A LM-4C Launches 4 Satellites into Space Simultaneously

正At 12:25 Beijing time on April 10,a LM-4C carrier rocket lifted off from the Jiuquan Satellite Launch Center,launching 3 remote sensing satellites and a micro/nano technology testing satellite into their preset orbits.It was the 271st flight of the LM series launch vehicle.     

Chang'e 4 Relay Satellite Queqiao Launched Atop A LM-4C

正China launched a relay satellite named Queqiao on a LM-4C launch vehicle from the Xichang Satellite Launch Center at 05:28 Beijing time on May 21,2018.It is the world’s first communications satellite that operates in the orbit around the second Lagrangian(L2)point of the Earth-moon system,     

Shenzhou 4 Experiments Completed

Center for Space Science and Applied Research, Chinese Academy of Sciences announced recently that the development and production of Shenzhou 5 is being accelerated. Everything is going on well with the astronauts' training and Shenzhou 5 will be launched as scheduled. It is also reported that all the science experiments conducted on orbit by Shenzhou 4, which was launched successfully last year, have been completed. It was the first time for our country to survey the overall space environment in large scale for Shenzhou spaceship's operating on orbit, making "a sketch map of road condition".     

"神舟"4号成功返回在内蒙古中部准确着陆

本刊讯北京时间１月５日１９时１６分，“神舟”４号飞船在完成预定空间科学和技术试验任务后，在内蒙古中部地区准确着陆。至此，我国载人航天工程第４次飞行试验获得圆满成功。中共中央政治局常委李长春在北京航天指挥控制中心观看了飞船返回实况。中共中央政治局委员、中央军委副主席郭伯雄，中共中央政治局委员、中央军委副主席曹刚川，全国政协副主席朱光亚，中央军委委员、总装备部部长、载人航天工程总指挥李继耐，总装备部政委迟万春等，也在北京航天指挥控制中心观看。国家主席、中央军委主席江泽民在听取载人航天工程指挥部向他汇…     

FY-4 Meteorological Satellite

FY-4 is the second generation of Chinese geostationary satellite for quantitative remote sensing meteorological application. The detection efficiency, spectral bands, spatial and time resolution have been greatly improved with respect to those of first generation, as well as the radiometric calibration and sensitivity. The combination of multichannel detection and vertical sounding was first realized on FY-4, because both the Advanced Geostationary Radiation Imager(AGRI) and Geostationary Interferometric Infrared Sounder(GIIRS) are on the same spacecraft. The main performance of the payloads including AGRI, GIIRS and Lightning Mapping Imager, and the spacecraft bus are presented, the performance being equivalent to the level of the third generation meteorological satellites in Europe and USA. The acquiring methods of remote sensing data including multichannel and high precision quantitative observing, imaging collection of the ground and cloud, vertical observation of atmospheric temperature and moisture, lightning imaging observation and space environment detection are shown. Several innovative technologies including high accuracy rotation angle detection and scanning control, high precision calibration, micro vibration suppression, unified reference of platform and payload and on-orbit measurement, real-time image navigation and registration on-orbit were applied in FY-4.     

Si3N4/TC4活性钎焊连接机理与性能

针对Si_3N_4/TC4复合结构钎焊连接问题,研究了钎料和母材中活性元素Ti对Si_3N_4/TC4接头润湿性、界面结合机制和力学性能的影响。进行了润湿、接头显微组织分析和剪切强度试验,结果表明:活性元素Ti对于钎料在陶瓷表面的润湿起主要作用,Ag-Cu钎料通过TC4母材中Ti元素的长程扩散进入Si_3N_4界面虽然实现润湿,但形成的反应产物并不明显,陶瓷/钎料界面成为断裂薄弱区域。Ag-Cu-Ti钎料中Ti元素在Si_3N_4一侧界面富集形成TiN+Ti_5Si_3反应层,对钎料在陶瓷界面润湿性和接头断裂脆性都具有改善作用,接头剪切强度达到267.3 MPa。     

