少妇无码精品23p_亚洲一区无码电影在线观看网站 _悠悠色一区二区_中文字幕亚洲无码第36页

--- SEARCH ---
WEATHER
CHINA
INTERNATIONAL
BUSINESS
CULTURE
GOVERNMENT
SCI-TECH
ENVIRONMENT
LIFE
PEOPLE
TRAVEL
THIS WEEK
Learning Chinese
Learn to Cook Chinese Dishes
Exchange Rates


Hot Links
China Development Gateway
Chinese Embassies

Space Scientists over the Moon
Yuan Jiajun could never have dreamed 30 years ago while sitting on his father's shoulders star-gazing that he would grow up to become chief director of China's manned spacecraft system.

He no longer stared into the heavens looking for Dongfanghong -- the first Chinese-made satellite, which went into orbit in 1970 -- while singing The East is Red (whose Chinese title is also the name of the satellite).

Now, 40-year-old Yuan is busy preparing to blast China's first astronauts into space.

Yuan's preparations are on solid shoulders.

On January 5, Yuan and his colleagues successfully guided China's latest unmanned spacecraft -- Shenzhou IV -- to a safe landing in North China's Inner Mongolia.

It was the fourth consecutive triumph China had chalked up since 1999, when it catapulted its first unpiloted Shenzhou -- "Divine Vessel" in Chinese -- into space.

Yuan's boss, Hu Shixiang, a chief of China's manned space program, pointed out that Shenzhou IV was proof that China's expertise on manned flights had matured.

It is just a "matter of time" before the country stages manned missions, Hu said.

Many perceive the success to be symptomatic of China's progress after two decades of economic reform.

For Yuan, who graduated with a master's degree in aircraft design at the China Academy of Space Technology in 1987, the mission was just another step in China's push to become a space faring nation.

Quest for Space

Chinese people have long aspired to travel in space.

Many space museums throughout the world mention either Chinese legends about Chang'e, a young fairy who flew to the moon, or about Wan Hu, the first man believed to have blasted off 500 years ago by sitting on a chair rigged with two kites and 47 rockets.

China invented the gunpowder "rocket" -- the precursor of modern space rockets -- so it surely does not want to fall farther behind as space technology leaps forward in developed countries, according to Chinese space researchers.

"Space technology has opened up a new era for human exploration of outer space," Yuan said. "Humankind's activities in space will greatly promote social progress and profoundly influence society."

It was with such understanding and a public vow to contribute to the peaceful use of outer space, China began its space program.

It blasted its first artificial satellite -- Dongfanghong ("The East is Red") -- into orbit in 1970.

But it was not until 1992 that China formally embarked on its manned space program, said Yuan.

Between November 1999 and March 2002, the country launched three unmanned space flights.

By the time Shenzhou IV was launched on December 30 last year, China had developed the most complete system needed for a manned mission.

The Shenzhou IV craft embodied the country's most sophisticated and fullest preparations so far for getting Chinese astronauts into space, said Yuan.

Astronaut Training

To become familiar with the space vessel, China's would-be astronauts used the Shenzhou IV capsule for training for a week last April, Yuan revealed.

Before that, a corps of 14 astronauts picked from among hundreds of fighter pilots in China's air force had been training for years to ready themselves for the first trek into space.

They have been dubbed "taikonauts" -- the Chinese word for outer space being taikong -- and have each flown more than 1,000 hours in fighter jets. Two were sent to Russia's cosmonaut school.

The height and weight of the pilots, who are all around 30 years, would surprise many people.

They are 1.7 meters (5 feet 7 inches) tall and weigh 65 kilograms (143 pounds) on average.

In the limited room of a space vessel, shorter men can maneuver more flexibly and it is more cost-effective because they weigh less, Chinese space experts said.

Even with their extensive training, Yuan did not feel the pressure ease from his shoulders.

But he need not worry as hundreds of Chinese scientists involved in the mammoth manned space program have come to work alongside him.

In particular, they have focused on developing an innovative launch rocket and making Chinese spacecraft safe.

Absolute Safety

Yuan and his colleagues said that, when it comes to launching a piloted mission, absolute safety is critical.

In his meeting with the astronauts being trained, Premier Zhu Rongji was quoted as assuring them that China's spacecraft could send them to space safely and bring them back equally safely.

Liu Zhu-sheng, chief designer of China's Long March 2F rocket, said his team had made the most complex arrangements to ensure the booster was highly reliable.

Between October 1996 and the end of 2002, the Long March rocket series had made 27 consecutive successful launches -- including four for the unmanned Shenzhou flights, each time precisely lifting the payloads into pre-set orbits, Liu said.

