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

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Top News

Giant new rocket roars into space

By ZHAO LEI | China Daily | Updated: 2016-11-04 07:32

Giant new rocket roars into space

The first Long March 5, a titanic heavy-lift carrier, pierced the heavens Thursday night

China launched its first heavy-lift Long March 5 carrier rocket late Thursday, marking a new milestone in the country's space industry.

As China's first-generation heavy-lift rocket, the Long March 5 has a liftoff weight of 870 metric tons, and a maximum payload capacity of 25 tons to low Earth orbit and 14 tons to geosynchronous transfer orbit.

The 57-meter-tall rocket, the tallest in China's carrier rocket family, thundered away with a blinding white flash from the Wenchang Space Launch Center in the island province of Hainan at 8:43 pm. It ferried the Shijian 17 scientific experiment satellite and a Yuanzheng 2 upper stage, which is capable of putting multiple payloads into different orbits during a single mission.

As the nation's strongest and most technologically advanced launch vehicle, Long March 5 will enable China to put its future manned station into space and send unmanned probes to Mars, according to the State Administration of Science, Technology and Industry for National Defense, which oversees the rocket's development.

China will start launching parts of its permanent manned space station starting in 2018 and put the station into service around 2022. The nation also will send an unmanned probe to Mars to orbit and land around 2020, said space officials.

The Long March 5 rocket has two core stages and four boosters. It uses liquid oxygen/kerosene and liquid oxygen/liquid hydrogen as propellants, making the rocket friendlier to the environment than previous Long March types, according to the China Academy of Launch Vehicle Technology in Beijing.

It has taken researchers 10 years to develop the Long March 5 after nearly 7,000 tests, the academy said.

"The Long March 5's payload capacity is about 2.5 times bigger than other major Chinese rockets. ... The bigger size is not just a simple enlargement, actually it represents tremendous breakthroughs in terms of design, testing and manufacturing capabilities," said Li Dong, chief designer of Long March 5 at the academy.

Li Bin, vice-president of the Academy of Aerospace Propulsion Technology in Xi'an, Shaanxi province, said researchers at his academy overcame numerous difficulties before working out the 120-ton-thrust liquid oxygen/kerosene engine, the main propulsion of Long March 5.

Long March 5 is the fourth new carrier rocket that China has launched over the past year. Long March 6 and 11 performed their maiden flights in September 2015 while Long March 7 carried out its first launch in June.

No other country has put so many new rockets into service in one year, experts said.

Fu Zhiheng, vice-president of China Great Wall Industry Corp, the nation's only authorized firm for international space collaboration, expects that Long March 5 will provide many opportunities in the commercial launch market because there are a great number of commercial satellites in the market that need powerful rockets to lift them.

Beyond Long March 5, the China Academy of Launch Vehicle Technology has begun to develop a super-heavy rocket that will have a takeoff weight of 3,000 tons and can lift a 100-ton payload into low Earth orbit.

If the research and development proceed well, the super-heavy rocket will carry out its first flight around 2030, and then it will enable China to land astronauts on the moon and to send and retrieve Mars probes, researchers at the academy said.

Previous Page 1 2 3 Next Page

Editor's picks
Copyright 1995 - . All rights reserved. The content (including but not limited to text, photo, multimedia information, etc) published in this site belongs to China Daily Information Co (CDIC). Without written authorization from CDIC, such content shall not be republished or used in any form. Note: Browsers with 1024*768 or higher resolution are suggested for this site.
License for publishing multimedia online 0108263

Registration Number: 130349
FOLLOW US
主站蜘蛛池模板: 最新欧美精品一区二区三区不卡 | 欧美精品久久久久久久免费观看 | 欧美一级级毛片 | 国产激爽大片在线播放 | 91成人国产网站在线观看 | 国模偷拍在线观看免费视频 | 免费看一级欧美毛片 | 国产一区二区在线观看视频 | 亚洲色欧美 | 女人张开腿让男人桶视频 | 国产妇乱子伦视频免费 | 亚洲国产一区二区三区综合片 | 欧美日韩精品一区二区三区视频在线 | 美女黄视频免费观看 | 久久精品国产精品亚洲艾 | 国内免费自拍视频 | 免费一级真人毛片 | 久久网站在线观看 | 自怕偷自怕亚洲精品 | 久久精品国产免费一区 | 久久99视频免费 | 女人张开腿让男人插 | 91探花福利精品国产自产在线 | 久久精品人人爽人人爽快 | 久久精品国产99久久6动漫欧 | 久久久久欧美情爱精品 | 国产美女做爰免费视 | 国产精品欧美视频另类专区 | 免费国产黄| 99久久99这里只有免费费精品 | 日韩黄色视屏 | 69日本xxxxxxxxx13| 久久久在线视频精品免费观看 | 国产免费一级视频 | 成年人在线免费网站 | 99久久精品久久久久久婷婷 | 国产黄色一级毛片 | 日韩一级黄色毛片 | 亚洲国产精品久久 | 国产乱子伦片免费观看中字 | 免费看一级欧美激情毛片 |