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

USEUROPEAFRICAASIA 中文雙語Fran?ais
China
Home / China / Innovation

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: 欧美高清成人 | 伊人久久国产 | 日本在线播放不卡一区二区三区 | 182tv成人网182tv香蕉 | 精品一区二区三区四区 | 中文字幕亚洲精品 | 亚洲视频免费在线看 | 色网在线播放 | 国产精品久久久久久52AVAV | 久久精品无码一区二区日韩av | 成人在线视频免费观看 | 国产日韩精品一区 | 添人人躁日日躁夜夜躁夜夜揉 | 欧美日韩免费播放一区二区 | 亚洲天堂一区二区三区四区 | 国产一区二区三区视频 | 国产精品久久久久久搜索 | 嫩草影院在线看 | 小明永久成人一区二区 | 無码一区中文字幕少妇熟女H | 亚州精品天堂中文字幕 | 色噜噜狠狠狠狠色综合久 | 国产99久久久国产精品 | 日韩在线欧美 | 亚洲狠狠婷婷综合久久久久图片 | 精品国产一区二区三区久久久蜜月 | 韩国美女激情视频一区二区 | 韩国精品免费视频 | 天天干天天操天天爽 | 99国产在线精品视频 | 中国明星一级毛片免费 | 一区二区三区日 | 天天色综合天天 | 亚洲色婷婷久久精品AV蜜桃久久 | 日韩三极| www久久久| 夜干夜干2017最新网站 | 日韩免费视频 | 三级毛片在线 | 日本VA在线视频播放 | 午夜丰满少妇高清毛片1000部 |