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我国载人航天实行“三步走”的发展战略。神舟六号载人航天飞行是在神舟五号飞船实现了我国载人航天技术的历史性突破,解决了载人航天的基本技术的基础上的一次承上启下的重要飞行任务,神舟六号载人航天飞行任务的圆满成功,标志着我国载人航天工程一期工程目标的胜利实现,也为实现第二步战略目标奠定了基础。第二步是除继续用载人飞船进行对地观测和空间实验外,重点要完成出舱活动、空间交会对接试验和发展长期自主飞行、有人照料的空间实验室。那么提到出舱活动,必然会涉及到舱外航天服,舱外航天服与神舟五号和六号航天员使用的舱内航天服有什么不同呢? 相似文献
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2013年6月11日17时38分,神舟十号飞船承载着3名航天员在酒泉卫星发射中心由长征二号F运载火箭成功发射,准确进入轨道。在此后的15天时间里,天宫一号与神舟十号载人飞行实现了"准确进入轨道,精准操控对接,稳定组合运行,健康在轨驻留,安全顺利返回"的任务目标。以天宫一号与神舟十号载人飞行任务圆满成功为标志,中国载人航天工程第二步第一阶段任务完美收官,将全面进入载人空间站工程建设阶段。 相似文献
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赵乐 《世界航空航天博览》2005,(6):66-67
将在2005年下半年进行的“神舟”六号飞船载人航天飞行,计划由两名航天员进行多天飞行,并在轨道舱里开展空间技术试验。航天员系统负责人介绍说,“神舟”六号飞行对航天员的训练提出了更高的要求,载人航天飞行面临的风险性也增加了许多,为此,正在积极准备“神舟”六号飞船载人航天飞行任务的总装备部航天员大队全体航天员,牢记肩负的使命,注重立足本职岗位强素质、练本领,使载人航天飞行训练取得显著成果。 相似文献
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Progress on Microgravity Sciences in China 总被引:1,自引:1,他引:1
The main progress of the research activities on microgravity fluid physics, combustion, biotechnology research and fundamental Physics in China are briefly summarized in the present paper. The major space missions and experimental results obtained on board the Chinese recoverable/nonrecoverable satellites and the Chinese manned spaceship named "Shen Zhou" are presented summarily. The recent main activities of the ground-based studies in China are introduced in brief. 相似文献
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Cheng Yang Yuehui LiZhijie Zhang Chen LuoYongqing Tong Guohua ZhouPingli Xie Jinyue HuGuancheng Li 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2008
It is well recognized that harsh outer space environment, consisting of microgravity and radiation, poses significant health risks for human cells. To investigate potential effects of the space environment exposure on cancer cells we examined the biological changes in Caski cells carried by the “Shen Zhou IV” spaceship. After exposure for 7 days in spaceflight, 1440 survival subclonal cell lines were established and 4 cell lines were screened. 44F10 and 17E3 were selected because of their increased cell proliferation and tumorigenesis, while 48A9 and 31F2 had slower cytological events. Experiments with cell proliferation assay, flow cytometry, soft agar assay, tumorigenesis assay and DNA microarray analysis have shown that selected cell lines presented multiple biological changes in cell morphology, cell growth, tumorigenicity and gene expression. These results suggest that space environment exposure can make significant biological impact on cancer cells and provide an entry point to find the immunological target of tumorigenesis. 相似文献
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载人火星探测飞行方案 总被引:1,自引:0,他引:1
对世界各国载人火星探测的研究情况进行了简要综述,研究了国内外有关载人火星探测飞行方案,提出了载人火星探测方案确定的原则和方案基本思想.给出了一种载人火星探测飞行方案的总体设计,包括飞行轨道方案和载人火星飞船方案等.尤其对轨道设计的重要的两个参数——速度增量和飞行时间进行了详细计算.最后给出了飞行轨道选择、火星飞船从地球到火星和从火星返回地球等的轨道方案和火星飞船各组成部分方案的详细设计结果. 相似文献
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H Bucker R Facius 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》1986,6(11):305-314
