Results 21 to 30 of about 845 (188)

On the issue of creating a basic list of hazards associated with the activities of the developer of a promising supersonic civil aircraft

Научный вестник МГТУ ГА
Currently, Russia has various documents, approved by government decrees, aimed at improving regional air transport connectivity and population mobility.
V. V. Efimov, V. V. Vorobyev, V. D. Sharov   +2 more
doaj   +1 more source

Microstructure, Thermal Transport, and Dry‐Sliding Tribology of Powder‐Metallurgy Al7075 Composites Reinforced With Sol–Gel‐Derived ZnO–rGO Hybrid Nanoparticles

Advanced Engineering Materials, EarlyView.
Sol–gel‐derived ZnO–rGO hybrid nanoparticles enable Al7075 powder‐metallurgy composites to achieve concurrent gains in hardness and thermal conductivity while markedly lowering friction and wear. The hybrid architecture couples ZnO‐based load support with rGO‐assisted lamellar sliding and heat spreading, revealing a promising route toward lightweight ...
Bunyamin Aksakal, Cevher Kursat Macit, Merve Ayık, Hakan Tutumlu   +3 more
wiley   +1 more source

Study on minimum flight speed airworthiness standard of supersonic civil aircraft

Hangkong gongcheng jinzhan
Supersonic civil aircraft has significant changes in aerodynamic layout and design compared to subsonic civil aircraft, which will bring new risks and make some provisions of the current regulations inapplicable.
YANG Jianzhong, ZHANG Chenyang, YANG Shibin   +2 more
doaj   +1 more source

Hierarchical optimization method of supersonic low sonic boom configuration

Hangkong gongcheng jinzhan, 2023
Sonic boom suppression is a key technology that must be broken through in the development of a new generation of supersonic civil aircraft. The reasonable design of configuration parameters can make the aircraft have good sonic boom characteristics.
MA Chuang, HUANG Jiangtao, SHU Bowen, LIU Gang, ZHONG Shidong   +4 more
doaj   +1 more source

Electrolyte Design for Fast‐Charging Lithium‐Based Batteries

Advanced Materials, EarlyView.
A decade of progress in fast‐charging electrolytes for lithium batteries is reviewed. Electrolyte design strategies spanning solvents, salts, additives, and advanced systems, such as localized high‐concentration electrolytes (LHCEs), are summarized. Advanced diagnostic tools for lithium plating and interphase chemistry are discussed, with perspectives ...
Chen Liu, Zehao Cui, Arumugam Manthiram
wiley   +1 more source

To the issue of evaluating sonic boom overpressure and loudness [PDF]

MATEC Web of Conferences, 2019
At present, in the world there is a growing interest in the development of a new generation of supersonic passenger aircraft. One of the main problems of creating such aircraft is to ensure both an acceptable sonic boom level and high aerodynamic ...
Bashkirov Igor G., Chernyshev Sergey L., Gorbovskoy Vladlen S., Kazhan Andrey V., Kazhan Vyacheslav G., Kovalenko Victor V.   +5 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

Supercritical CO2‐Induced Porous MXene Films for Electromagnetic Interference Shielding and Infrared Stealth

Advanced Science, EarlyView.
The phase transition of supercritical CO2 induces the foaming of dense MXene film without compromise inherent structure of MXene nanosheet. The foamed porous MXene film manifests remarkable EMI shielding and infrared thermal camouflage performances. Moreover, the foaming strategy is broadly adaptable and can be extended to other two‐dimensional films ...
Hui Zhao, Shuai Li, Jiabei He, Tong Gao, Jingfeng Wang, Dongxiao Kan, Wangtu Huo, Lixin Chen   +7 more
wiley   +1 more source

Impact of a Thermally Stratified Energy Source Located in Front of a Pointed Cylinder Aerodynamic Model on the Pressure Signatures and PLdB Effect on the Ground

Applied Sciences, 2023
The problem of noise reduction in supersonic aircraft design is one of the key problems, the solution of which largely determines the speed of development of supersonic aviation as a whole.
O. V. Kravchenko, O. A. Azarova, D. D. Knight   +2 more
doaj   +1 more source

Janus Nanostructures Enabled by Confined Interfacial Engineering for Enhanced Electromagnetic Response

Advanced Science, EarlyView.
Confined diffusion‐driven interfacial engineering enables the nanoscale construction of asymmetric SiC@C Janus hollow nanoshells, achieving synergistic impedance matching and electromagnetic energy dissipation for highly efficient broadband microwave absorption at ultralow filler loading.
Limeng Song, Cheng Song, Feiyue Hu, Yongqiang Chen, Linan Wang, Huagao Wang, Li Guan, Duo Chen, Kesong Yu, Yabo Huang, Shihao Jia, Xin Xu, Qiancheng Gao, Dou Zhang, Hailong Wang, Haijiao Xie, Rui Zhang, Bingbing Fan   +17 more
wiley   +1 more source