期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
螺旋行波管衰减器炭涂层的特性表征
1
作者 Vikas Kumar Anil Vohra Vishnu Srivastava 《新型炭材料》 SCIE EI CAS CSCD 北大核心 2008年第4期378-381,共4页
分别采用热解沉积、胶体石墨涂刷和电弧放电法在行波管(TWT)刚玉支撑杆上涂覆了吸波炭涂层,以改善TWT稳定性。通过一种带孔窄频—高波—道管的实验装置,应用无向量网络解析器实施反射和透射波测量,测得6.0GHz频段涂层杆的衰减程度。并... 分别采用热解沉积、胶体石墨涂刷和电弧放电法在行波管(TWT)刚玉支撑杆上涂覆了吸波炭涂层,以改善TWT稳定性。通过一种带孔窄频—高波—道管的实验装置,应用无向量网络解析器实施反射和透射波测量,测得6.0GHz频段涂层杆的衰减程度。并利用一种软件高频结构模拟器(HFSS)进行了模拟。结果表明:胶体石墨涂层显示出最大的损失或吸光率,是适宜的衰减器涂料。HFSS模拟的结果与实验结果吻合。 展开更多
关键词 衰减器涂层 行波管 稳定性分析 高频模拟 回波损耗
下载PDF
Evolving Green Aviation Transport System: A Hoilistic Approah to Sustainable Green Market Development
2
作者 A. N. Sarkar 《American Journal of Climate Change》 2012年第3期164-180,共17页
Aviation is one of the fastest growing industries as well as transportation modes in the world. Global aviation contributes about 2% of global greenhouse gas emissions and supports 8% of the world economic activity in... Aviation is one of the fastest growing industries as well as transportation modes in the world. Global aviation contributes about 2% of global greenhouse gas emissions and supports 8% of the world economic activity in terms of GDP. With the phenomenal growth in air trafficking by the national and international airliners the total carbon space available for flying is getting progressively diminished and the consequential emission levels are also becoming alarming over passage of time. The paper describes the concept of evolution of Green Transport system with focus on manufacturing of green aircraft and sustainable green marketing involving green supply chain. This entails introduction of New and innovative technologies, including aircraft designing, improving operational efficiency, air traffic control & monitoring etc;combined with emission mitigation efforts towards sustainable growth of the industry, can make enormous improvements in emission control and reduction in a planned and system-based manner. These integrated approaches are proposed to be used to harmonize the systems and processes that can essentially constitute the suggested framework of the Green Aviation Transport system. The paper, inter alia, discusses various conceptual, strategic, technological and economic and environmental dimensions of the Green Aviation transport system with focus on creating new Green Marketing opportunities for the aviation industry in future. 展开更多
关键词 Green AVIATION EMISSIONS Reduction Aircraft DESIGNING Green MARKETING SUSTAINABLE Green AVIATION Management System
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部