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The author:(作者)aaa
published in(发表于) 2013/12/12 9:31:59
Successfully from the side of the Moon， Chang-third drop axle， prepare for landing

Xinhuanet, Beijing, December 10 (reporters Yu Xiaojie and Zuo Yuanfeng)-reporters learned from the Department of national defense science and technology industry, 10th, to become immortal, the third from the lunar orbit 100 km away from the fallen in recent months, some 15 km aposelene the elliptical orbit about 100 km. It is Chang, third book of moon landing preparations on track.

It is reported that the orbital maneuver is implemented in the side of the moon. At 18 o'clock sharp, the Beijing Aerospace command and control center injected attitude and orbit adjustment, Xiang Change third argument. 20:37, Chang e, third entering the region on the back of the moon. 21:20 to become immortal, the third engine ignition successfully started for orbit control. 21:24 to become immortal, the third back to the near side of the Moon, according to the ground control station to monitor data analysis to become immortal, the third, has grown from about 100 km from the lunar surface with an average height of the lunar orbit successfully entered in recent months about 15 km, apolune altitude of about 100 km elliptic orbit.

Chang-2nd third, launched from the Xichang satellite launch Center, has completed two orbits precisely mid-course corrections, braking in recent months and today's drop axle, snagged by the middle of this month is expected to implement lunar landing. This will be the first extraterrestrial object landing spacecraft.

3 years ago to become immortal, the pilot stars Chang, second once, third from 100 km x km lunar orbit lowered to 100 km away from the elliptical orbit, Rainbow Bay take a preselected landing zone for Chang, third in high resolution "close-up".

　　新华网北京12月10日电（记者余晓洁左元峰）记者从国家国防科技工业局获悉，10日21时20分，嫦娥三号从100公里×100公里的环月圆轨道，降至近月点约15公里、远月点约100公里的椭圆轨道。这是嫦娥三号预定的月面着陆准备轨道。

　　据悉，此次轨道机动是在月球背面实施的。18时整，北京航天飞行控制中心向嫦娥三号注入调姿和变轨参数。20时37分，嫦娥三号进入月球背面区域。21时20分，嫦娥三号发动机成功点火，开始实施变轨控制。21时24分，嫦娥三号重新回到月球正面，根据地面测控站监视数据分析判断，嫦娥三号已由距月面平均高度约100公里的环月圆轨道，成功进入近月点高度约15公里、远月点高度约100公里的椭圆轨道。

　　嫦娥三号2日在西昌卫星发射中心发射升空，先后精确完成了两次轨道中途修正、近月制动和今天的降轨，预计本月中旬择机实施月面软着陆。这将是我国航天器首次地外天体软着陆。

　　3年前，嫦娥三号的先导星嫦娥二号也曾经从100公里×100公里的环月圆轨道降至100公里×15公里的椭圆轨道，为嫦娥三号拍摄预选着陆区虹湾的高分辨率“特写”。

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