神舟7号的介绍
发布网友
发布时间：2022-04-28 17:59
共3个回答
热心网友
时间：2022-06-22 18:10
王兆耀2008年9月24日下午14时30分在酒泉卫星发射中心的“神舟七号”载人航天飞行任务总指挥部新闻发布会上，受“神舟七号”载人航天飞行总指挥部的委托宣布：9月25日21时07分至22时27分直接发射，进行载人航天飞行。届时中国的航天员将首次出舱来进行太空行走。当前，气闸舱等核心技术难关已被攻克，整个飞船已进入综合测试阶段，用于发射神舟七号飞船的长征二号F火箭在2007年12月底前完成全箭总装。据悉，“神舟七号”时的太空行走对航天员的考核要求更加高。由于航天服内的压力比正常情况下低，有可能会使人体组织内的氮气释放，在血管内形成气栓，导致减压病，甚至危及宇航员的生命! 因此航天员在穿好航天服以后，必须在气闸舱内充分吸氧，协助工作的航天员回到内舱（即轨道舱），关闭内舱门，然后气闸舱开始泄压到真空，与飞船外的真空状态保持一致，此时航天员可以出舱活动。而完成舱外任务回到舱内时，还要对航天服进行一定的减压，再对气闸舱充气。
“航天员出舱活动是一项高难度、高风险的活动。”专家介绍，“神舟七号”时的太空行走要求航天员必须在地面做充分的试验和训练，其地面训练一般在一个对比重有一定要求的中性水池里进行。这种水池通常建在大型的试验房里面，把航天器放在水池中，利用水的浮力模拟太空的失重现象，然后航天员在水池里面进行出入舱和舱外操作训练。
中国载人航天工程副总指挥张庆伟表示，未来的神舟七号飞船，不会是神舟六号的简单重复，突破许多关键技术。发射神舟七号飞船的仍然是长征二号F型运载火箭，此前这种火箭已经成功地将六艘神舟飞船送入太空，具有成熟的技术基础。目前新一枚运载火箭元器件的采购与生产已经展开，火箭总设计师荆木春说，这一次他们将采用质量更高的元器件。针对前几发火箭的飞行情况，科研人员还将对这枚火箭进行局部改进，来进一步提高火箭的可靠性。此外，他们还考虑在火箭上增加一些摄像头。
从神舟七号开始，我国进入载人航天二期工程。在这一阶段里，将陆续实现航天员出舱行走、空间交会对接等科学目标。整个二期工程的所有发射任务全部由长二F火箭担任。
【细节信息】
航天员像开飞机一样驾驶“神七”
中国载人飞船系统总设计师张柏楠介绍说，“神六”两名航天员13日先后进行开关舱门、穿脱压力服、穿舱、抽取冷凝水四大项“在轨干扰力”实验，结果表明航天员较大幅度动作对飞船姿态影响微小，飞船姿态保持良好。飞行在太空中的航天员费俊龙获知结果后，第二天就在飞船上连续做了4个前滚翻。张柏楠说，这是航天员自己在游戏，不是事先安排的。此次空间飞行结果表明，从刚升空到准备返回，费俊龙和聂海胜任何时间都能正确发出指令、准确控制各种设备，舱门开关等动作较大的操作也能一次成功。张柏楠介绍说，有了这次实验的基础，“神七”将安排航天员“像驾驶飞机一样驾驶飞船”！
“神七”航天员准备展开太空行走
戚发轫院士认为，人上天不是旅游，是完成对空间环境的研究、开发、利用。以前杨利伟只是第一步去试一试，要想完成这个任务必须多人多天，比方说要去组装一个空间站或者修理一个卫星，人就得出舱，出舱起码得两个人。以后要去空间站坐运输工具去，要对空间站进行对接，打开门以后把里面的人接出来。从国外来讲，他们花了很多次的试验来做这个事情，现在按照我们的计划，“神七”希望人能够出舱，老百姓的话叫空间行走。“当然出了舱还有离舱多远？也可以离得近一点儿，也可以离得远一点儿。”戚发轫院士说，下一步我国就要解决交会对接，交会对接起码得有3个人。所以我们飞船要有这个能力：3个人在天上待7天，上去的时候可以带300公斤的东西，回来的时候可以带一百公斤的东西。假如这次很成功，就不需要再试两人多天，那我们下次就出舱了。戚发轫院士认为，将要出舱的“神七”必须在神舟六号的基础上解决两个比较大的问题。现在航天员有一个密封舱，在这个舱里穿航天服。离开这个舱就没有了空气，所以航天服本身就必须能供给氧气。第二是没有温度控制时，航天服能保证他正常的温度，所以这个航天服就相当于一个小型的密封舱，这方面挺复杂的。更高级的航天服还可以装上发动机，一点火就走了，相当于一个小飞船一样，要出舱得具备这几个条件。戚发轫院士说，将来我们船上要有一个气闸舱，人穿好航天服进去，把门关上，把外面的门打开出去，假如一打开门气就放光了，所以有一个气闸舱。“我只是说两个主要的，作为航天员有一个舱外的航天服，作为我们的飞船来讲，必须得有一个气闸舱，要保证原来的舱里一定有一个大气压。”
热心网友
时间：2022-06-22 18:11
热心网友
时间：2022-06-22 18:11
Wang Zhaoyao September 24, 2008 pm 2:30 p.m. at the Jiuquan Satellite Launch Center of the "Shenzhou VII" manned space mission headquarters news conference, the "Shenzhou VII" manned space flight of the General Command Commission announced: at 9:07 p.m. on September 25 to 22:27 direct launch a manned space flight. By then China's astronauts will for the first time for extravehicular space walk. At present, the airlock, and other core technology has been difficult to capture the entire spacecraft has entered the phase of the comprehensive test, used to launch Shenzhou VII spacecraft II F rocket in the long march by the end of December 2007 to complete the entire assembly arrow. It is learned that the "Shenzhou VII" of the astronauts on space walk of more high-examination request. As the pressure inside the spacesuit than normally low, there may human tissue inside the release of nitrogen in the formation of air embolism within blood vessels, leading to decompression sickness, and even endanger the lives of astronauts! Therefore, the astronauts put on spacesuits After the cabin air brake must be fully oxygen to assist the work of the astronauts inside the capsule to return to (that is, the orbital mole) to close the door in, and then airlock to begin relief vacuum, a vacuum of outer space and aligned state At this time, the astronauts can extravehicular activity. The completion of the extravehicular mission back to the cabin, but also on the spacesuit for a certain degree of relief, and then on an inflatable airlock.
