Results 41 to 50 of about 5,361 (218)

Multidisciplinary Optimization Design of Ultra‑high Altitude Solar UAV

Nanjing Hangkong Hangtian Daxue Xuebao
Ultra‑high altitude solar UAV has the characteristics of ultra‑high aspect ratio and ultra‑lightweight structure. Its aerodynamic layout parameters are not only closely related to the aerodynamic characteristics and static stability of the whole aircraft，
YAO Yuan, XU Yiming, ZHANG Yu, DAI Yuke, ZUO Jianwei   +4 more
doaj   +1 more source

Analysis on Trap Panel Structure for Aircraft Outer Wing-fuselage Connection

Hangkong gongcheng jinzhan, 2019
The trap panel structure can give full play to the role of dispersing load and reducing regional stress level. The force transfer characteristics of different types of trap panel structures are analyzed, and the main design points of trap panel ...
Tang Ping, Liu Ting, Zhang Mingxing
doaj   +1 more source

Space‐Time Coding Conformal Metasurfaces for Multifrequency Beam Steering and Shaping

Advanced Materials, EarlyView.
Space‐time coding conformal metasurfaces enable dynamic wave control on curved surfaces by combining programmable spatial patterns with temporal modulation. This study shows that a single conformal aperture can independently manipulate multiple frequency components, achieving multifunctional beam shaping and steering, with implications for ...
Filippo Pepe, Lei Zhang, Yi Ning Zheng, Xiao Qing Chen, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Tie Jun Cui, Vincenzo Galdi   +8 more
wiley   +1 more source

Effect of SO2/salt spray environment on properties of conductive rubber

Journal of Aeronautical Materials
The adaptability of conductive rubber in SO2/salt spray environment was studied by using graphene-filled conductive fluoroether rubber and alloy nickel powder-filled conductive silicone rubber in“SO2/salt spray” test.
WU Xuanxuan, REN Jie, BO Lin, LIAO Liangqing   +3 more
doaj   +1 more source

Tailor‐Made Protective LixAlSy Layer for Lithium Anodes to Enhance the Stability of Solid‐State Lithium–Sulfur Batteries

Advanced Materials Interfaces, EarlyView.
An intentionally added, chemically formed LixAlSy coating stabilizes the lithium–electrolyte interface in solid‐state Li–S batteries. The layer suppresses side reactions, preserves smooth charge transfer, and improves ion transport from the start. This approach offers a practical route to more durable solid‐state batteries and a clearer understanding ...
Xinyi Wang, Katja Kretschmer, Sharif Haidar, Georg Garnweitner, Daniel Schröder   +4 more
wiley   +1 more source

Fatigue indicators for metal structures: from aircraft to bridges

Aviation
The papers focus on a fatigue monitoring method for two types of engineering structures: (a) aircraft and (b) steel bridges. However, the potential application of this new approach extends beyond these examples.
Mykhailo Karuskevych, Tetiana Maslak, Oleg Karuskevych, Yurii Vlasenko   +3 more
doaj   +1 more source

Surface‐Anchored Microgel‐Based Films as Anti‐Icing Coatings

Advanced Materials Interfaces, EarlyView.
The microgel‐based anti‐icing coatings presented in this work reduce ice adhesion by up to 90% on various substrates. This effect can be attributed to the incorporated functional cationic moieties binding a lubricating layer of quasi‐liquid interfacial water.
Inga Litzen, Jacek J. Walkowiak, Steven Zimmer, Meike Emondts, Rostislav Vinokur, Isabel K. Sommerfeld, Philippe Schumacher, Henk Schönheit, Dan E. Demco, Andrij Pich   +9 more
wiley   +1 more source

Research on AC motor pump starting problem of ram air turbine for civil aircraft

Hangkong gongcheng jinzhan
Ram air turbine starting AC motor pump procedure is an important operation after the failure of dual engines in civil aircraft. This procedure is affected by many factors such as temperature, airspeed, altitude, motor input frequency, and hydraulic oil ...
HONG Ye, WANG Bangting, MA Ying, WEI Peikun, PU Chengnan, WANG Fei   +5 more
doaj   +1 more source

A Detection Method of Atmospheric Neutron Profile for Single Event Effects Analysis of Civil Aircraft Design

Atmosphere, 2022
High-energy particles such as neutron act as serious threats to electronic equipment on board aircraft via Single Event Effects (SEE), but atmospheric neutron flux profile which could cover civil aviation altitude is rarely observed.
Yang Song, Xiangzheng Tu, Zhengqiang Li
doaj   +1 more source

Collision‐Resilient Winged Drones Enabled by Tensegrity Structures

Advanced Robotics Research, EarlyView.
Based on structures of birds such as the woodpeck, this article presents the collision‐resilient aerial robot, SWIFT. SWIFT leverages tensegrity structures in the fuselage and wings which allow it to undergo large deformations in a crash, without sustaining damage. Experiments show that SWIFT can reduce impact forces by 70% over conventional structures.
Omar Aloui, Raphael Zufferey, William Stewart, Mohammad Askari, Simon Jeger, Dario Floreano   +5 more
wiley   +1 more source