日韩精品久久一区二区三区_亚洲色图p_亚洲综合在线最大成人_国产中出在线观看_日韩免费_亚洲综合在线一区

Moon mission on the horizon

Updated: 2011-12-30 07:14

By Xin Dingding (China Daily)

  Comments() Print Mail Large Medium  Small 分享按鈕 0

Research into rocket for manned lunar landing part of national plan

BEIJING - Preliminary research on a "giant leap" to the moon has been included in the government's plans for the next five years, according to a white paper issued on Thursday.

The white paper, China's Space Activities in 2011, said that research on a heavy-thrust carrier rocket - vital for launching manned spacecraft to the moon - will be carried out in the next five years.

The white paper is the third one issued on space activities by the State Council Information Office. The other two were published in 2000 and 2006.

However, Zhang Wei, spokesman for the China National Space Administration, said that there is no timetable for a manned moon landing.

Experts said that despite China's achievements in manned spaceflight and lunar exploration it needs a different type of technology, especially for the launch, to land a man on the moon.

In the first manned lunar mission in 1969 the United States used a Saturn V launch vehicle, which can send a payload of 120 tons into low Earth orbit, to carry the 50-ton Apollo-11 to the moon, said Pang Zhihao, deputy editor-in-chief of the monthly publication Space International.

"Compared with manned capsules that orbit the Earth, spacecraft built for manned moon landings are much heavier and need to travel over longer distances. Therefore, a powerful launch vehicle is necessary," Pang said.

Currently the largest launcher in China, the Long March-5, is designed to send a maximum payload of 25 tons into near-Earth orbit and a payload of 10 tons into higher geo-stationary orbit. It will be used for transporting large satellites and sections of space stations.

However, it lacks the required thrust for a moon mission.

Enhancing space transport capability is one of China's goals for the next five years, Zhang said.

Scientists are now developing a new series of carriers, including Long March-5 and two other smaller rocket carriers, Long March-6 and 7.

Long March-6 will be a high-speed response launch vehicle. Long March-7 will be capable of carrying a payload of 5.5 tons.

A moon mission is not the only focus, Zhang said.

   Previous Page 1 2 Next Page  

主站蜘蛛池模板: 久久亚洲日本不卡一区二区 | 色tv国产 | cheaperapp.work直接访问 | 久久高清免费视频 | 免费亚洲视频在线观看 | 成人精品视频在线观看 | 精品国产三级a | 久久性| 久久久久成人精品 | 搡女人的高清免费视频 | 精品自拍视频 | 久996视频精品免费观看 | 添人人躁日日躁夜夜躁夜夜揉 | 成人毛片网站 | 日本久久网 | 欧美高清视频一区 | 国产高清在线精品一区二区三区 | 久久综合综合久久 | 色网站在线 | 欧美视频在线免费看 | 色婷婷导航 | 国产成人精品一区二区三区视频 | 九九久久99| 欧美在线一级精品 | 91制服| 日本欧美中文字幕人在线 | 在线观看视频91 | 一个人看aaaa免费中文 | 一级黄色大毛片 | 国产超级乱淫视频播放 | 在线免费毛片 | 五月婷婷中文 | 精品一区二区三区的国产在线观看 | 日本精品久久久久久久久免费 | 国产精品午夜电影 | 日日爱视频 | 深夜毛片 | 亚洲啪啪 | 久久精品伊人 | 婷婷六月天激情 | 欧美亚洲视频在线观看 |