China News Service, Jiuquan, October 16 (Mar Shuaisha Guo Chaokai Sangqian) On October 16, the Long March 2 F Yao 13 carrier rocket (hereinafter referred to as the "Chang 2 F Yao 13 Rocket") ignited at the Jiuquan Satellite Launch Center Taking off, the Shenzhou 13 manned spacecraft carrying three astronauts will be sent into the scheduled orbit.

The Changer F rocket completed two manned launches a year for the first time. Only one month later, the "Tianhe" core module ushered in a new "space travel group of three."

"Shen Arrow" sends astronauts twice a year

　　The Chang-2F rocket, known as the "sacred arrow", was developed by the First Academy of China Aerospace Science and Technology Corporation. It is a rocket specially developed for China's manned space project and is currently the only type of manned carrier rocket in China.

On June 17 this year, the Chang-2 F Yao XII rocket successfully sent the Shenzhou XII spacecraft carrying three astronauts into the scheduled orbit, helping the Chinese nation realize the dream of "settling home" in space for thousands of years.

Four months later, the Chang'er F Yao 13 rocket set off again and sent the Shenzhou 13 astronaut crew to Tianhe.

　　It is understood that in the past 30 years, the Chang-2F rocket has participated in every step of the "three-step" strategy of China's manned space project, performing more than ten missions, but has completed two manned launches a year in China's manned spaceflight. This is the first time in the history of engineering, and this is just the beginning.

　　Chang Wuquan, Chief Designer of China Aerospace Science and Technology Corporation No. 1 Dean and No. 2 F rocket, said that the Chang No. 2 F rocket not only plans to carry out 4 launch missions in the next two years, but will continue to use a high frequency of 2 launches per year in the next few years. Carrying out launch missions and taking important responsibilities in the construction and operation of the Chinese space station in orbit, it can be said that "two launches will become the norm in the next year."

Yao fourteen "take over" emergency rescue duty rocket

　　Before the implementation of this mission, the Chang'er F Yao 13 rocket, as the first rocket in China's space history to integrate emergency rescue and launch missions, has just completed a 90-day emergency duty "standby".

In fact, starting from "standing in position", plus launch preparation time, this rocket "stands" for more than 5 months, the longest standing time of any Chinese rocket.

　　So, will standing for a long time affect the Rockets?

Chang Wuquan said that the development team has gone through a lot of analysis and tests, especially the special analysis of the load-bearing components, confirming that the rocket will not be affected if it is kept upright for a long time.

　　Starting from the Yao Twelve and Yao Thirteen rockets, the Chang Er F rocket adopts the launch mode of "1 launch, 1 backup" and "rolling backup". If the rocket is on duty, it will receive an emergency rescue order within 10 days at the earliest. Can implement emergency rescue launch.

As the Yao Shisan rocket switched to the normal launch process, the Yao Shi 14 rocket also "taken over" to become an emergency rescue mission rocket.

Therefore, while making preparations for the launch of the Yao-13 rocket, the development team must also prepare for the emergency rescue state of the Yao-14 rocket.

　　"In this mission, under the premise of ensuring reliability, we explored and implemented the parallelization and optimization of the two rocket launch site processes. It is expected that the launch preparation time can be shortened by about 20%. In addition, we are also conducting a new test and launch process. Technology reserves." Chang Wuquan said.

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