Chang the third probe, will hover at 100 m from month | Chang | third | detector to the Moon _ news
December 14, according to Chang e third mission official microblog Tower ", third" message, December 14, 2013 to become immortal, the third probe Lunar soft landing will be implemented.
At present, the ongoing probes, Moon Goddess third, Central State normal, snagged after the implementation of Lunar soft landing tonight, China is expected to become the world's third country to achieve Lunar soft landing.
Falling Moon is expected to take 12 minutes. In the thrust of 7,500 cattle under China's first space variable thrust engine braking to become immortal, the third falling from 15 kilometres from months to implement dynamic, relative speed is gradually reduced from 1.7 kilometers per second to zero. Detector will hover at 100 m from months, using sensors to observe the landing zone in order to avoid obstacles, select a landing site.
Completion of this process depends mainly on the probe independently, almost zero possibility of manual intervention.
Chang the third moon Rainbow Bay area region locking. Communication, sunlight is better, the relatively flat terrain, human detectors had never previously visited. Chang was previously second to this area for ultra high resolution stereoscopic imaging, Chang, third landing success "Pathfinder". Nevertheless, Moon rocks, craters, ditches and other local unknown landscape, may still have an impact on landing.
(Original title: Chang-detector will be implemented shortly after 21 o'clock today, third moon landing)
(Edit: SN098)
December 14, 2013 China News Network
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嫦娥三号探测器将在距月面100米处悬停|嫦娥三号|探测器|月球_新闻资讯
中新网12月14日电 据嫦娥三号任务官方微博“嫦娥三号”消息，2013年12月14日21时许，嫦娥三号探测器将实施月面软着陆。
目前，正在进行环月飞行的嫦娥三号探测器状态正常，今晚择机实施月面软着陆后，中国可望成为世界上第三个实现月面软着陆的国家。
落月预计需要12分钟。在推力为7500牛的中国首台变推力空间发动机制动下，嫦娥三号将从距月面15公里处实施动力下降，相对速度从每秒1.7公里逐渐减为零。探测器还将在距月面100米处悬停，利用敏感器对着陆区进行观测，以避开障碍物、选择着陆点。
这一过程主要靠探测器自主完成，人工干预的可能性几乎为零。
嫦娥三号落月区域锁定虹湾区。这里通讯、日照条件较好，地形相对平坦，此前的人类探测器从未造访。嫦娥二号曾对这一区域进行了超高分辨率立体成像，为嫦娥三号软着陆成功“探路”。尽管如此，月石、月坑、壕沟等局部未知地貌，仍然可能对软着陆造成影响。
(原标题：嫦娥三号探测器将于今日21时许实施月面软着陆)
（编辑：SN098）
2013年12月14日14:17
中国新闻网
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