努力打造中国民机品牌一航西飞提升"新舟"60飞机综合服务水平

今年7月底8月初,"新舟"60飞机先后交付刚果(布)、老挝、赞比亚,从而拉开了"新舟"60飞机集中批量交付的帷幕.到今年底,"新舟"60将累计交付国外用户11架,分布在非洲及东南亚6个国家.截至7月底,"新舟"60飞机累计签订国外销售合同32架,其新的市场也正在开拓之中.     

鸭式布局与"台风"战斗机

从EFA到"台风"改进的过程,揭示了"台风"的设计从近距耦合鸭式布局演进为远距耦合鸭式布局,实现了飞机性能的可持续发展,为先进作战飞机的发展提供了宝贵的经验和借鉴.     

波音的"蜻蜒"鸭式旋翼/机翼方案验证机

"蜻蜒"鸭式旋翼/机翼飞机是波音公司"鬼怪"工作队目前正在发展研制中的一种方案验证机.具有像旋翼飞机一样的垂直起降和空中悬停能力,又能像固定翼飞机一样高速巡航飞行.在这种机基础上能派生出能满足不同军种要求的无人或有人驾驶的鸭式旋翼/机翼机     

高超音速飞机的先行者——"X-43A"

一个多月前,就传扬着高超音速飞机即将首飞的消息.6月2日,高超音速飞机的先行者--"X-43"(见图1),像一颗待发的人造卫星置于"飞马"火箭的顶端.不过,火箭升空时,就偏离轨道,空中急剧翻滚.随即,一声巨响,首飞告败!     

以"传承辟新,寻优勇进"之风提升我国商用飞机创新之力

"两弹一星"元勋王大珩院士,力主"坚持传承辟新,寻优勇进,在实践中开辟发展中国大飞机的道路". 没有顽强拼搏、不懈奋斗,不可能实现伟大梦想.把中国大飞机搞上去,离不了扎实的干事创业基本功.     

民用飞机设计参考机种之一庞巴迪"挑战者"300双发涡扇商业运输机

庞巴迪"挑战者"300是巴西庞巴迪宇航公司研制的一架双发涡扇商业运输机.载客8人,航程5000余公里.整架飞机由跨国生产.该机前后共试飞2126小时,出动飞机达1039架次.取得FAAFAR25部和JAAJAR25部适航证.     

方掩奇功锦簿再绘航空宏图陕飞集团制定"十一五"规划

通过"十五"计划的努力,陕飞集团在经济指标、型号研制、飞机生产、技术改造、信息化建设、企业文化建设上取得了令人瞩目的辉煌成就,形成了独具特色的核心竞争力,奠定了陕飞集团作为运输机和特种飞机研发基地的地位.     

纸上谈兵也精彩"凯美拉"海军通用支援飞机设计方案

大学生团队飞机设计竞赛是AIAA组织的一系列年度航空航天设计竞赛之一,其中2000年的竞赛主题是设计一种可以取代当时服役的C-2舰上起落运输机、E-2C 舰载预警机、S-3B舰载反潜机和ES-3A舰载电子监视飞机的通用海军支援飞机,来自弗吉尼亚理工大学的"凯美拉"小组赢得了冠军.     

赛斯纳"750嘉奖状X"双发涡扇商用运输机

"750嘉奖状X"是美国赛斯纳飞机公司于1990年设计的双发涡扇商用运输机.载客最多12人,航程6000余公里.该机采用超临界翼型,兼有高速巡航和远程巡航的特点,能在短的场地起降,是公司第一架装有全动力飞行操纵的飞机.     

航空武器装备如何开展"三化"研究

结合飞机燃油副油箱的研制,从"三化"的要求、实现途径、方法及实施步骤阐述了航空武器装备如何开展"三化"研究,并提出了在"三化"研究中应注意的问题,说明了"三化"研究的预期效果.     

ICP-AES法测定纯铜中的Bi,Sb,As,Fe,Ni,Pb,Sn,Zn,Ag的方法

研究了ICP-AES法测定纯铜中的Bi,Sb,As,Fe,Ni,Pb,Sn,Zn和Ag等9个元素的分析方法.进行了基体元素铜对9个分析元素的光谱干扰研究,选择了合适的分析谱线,同时测定了分析方法的检出限.     

