Results 1 to 10 of about 197 (107)
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
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
PLoS ONE, 2014 We revise two relatively rare ensign wasp genera, whose species are restricted to Sub-Saharan Africa: Afrevania and Trissevania. Afrevania longipetiolata sp. nov., Trissevania heatherae sp. nov., T. hugoi sp. nov., T. mrimaensis sp. nov. and T.
István Mikó +4 more
doaj +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 Effect of Folding Wing on Aerodynamics and Power Consumption of a Flapping Wing
International Journal of Aerospace System Engineering, 2016 Experimental study on the unsteady aerodynamics analysis and power consumption of a folding wing is accomplished using a wind tunnel testing.
Cheolheui Han
exaly +3 more sources
Design of a hydraulically-driven bionic folding wing
Journal of the Mechanical Behavior of Biomedical Materials, 2018 Membranous hind wings of the beetles can be folded under the elytra when they are at rest, and rotate and lift the elytra up only when they need to fly. This characteristic provides excellent flying capability and good environment adaptability. Inspired by the beetles, the new type of the bionic folding wing for the flapping wing Micro Air Vehicle (MAV)
Jiyu Sun, Pengyu Du
exaly +3 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
Sizing of High Aspect Ratio Wings with Folding Wing Tips
AIAA SCITECH 2022 Forum, 2022 High-aspect-ratio wings are of particular interest to modern aircraft design due to the inherent reduction in induced drag that they provide. However, such wing configurations often come with problems such as increased structural weight and oversized wingspans for existing airport facilities. Unlike conventional folding wingtips, as used on the 777-X,
Gu, Huaiyuan +3 more
openaire +3 more sources