Results 71 to 80 of about 6,179,327 (244)

Simulative Investigation of the Radar Cross Section of Wind Turbines

Applied Sciences, 2019
Wind-power generation is one of the fundamental sources of renewable energy. However, due to the increasing size of wind turbines, they cause unwanted interference with radar systems for civic protection, especially for on-shore locations.
Sebastian Hegler, Dirk Plettemeier
doaj   +1 more source

Multi‐Li+ Coordination for Superior Room‐Temperature Ionic Conductivity in PEO Solid Electrolytes

Advanced Materials, EarlyView.
A phosphonate‐functionalized polycarboxylate ether (P‐PCE) is introduced into PEO electrolytes to induce multi‐Li+ ions coordination, which effectively dissociates lithium salts, liberates Li+ from the strong chelation by PEO chains, and promotes fast Li+ hopping between adjacent coordination sites. Simultaneously, this design establishes dynamic, high‐
Hengming Yan, Bowen Zhang, Xuefan Liu, Lu Wang, Cunlong Hu, Anran Sheng, Congcong Zhang, Linglong Kong, Zhenzhen Wu, Yulin Zhong, Sheng Liu, Shanqing Zhang   +11 more
wiley   +1 more source

Amphiphilic Non‐Isocyanate Polyurethane Coatings With Tunable Antifouling and Fouling‐Release Performance: A Log‐Ratio Assessment Framework

Advanced Materials Interfaces, EarlyView.
Amphiphilic non‐isocyanate polyurethane (NIPU) coatings containing reactive hydrophobic poly(dimethylsiloxane) (PDMS) and hydrophilic methoxy poly(ethylene glycol) (MPEG) prepolymers for marine antifouling (AF) and fouling‐release (FR) applications were investigated. The coatings were evaluated with a set of representative marine foulants.
Nastaran Shahzadeh, Shane J. Stafslien, Lyndsi J. VanderWal, John A. Finlay, Peter Allen, Anthony S. Clare, Ivan Hevus, Dean C. Webster   +7 more
wiley   +1 more source

Statistical analysis of hypersonic glide vehicle radar cross section

IET Radar, Sonar & Navigation
The capability to design, manufacture and test Hypersonic Glide Vehicles (HGVs) has been demonstrated by a number of nations, and they are increasingly forming part of military inventories, potentially offering capabilities highly unique to this ...
Jonathan Pinto, Neil L. Whyman, Matthew A. Ritchie, Hugh Griffiths   +3 more
doaj   +1 more source

Ultra Wide Band Radar Cross Section Reduction of a Perfectly Electric Conductor Sphere by the Application of Multilayer Metamaterial Coatings

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
A full-wave analytical method using the addition theorems and Hertzian potential functions are used to compute the radar cross section of a sphere coated by several layers composed of common materials and metamaterials.
Homayoon Oraizi, Ali Abdolali, Mahmoud Fallah   +2 more
doaj   +1 more source

Superstrate-based patch antenna array with reduced in-band radar cross section

, 2021
To design a low radar cross section (RCS) antenna, the major concern is not only to reduce scattering, but also to maintain its radiation parameters, viz. gain, voltage standing wave ratio (VSWR), etc.
Singh, A, Vyshnavi Das, SK, Singh, Hema, Gurap, AA   +3 more
core   +1 more source

UCST‐Driven Shape Morphing in Digital Light Processing 4D‐Printed Hydrogels

Advanced Materials Technologies, EarlyView.
A DLP‐printable UCST hydrogel based on poly(acrylic acid‐co‐acrylamide) enables reversible thermally induced expansion and 4D shape morphing. Rational control of composition, porosity, and multimaterial architecture enables predictable 4D shape morphing through differential swelling and localized actuation, opening new opportunities for high‐resolution
Fato Niang, Vincent Lapinte, Sebastien Blanquer   +2 more
wiley   +1 more source

Active radar cross section reduction : Theory and applications

, 2015
This book discusses the active and passive radar cross section (RCS) estimation and techniques to examine the low observable aerospace platforms. It begins with the fundamentals of RCS, followed by the dielectric, magnetic and metamaterials parameters of
Jha, RM, Hema, Singh
core  

Aerosol Jet Printing of Benzocyclobutene as a Thermally Stable, Low‐Loss Dielectric for Multilayer Microwave Electronics

Advanced Materials Technologies, EarlyView.
Multilayer aerosol jet printed components with a low‐loss, thermally stable dielectric are demonstrated using benzocyclobutene. Ink formulation and in‐line droplet evaporation control support high‐quality, versatile, and stable printing performance. A specialized measurement for low‐loss materials reveals promising microwave properties, which, combined
Md Ramjan Ali, Trent Moritz, Mohammad Tayeb Al Qaseer, Ethan B. Secor   +3 more
wiley   +1 more source

Development of radar cross section analysis system of naval ships

International Journal of Naval Architecture and Ocean Engineering, 2012
A software system for a complex object scattering analysis, named SYSCOS, has been developed for a systematic radar cross section (RCS) analysis and reduction design.
Kookhyun Kim, Jin-Hyeong Kim, Tae-Muk Choi, Dae-Seung Cho   +3 more
doaj   +1 more source