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.
Bing Li, Yao Li, Yiming Li
exaly +5 more sources
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
doaj +2 more sources
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
Xiangying Guo
exaly +3 more sources
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
exaly +3 more sources
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
doaj +2 more sources
Gust Response and Alleviation of Avian-Inspired In-Plane Folding Wings [PDF]
BiomimeticsThe in-plane folding wing is one of the important research directions in the field of morphing or bionic aircraft, showing the unique application value of enhancing aircraft maneuverability and gust resistance.
Haibo Zhang +4 more
doaj +2 more sources
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
doaj +2 more sources
Multi-Level Switching Control Scheme for Folding Wing VTOL UAV Based on Dynamic Allocation
DronesA folding wing vertical take-off and landing (VTOL) UAV is capable of transitioning between quadrotor and fixed-wing modes, but significant alterations occur in its dynamics model and maneuvering mode during the transformation process, thereby imposing ...
Li Shaoyi +2 more
exaly +3 more sources
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
doaj +1 more source
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
doaj +1 more source