共查询到20条相似文献,搜索用时 484 毫秒
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西方国家军用航天的国际合作最近有趋热之势.美国欲通过"百星"计划和北约组织中的26个盟国一起打造"太空快速反应联盟";澳大利亚将加入美国军用的"宽带全球卫星通信"星座计划的建设,与美国共享先进的军用卫星通信系统;加拿大将用自己的卫星帮助美国监视别国的卫星. 相似文献
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自1957年前苏联成功发射第一颗人造卫星以来,人类航天活动得到了突飞猛进的发展.人类航天活动在促进世界经济发展和社会进步的同时,也在外层空间留下了数千个大型物体,数万个中小型碎片和数亿个微粒物质. 相似文献
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对跑道侵入的分析和建议 总被引:1,自引:0,他引:1
引言据统计,空中交通管理中68%的事故发生在地面阶段。2003至2006财政年度,在美国NAS内的500多家机场共计发生了1306次跑道侵入事件,其中有4次导致了发生相撞事故。虽然这4起事故没 相似文献
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国防科工局空间碎片专家组 《航天器环境工程》2009,26(5):401-406
1 概况第27届iadc(the inter-agency space debris coordination committee,机构间空间碎片协调委员会)会议和第5届欧洲空间碎片会议(the 5th european conference on space debris,ucsd)于2009年3月24日至4月1日在德国达姆斯达特市的欧空局(esa)空间运行控制中心(the european space operations centre,esoc)举行,会议由esa主办,由意大利航天局(asi)、英国航天局(bnsc)、法国航天局(cnes)、德国航天局(dlr)、国际空间研究委员会(cospar)和国际宇航学会(iaa)协办,由esoc承办. 相似文献
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国际外空立法的发展与我国的外空政策和立法 总被引:1,自引:0,他引:1
近年来,外空的战略地位日益受到各国重视.外空不仅是国家战略和安全的重要空间、社会可持续发展的资源宝库、高科技的聚集点,也正在日益成为外空大国经济乃至世界经济发展新的增长点,许多国家已把外空作为其崛起的新机遇.当前.围绕着外空战略、安全、经济、资源利益等展开的政治和法律斗争值得重视和关注. 相似文献
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A joint swing test on the 2m-diameter solid booster flexible joint and a 20k W power level electromechanical servo system developed by CALT and the Academy of Aerospace Solid Propulsion Technology(AASPT)together has been completed recently.The testing included dynamic and static characteristic verifica- 相似文献
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《中国航天(英文版)》2015,(1):21
<正>Chang’e 3 lunar lander conducted extended tests on the surface of the moon after awakening from its dormancy.It was announced in the late of January that the pointing mechanism of the cameras onboard Chang’e 3 underwent extended tests to confirm the moving performance and limit switch triggering of the pointing mechanism under various status while pitching,moving forward and backward.According to the analysis derived from the remote 相似文献
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《中国航天(英文版)》2015,(2):54
On May 8,2015,under the witness of Chinese President XI Jinping and Russian Federation President Vladimir Putin,on behalf of two countries,China Satellite Navigation System Committee Chairman WANG Li and Russian Federal Space Agency Chief Igor Komarov signed the"China’s Bei Dou System and Russian Glonass System Compatibility and Interoperability Cooperation Joint Statement".It indicates that the navigation cooperation be- 相似文献
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CUI Enhui 《中国航天(英文版)》2015,(2):36-41
The LM-3C/Yuanzheng 1 launch vehicle lifted off from the Xichang Satellite Launch Center at21:52 Beijing time on March 30.The Yuanzheng1 upper stage delivered its passenger,the 17th Bei Dou navigation satellite,directly to the inclined geosynchronous orbit.China’s first"space shuttle bus"Yuanzheng1 upper stage completed its inaugural flight successfully. 相似文献
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SHEN Rui 《中国航天(英文版)》2015,(2):32
With the rapid growth of microsatellites,customers are becoming diversified from a single country to many countries,to departments,units,even individuals.Many universities,enterprises and individuals rather than a few monopolizing institutes are involved in the microsatellite development. 相似文献
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2ND TEST RUN OF POWER SYSTEM OF LM-5 1ST STAGE COMPLETED The second test run of the power system of the 1st stage of LM-5 was completed in Beijing at 16:00 Beijing time on March 23.This was the second test since the first one was conducted on February 9 to further verify the correctness and reliability of the 1st stage 相似文献