遥感卫星四号发射成功

12月1日12点42分.我国在酒泉卫星发射中心用长征二号丁运载火箭成功地将遥感卫星四号送人太空。中国航天科技集团公司副总经理袁家军等领导和专家在酒泉卫星发射中心指挥控制大厅现场指导卫星发射。     

GF-4 Put into Operation

正China’s first geosynchronous orbit high-resolution mapping satellite has been put into operation formally.During the 6-month in-orbit operation,the tests on the satellite platform system,the function of satellite payload system,the integration of satellite     

GF-4 Satellite Successfully Launched

<正>At 0:04 Beijing time on December29,2015,a LM-3B launch vehicle lifted off from the Xichang Satellite Launch Center,putting the GF-4 satellite into orbit successfully.This was the 19th flight mission carried out by China in 2015with 100%success,and was the last one during the"12th Five-Year Plan"period as     

GF-4 Completed Multiple Tests

<正>Recently,the mechanical test and satellite-launch vehicle matching and separation test for the flight model GF-4satellite was completed,laying a robust foundation for future testing work.GF-4 is China’s first geostationary medium and high-resolution optical imaging remote sensing satellite,as well as the first satellite based on the newly developed high orbit remote sensing satellite platform.The success of these     

Progress of GF-4 Satellite

GF-4 Undergoes Test GF-4 is the first geosynchronous orbit Earth observation satellite with high resolution.The Beijing Institute of Control Engineering,CAST conducted a verification test for the complete satellite fuelling procedure,simulated the whole cycle of parallel propellant tanks filling of the propulsion subsystem.     

长征四号乙／丙运载火箭多星发射技术现状与展望

介绍了长征四号乙／丙（CZ-4B／4C）运载火箭的多星发射技术。给出了整流罩Ф900mm的一箭双星、一箭三星的发射统计与串联发射构型、正在研制的更大包络的双星发射构型,以及并联发射构型。介绍了CZ-4B／4C运载火箭后续多星发射和搭载发射的构型、连接解锁装置和分离程序。     

LuxSpace’s 4M Mission

<正>Chang’e 5-T1,the Earth re-entry demonstrator in phase III of the Chinese Lunar Exploration Program was sent on an Earth-Moon free return trajectory onboard a LM-3C launch vehicle at 2:00 am Beijing Time on October 24,2014.Chang’e 5-T1 also carried a private mission to the moon as a piggyback payload called the 4M mission(Manfred     

FY-4 Satellite Delivered to Customer

<正>On September 25,the on-orbit delivery ceremony for China’s new generation geostationary meteorological satellite FY-4 was held in Beijing.China Aerospace Science and Technology Corporation(CASC),the manufacturer of the satellite officially delivered FY-4 to the customer,the China Meteorological Administration(CMA)for operation.The delivery of FY-4 marks the up-     

CNSA Released GF-4 First Imagery

正On February 3,2016,China National Space Administration(CNSA)released the first imagery acquired by the GF-4 satellite,which includes 50m panchromatic,50m multispectral and400m medium wave infrared images.The quality of the images was of a high standard both clear images,and layers thus providing rich information.     

神舟四号上的细胞融合实验

神舟四号上有一个不大的黑色小盒子,这是中国科学院上海技术物理研究所研究人员自行设计和研制的一台细胞电融合仪。在这个小盒子中进行了目前国际上生物技术前沿的两项课题研究———植物细胞和动物细胞的电融合实验。本文将介绍空间细胞融合实验技术研究的进展和我国神舟四号上的实验及其应用前景。     

高氯酸铵粒子APd43与推进剂燃速相关性研究

采用两种数学模型表征ＡＰ粒度分布，讨论了高氯酸铵粒子质量平均直径与推进剂燃速的相关性，认为调节ｄ４３是实现装药工艺过程燃速控制实用的方法。在多次大型装药过程中，用ＡＰｄ４３与ＢＳＦφ１２７发动机燃速相关性来控制全尺寸发动机装药过程燃速均取得了较稳定的结果。