Triton, Pluto, Centaurs, and Trans-Neptunian Bodies

The diverse populations of icy bodies of the outer Solar System (OSS) give critical information on the composition and structure of the solar nebula and the early phases of planet formation. The two principal repositories of icy bodies are the Kuiper belt or disk, and the Oort Cloud, both of which are the source regions of the comets. Nearly 1000 individual Kuiper belt objects have been discovered; their dynamical distribution is a clue to the early outward migration and gravitational scattering power of Neptune. Pluto is perhaps the largest Kuiper belt object. Pluto is distinguished by its large satellite, a variable atmosphere, and a surface composed of several ices and probable organic solid materials that give it color. Triton is probably a former member of the Kuiper belt population, suggested by its retrograde orbit as a satellite of Neptune. Like Pluto, Triton has a variable atmosphere, compositionally diverse icy surface, and an organic atmospheric haze. Centaur objects appear to come from the Kuiper belt and occupy temporary orbits in the planetary zone; the compositional similarity of one well studied Centaur (5145 Pholus) to comets is notable. New discoveries continue apace, as observational surveys reveal new objects and refined observing techniques yield more physical information about specific bodies.     

加快维修周转时间

大到整个飞机机身,小到某个飞机附件,周转时间都是十分重要的。在成本、质量和速度的三角关系中,后者正在占据越来越重要的地位。现在航空业出现一种新趋势,即航空公司在寻找维修公司时更注重维修周转时间的长短,以前,却是更为注重维修价格的高低。随着飞机营运费用的升高,周转     

组织、加工、实施

瑞士威力铭-马科黛尔公司在欧洲机床展(EMO)上展示了带直接驱动技术的超精密棒料铣车复合加工中心。威力铭公司是全球第一家制造铣/钻与车棒料复合加工中心的厂家。公司首次推出超精密的"多工序加工中心",即直线轴和旋转轴全部被直接驱动,在数控系统中输入     

维修数据传输:更快速、更廉价、更好

一直以来,航空公司大多采用ACARS通信系统(飞机通信寻址和报告系统)进行空中通信服务.但与陆地通信系统相比,该系统的传输速度慢而且成本高,成为目前影响飞行数据传输速度的重要因素之一.一些MRO软件供应商已开始开发机载无线通信系统,试图改善以往缓慢、昂贵和复杂的空中无线服务,使飞行中生成的重要维修数据以更低的成本、更快的速度和更高效率实现传输.     

A survey of the outer planets Jupiter,Saturn, Uranus,Neptune, Pluto,and their satellites

A survey of current knowledge about Jupiter, Saturn, Uranus, Neptune, Pluto, and their satellites is presented. The best available numerical values are given for physical parameters, including orbital and body properties, atmospheric composition and structure, and photometric parameters. The more acceptable current theories of these bodies are outlined with thorough referencing offering access to the details. The survey attempts to cover the literature through May 1, 1972. Prepared Under Contract No. NAS7-100 National Aeronautics and Space Administration.     

Ion engine grids: Function,main parameters,issues, configurations,geometries, materials and fabrication methods

Ion optics are crucial components of ion thrusters and the study of the different ion extraction solutions used since the beginning of the electric propulsion era is essential to understand the evolution of ion engines. This work describes ion engine grids' main functions, parameters and issues related to thermal expansion and sputter erosion, and then introduces a review of ion optics used for significant launched and tested ion thrusters since 1970. Configurations, geometries, materials and fabrication methods are analyzed to understand when typical ion thrusters use two or three grids, what are the thicknesses and aperture sizes of the screen, accelerator and decelerator grids, why molybdenum and carbon-based materials such as pyrolytic graphite and carbon–carbon are the best available options for ion optics and what is the manufacturing method for each material.     

CIR Morphology, Turbulence, Discontinuities, and Energetic Particles

Corotating interaction regions (CIRs) in the middle heliosphere have distinct morphological features and associated patterns of turbulence and energetic particles. This report summarizes current understanding of those features and patterns, discusses how they can vary from case to case and with distance from the Sun and possible causes of those variations, presents an analytical model of the morphological features found in earlier qualitative models and numerical simulations, and identifies aspects of the features and patterns that have yet to be resolved. This revised version was published online in August 2006 with corrections to the Cover Date.