共查询到20条相似文献,搜索用时 46 毫秒
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<正>自国务院发布《2016中国的航天》白皮书以后,我国商业航天领域开始呈现蓬勃发展的态势,以商业遥感卫星星座、商业微小SAR卫星星座、低轨互联网卫星、商业运载火箭等为代表的商业航天各领域迅速发展,推动我国航天产业呈现新的发展态势。在航天技术进步的驱动下,商业航天规模化生产成为可能,发展商业航天产业,提升航天技术水平,对支撑我国成为航天强国具有重要意义。商业卫星产业是现代航天产业发展的时代所需,引领了一种全新的卫星研制生产和运营模式:(1)卫星研制周期短;(2)多星组网运行,快速部署,需求量大;(3)成本可控。电源系统是航天器的主要系统之一,为航天器的工作提供能量,是航天器的“心脏”,随着商业卫星有效载荷能力不断提升,电源分系统技术发展和生产更要适应新模式[1-3]。 相似文献
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4 月 23 日,2021 年中国航天大会航天产业发展与商业航天国际论坛在江苏南京举办.论坛以"创新机遇稳步发展"为主题,探讨火箭制造、卫星研制与生产、航天保险与融资,以及中美商业航天等多个领域的前沿技术和应用理念,研讨产业融合的思路、布局和途径,搭建航天产业与商业航天沟通交流平台. 相似文献
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<正>根据美国卫星工业协会(SIA)数据,2021年全球发射的商业卫星中,87%由美国公司制造。美国商业航天产业一直走在世界前列,2022年,美国拟制定商业航天活动新规则,以适应航天发展新时代要求,进一步推动商业航天发展。目前,在商业航天政策、发射服务、商业航天器制造与运营、投融资活动等方面,美国商业航天产业呈现出新的发展态势。 相似文献
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2013年,全球航天器发射数量再创新高,成功入轨航天器数量达到了208个。在军事航天领域,国外军用卫星发射数量较2012年也有大幅增长。国外军事航天在稳步发展的同时,也呈现出了一些新的变化和趋势,值得我们分析与研究。 相似文献
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China's manned spaceflight missions have been introduced briefly, and the research planning of space sciences for China's Space Station (CSS) has been presented with the topics in the research areas, including:life science and biotechnology, microgravity fluid physics and combustion science, space material science, fundamental physics, space astronomy and astrophysics, earth sciences and application, space physics and space environment, experiments of new space technology. The research facilities, experiment racks, and supporting system planned in CSS have been described, including:multifunctional optical facility, research facility of quantum and optic transmission, and a dozen of research racks for space sciences in pressurized module, etc. In the next decade, significant breakthroughs in space science and utilization will hopefully be achieved, and great contributions will be made to satisfy the need of the social development and people's daily life. 相似文献
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《空间科学学报》2016,(5)
China's manned spaceflight missions have been introduced briefly,and the research planning of space sciences for China's Space Station(CSS) has been presented with the topics in the research areas,including:life science and biotechnology,microgravity fluid physics and combustion science,space material science,fundamental physics,space astronomy and astrophysics,earth sciences and application,space physics and space environment,experiments of new space technology.The research facilities,experiment racks,and supporting system planned in CSS have been described,including:multifunctional optical facility,research facility of quantum and optic transmission,and a dozen of research racks for space sciences in pressurized module,etc.In the next decade,significant breakthroughs in space science and utilization will hopefully be achieved,and great contributions will be made to satisfy the need of the social development and people's daily life. 相似文献
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任务空间内空间机械臂的自适应控制 总被引:1,自引:0,他引:1
对于本体资态受控而位置不受控的空间机械臂系统,在任务空间内给出了一种自适应控制算法;证明了当系统存在参数不确定时,该算法不但可以保证末端执行器任务空间内位置轨迹跟踪误差的渐近收敛,而且还可保证关节空间内角偏差及角偏差速率的渐近收敛;仿真结果验证了算的有效性。 相似文献
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LIU Siqing ZHONG Qiuzhen GONG Jiancun SHI Liqin CHEN Dong MIAO Juan CAI Yanxia BAI Meng MA Wenzhen LI Zhitao LIU Fanghua CHEN Yanhong 《空间科学学报》2018,38(5):781-787
Strategic Priority Research Program on Space Science has gained remarkable achievements. Space Environment Prediction Center (SEPC) affiliated with the National Space Science Center (NSSC) has been providing space weather services and helps secure space missions. Presently, SEPC is capable to offer a variety of space weather services covering many phases of space science missions including planning, design, launch, and orbital operation. The service packages consist of space weather forecasts, warnings, and effect analysis that can be utilized to avoid potential space weather hazard or reduce the damage caused by space storms, space radiation exposure for example. Extensive solar storms that occurred over Chinese Ghost Festival (CGF) in September 2017 led to a large enhancement of the solar energetic particle flux at 1 AU, which affected the near Earth radiation environment and brought great threat to orbiting satellites. Based on the space weather service by SEPC, satellite ground support groups collaborating with the space Tracking, Telemetering and Command system (TT&C) team were able to take immediate measures to react to the CGF solar storm event. 相似文献
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正目前,商业航天正在与民用航天、军事航天一起,成为航天的重要组成部分,推动世界航天进入以全面商业化、大众创新和军民融合为特征的航天新时代—航天2.0(Space2.0)时代。世界商业航天发展有什么经验教训?中国商业航天面临怎样的机遇和挑战?1世界航天进入Space2.0时代20世纪,美苏两个大国的冷战是推动航天技术最初发展的主要动力。随着冷战结束和航天技术的逐 相似文献
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