Results 71 to 80 of about 348,409 (176)

AIRCRAFT DETECTION AT LOW AND EXTREME LOW ALTITUDES THROUGH PASSIVE MACROWAVE RADIOLOCATION

Доклады Белорусского государственного университета информатики и радиоэлектроники, 2019
This article deals with describing of the means of electrically charged aircraft detection while they are flying at low and extremely low altitudes (20-60 metres).
R. G. Khekhnev
doaj  

Net-Zero Greenhouse Gas Emission Electrified Aircraft Propulsion for Large Commercial Transport

World Electric Vehicle Journal
Until recently, electrified aircraft propulsion (EAP) technology development has been driven by the dual objectives of reducing greenhouse gas (GHG) emissions and addressing the depletion of fossil fuels.
Hao Huang, Kaushik Rajashekara
doaj   +1 more source

Investigation of the Partial Discharge Inception and Flashover With IEC‐Based Comparative Tracking Index Electrodes and Comparison With Homogeneous and Inhomogeneous Electric Fields at Varying Pressures for Aerospace Applications

High Voltage, EarlyView.
ABSTRACT For designing aeronautical components, the creepage distance is usually estimated by considering the pollution level and the dielectric material group as defined by the standard IEC 60664‐1. The material group is expressed by the comparative tracking index (CTI) performed at atmospheric pressure following the standard IEC 60112.
Somya Anand, Mohammed El Amine Slama, Pierre Henrard, Michaël Darques, Solomon Berihu Araya   +4 more
wiley   +1 more source

Rural Electrification Programmes in Kenya : Policy Conclusion from a Valuation Study [PDF]

Developing countries have struggled with low electrification rates in the rural areas. This study investigates one major issue impeding the rural electrification programmes in rural Kenya: high connection payments.
Markandya, Anil, Abdullah, Sabah
core  

Changes of On-board Power Systems of Modern Aircraft in the Context of Wider Electrification

Advances in Military Technology, 2019
This article analyzes the changes of on-board electrical power systems of modern transport aircraft with a higher degree of electrification, so-called MEA (More Electric Aircraft) compared to the traditional architectures, in the field of standardized electrical power parameters.
F. Adamčík, M. Schrötter
openaire   +1 more source

Electrical properties and surface roughness of carbon fibre reinforced polymer under progressive surface abrasionZenodo.

Data in Brief
Two key technologies to reduce aircraft emissions are lightweight structures and the electrification of propulsion systems. Achieving high power density is a barrier to aviation electrification.
Muhammad Osama, Catherine E Jones, Bruce Stephen   +2 more
doaj   +1 more source

Large‐Scale Applications of Plasma Technologies: Progresses and Challenges

High Voltage, EarlyView.
ABSTRACT Plasma technologies convert electrical power into energetic electrons, ions, reactive species, radiation and heat, thereby breaking through the bottleneck of purely thermal or chemical routes and bringing impressive changes to our world. This roadmap reviews the progress and challenges of plasma technologies from a large‐scale and application ...
Pankaj Attri, Liuyang Bai, Dmitry Batomunkuev, Xueke Che, Guoxing Chen, Zhitong Chen, Wei Cui, Liguang Dou, Zhi Fang, Yangyang Fu, Fausto Gallucci, Yiming Guo, Bangdou Huang, Yinghong Li, Sirui Li, Hua Liang, Liangliang Lin, Dingxin Liu, Xiangyang Liu, Xinpei Lu, Ruonan Ma, Lanlan Nie, Guanghui Niu, Yuge Ouyang, Tao Shao, Jing Sun, Yong Tang, Xin Tu, Sergey P. Vashchenko, Hang Wang, Xianjie Wang, Anke Weidenkaff, Yun Wu, Haohan Xie, Shaojun Xu, Zongxian Yang, Fangli Yuan, Cheng Zhang, Hao Zhang, Jishen Zhang, Shuai Zhang, Yejian Zhang, Zhe Zhang, Zhibo Zhang, Peng Zhao, Shicheng Zhao, Linlin Zhong, Renwu Zhou, Zhenhua Zhou, Xi Zhu, Yifei Zhu, Haohua Zong   +51 more
wiley   +1 more source

Cessna Aircraft Company, Affidavit of Publication, Board of Directors Meeting Minutes, 1928

, 1928
Affidavit of publication concerning the renaming of the Cessna-Roos Aircraft Company as the Cessna Aircraft Company; also present are meeting minutes for the board of directors of the Cessna Aircraft Company.Archival master image scanned in reflective ...
Cessna Aircraft Company
core   +1 more source

Centrifugal Pumping Force in Oil Injection-Based TMS to Cool High-Power Aircraft Electric Motors

Energies
One of the challenges of our age is climate change and the ways in which it affects the Earth’s global ecosystem. To face the problems linked to such an issue, the international community has defined actions aimed at the reduction in greenhouse gas ...
Giuseppe Di Lorenzo, Diego Giuseppe Romano, Antonio Carozza, Antonio Pagano   +3 more
doaj   +1 more source

Feasibility of a new ironless-stator axial flux permanent magnet machine for aircraft electric propulsion application

CES Transactions on Electrical Machines and Systems, 2019
With the development of aviation electrification, higher demands for electrical machines are put forward in aircraft electric propulsion systems. The aircraft electric propulsion requirements and propulsion motor features are analyzed in this paper ...
Zhuoran Zhang, Weiwei Geng, Ye Liu, Chen Wang   +3 more
doaj   +1 more source