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

Global EditionASIA 中文雙語Fran?ais
China
Home / China / Innovation

New rocket marks debut mission of launch center

By ZHAO LEI | chinadaily.com.cn | Updated: 2024-12-01 22:01
Share
Share - WeChat

China's carrier rocket fleet has expanded further, as the newest type in the Long March family, the Long March 12, made its debut flight on Saturday night in Wenchang, Hainan province.

The flight also marked the first mission of the Hainan International Commercial Aerospace Launch Center, the nation's first spaceport dedicated to facilitating commercial operations.

As a large crowd of spectators gathered at the coastal launch complex, four liquid oxygen-kerosene engines on the rocket's first stage roared with dazzling flames at 10:25 pm, and the gigantic rocket rose into the night sky from the No 2 launch pad at the new space complex.

After a short while, two experimental satellites separated from the rocket and entered their preset orbit, marking the success of the launch mission.

Designed by the Shanghai Aerospace System Engineering Institute, the Long March 12 is the 22nd member of the Long March family, the backbone of China's space sector, and the 17th in the operating fleet.

The institute is part of the Shanghai Academy of Spaceflight Technology, which belongs to the State-owned industry conglomerate China Aerospace Science and Technology Corp.

The Long March 12 is the first Chinese rocket with a diameter of 3.8 meters. Most Chinese rockets have a diameter of 3.35 meters, a standard width set in the 1960s due to rail transportation factors.

At 62.6 meters tall, the two-stage model is the second-tallest among all Chinese rockets, exceeded only by the 62.8-meter Long March 5.

The vehicle is propelled by engines fueled by liquid oxygen and kerosene and has a liftoff weight of more than 430 metric tons. It is capable of transporting spacecraft with a combined weight of more than 12 tons to a low-Earth orbit, or 6 tons of satellites to a typical sun-synchronous orbit at an altitude of 700 kilometers, according to the Shanghai academy.

The new model will effectively improve China's capability to send spacecraft to a sun-synchronous orbit and deploy satellite networks in low orbits, it noted, adding that research and development started in May 2020 and finished in June this year.

Xie Li, a senior designer of the new model, said the rocket features new technologies and equipment.

"It is the first Chinese rocket equipped with an automatic ignition-malfunction detection system. ... After the engines are ignited, the system will detect whether the engines are functioning well, and if the result is good, the system will unleash the hold-down clamps, allowing the engines to reach full power to lift off.

"When the rocket begins to fly, the system will continue performing real-time checks on the vehicle's condition, and if any anomaly occurs, the system will take necessary measures such as to replan the trajectory to make sure the satellites can be deployed into their preset orbit," he said.

Another advantage is that the new type needs a short time for prelaunch preparations at the service tower, which means that the launch facility can serve more space missions in a given time, thus enhancing the spaceport's operational efficiency, according to the designer.

In addition, the fuel tank of the Long March 12's second stage is made of a cutting-edge aluminum alloy that boasts lighter weight and better strength.

"Compared with other types of aluminum alloy used on older Long March-series rockets, the new material is up to 15 percent lighter in structural weight and 28 percent higher in tensile strength," Xie said.

Regarding the 3.8-meter diameter, he said that a wider body enables the rocket to have four engines on its first stage, while the 3.35-meter-wide models have two. Moreover, being wider means the rocket can contain more propellants. All of these give the new model a greater carrying capacity, he added.

The Long March 12 mission marked China's 59th space launch this year and the 548th flight of the Long March family.

Top
BACK TO THE TOP
English
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: 亚洲精品91香蕉综合区 | 好妞操 | 在线观看成年人免费视频 | 欧美在线亚洲 | 综合色久七七综合七七蜜芽 | 国产最新精品 | 日韩一区二区在线播放 | 国产乱码一区二区三区四川人 | 第一区免费在线观看 | 黄色福利网 | 免费一级毛片在线播放 | 国产日本三级 | 台湾三级香港三级经典三在线 | 性色欧美xo影院 | 免费成年人在线观看视频 | 99国产精品欧美久久久久久影院 | 久久国产免费一区二区三区 | 欧美野外性xxxxfeexxxxx | 性盈盈影院67194 | 久久久国产99久久国产久 | 天天躁夜夜躁狠狠躁2024 | 国产日产欧产精品精品推荐在线 | 久久久久综合国产 | 巨大热杵在腿间进进出出视频 | 亚洲男人天堂手机版 | 中文字幕av一区二区三区 | 一级片网站在线观看 | 国产99视频免费精品是看6 | 秀人网私拍福利视频在线 | 久久不见久久见免费影院 | 日本人一级毛片免费视频 | 欧美深夜在线 | 国产欧美日韩视频在线观看一区二区 | 国外精品视频在线观看免费 | 武松金莲肉体交战在线观看 | 亚洲黄色软件 | 男人天堂视频在线观看 | 欧美极品欧美精品欧美视频 | 欧美一区二区精品系列在线观看 | 国产成人精品综合 | 91久久精品一区二区三区 |