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 / Innovation

Mars probe makes its debut landing at Shanghai fair

By Luo Wangshu (chinadaily.com.cn) Updated: 2015-11-03 12:55

MANNED OR UNMANNED?

China has yet to start a manned deep-space exploration program, and experts hotly debate whether it's necessary to send humans into deep space, or just let robots do the job.

Guo Linli, a researcher with the China Academy of Space Technology (CAST), said humans will inevitably go deeper into space from near Earth orbit to the moon and then to Mars.

"Can robots replace humans to explore deep space? My view is that robots are suitable for repetitive, heavy loading, and fixed and known work. But it needs human wisdom to decide on unknown work that cannot be simulated in lab, such as surveying and choosing a site for a future lunar base," Guo said.

However, such ambitions come with a cost, and the biggest would be for the greatly increased scale of the spacecraft and rockets. It would need a heavy-lift launch vehicle with a capacity of more than 100 tonnes to send four astronauts to the moon, and environmental control and life support systems would be essential too, Guo said.

Compared with unmanned deep space exploration, manned missions would have fewer possible destinations and the cost and difficulties would be much greater. Currently, only the moon, Mars and asteroids are considered, Guo said.

Humans and robots will each have advantages, and will work together in exploring the deep space far into the future.

ASTEROID "ANTS"

In recent years, asteroids have become a focus of international space exploration. Scientists say asteroids hold materials that could unlock the secrets of the birth of the solar system and the origin of life.

Chinese experts are discussing the feasibility of sending a landing probe and retrieve samples from an asteroid.

But how could a probe land and move on an asteroid that might have an odd shape, almost zero gravity and complicated environment?

Zhang Wangjun, a senior CAST engineer, said wheeled robots like the U.S. Mars rover Curiosity have played an important role in space exploration. But robots with feet are more suitable for moving on hilly terrain with many obstacles.

"Robots with feet can avoid and cross obstacles more easily. We are researching two-feet, four-feet and six-feet robots. It seems that a six-feet robot has more advantages in mobility and flexibility in the complicated environment," Zhang said.

This finding echoes those in the United States, Europe and Japan, where researchers have developed robots imitating cockroaches, spiders and ants.

However, he said, current research only meets the industrial requirements. It is still a long way to go to adapting a robot to the environment of an asteroid.

Zhang has devised asteroid-probing robots like a pair of "ants" that can work independently or cooperatively.

 

Previous Page 1 2 Next Page

Highlights
Hot Topics
...
主站蜘蛛池模板: 日韩一区二区三区在线播放 | 久久久久久久久久久久久久 | 欧美日韩啪啪 | 天堂国产在线 | 久久精品视频国产 | 91丝袜美腿 | 色偷偷噜噜噜亚洲男人 | 狠狠干av | 婷婷亚洲天堂 | 大地资源网在线观看免费官网 | 欧美一级片在线 | 黄色777| 日韩av专区| 精品久久久久国产 | 欧美第一页在线 | 天天上天天干 | 午夜免费成人 | 欧美一级免费大片 | 国产精品久久久久av | 亚洲a视频在线观看 | 成年人在线视频 | 国产视频自拍一区 | 色网站免费看 | 极品盗摄国产盗摄合集 | 成人自拍视频在线观看 | 一区二区三区在线免费观看视频 | 国产永久免费观看 | 男人的天堂av网站 | 亚洲午夜免费视频 | china激情老汉69老头 | 91丨九色丨黑人外教 | 国产精品久久久视频 | 日日射天天操 | 欧美第一视频 | 黄色大片在线播放 | 精品国产乱码久久久久久久 | 亚洲天堂视频网 | 色婷婷九月 | 成人免费看 | 中文字幕精品视频在线观看 | 麻豆av在线播放 |