Today is space with you [No. 1456]
In the middle of spring, the Beijing Space City is full of life, and the spring breeze blows green leaves, which also brings good news that the Shenzhou 13 manned spacecraft is about to return to Earth.
At about 8:30 a.m. on April 16, in the mission hall of the Beijing Spatial Information Transmission Center, scientific and technological personnel were paying close attention to the task status of each subsystem, repeatedly checking the operation, and providing space-based measurement and control and data relay services for the return of the spacecraft.
The screen in the hall showed that the 3 astronauts in the spacecraft were waiting in a tight line, they sometimes adjusted their posture, sometimes confirmed the technical status with the ground, and everything worked smoothly and orderly.
During the 6 months in orbit, the Shenzhou 13 manned spacecraft has always maintained a clear and stable communication link with the ground throughout the day, behind which is the 24-hour uninterrupted companionship and protection of the "Tianlian" relay satellite system and the "Tianluren".
"The one who travels a hundred miles is half ninety, the flight mission has reached the final stage, we must not relax, we must successfully complete this mission!" Command and dispatch Ma Chao cheers on all post personnel through the internal scheduling system. Even after 6 consecutive months of high-intensity work, the majority of scientific and technological personnel in the center still have no fatigue on their faces.
In the overall post, engineer Zheng Yonghui looked serious and kept an eye on the transmission status of the link. The overall post is the leading position of each system of the center, which is not only responsible for formulating various technical implementation plans, but also organizing various systems to carry out joint test and joint commissioning, which is the position most familiar with the task state within the center.
As the person in charge of the shenzhou 13 model, Zheng Yonghui witnessed the hard work of the vast number of scientific and technological personnel in the center for half a year, and he could not help but sigh: "From the launch into orbit, the outgoing cabin activities, the call between heaven and earth to the space teaching, in the past 6 months, we have continuously witnessed the Shenzhou 13 crew refreshing China's height in space, and while successfully completing the task, we also deeply feel the glory and pride of devoting ourselves to the aerospace industry of the motherland." ”
"Engine ignition! Back to braking to start! At about 9:08, with a dazzling light flashing on the big screen, the speed of the spacecraft gradually slowed down, which meant that the return capsule carrying the three astronauts was about to sail back to the earth home.
The six months of "space business trip" have set a new record for the length of time Chinese astronauts spend in orbit, and have also brought new challenges to the relay satellite system.
"In the face of the fact that space-based measurement and control and data relay tasks are becoming more and more intensive and the support time is getting longer and longer, we have also been exploring ways to improve our capabilities." The leader of the center told reporters that in recent months, they have continued to carry out the "weekly one question" activity, and use half a day a week to convene expert backbones to conduct research and discussion on difficult issues such as "how to improve the efficiency of satellite resource use".
It is understood that at present, the "one question per week" activity has formed a number of achievements, which are being verified in the simulation exercise organized by the center, and will be officially put into practical application in the follow-up. "With the continuous development of China's space industry, the relay satellite system has not slowed down the pace of progress." The head of the center said so.
At about 9:56, the return capsule landed safely at the Dongfeng landing field, and everyone applauded excitedly, but then set their eyes on the data transmission link map of the Tianchain II 01 satellite.
During the search and rescue of the landing site, Tianlian-2 01 satellite once again exerted its dual antenna advantages to establish a forward return link with the landing field communication helicopter to achieve cross-field communication between the landing site and Beijing. During the helicopter flight, the satellite adjusts the antenna angle according to the helicopter position to ensure that the screen transmission is stable and reliable in real time, which greatly improves the efficiency of search and rescue recovery.
"01 Feel good!" "02 Feel good!" "03 Feel good!" Hearing the familiar "feel good", the hall resounded with warm applause again, "6 months, more than 180 days, more than 4,000 hours... All the hard work has turned into a sense of happiness and honor in my heart at this moment. In the crowd, Shan Changsheng, chief engineer of the center, could not hide his excitement, "From Shenzhou 7 to Shenzhou 13, we and the 'Tianchain' relay satellite have witnessed the development of the mainland's manned spaceflight industry, and in the future, we will continue to work hard and unswervingly to strive for greater glory for the motherland!" ”