On the morning of April 16, a red and white umbrella flower bloomed over northwest China. The Shenzhou 13 manned spacecraft returned to the ground under the protection of a large umbrella, and three astronauts, Zhai Zhigang, Wang Yaping and Ye Guangfu, returned home safely.
Shenzhou 13 adopted a quick return plan, and the time to return home was not long. During this period, except for the physical condition of the three astronauts, which attracted much attention, it was the huge umbrella of life that was unfolded at the last moment.
This is the "main umbrella" carried by Shenzhou 13. It is about 1,200 square meters. When fully unfolded, it can cover 3 basketball courts. The straightened length exceeds 70 meters and can span the football field. It is to protect the safety of astronauts returning to Earth. Assure.
Its main purpose is to reduce the speed of the return capsule, ensure the stable landing attitude of the return capsule, and make the astronauts land safely and smoothly.
After learning that the Shenzhou 13 manned spacecraft returned safely, a group of post-80s and post-90s "astronaut embroidered girls" in Beijing Aerospace City - they are part of the research and development team of the Shenzhou spacecraft recovery and landing subsystem of the 508th Institute of China Aerospace Science and Technology Corporation. The "main player" - shed tears of excitement.
The big umbrella that protects the astronauts home safely is from their hands.
Over the years, they have devoted themselves to guarding the astronauts' safe return home with their innocence and reverence for life.
"The astronauts put life in our hands, and we have to be responsible for life!"
"Successful landing!" Bao Jin Jin, deputy chief designer of the Shenzhou 13 manned spacecraft recovery and landing subsystem of the Fifth Academy of China Aerospace Science and Technology Corporation, stared at the live broadcast screen and said excitedly: "The big umbrella is powerful, this heart is finally put down. It's gone!"
Whenever the product test of the recovery and landing subsystem enters a critical stage before launch, as the chief designer of the Shenzhou spacecraft's recovery and landing subsystem, she not only has to rush to the test site every day to confirm a large amount of test data, but also use the test interval and rest time to catch up. Write various report materials, and strive to sort out the status and key data of all products clearly and review them in place.
Data is the main basis for judging product status.
Packets that deal with data all day come in, and no data error is allowed.
Bao Jinjin in life is always smiling, gentle and kind, but she really "bargained" with her at work, and she immediately appeared to be arguing.
"As the astronauts put life in our hands, we have to be responsible for life!" she said, "The more mature the model, the more cautious you need to be. When someone else divides the system as a whole, everything goes well, and it can't be broken on me. "
Manned spaceflight, human life is at stake.
The parachute product is the key product of the Shenzhou spacecraft recovery and landing subsystem. The production process is complex and there are many key control links. The processing, packaging and assembly are all manual operations. Therefore, the quality requirements of each spacecraft parachute product can be said to be extremely strict and unacceptable. lose.
"Sister Xia, help me to see if the sewing pattern of this top hole reinforcement belt meets the requirements?" "Sister Xia, how do you understand the design and process description of this part?"...As long as "Sister Xia" is on the scene, the team members are like eating On the "reassurance pill".
"Sister Xia" is Yang Xia, the leader of the parachute research and development center of the 508th Institute of China Aerospace Science and Technology Corporation. She is mainly responsible for the preparation of the Shenzhou 13 parachute process, as well as the design of the processing process, the refinement of the process content, and the formulation of product assurance control in the production stage. Measures to solve the technical problems in the parachute processing process.
Working for 12 years, she has been at the forefront of parachute development, concentrating on the parachute manufacturing process, and is a veritable "big sister".
But she is obsessed with parachute craft innovation like a child.
Speaking of the Shenzhou 13 manned spacecraft, she recalled that she welcomed the return of the astronauts with trepidation and excitement in the past few months, she said: "In the product review process, we reviewed every product from the whole process of parachute production. The consistent state of parts processing ensures that the product quality is foolproof, and we are confident."
Yang Xia knows that craftsmanship is a "bridge" between design and manufacturing, and only when the "foundation" is stable can the "bridge" function fully.
Do a "medical examination" for the umbrella like taking care of your own child
In 2003, the Shenzhou-5 manned spacecraft returned safely, and Sun Jialin, who was a little girl at the time, had the idea of becoming an astronaut.
A few years later, the post-90s became a parachute designer at the 508 Institute of the Fifth Academy of China Aerospace Science and Technology Corporation, responsible for the design of the Shenzhou 13 parachute.
On the computer, a photo of the Shenzhou 13 manned spacecraft's parachute packaging process record and an electronic atlas for the quality control of the parachute packaging process as a reference came into Sun Jialin's eyes at the same time.
The parachute packaging process is a typical undetectable and unmeasurable link. In order to facilitate the status comparison, Sun Jialin marked the packaging requirements, and prepared the packaging status photos that have passed the flight verification before and the packaging status of other parachutes in the same batch.
