日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
China / Society

Lunar rover is 'awake' but faults continue

By Zhao Lei (China Daily) Updated: 2014-07-21 07:34

China's first lunar rover, Yutu, or Jade Rabbit, is still "alive" despite the malfunction of some of its equipment, according to a senior space scientist.

"Yutu has been woken up after the past dormancy, but the problems still exist," Wu Weiren, chief designer of China's lunar probe project, told Xinhua News Agency in Hong Kong.

Wu was to attend an exhibition set to open on Monday in Hong Kong that features the achievements China has made in its lunar exploration project.

He said the rover will embrace its eighth "working day", which is about 14 Earth days, in an abnormal state caused by mechanical failures, noting that "fortunately, the rover has completed its designated scientific and engineering tasks".

During the lunar night, there is no sunlight to provide power to Yutu's solar panel, and the extremely low temperatures would damage its delicate electronics, so the rover must "hibernate".

The 140-kilogram, six-wheeled Yutu, part of the Chang'e-3 lunar probe, has outlived its designed lifespan of three months since it reached the moon in mid-December. Using its scientific apparatus, the rover has analyzed major elements on the lunar surface and studied mineral resources.

However, after nearly six weeks of operation, the moon buggy reported a mechanical control problem on Jan 25 before entering its second dormancy.

Since then, it has been unable to move any farther, remaining about 20 meters southwest of where it landed. The antenna and solar panels cannot be folded, either.

Chinese engineers blamed the problem on the "complicated lunar surface environment".

Related news

Earlier launch possible for space station modules

Moon rover designer looks to Mars

Zhang Yuhua, deputy head of Yutu's design team, said experts have concluded that the rover was probably damaged by large rocks when it was moving. She said the landing site's environment was even worse than scientists had expected.

It has become virtually impossible to resolve the mechanical failures, given that many parts on Yutu have approached the end of their designed lifespan, Zhang said.

The Chang'e-3 probe, which landed on the moon on Dec 14, is part of the second phase of China's current lunar program that includes orbiting, landing and returning to Earth. It follows the success of the Chang'e-1 mission in 2007 and Chang'e-2 mission in 2010.

Chinese scientists and engineers are now focusing on the third step of the program, namely landing on the moon and returning to Earth with samples extracted from the surface, Wu said.

The mission will be conducted by the Chang'e-5 probe around 2020, he said, adding that Chang'e-5 will be transported by the nation's first heavy-lift rocket, the Long March-5, in the new launch center at Wenchang on the island province of Hainan.

Development of the Long March-5 and the construction of the Wenchang launch center are faring well, according to Liu Jianzhong, deputy designer of the lunar program's rocket system.

Contact the writer at zhaolei@chinadaily.com.cn

Highlights
Hot Topics
...
主站蜘蛛池模板: 久久亚洲网 | 成人一区视频 | 国产有码在线观看 | 好吊视频一区二区三区四区 | 毛片黄片免费看 | 毛片网站免费观看 | 国产精品3 | 91tv国产成人福利 | 婷婷色伊人 | 黄色网免费看 | 中文在线资源天堂 | 男人午夜网站 | 欧美一级免费看 | 在线综合视频 | 欧美一级在线播放 | 亚洲欧美日韩成人在线 | 久久久精品视频在线观看 | 欧美另类精品 | 亚洲第一男人天堂 | 久久国产免费观看 | 日韩爱爱视频 | 99久久久国产精品 | 中国a一片一级一片 | 97国产 | 精品国产户外野外 | 久久伊人国产 | 视频1区2区| 自拍偷拍第二页 | 三级黄色短视频 | 亚洲成a人片 | 青青草视频在线看 | 三年中文免费观看大全动漫 | 欧美又粗又长 | 国产综合第一页 | 国产欧美精品在线观看 | 色播五月激情 | 久久国产一区二区 | 精品久久久久久久久久久久久 | 欧美一级久久 | 亚洲xxxx天美 | 日本天堂免费 |