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101.
空间站舱外载荷平台支持部署众多不同类型的载荷, 为开展大规模空间科学研究提供了机会. 但随着舱外载荷数量及相应任务量的不断增加, 且在受限于资源约束的情况下, 需要制定科学合理的任务规划, 以提高舱外载荷的工作效率. 针对舱外多载荷运行任务规划方法, 深入分析了国际空间站舱外载荷任务规划现状, 重点分析了其舱外载荷平台、载荷类型及特点和多载荷运行任务规划方法, 分析当前任务规划策略、方法及未来发展方向. 根据中国空间站舱外载荷平台特点, 从载荷总体设计和运行任务规划方法等方面为中国空间站后续舱外多载荷系统运行任务规划提供参考和建议. 相似文献
102.
S.Y. Chung P. Ehrenfreund J.D. Rummel N. Peter 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2010
A more flexible policy basis from which to manage our planet in the 21st century is desirable. As one contribution, we note that synergies between space exploration and the preservation of our habitat exist, and that protecting life on Earth requires similar concepts and information as investigations of life beyond the Earth, including the expansion of human presence in space. Instrumentation and data handling to observe both planetary objects and planet Earth are based on similar techniques. Moreover, while planetary surface operations are conducted under different conditions, the technology to probe the surface and subsurface of both the Earth and other planets requires similar tools, such as radar, seismometers, and drilling devices. The Earth observation community has developed some exemplary tools and has featured successful international cooperation in data handling and sharing that could be equally well applied to robotic planetary exploration. Here we propose a network involving both communities that will enable the interchange of scientific insights and the development of new policies and management strategies. Those tools can provide a vital forum through which the management of this planet can be assisted, and in which a new bridge between the Earth-centric and space-centric communities can be built. 相似文献
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民用飞机舱门挡块载荷研究 总被引:1,自引:0,他引:1
介绍了民用飞机半堵塞式舱门挡块的作用,提出一种全新的挡块设计过程,在结构部门内部进行信息的内反馈,预先对挡块进行载荷计算和分析再转交给强度部门。针对挡块载荷计算问题给出了计算方法,给出了在结构部门内部根据载荷计算结果进行修改挡块布置方式的方法,并给出了一个挡块布置和载荷计算的设计实例。使用提出的舱门挡块设计过程和方法,可以减少挡块设计在结构部门和强度部门之间的迭代次数,提高设计效率。 相似文献
105.
民用飞机的商载航程能力满足市场需求对民用飞机的成功至关重要,航程能力设计指标是否合理需要在方案初期结合市场特征进行全面的评估。通过推导商载航程图边界线的解析方程,建立了飞机总体参数与商载航程图的关系,构建了一种通过设计指标中的标准商载、设计航程以及特征重量参数即可快速准确求解出飞机商载航程图的方法。使得在性能计算输入参数有限的方案初期,仅通过基本的设计指标就能反映较为全面的商载航程能力,可应用于方案阶段基于市场需求的方案快速迭代,优化飞机设计指标。 相似文献
106.
S. Torii K. Yoshida K. Kasahara T. Tamura J. Chang for the CALET Collaboration 《Advances in Space Research (includes Cospar's Information Bulletin, Space Research Today)》2008,41(12):2032-2036
The CALorimetric Electron Telescope, CALET, mission is proposed for the observation of high-energy electrons and gamma-rays at the Exposed Facility of the Japanese Experiment Module on the International Space Station. The CALET has a capability to observe the electrons (without separation between e+ and e−) in 1 GeV–10 TeV and the gamma-rays in 20 MeV–several TeV with a high-energy resolution of 2% at 100 GeV, a good angular resolution of 0.06 degree at 100 GeV, and a high proton-rejection power of nearly 106. The CALET has a geometrical factor of 1 m2sr, and the observation period is expected for more than three years. The very precise measurement of electrons enables us to detect a distinctive feature in the energy spectrum caused from WIMP dark matter in the Galactic halo. The excellent energy resolution of CALET, which is much better than GLAST or air Cherenkov telescopes over 10 GeV, enables us to detect gamma-ray lines in the sub-TeV region from WIMP dark matter annihilations. The CALET has, therefore, a unique capability to search for WIMP dark matter by the hybrid observations of electrons and gamma-rays. 相似文献
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The Geospace Double Star Project (DSP) consists of two small satellites operating in the near-earth equatorial and polar regions, respectively. The goals of DSP are: (1) to provide high-resolution field, particle, and wave measurements in some important near-earth active regions which have not been covered by current ISTP missions, such as the near-earth plasma sheet and its boundary layer, the ring current, the radiation belts, the dayside magnetopause boundary layer, and the polar region; (2) to investigate the trigger mechanisms of magnetic storms, magnetospheric substorms, and magnetospheric particle events,as well as the responses of geospace storms to solar activities and interplanetary disturbances; (3) to set up the models describing the spatial and temporal variations of the near-earth space environment.To realize the above goals, the equatorial satellite TC-1 and the polar satellite TC-2 will accommodate, respectively, eight instruments on board. TC-1was launched successfully in December 2003 while the polar satellite (TC-2)will be launched in July 2004. The orbit of the equatorial satellite TC-1 consists of a perigee at 550 km, an apogee at 60 000 km, and an inclination of about 28.5; while the orbit of the polar satellite will have a perigee of 700 km, an apogee of 40 000 km, and an inclination of about 90. The two satellites will take coordinated measurements with Cluster Ⅱ and will first form a \"six-point exploration\" in geospace.The operational status of TC-1 are introduced in this paper. 相似文献
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