jong-Seob Han ◽  
Jae-Hung Han
Keyword(s):  
Aerodynamic Performance ◽  
Flapping Wings

scholarly journals Effect of Wing Corrugation on the Aerodynamic Efficiency of Two-Dimensional Flapping Wings

2020 ◽  
Vol 10 (20) ◽  
pp. 7375
Author(s):  
Thanh Tien Dao ◽  
Thi Kim Loan Au ◽  
Soo Hyung Park ◽  
Hoon Cheol Park
Keyword(s):  
Three Dimensional ◽  
Leading Edge ◽  
Aerodynamic Performance ◽  
Flapping Wing ◽  
Flapping Wings ◽  
Two Dimensional ◽  
Aerodynamic Efficiency ◽  
Insect Wing ◽  
Wing Motion ◽  
Computational Fluid Dynamics Cfd

Many previous studies have shown that wing corrugation of an insect wing is only structurally beneficial in enhancing the wing’s bending stiffness and does not much help to improve the aerodynamic performance of flapping wings. This study uses two-dimensional computational fluid dynamics (CFD) in aiming to identify a proper wing corrugation that can enhance the aerodynamic performance of the KUBeetle, an insect-like flapping-wing micro air vehicle (MAV), which operates at a Reynolds number of less than 13,000. For this purpose, various two-dimensional corrugated wings were numerically investigated. The two-dimensional flapping wing motion was extracted from the measured three-dimensional wing kinematics of the KUBeetle at spanwise locations of r = (0.375 and 0.75)R. The CFD analysis showed that at both spanwise locations, the corrugations placed over the entire wing were not beneficial for improving aerodynamic efficiency. However, for the two-dimensional flapping wing at the spanwise location of r = 0.375R, where the wing experiences relatively high angles of attack, three specially designed wings with leading-edge corrugation showed higher aerodynamic performance than that of the non-corrugated smooth wing. The improvement is closely related to the flow patterns formed around the wings. Therefore, the proposed leading-edge corrugation is suggested for the inboard wing of the KUBeetle to enhance aerodynamic performance. The corrugation in the inboard wing may also be structurally beneficial.

Effects of wing shape, aspect ratio and deviation angle on aerodynamic performance of flapping wings in hover

2016 ◽  
Vol 28 (11) ◽  
pp. 111901 ◽  
Author(s):  
Aamer Shahzad ◽  
Fang-Bao Tian ◽  
John Young ◽  
Joseph C. S. Lai
Keyword(s):  
Aspect Ratio ◽  
Aerodynamic Performance ◽  
Wing Shape ◽  
Flapping Wings ◽  
Deviation Angle

Effects of flexibility and aspect ratio on the aerodynamic performance of flapping wings

2018 ◽  
Vol 13 (3) ◽  
pp. 036001 ◽  
Author(s):  
Junjiang Fu ◽  
Xiaohui Liu ◽  
Wei Shyy ◽  
Huihe Qiu
Keyword(s):  
Aspect Ratio ◽  
Aerodynamic Performance ◽  
Flapping Wings
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