China's first cargo spacecraft to the space lab "space filling"
China News Agency, Beijing, March 2 (Xinhua Zhang Su) China plans to launch in April "day boat first" cargo ship. CPPCC, China Aerospace Science and Technology Corporation Bao Weimin, Director of the science and Technology Committee said 2nd new in an exclusive interview with Xinhua, "day boat first" would be "temple on the second" twice the space lab in orbit raising.
"Raise, plus part of the propellant for the first time, separation and docking again, the second time you raise the remaining propellant added. "Bao Weimin said," smoking, pressurization, let liquids flow under the action of air pressure in the aircraft. ”
According to reports, raise on-orbit is called "space filling". Accomplished in the vast universe and unmanned precision docking, the work far better than the ground "come on" was difficult.
Bao Weimin, for example, propellant is volatile, "whenever you finish filling turned the residual propellant in the piping is clean". Also make sure that the interface seal in a low temperature environment, the propellant leaked, spontaneous combustion or pollution vehicle.
In response to the challenges, China has been on the ground for a large number of test, was also in "the long seventh" launch vehicle "flight" using "transparent box" verifying liquid flows and discharged under the weightlessness of space.
Bao Weimin said that this work is for the daqiaopulu of China's future space station construction, because the space station will run above ground between 380 and 400 km of track, under the influence of gravity and thin atmosphere, orbital decay can occur. Chinese-developed aircraft cannot be added in orbit, that is run out of fuels life expires. Only breakthrough "come on" technology, to ensure continuous and stable operation of the space station.
"Day boat first," is China's first cargo spacecraft, unlike escorts the astronaut "Shenzhou" series, "day boat" main function is "courier".
Bao Weimin, the "day boat" space using a modular design, and is very smart. "Day boat" is not just for the future of China's space station, carrying food, equipment and other supplies, can also live on the space station garbage and discarded items back to the atmosphere and burned.
Author: Zhang Su
(Editors: Zhu Pengying UN603)
2017-03-02 12:01:17
China News Network

中国首艘货运飞船将为空间实验室进行“太空加油”
中新社北京3月2日电  (记者 张素)中国计划在4月发射“天舟一号”货运飞船。中国政协委员、中国航天科技集团公司科技委员会主任包为民2日接受中新社记者专访时说，“天舟一号”将为“天宫二号”空间实验室进行两次在轨加注。
　　“第一次加注时先加一部分推进剂，分离后再对接，第二次加注时将剩余的推进剂加进去。”包为民说，“一边抽压，一边加压，在气压的作用下让液体流到飞行器里。”
　　据介绍，在轨加注被称为“太空加油”。在茫茫宇宙且无人操作的情况下完成精准对接，这项工作远比地面“加油”来得艰难。
　　包为民举例说，推进剂易挥发，“每次加注完要把管道里的剩余推进剂吹得很干净”。还要确保接口在低温环境里密封，推进剂如果泄露，就会自燃或污染飞行器。
　　为应对挑战，中国航天人已在地面进行大量试验，还曾在“长征七号”运载火箭“首飞”时利用“透明盒子”验证空间失重情况下液体流动及排出情况。
　　包为民说，这项工作是为未来中国空间站建设搭桥铺路，因为空间站将运行在距地面380至400公里的轨道上，受引力和稀薄大气影响，会出现轨道衰减。此前中国研制的飞行器无法在轨补加，即燃料用完则寿命到期。只有突破“加油”技术，才能确保空间站持续稳定运行。
　　“天舟一号”是中国首艘货运飞船，不同于护送航天员的“神舟”系列，“天舟”的主要功能是“送快递”。
　　包为民介绍，“天舟”舱位运用模块化设计，显得非常灵巧。“天舟”不仅可为未来的中国空间站运送食品、仪器等补给，还可将空间站上的生活垃圾及废弃物品带回大气层烧毁。
　　作者：张素
(责任编辑：朱鹏英 UN603)
2017-03-02 12:01:17
中国新闻网