Establishing and Evaluation of the Microgravity Level in the SJ-10 Recoverable Satellite

In order to fulfil the microgravity requirements for space experiments, improved technology for the microgravity environment is proposed, including that for raising the orbital altitude, optimizing the layout of the disturbance source, using IN-thrusters instead of 5 N-thrusters, etc. In addition, evaluation of the microgravity environment of the recoverable satellite was also conducted using on-orbit micro-vibration measurement, on-orbit experiment and data analysis technologies. The microgravity level of the SJ-l0 recoverable satellite in China is compared with the spacecraft used for carrying out space science experiments internationally. This paper describes the microgravity environment of the SJ- 10 recoverable satellite, and its importance for analysing space experimental results.

Four Decades' Development of China's Recoverable Satellites

This paper reviews the recoverable satellites China has developed over the past forty years.The main missions,technical specifications,scientific and technical experiments of these satellites,including the SJ-10 scientific experiment satellite launched on April 6,2016 are introduced.Recommendations for future technical upgrades for recoverable satellites are also proposed in the paper.

微重力单气泡沸腾实验研究

基于SJ-10返回式科学实验卫星单气泡沸腾(SOBER-SJ10)实验装置正交双CCD观测系统特征,开发了基于双目视觉算法的图像分析方法,对空间微重力环境单气泡沸腾实验模式下气泡生长过程进行了定量分析。基于加热面局部温度测点数据,分析了微重力单气泡生长过程中底部温度和热流密度的演化特征。微重力条件下,气泡底部接触线区域维持了高效的相变换热,通过底部接触线区域的蒸发-顶部气液界面的冷凝维持了微重力单气泡沸腾传热。图像与科学数据分析结果,包括微重力条件下单个气泡生长过程中气泡形态演化特征与生长气泡底部局部传热等数据,不仅揭示了微重力沸腾传热性能得以维持的细观机制,也为进一步发展沸腾气泡模型提供了可资校验的实测数据。

微重力科学实验卫星——“实践十号”

北京时间2016年4月6日1时38分04秒,酒泉卫星发射中心,"长征"二号丁运载火箭成功发射,在559秒后将中国科学卫星系列第二颗星——"实践十号"返回式科学实验卫星送入高度约250 km的圆轨道,卫星发射取得圆满成功。"实践十号"卫星在太空运行15天,装载着19项科学设施,共28项实验。实验内容涉及微重力流体物理、微重力燃烧、空间材料科学、空间辐射生物效应、重力生物学效应和空间生物技术6大方向。卫星的返回舱装载着全部9项生物学设备以及空间材料科学多功位炉和流体物理中的输运系数测量装置;而留轨舱中装载着其他8项微重力科学设施。