But the previous achievements may not necessarily be a harbinger of subsequent triumph.

So, each time that the Long March 2F completed a mission, scientists would spare no effort to double-check major components and make improvements in safety and reliability.

Now, the rocket boasts 10 world-leading innovations and inventions, including the escape and fault-detecting and handling systems, which China independently developed to guarantee the safety of its astronauts, according to Liu.

For instance, at the top of the rocket is a kind of escape tower, which, in the event of an emergency, can lift the spacecraft below it in a split second to a safe landing field before the rocket explodes.

Further Consideration

Rockets aside, when engineers design the spacecraft itself, they incorporate design features details to make astronauts safe and relatively comfortable during their flights.

For example, a special thermal protection shield is able to maintain a cool temperature inside the space vehicle.

The heat-resistant shield guarantees a temperature of below 30 degrees centigrade inside the capsule when the outside temperature soars to hundreds of degrees, scientists said.

The Shenzhou spacecraft being developed for manned flight will fly for at least one day in space, said Qi Faren, the 69-year-old general designer of the Shenzhou spacecraft.

Qi, who graduated from the Beijing University of Aeronautics and Astronautics in 1957, said this will be longer than the first manned flight of the former Soviet Union, which lasted for 108 minutes.

The spacecraft will accommodate three people, he added.

After the re-entry module of China's spacecraft returns to Earth, the remaining part of the craft -- the orbital module -- will be able to keep working in space as an independent satellite carrying out tasks such as observation work.

In addition, China has so far managed to spend less money than the United States -- the second country after the former Soviet Union to put a human into space -- on its manned space industry.

"For the whole of the manned space industry, we have only spent 19 billion yuan (US$2.3 billion), while the United States spent US$8 billion on just one rocket system," said Zhang Qingwei, president of the China Aerospace Science and Technology Corp, without specifying.

Yuan has every reason to believe that the country's dream of manned space flight will soon become reality.

At the end of that dream, there will be others -- a space lab, space station and moon landing.

(China Daily January 16, 2003)