With the advent of a permanent manned space station the longstanding problems of radiation protection in manned spaceflight have acquired an immediacy. This paper endeavors to emphasize the gaps of our knowledge which must be closed for effective radiation protection. The information that is required includes the accurate determination of the exposure inside the space station to the various components of tile ionizing radiation, the evaluation of the biological importance of the different radiation qualities and the depth dose distribution of the less penetrating component. There is also the possibility of an interaction with weightlessness. It is necessary to establish adequate radiation protection standards and a system of dosimetric surveillance. There is a need for studies of possible methods of hardening selective shielding of the space station. Spaceflight experiments, which might contribute to the solution of some of these problems are discussed. 相似文献
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空间科学实验柜被动式减振系统研究 总被引:2,自引:0,他引:2
载人航天二期我国将发展短期有人照料的空间实验室,将开展一系列空间科学实验.国际空间站和我国神舟飞船实际微重力水平测量结果表明,需采取必要的减振措施才能满足特殊科学实验要求,鉴于此对空间科学实验柜被动式减振系统进行了研究和设计.根据空间科学实验柜在载人航天器内的实际安放状态,对其进行了减振布局.将实验柜本身作为刚体,建立6自由度的减振系统动力学模型,然后在ADAMS中建立了空间科学实验柜及减振系统三维实体模型,对减振系统进行仿真,得出系统时域、频域及随机输入下的响应特性.对减振系统参数进行优化,提高了系统的减振效果. 相似文献
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Alankrita Isha Mrigakshi Daniel Matthiä Thomas Berger Günther Reitz Robert F. Wimmer-Schweingruber 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2013
The radiation environment in space is a major concern for human spaceflight because of the adverse effects of high levels of radiation on astronauts’ health. Therefore, it is essential to perform radiation risk assessments already during the concept studies of a manned mission. Galactic Cosmic Rays (GCR) have been identified to be one of the primary sources of radiation exposure in space. 相似文献
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王希季 《中国空间科学技术》1991,11(2):35-38
空间站与其它航天器相比,有很多优越性。文内详细地阐述了空间站的四大特征:①先入轨后上人,既提高了安全保障,又简化了研制过程;②具有自主补给消耗品、检修和更换设备的能力;③具有长期航天的素质;④具有可变更和可扩大其功能的性质。这些特征及其优越性,充分体现了空间站在未来载人航天活动中的地位和作用。 相似文献
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The Space Environment Prediction Center (SEPC) of the Center for Space Science and Applied Research of the Chinese Academy of Sciences (CSSAR, CAS)took on the mission of offering the space environment parameters which may be of use to the safety of manned spacecraft. In order to complete the space environment safety guarantee mission for SZ-4 and SZ-5, SEPC improved the space environment monitoring system, database system, prediction result display system, prediction implementation system, etc. For guaranteeing the safety of the airship and cosmonaut in the first manned SZ-5, flying experiment mission,SEPC developed the software for analyzing radiation dose and early-warning software for large debris collision with SZ-5. Three months before the flights of SZ-4 and SZ-5, SEPC began to predict the safe launch period in view of the space environment, and offered timely and valid reference opinions for selecting the safety period. Especially during the mission of SZ-5, SEPC analyzed the space high-energy environment in a pre-arranged orbit and abnormal orbit andevaluated the radiation dose which cosmonauts may encounter in space. The evaluation offered an important reference for cosmonaut safety and decisionmaking in the SZ-5 mission. The calculation of the distribution of large debris and the collision risk assessment at different orbit entry times for SZ-5 provided an important base for the superior department to make flight decisions. 相似文献
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中国空间站旨在进行大量在轨科学实验和空间应用研究,在轨保障是支持空间站在全寿命周期内完成载人航天任务的重要途径.传统地面制造及上行补给方式难以满足较大规模应用的需求,亟需一种创新性的保障模式突破资源瓶颈,空间增材制造技术具有极大的潜力实现即造即用的资源保障模式.本文根据空间增材制造技术的最新研究进展,结合中国空间站和载人深空探测任务需求,对空间增材制造技术的在轨应用模式进行分析,提出了中国空间增材制造技术未来发展所面临的问题和解决途径. 相似文献