在线国产一区二区_成人黄色片在线观看_国产成人免费_日韩精品免费在线视频_亚洲精品美女久久_欧美一级免费在线观看

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

Long March 3B rocket achieves new milestone

By ZHAO LEI in Xichang, Sichuan | CHINA DAILY | Updated: 2025-05-30 07:39
Share
Share - WeChat
China's Tianwen 2 probe, atop a Long March 3B carrier rocket, lifts off from the Xichang Satellite Launch Center in Southwest China's Sichuan province, May 29, 2025. [Photo/Xinhua]

The successful launch of the Tianwen 2 robotic probe on Thursday morning marked the latest achievement of the Long March 3B rocket model.

The rocket, developed by the China Academy of Launch Vehicle Technology in Beijing, is primarily used to launch satellites into geostationary transfer orbits, and it can transport 5.55 metric tons of payloads to such orbits. It can also send spacecraft to other types of orbits, such as the medium-Earth and lunar transfer orbits.

The Long March 3B is 56.3 meters tall and has a diameter of 3.35 meters, and it runs on liquid propellants. The rocket has three stages and four side boosters, each 2.25 meters wide, and weighs 456 metric tons when filled with fuel.

It is the most used rocket model in China, having made 109 flights as of Thursday. It has completed several national programs, including ferrying most of the Beidou navigation and positioning satellites to their orbits and placing the Chang'e 3 and Chang'e 4 lunar probes on their moon-bound trajectories.

The Tianwen 2 mission marks the Long March 3B's maiden flight aimed at thrusting a spacecraft out of Earth's orbit, which means that when the rocket separated from the probe, it surpassed the escape velocity of 11.2 kilometers per second required to get away from Earth's gravitational pull. This achievement once again testifies to the model's structural strength and reliability, according to its designers.

The ultrafast speed, together with the fact that the asteroid is very far and small, required an extremely high level of aiming accuracy. A minor deviation could have led to overshooting by millions of kilometers, said Zhang Yipu, a senior designer of the rocket.

"Metaphorically speaking, it was like pitching a basketball from Shanghai and guaranteeing that it would hit a designated rim in Beijing at a predetermined speed and angle," Zhang said, adding that they used new technologies to improve the rocket's guidance and speed adjustment systems to ensure this demanding launch mission was successful.

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: 特级黄色毛片 | 看羞羞视频免费 | 国色天香成人网 | 成人av网站在线观看 | 国内精品一区二区 | 精品久久在线 | 人人鲁人人莫一区二区三区 | 亚洲一区久久久 | 国产精品欧美三级在线观看 | 久久国产精品毛片 | 97超碰免费在线 | 一区二区欧美在线 | 亚洲综合在线视频 | 久久草视频 | 亚洲国产成人久久一区二区三区 | 欧美精品久久一区 | 国产中文在线 | www久久精品 | 天天操天天干天天爽 | 日韩视频在线免费观看 | 国产精品理论片在线观看 | 国产九九九 | 成人免费视频在线观看 | 欧美激情一区二区三级高清视频 | 亚洲第一区国产精品 | 逼逼av| 三级av网站 | 色综合久久久久 | 亚洲日韩欧美一区二区在线 | 国产浪潮av色综合久久超碰 | 欧美精品一区二区在线观看 | 国产在线拍 | 日韩精品一区二区三区免费视频 | 91爱爱视频 | 日韩免费久久 | 欧美日韩一区电影 | 日日插日日操 | 黄色影视在线免费观看 | 日韩免费网站 | 一区在线视频 | 天天做天天看 |