Flutter Characteristics of a Modified Z-Shaped Folding Wing Using a New Non-Intrusive Model
AerospaceUnmanned aerial vehicles (UAVs) with folding wings can serve in multiple mission profiles, usually accompanied by sudden changes in flight speed. These bring great challenges to the aeroelastic design of UAVs, especially in the calculation of flutter ...
Wuchao Qi, Shimiao Wu, Sumei Tian
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The Functions of Phasic Wing-Tip Folding on Flapping-Wing Aerodynamics
BiomimeticsInsects produce a variety of highly acrobatic maneuvers in flight owing to their ability to achieve various wing-stroke trajectories. Among them, beetles can quickly change their flight velocities and make agile turns.
Yiming Li +4 more
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Aerodynamic Analysis and Simulation for a Z-Shaped Folding Wing UAV
AerospaceThe potential of folding wing unmanned aerial vehicles (UAVs) in enhancing the adaptability of complex missions is substantial. Analyzing the aerodynamic characteristics of these UAVs is vital for optimizing the design of their folding wing configuration
Jin-Gang Wang, Xiang-Ying Guo
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Deployment Modes and Aerodynamic Analysis of UAV Orthogonal Biaxial Folding Wing
Aerospace, 2022 Considering the deployment characteristics of the folding wing, this paper proposed three deployment modes, synchronous deployment, fixed-axis–non-fixed-axis stepwise deployment, and non-fixed-axis–fixed-axis stepwise deployment, to obtain the optimal ...
Gang Wang +7 more
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Quantifying Nature’s Bistability: Simulation of Earwig Fan Folding [PDF]
BiomimeticsIn this work, a numerical tool is presented to simulate the dynamics of insect wing folding by example of the fan folding of the dermapteran hindwing. The scalability of the system is demonstrated by generalising the mechanical behaviour from the small ...
Nele Binder +3 more
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The Influence of Wing Membrane Elasticity on Aerodynamics in a Bat-Inspired Flapping Robot [PDF]
BiomimeticsThis study investigates the aerodynamic effects of wing membrane elasticity inspired by bats, which exhibit exceptional maneuverability and stability. By mimicking bat wing folding and flapping motions, a 2-DOF flapping mechanism was developed to examine
Szu-I Yeh, Chia-Hsu Chiang
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Local weakening of cell-extracellular matrix adhesion triggers basal epithelial tissue folding [PDF]
The EMBO JournalDuring development, epithelial sheets sculpt organs by folding, either apically or basally, into complex 3D structures. Given the presence of actomyosin networks and cell adhesion sites on both sides of cells, a common machinery mediating apical and ...
Andrea Valencia-Expósito +4 more
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Research on the Motion Characteristics of Longitudinal Second Fold Wings [PDF]
Hangkong bingqi, 2023 Folding wings are flight device structural components that require small space for ammunition seeking, facilitating the storage and transportation of launch boxes (barrels), greatly saving ammunition storage and transportation space, and increasing the ...
Lü Tiegang, Zhang Xiaowen, Li Yongwei, Zhang Yu
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Z-folding aircraft electromagnetic scattering analysis based on hybrid grid matrix transformation
Scientific Reports, 2022 To study the electromagnetic scattering characteristics of a morphing aircraft with Z-folding wings, a method of hybrid grid matrix transformation (HGMT) is presented.
Zeyang Zhou, Jun Huang
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Beilstein Journal of Nanotechnology, 2022 When beetles are not in flight, their hind wings are folded and hidden under the elytra to reduce their size. This provided inspiration for the design of flapping-wing micro aerial vehicles (FWMAVs).
Jiyu Sun +5 more
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