www射-国产免费一级-欧美福利-亚洲成人福利-成人一区在线观看-亚州成人

   

Chinese first manned mission once threatened

(Xinhua)
Updated: 2007-08-13 15:28

BEIJING -- Chinese aerospace experts saved the country's first ever manned space mission as the spaceship was faced with lethal impact while flying through the communications blackout area before landing.


Yang Liwei, China's first space man, waves to the recovery teams after walking out of the return capsule of the Shenzhou V spaceship Thursday morning, October 16. [Xinhua/file]

The Xi'an Satellite Monitor and Control Center released recently for the first time the danger met by the spacecraft, Shenzhou V, and China's first astronaut Yang Liwei.

Dong Deyi, head of the Xi'an center, said in an interview with Xinhua that Yang lost every means to contact with the ground command and control headquarters as soon as entering in the aerosphere, which fell in the worst case scenario prepared by the space mission team.

Every spacecraft would be covered by plasma as running through the aerosphere, according to experts. The plasma obstructs communications between spacecraft and command and control center on the ground.

"Even radar could not capture any signal from the returning module," Dong said.

After the Shenzhou V went out of the blackout area, Dong said, the echo signals from the spaceship were still volatile which sufficiently threaten a safe landing of astronaut Yang.

The Xi'an center, which is responsible for every landing of the Shenzhou spaceships since 1999, ordered implementation of the optical guiding and tracking system instead of communication-guided landing control, Dong said.

The aerospace technologists used cinetheodolites on the ground to measure spacecraft position and record the movement of the Shenzhou V. Precise positioning of the spacecraft enabled officers to properly control the slow-down parachute which was vital to a soft landing.

However, the landing spot was nine kilometers east of the previously planned location, Dong said, citing that the rescue team reached astronaut Yang 12 minutes after his successful landing.

China began its clandestine manned space program in 1992, which was coded as the 921 Project. Since then, China has spent at least 20 billion yuan (US$2.64 billion) in the project and sent three astronauts into orbit.



Top China News  
Today's Top News  
Most Commented/Read Stories in 48 Hours
主站蜘蛛池模板: 日韩欧美一区二区三区不卡视频 | 天堂最新版 | 免费的a级毛片 | 亚洲精品午夜一区二区在线观看 | 乱人伦中文视频在线观看免费 | a级毛片免费观看在线播放 a级毛片免费看 | 精品中文字幕久久久久久 | 欧美一级片在线免费观看 | 4tube高清性欧美 | 加勒比色综合 | 亚洲一区二区影院 | 久久久久亚洲香蕉网 | 国产精品亚洲二区 | 亚洲美女黄视频 | 91精品视频免费 | 久操视频免费在线观看 | 欧美视频一区二区三区四区 | 高清毛片免费看 | 欧美三级视频在线观看 | 国产精品高清在线观看地址 | 欧美黑大粗硬毛片视频 | 亚洲一级香蕉视频 | 国产激情一级毛片久久久 | 国产国语对白一级毛片 | 久草最新在线 | 韩国毛片免费看 | 亚洲加勒比 | 久久久国产在线 | 国产成人女人视频在线观看 | 亚洲人免费视频 | 999久久久精品视频在线观看 | 成年女人在线观看片免费视频 | 欧美三级一区二区三区 | 一级毛片免费观看 | 综合亚洲欧美日韩一区二区 | 欧美h版成版在线观看 | 一级毛片在线播放免费 | 国内自拍视频一区二区三区 | 国产成人精品系列在线观看 | 青青自拍视频一区二区三区 | 精品欧美成人高清视频在线观看 |