"Astronaut extravehicular activity is a difficult, high-risk activities." Experts, "Shenzhou VII" of the spacewalk the astronauts have to ask the ground to do adequate testing and training, the training ground in a general A certain proportion of requests for the neutral pool. This pond is usually built on large-scale test of the room inside the spacecraft on the water, the buoyancy of water use simulation of the weightlessness of space, and then astronauts inside the pool and deck EVAs carried out training operations.
China's manned space program, said Zhang Qingwei, deputy commander-in-chief, the future of the Shenzhou VII spacecraft, Shenzhou VI will not be a simple repeat, a number of breakthroughs in key technologies. The launch of the Shenzhou VII spacecraft is still the Long March II-F carrier rocket, after the carrier rocket has successfully Shenzhou-6 spacecraft into space, with mature technology base. At present, a new launch vehicle parts procurement and proction has commenced, chief designer of the rocket Jing-chun said that this time they will be of higher quality components. For a few pre-made rocket flight, scientists will also improve the local rocket, to further improve the reliability of the rocket. In addition, they consider the increase in the number of rockets on camera.
Shenzhou VII from the beginning, our country has entered the second phase of manned space flight. At this stage, will be to achieve extravehicular astronauts to walk, space rendezvous and docking, and other scientific objectives. All throughout the second phase of the launch by two F long as the rocket.
Key details of the information】
Astronauts fly the same as driving, "the seven gods"
The chief architect of China's manned spacecraft system, Zhang Bonan said, "Shenzhou VI" on the 13th, two astronauts have carried out door switches, pressure from clothes to wear, wear tank, the condensed water taken from the four major items of "interference in orbit force" experiment, The results showed that the astronauts on the spacecraft moves a big impact on small gesture, the spacecraft to maintain good posture. Flying in space, the astronauts Fei Junlong informed of the results, on the second day in a row on the spacecraft made a pre-roll 4. Zhang Bonan said that this was the astronauts in their own game, not pre-arranged. The results show that space flight, took off from just ready to return, Fei Junlong and Nie Haisheng at any time be able to give directions to the correct, accurate control of a variety of equipment, door switches, and other operations movements can be more successful. Zhang Bonan said that with the experimental basis, "the seven gods," the astronauts will be "like a spaceship to fly as driving"!
"God seven" astronauts begin spacewalk to prepare
Qi Faren academician of the view that people not travel into space is the completion of the space environment for research, development and utilization. Yang previously only the first step to try to complete this task must be more than a number of days, for example, go to a space station assembly or repair a satellite, who have emerged from the capsule, the capsule was at least two people. After going to sit means of transport to the space station, to the space station for docking, opened the door to the future of the people inside then out. From abroad, they spent a lot of times the test to do this thing, in accordance with our plans, "the seven gods," one can hope that the exits, so people called to walk in space. "Of course there is a cabin far away from the cabin? Can get away from the past a little, can be a little Li Deyuan." Qi Faren Academy of Sciences said that China's next step will be to address rendezvous and docking, rendezvous and docking there were at least 3 indivials . That is why we have a spacecraft capable of: 3 indivials in the sky to be 7 days, when up to 300 kg with things, the time may come back with 100 kg. If this is successful, you do not need to try more than two days, then we are next to the exits. Qi Faren academician of the view that emerged from the capsule to be the "seven gods" of the Shenzhou VI must be resolved on the basis of two more. Astronauts now have a capsule in the cabins to wear spacesuits. To leave the cabin, there is no air, the spacesuit itself must be able to supply oxygen. The second is to control the temperature, the spacesuit, he can guarantee the normal temperature, so the spacesuit on the equivalent of a small capsule, this very complex. More advanced spacesuit can be fitted with engines that fire left, which is equivalent to a small space, to have emerged from the capsule with these conditions. Qi Faren Academy of Sciences said that in the future we have on board an airlock, astronauts were put into service, shut the door, open the door to the outside out and if I opened the door and shined on the air, so there is an airlock. "I only said that two major, as an astronaut's extravehicular spacesuit, as the spacecraft, must have a cabin air brake, it is necessary to ensure that the original cabins have a certain atmospheric pressure."
