Prospect Of China's New Generation Of Launch Vehicles

INTRODUCTION With the development of science and technology, mankind's space activities have greatly promoted social progress and produced profound and far-reaching effects.Space technology has turned out to be one field of high technology that exerts the most profound influence on modern society.The continuous     

Flight Record Of Long March Series Of Launch Vehicles

By October 23,Chang'e-1 satellite with a one-year design lifetime has been operating in lunar orbit for one year,completed more than 4000 orbits,covering the entire moon 12 times.The satellite's platform works normally at present and all systems and equipment onboard work in their main mode.The satellite has obtained a large quantity of scientific data and achieved the preset objectives of precise orbit maneuver,successful moon orbiting,effective exploration and one- year lifetime.The Chang'e-1 mission i...     

Flight Record Of Long March Series Of Launch Vehicles

(Continued) The 13th Launch On February 1,1986,a LM-3 launch vehicle sent DFH-2,the 3rd geosynchronous experimental communications satellite of China,into space.The satellite entered the preset orbit. Launch Site:Xichang Satellite Launch Center     

Flight Record Of Long March Series Of Launch Vehicles

The world has been shocked and saddened by news of the earthquake in Sichuan Province on May 12,2008.After Wenchuan was hit by a 8.0 Richter scale earthquake,the Xi'an Satellite Control Centre (XSCC) immediately initiated an emergency response program to ensure that 15 Chinese satellites in space could provide proper support for the rescue and relief operations in the quake-stricken Sichuan Province in the southwest.     

Development Of China's New Generation Of Launch Vehicles Proceeds Well

The engine of China's new generation of launch vehicles passed its 500s long run test on May 20 in Beijing. The construction of the test bed for the propulsion system of the new generation of launch vehicles has started.The test bed,built by China Academy of Launch Vehicle Technology (CALT),will be the biggest and most powerful rocket propulsion test system in China.     

雷神二次雷达方位漂移维修实例

杭州机场安装使用的是雷神一、二次合装雷达系统,其中一次雷达是由雷神加拿大公司生产的S-BAND ASR-10SS型监视雷达,二次雷达使用的是英国Cossor公司生产的CONDOR MK 2B型单脉冲二次监视雷达(MSSR)。本文就杭州二次雷达询问机A路出现的方位漂移故障进行分析和论述,供大家参考和交流,希望能对各位在今后排除类似故障时能有所启发。     

捷联惯组批次性能评估的稳健方法与应用

针对目前惯组批次性能评估方法中存在易受异常样本影响和结果无法检验的问题,提出了两种基于中位数理论的高效率稳健评估方法,称为rp方法与稳健标准差方法。两种方法合理利用了评估过程中的稳健信息,有效地克服了异常样本的影响,并且在此基础上构建了一套完备的批次惯组评估模型,确保统计结果准确可靠。最后,文中给出了具体的工程应用实例和结果分析。     

关于集合运算的应用

通过多年的教学工作实践，发现集合的运算在多个领域中得到应用，为了方便学习，缩短学习时间，从多个角度来阐述集合运算的应用，旨在提醒学生对简单知识点的学习必须得到重视。     

关于集合运算的应用

通过多年的教学工作实践,发现集合的运算在多个领域中得到应用,为了方便学习,缩短学习时间,从多个角度来阐述集合运算的应用,旨在提醒学生对简单知识点的学习必须得到重视。     

电规准复合强化对强化层粗糙度的影响

本文采用电规准复合的方法对基体材料进行强化，结果表明强化层表面粗糙度有明显改善，且强化层的厚度主要取决于复合脉冲中的高能量脉冲。     

New Vice Presidents Of CASC

Mr.Yuan Jiajun was appointed as the Vice President of CASC on November 29,2007 by the State-owned Assets Supervision and Administration Commission of the State Council(SASAC). Dr.Yuan Jiajun was born in September,1962.He got his Ph.D in Spacecraft Design at Beijing University of Aeronautics and Astronautics(BUAA).He began to work in 1987 and has successively     

