China News Service, Beijing, August 6th, title: Two stars with one stone and another good news, the leader of Erding Rockets creates a 30-year 50-round victory record
Author Guo Chaokai Zheng Yingying Li Ying
Photo by Wang Jiangbo
On August 6, the Long March 2D carrier rocket (hereinafter referred to as the Changer Ding rocket) developed by the Shanghai Aerospace Technology Research Institute under the China Aerospace Science and Technology Corporation was ignited at the Jiuquan Satellite Launch Center and successfully launched the Gaofen 9 04 The satellite and Tsinghua Science Satellite were accurately sent into the predetermined orbit.
So far, the Chang Erding Rocket has created an outstanding record of 50 rounds in 30 years, sending more than 100 satellites into space. Over the past 30 years, the Chang Erding Rocket has been awarded the "High Quality Rocket" and "Gold Medal Rocket" for its outstanding performance and record.
First flight in World War I achievement "Dragon Rising"
In 1990, in order to meet the requirements for launching missions of retractable satellites and sun-synchronous satellites, the Commission for Science and Technology for National Defense issued the "Approval of the Long March 2D Carrier Rocket Development Mission Statement", marking the official start of the development of the Changer Ding rocket.
On August 9, 1992, the Chang'erding rocket was fired at the Jiuquan Satellite Launch Center for the first time and successfully launched a retractable satellite, becoming a member of the Chinese Long March series of launch vehicles. Prior to this, the domestic mission to launch aliens failed, which put the Chinese aerospace industry under tremendous pressure. As the first successful launch vehicle, the Changer Ding rocket is considered to be a "dragon rising head", which injected new strength into the unfavorable situation of China's aerospace at that time.
Under the severe situation at that time, in 1994 and 1996, the Changer Ding rocket withstood the pressure twice and achieved the complete success of the second and third launch missions, which reversed the passive situation of successive failures in space missions. The company awarded the title of "Quality Carrier Rocket".
After its debut in World War I, for 28 years, the Changerding Rocket has improved the inherent reliability of the rocket through a full range of technological innovations, so that the reliability index of the whole rocket has reached 0.97 or more, which is still the best in the world's carrier rocket family.
Win a good reputation in the international market
The Changerding rocket has won an extraordinary reputation in the international launch market with its outstanding performance in international commercial launches. Tan Xuejun, commander-in-chief of Changerding Rocket, recalled that the launch of the Turkish GK-2 satellite in 2012 was the first time that Changerding Rocket had undertaken an alien launch mission. As early as 2011 when bidding for the satellite launch service, Russia’s “Dnepr” rocket and Japan’s H2 rocket did their best. In the face of strong competitors, the Changer Ding rocket team passed nearly 200 emails and 10 Several video conferences, 4 trips to Turkey, and 3 low-impact improvement tests, won the bidding with the advantages of high reliability and high security.
In the end, the Changer Ding rocket set a new record for the accuracy of China's launch vehicle into orbit: the deviation of the actual inclination angle is only 0.003 degrees, which is more than 30 times higher than the general design requirement and an order of magnitude higher than the contract requirement. It has established a good international reputation and reputation for Changerding Rocket.
Through this international launch service, the Changer Ding rocket team formed a standardized international launch service program, which opened the way for subsequent international launch services of this model and brother models, and formed the group's common international launch standards and specifications. Since then, this type of rocket has provided high-quality launch services to many international customers such as Saudi Arabia, Venezuela, the Netherlands, Argentina, and Ecuador.
On December 7, 2018, the Chang Erding rocket successfully sent the SaudiSat-5A/B remote sensing satellite of the King of Science and Technology City of Saudi Arabia into the scheduled orbit, which is of great significance to further strengthen the cooperation between China and Saudi Arabia in the space field.
Brand-new configuration seizes the multi-satellite launch market
At present, the Chang Erding rocket occupies an important position in the low-to-medium orbit launch mission. Through continuous evolution and development, it continues to explore new configurations.
At present, the multi-satellite loading, parallel, series, series-parallel, and multi-satellite off-orbit deployment methods of the Changer Ding Rocket have all passed the mission assessment. Through diversified configurations, the Changer Ding Rocket has mastered a set of effective multi-satellite launch safety strategies, with 2900mm, 3350mm, 3800mm, 4000mm and other satellite fairings of different diameters and serialized and standardized star and arrow interfaces , Multi-satellite launch has become the norm.
By making full use of the carrying capacity, the Changer Ding rocket can meet the diverse needs of users to the greatest extent, which greatly meets the launch needs and development trends of commercial satellites. Take 2020 as an example. Among the 6 missions currently launched by the Changer Ding rocket, multi-satellite launch technology has been applied in 5 of them, and a total of 17 satellites have been launched.
Set a new record for launch in 13 working days
According to Li Jianqiang, deputy chief designer of Chang Er Ding Rocket, five battles and five victories in 60 days, four different launches in 40 days, two consecutive launches in 30 days, Chang Er Ding rocket proved to the world that China has rich experience in high density launch.
At present, the Changer Ding rocket has become the model with the shortest launch period of the liquid carrier rocket in active service in China. The long-distance test and launch mode has been adopted for the Changer Ding rocket for the first time since 2003, which cancelled the power system test and electrical system test of the rocket technology zone level state, improved the test efficiency, and gradually shortened the working time of the launch site from the first two months. For today's 13 working days.
In 30 years of glorious years, the Changerding Rocket has paved the way for self-reliance and overcoming difficulties in the field of carrier rockets of Shanghai Academy of Aerospace Technology. In the future, the Changerding Rocket will also use technology upgrades as its sails and management innovation as its oars to ride the wind and waves in the vast sea of stars. (Finish)