She often said, "The responsibility for quality is more important than Mount Tai, and no detail can be overlooked".
In the umbrella drying hall of No. 508 Institute of the Fifth Academy of China Aerospace Science and Technology Corporation, a red and white umbrella hangs high in the middle. This is the "meritorious umbrella" returned from a batch of sampling test flights. The designer in charge wearing a white coat Sui Rong is doing a "physical examination" for the parachute with the inspection and processing staff.
"Every flight-tested parachute is a valuable asset. They verify the performance of the parachute and provide strong support for the continuous improvement of product reliability." Sui Rong said.
In Sui Rong's view, being a designer is not just sitting in the office writing reports and drawing drawings, but also understanding craftsmanship and processing.
During the processing of parachute products, whenever she has time, she runs to the processing center to confirm the product status and communicate processing problems with the processing staff.
During the acceptance inspection, she and the inspectors analyzed the product performance together, no matter the details... In her eyes, success is not accidental, and the success of the recovery landing is because every detail has no mistakes.
"When I was in high school, I saw Yang Liwei who took the Shenzhou 5 on TV and became the first space hero in my country to fly into space. I was very excited. At that time, I planted the seeds of space service in my heart." Every time I recall The original intention of becoming an astronaut was always filled with emotion.
It is precisely this yearning and dedication to the aerospace industry that a large umbrella carrying an escort mission passed her strict inspection, paving the way for the astronauts to go home safely.
"Sew every stitch carefully, because success can only be successful"
"When the spaceship returned, I was very nervous. I kept praying that everything would go well, and then I wondered if it's time to bomb the cover, take off the parachute, turn and hang, and wait for all the actions to be completed. I really relax." As the person in charge of the airdrop test and final assembly of the Shenzhou 13 spacecraft recovery and landing subsystem, Zhang Yajing couldn't help shedding tears while watching the live broadcast.
Zhang Yajing told reporters that the dream of spaceflight in her heart is to be able to reach any place she wants to go, to travel to and from her home freely, and to return safely no matter where she goes.
In the spacious test final assembly plant, Zhang Yajing held the remote control in hand, controlled the crane, and carefully lifted the several-ton airdrop test model to the predetermined position, accompanied by bursts of roars.
The male colleagues standing by the side said with surprise: "You can still drive a crane, and you are so proficient at driving!" Zhang Yajing responded humorously: "This is just a basic skill of the test personnel."
This is just the "tip of the iceberg" of her abilities.
Driving a battery car with buckets, loading products and screwing screws... Although she is the only woman in the group, this female man is used to doing everything by herself.
Zhang Yajing's most common saying is: because of success, only success can be achieved.
Therefore, when she saw that the assembly boy had taken it for granted, she immediately pointed it out, and explained to him the serious consequences that may be caused by impreciseness: the success of the experiment depends on the joint efforts of everyone, not one person.
The processing of the parachute is a key step in the development process of the Shenzhou spacecraft.
This step was completed by a group of young and wise "women's groups", including such a warm-hearted female craftsman - Fu Chunhui, who has undertaken many technical jobs with difficult sewing skills, and is now the technical backbone of parachute processing. "Sew every stitch with heart" is her request to herself.
"When I was still in school when I was in aerospace, everyone was talking about Shenzhou 7, and I was very excited, but I didn't think I would take up this job at the time, and I felt very far away from me." In an interview with reporters, he was responsible for the production of the main umbrella. Fu Chunhui said, "I'm a little excited now that the astronaut came back safely with the umbrella I made."
There is no success without effort.
"Be diligent and ask questions, and have first-class technology" is synonymous with Fu Chunhui.
"Only by studying hard and asking more questions can we get rid of the passive working state where the master says one step and the apprentice does one step." In her spare time, she often reads books on parachute processing.
Every time a new task is assigned to her, she always carefully consults the design drawings and process documents before sewing, and makes a note of what she does not understand and quickly consults the experts.
How to ensure the same size of the main umbrella of 1200 square meters in a limited space is the most difficult problem for the team.
Fu Chunhui kept flipping through the materials and notes, carefully pondering the fabric of the parachute edge, while operating on the sewing machine, and finally ensured that the stitches of the 96 radial belts were processed with the same tightness and the same length.
Bao Jinjin told reporters that from the establishment of the manned space project to the safe return of the Shenzhou 13 spacecraft, the R&D team for the recovery and landing subsystem has gone through 30 years.
After inheritance from generation to generation, the younger generation has steadily taken over the baton of career and spiritual inheritance from the hands of the previous generation of aerospace achievements, and continued to write the epic of aerospace recycling people.
China Youth Daily, China Youth Daily reporter Qiu Chenhui Source: China Youth Daily
April 18, 2022 Version 08