铝基复合材料攻丝试验研究

选用熔模铸造的碳化硅颗粒铝基复合材料作为样品,通过对不同丝锥材料、几何参数的攻丝试验、螺纹质量检测,考察了丝锥各因素对复合材料攻丝的影响。本项研究结果对于金属基复合材料的工程化应用具有一定指导意义。     

接触热阻的研究进展

在航天器的热控设计中,接触热阻是重要参数之一,其取值准确与否直接关系到热控设计的质量。从理论及实验研究两个方面系统介绍了接触热阻研究的发展状况,在理论研究方面综合叙述了单点理论、多点接触理论这两种理论模型;在实验方面综合叙述了接触热阻的测量方法及导热填料的应用;最后还介绍了接触热阻研究的其它方面。     

浅析工业建筑未来发展趋势

根据我国基本国情及目前建筑业的发展水平,借鉴国外工业建筑成功经验,工业建筑的发展就节约用地的原则而言,宜向多层、高层方向发展;就人与环境协调发展考虑,宜向民用建筑化方向发展;就职业安全与卫生方面,宜向高水平高标准方向发展.     

Microsatellites And Improved Acquisition Of Space Systems

Traditional practices of the United States Department of Defense (DoD) in the acquisition of space systems have focused on advanced versions of proven technology, meaning large satellites. This paradigm contributes to dependence on a handful of satellites, program schedules measured in decades, and the expensive oversight and program management functions which must be applied to systems which, since there are so few assets, cannot countenance failures. The escape from this paradigm is offered by Microsatellites (Microsats). Microsats are not only useful technology, but technology which enables a different approach to acquisition. What the authors call the Microsat Acquisition Paradigm (MAP) is partly modeled on NASA's Faster, Better, Cheaper approach and takes lessons from NASA's successes and failures. Now that some space functions can be undertaken by low-cost Microsats, the advantages of mass production, reduced government oversight, and acceptance of a reasonable failure rate can be applied to space system acquisition. This paper explores the three pillars of the MAP approach: requirements, technology, and acquisition, which together support the Holy Grail of space system affordability. Understanding the military's space requirements is the first pillar of this approach. The second pillar is the ability to correlate the requirements to the current and projected state of Microsat technology and explain what space functions can be accomplished with Microsats. Finally, historical examples, as well as recent studies. demonstrate that streamlined, cost-effective acquisition is a reality for Microsats, enabling savings in time and money compared to the acquisition system used for traditional space systems.     

浅析工业建筑未来发展趋势

根据我国基本国情及目前建筑业的发展水平，借鉴国外工业建筑成功经验，工业建筑的发展就节约用地的原则而言，宜向多层、高层方向发展；就人与环境协调发展考虑，宜向民用建筑化方向发展；就职业安全与卫生方面，宜向高水平高标准方向发展。     

Yuan Jie Named Vice President Of CASC

Mr.Yuan Jie was appointed the Vice President of CASC on October 28,2008 by the State- owned Assets Supervision and Administration Commission of the State Council (SASAC). Yuan was born in August 1965.He earned his bachelor's degree in Spacecraft System Engineering from National University of Defense Technology in July 1986 and obtained an MBA degree from China Europe International Business School(CEIBS).He began to work in July 1986 in Shanghai Aerospace System Engineering Institute of Shanghai Academy o...     

中国载人航天技术的历史性跨越

论述了发展载人航天工程对于增强综合国力和民族凝聚力、充分利用空间环境资源、明显降低空间飞行器的成本和风险、促进科技进步和高技术产业发展的重要意义;还论述了飞船研制返回再入升力控制技术、环境控制与生命保障技术、仪表与照明技术、人工运动控制技术、着陆缓冲技术、应急救生技术、回收着陆技术、再入防热技术取得的重大科技创新成果。     

Software Test And Evaluation Center Of CASC Established

The software Test and Evaluation Center of CASC (CASC-STEC)was established recently.The establishment of the CASC-STEC is an important measure to strengthen the capability of software test and evaluation,to ensure the quality of software products and