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On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. At 1:51 on March 12, my country successfully completed the launch of the long March 7 carrier rocket to Yao 2 at the Wenchang space launch site. The Test No. 9 satellite launched this time is mainly used for in-orbit verification tests of new technologies such as space environmental monitoring, Photo by Xinhua News Agency reporter Guo Cheng.
Xinhua News Agency, Wenchang, Hainan, March 12Title: To fill the gap in the capacity of high-orbit aircraft carriers, the new member of the Long March carrier rocket family “Changqichang” officially entered
Xinhua News Agency reporters Hu Zhe and Chen Kaizi
In the early morning of the 12th, the modified Yao 2 carrier rocket from March 7 long ignited and took off at the Wenchang space launch site in China, successfully sending the test satellite 9 into its intended orbit. The Long March VII carrier rocket is also known as the “modified Changqi” rocket. It has returned after more than 300 days. This new member of the Long March family of carrier rockets has finally officially entered the list, which will fill the high orbit carrying capacity of my country’s carrier rockets orbit.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Yang Guanyu.
The “Chang Qichang” is not only beautiful in appearance, but also tall and tall
The “Changqichang” rocket has a total length of 60.1 meters. It is improved and developed on the basis of the Long March 7 rocket. It is 7 meters longer than the Long March 7, which also makes its appearance appear slender and tall.
“In everyday life, thin and long things are easier to break, and this is also true for rockets,” said Shen Dan, the general designer of the “Changqichang” rocket at the First Aerospace Science and Technology Corporation. Academy of China. To solve this problem, the development team “Moving flowers to wood”, using the old craft storage boxes of the co-trained arrow of the long March 7 and the 3A rocket of the large The stability and precision of the control They meet the mission requirements. ?????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ????????????????????????????????????????????? ????????????
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Zhou Jiayi.
When the thin rocket penetrates the atmosphere, it may run the risk of “breaking”. The rocket development team adjusted the rocket’s flight attitude based on high-altitude wind data measured several hours before launch, allowing it to “go” on the best route, reducing the risk of the rocket after takeoff.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Yang Guanyu.
“Chang Seven Reform” has more “good skills” than March 7 long
The Long March VII rocket can meet the launch requirements of cargo spacecraft in low Earth orbit, but if the satellite is to be sent into a geosynchronous transfer orbit with a perigee of 200 kilometers and an apogee of 36,000 kilometers, its carrying capacity will be less. of 4 tons. During the development of the “Seven Chang Modifications”, the three hydrogen and oxygen sub-modules of the Long March III A series rockets were added, so that it is based on a geosynchronous transfer orbit transport capacity of 7 tons. , as well as a zero inclination orbit, a lunar orbit, etc. High-orbit launch capability.
In rocket development, adding modules is not as simple as “building blocks.” Wei Yuanming, the chief designer of the “Chang 7 Reform” rocket at the First Academy of China Aerospace Science and Technology Corporation, introduced that the “Chang 7 Reform” rocket has a number of key technological innovations on the basis of fully inheriting the maturity modules of the Long March 7 and Long March 3A series rockets.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Yang Guanyu.
According to statistics, the failure of the power system explains almost half of the reasons for the failure of the flight of rockets in the world. The “Changqiqichang” adopts guidance and control technology that adapts to typical failure modes. The rocket will plan an optimal route to fly by itself based on information such as position and speed, making it smarter.
In addition, through technological innovation, the “Changqichang” rocket can reduce a set of separation mechanisms, greatly reduce the complexity of the separation system, and improve the reliability and economy of the rocket.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Yang Guanyu.
The follow-up to the “Seventh Changzhou Reform” will carry out many important national tasks.
Ma Zhonghui, deputy chief designer of the “Changqiqichang” rocket of the China First Academy Aerospace Science and Technology Corporation, introduced that the green and environmentally friendly “Changqiqichang” rocket with liquid oxygen and kerosene propellant is one of the main rockets. of the new generation of carrier rockets, and its launch is a sign of success My country’s medium-sized aerospace carrier rocket is being modernized and improved.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Pu Xiaoxu.
The “Chang Seven Modification” rocket is reported to be able to meet the high-density launch requirements of high-orbit medium and large satellites. In the future, it will be in 36,000 kilometers of geosynchronous orbit with the Long March III A series rocket with a payload capacity of 5.5 tons and an aircraft carrier of 14. Together with the capable Long March 5 rockets, a more optimized and reasonable capacity design, and China’s aerospace capabilities have been greatly improved. The “Changzhou Seven Reform” rocket follow-up will gradually become a basic type of my country’s high-orbit medium rocket and carry out a number of important national tasks.
Meng Gang, commander-in-chief of the “Changqichang” rocket of the China First Academy Aerospace Science and Technology Corporation, said that according to the current mission schedule, the “Changqichang” rocket will carry out 3 to 5 launch missions. by year 2025, and will be updated according to mission requirements in the future. The launch of zero-degree orbital tilt satellites and the launch of deep space exploration missions such as lunar exploration, fire detection, and asteroid detection.
On March 12, the Long March 7 to Yao-2 carrier rocket was successfully launched at the Wenchang space launch site in Hainan. Photo by Xinhua News Agency reporter Guo Cheng.
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【Editor in charge: Yin Shijie】