Shenzhou IV Flight Reaps Rich Scientific Fruits
'Shenzhou IV' Greatly Raises Its Measurement Accuracy
China's Space Program on Course: Official
Unmanned Spaceship "Shenzhou IV" Lands
Chinese Space Robot Reaches ?Maturity?
China to Land on the Moon by 2010
China Selects First Generation of Astronauts
Print This Page
|
Email This Page
About Us SiteMap Feedback
Copyright © China Internet Information Center. All Rights Reserved
E-mail: webmaster@china.org.cn Tel: 86-10-68326688
天天色色网| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 日韩专区一区| 久久精品免视看国产成人2021| 亚洲不卡一区二区三区在线| 国产精品免费久久| 成人免费网站视频ww| 成人免费福利片在线观看| 四虎影视库国产精品一区| 免费一级片网站| 久久国产影院| 国产原创视频在线| 国产91精品系列在线观看| 日本在线www| 国产激情视频在线观看| 日韩欧美一二三区| 尤物视频网站在线观看| 日韩免费在线观看视频| 久久国产影视免费精品| 色综合久久天天综线观看| 韩国妈妈的朋友在线播放| 99久久精品费精品国产一区二区| 欧美一区二区三区在线观看| 久久精品欧美一区二区| 免费国产在线观看| 国产不卡精品一区二区三区| 色综合久久天天综合绕观看| 亚洲爆爽| 国产一区精品| 一级女人毛片人一女人| 国产成人啪精品视频免费软件| 精品视频免费看| 日韩一级精品视频在线观看| 国产伦精品一区二区三区无广告| 久久99爰这里有精品国产| 九九精品在线播放| 日本免费乱理伦片在线观看2018| 99久久精品国产片| 国产成人啪精品视频免费软件| 一级片片| 亚洲精品影院| 精品美女| 黄色免费三级| 国产视频久久久久| 四虎影视精品永久免费网站| 欧美日本免费| 国产亚洲男人的天堂在线观看| 欧美一级视| 欧美日本国产| 国产精品自拍亚洲| 久久国产精品永久免费网站| 国产不卡精品一区二区三区| 成人在激情在线视频| 国产亚洲精品aaa大片| 国产成a人片在线观看视频| 99色吧| 国产不卡高清在线观看视频| 日韩免费片| 毛片的网站| 欧美国产日韩一区二区三区| 久久成人亚洲| 台湾毛片| 午夜家庭影院| 精品国产亚洲人成在线| 国产伦久视频免费观看视频| 国产激情一区二区三区| 国产成人精品在线| 黄色福利片| 九九精品久久久久久久久| 免费的黄视频| 国产一区二区精品| 四虎久久精品国产| 毛片的网站| 久久国产精品只做精品| 99色精品| 久久久久久久网| 久草免费在线色站| 欧美一区二区三区在线观看| 可以免费在线看黄的网站| 国产精品1024永久免费视频 | 日韩免费片| 成人a级高清视频在线观看| 四虎影视精品永久免费网站| 欧美a级v片不卡在线观看| 欧美大片一区| 久久99爰这里有精品国产| 国产伦精品一区三区视频 | 成人影院一区二区三区| 欧美日本国产| 可以免费看污视频的网站| 欧美一级视频免费| 色综合久久久久综合体桃花网| 午夜精品国产自在现线拍| 国产91素人搭讪系列天堂| 日本久久久久久久 97久久精品一区二区三区 狠狠色噜噜狠狠狠狠97 日日干综合 五月天婷婷在线观看高清 九色福利视频 | 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 亚洲第一视频在线播放| 成人免费观看的视频黄页| 天天做日日爱夜夜爽| 麻豆系列国产剧在线观看| 麻豆网站在线看| 欧美一级视频免费| 久久国产一久久高清| 国产91丝袜在线播放0| 免费一级片网站| 91麻豆精品国产综合久久久| 国产伦久视频免费观看 视频| 99热热久久| 精品视频免费观看| 好男人天堂网 久久精品国产这里是免费 国产精品成人一区二区 男人天堂网2021 男人的天堂在线观看 丁香六月综合激情 | 国产一区二区精品久久| 成人a大片在线观看| 精品国产亚一区二区三区| 免费一级生活片| 日韩在线观看视频网站| 欧美电影免费看大全| 日韩在线观看视频免费| 久久国产精品只做精品| 国产视频一区二区在线播放| 国产网站免费在线观看| 黄视频网站在线观看| 免费国产在线观看| 免费一级生活片| 欧美国产日韩在线| 日本久久久久久久 97久久精品一区二区三区 狠狠色噜噜狠狠狠狠97 日日干综合 五月天婷婷在线观看高清 九色福利视频 | 亚洲精品久久久中文字| 国产一区二区精品尤物| 国产视频在线免费观看| 日韩专区在线播放| 成人高清视频在线观看| 国产一区二区精品| 韩国三级香港三级日本三级| 国产a免费观看| 国产麻豆精品免费密入口| 精品视频在线观看一区二区三区| 尤物视频网站在线| 午夜在线亚洲| 午夜激情视频在线播放| 久久久久久久免费视频| 九九九在线视频| 亚洲 国产精品 日韩| 国产麻豆精品免费视频| 国产视频久久久| 亚洲精品久久久中文字| 日本乱中文字幕系列| 亚洲天堂免费观看| 精品视频在线看| 国产91丝袜在线播放0| 好男人天堂网 久久精品国产这里是免费 国产精品成人一区二区 男人天堂网2021 男人的天堂在线观看 丁香六月综合激情 | 高清一级毛片一本到免费观看| 毛片高清| 久久福利影视| 欧美一区二区三区性| 久久久久久久男人的天堂| 精品视频一区二区三区免费| 国产成人女人在线视频观看| 国产麻豆精品hdvideoss| 九九干| 日本免费看视频| 亚洲第一页乱| 91麻豆精品国产高清在线| 91麻豆精品国产综合久久久| 99久久网站| 国产视频在线免费观看| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 国产一区精品| 一级片片| 韩国三级视频在线观看| 日本特黄特黄aaaaa大片| 日日日夜夜操| 久久99这里只有精品国产| 麻豆系列国产剧在线观看| 欧美夜夜骑 青草视频在线观看完整版 久久精品99无色码中文字幕 欧美日韩一区二区在线观看视频 欧美中文字幕在线视频 www.99精品 香蕉视频久久 | 成人影院久久久久久影院| 国产美女在线观看| 亚洲爆爽| 久久国产精品自由自在| 天天做日日爱| 青草国产在线| 精品国产一区二区三区精东影业| 亚洲第一色在线| 天天色色色| 一级女人毛片人一女人| 99久久精品国产国产毛片| 亚洲女人国产香蕉久久精品 | 毛片的网站| 国产伦精品一区二区三区在线观看| 亚洲精品影院久久久久久| 国产一区二区精品尤物| 日韩在线观看视频网站| 九九精品久久| 色综合久久手机在线| 91麻豆精品国产高清在线| 可以免费在线看黄的网站| 国产福利免费观看| 韩国毛片免费| 91麻豆国产| 一级毛片视频播放| 国产91丝袜在线播放0| 欧美激情一区二区三区视频|