Results 51 to 60 of about 115,291 (290)

Bioinspired Adaptive Leg‐Claw Enables Robust Perching and Grasping for UAVs

Advanced Science, EarlyView.
Inspired by owl limb morphology and bat roosting behavior, this study presents a bioinspired adaptive leg‐claw mechanism that enables UAVs to perform robust and versatile perching and grasping. The design integrates a four‐link tibial structure, tension‐driven deformable feet, and active control, enabling stable perching on various branches and ...
Tianyu Cheng, Shaokun Wang, Jiehan Zou, Guiwen Shi, Zhongxue Gan, I‐Ming Chen, Guo‐Niu Zhu   +6 more
wiley   +1 more source

A Method for Selecting Key Flight Parameters of Aircraft Based on Dual-Domain Rough Set and Three-Branch Decision

Aerospace
The precise selection of key flight parameters is fundamental to enhancing aircraft condition monitoring and risk warning capabilities. However, existing methods typically rely on a single source of information, i.e., either solely expert judgments or ...
Shengkai Yan, Qiang Wang, Jiayang Yu, Jiajin Li, Qiuhan Liu, Gaocheng Chen   +5 more
doaj   +1 more source

Low Reynolds Number Propeller Slipstream Interference with Wing Aerodynamic Characteristics

Hangkong gongcheng jinzhan, 2018
Detailed research for wing aerodynamic characteristics of propeller slipstream at low Reynolds number could contribute the mechanism study of low speed near space flow, and provide reliable aerodynamic results.
Sun Kaijun, Bao Xiaoxiang, Fu Yiwei
doaj   +1 more source

Cellular localizability of unmanned aerial vehicles

Vehicular Communications, 2023
To enable pervasive applications of cellular-connected unmanned aerial vehicles (UAVs), localization plays a key role. The successful reception of localization signals from multiple base stations (BSs) is the first step to localize targets, which is called cellular localizability.
Irshad A. Meer, Mustafa Özger, Cicek Cavdar   +2 more
openaire   +1 more source

Synergistic Se‐Doping and Accompanying S‐Vacancies Drive Lattice Distortion and p‐Band Modulation for Enhanced Sodium Storage in Sulfides

Advanced Science, EarlyView.
Se‐doping in sulfides facilitates the creation of S vacancies. The collaboration of Se‐doping and S vacancies not only induces lattice distortion to weaken the M─S bonds and lift the p‐band center for improved Na+ adsorption, but also increases the number of charge carriers for an improved electronic conductivity.
Chunyang Xu, Jinfeng Liu, Biao Ma, Yawen Liang, Dongdong Wang, Chengcheng Miao, Jianhua Zhu, Liu Wang, Yunfeng Chao, Xinwei Cui   +9 more
wiley   +1 more source

A Study on the Vulnerability of Multilayer Subway Networks Based on the SPM and DQN

Applied Sciences
To address the escalating vulnerability of metro systems under multiple perturbations—including extreme rainfall, equipment failures, and passenger surges—this study tackles several limitations in existing research: the predominant focus on single-layer ...
Chen Yang, Lei Zhang, Liang You, Wenjie Tian, Chuhan Ma, Bowu Wei   +5 more
doaj   +1 more source

Evaluation Method of UAV Manufacturing Deviation on Its Aerodynamic Characteristics

Hangkong gongcheng jinzhan, 2018
Aerodynamic shape is very important to UAV. It is necessary to estimate UAV manufacturing deviation on its aerodynamic shape. The point cloud data of manufacturing shape of UAV can be measured by digital photogrammetric system. With the reference of nose,
Bao Xiaoxiang, Sun Kaijun, Fu Yiwei
doaj   +1 more source

Formalized Resolution of the Scientific Task for Improving the Effective Planning Special Purpose Unmanned Aerial Vehicles Routes of Tactical Level [PDF]

, 2019
In the article, the features of application of special purpose unmanned aerial vehicles (UAVs) of the tactical level have resulted during the operation of the joint forces.
Bondarenko, Yuriy, Horbach, Vadim, Hryshchuk, Ruslan   +2 more
core   +2 more sources

Metasurface‐Enabled Active‐Like Passive Radar

Advanced Science, EarlyView.
A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li, Jiawen Xu, Hanting Zhao, Xu Zhao, Yanjin Chen, Tie Jun Cui, Vincenzo Galdi, Lianlin Li   +7 more
wiley   +1 more source

Correction: Liu et al. UAV Path Planning in Threat Environment: A*-APF Algorithm for Spatio-Temporal Grid Optimization. Drones 2025, 9, 661

Drones
Error in Figure/Table [...]
Longhao Liu, Le Ru, Wenfei Wang, Hailong Xi, Rui Zhu, Shiliang Li, Zhenghao Zhang   +6 more
doaj   +1 more source