The National Day movie "My Father and Me" has its own advantages and disadvantages: Wu Jing's "Riding the Wind" is the most burning, Zhang Ziyi's "Poem" is the most tearful, Xu Zheng's "Duck Prophet" is the most relaxed, and Shen Teng's "Young Journey" is the most witty. As a director's debut, Zhang Ziyi earned a handful of audience tears with her unique female delicacy. The film is based on the first generation of astronauts, especially the gunpowder sculptor she starred in, which is always facing dangerous challenges.
<h1 class="pgc-h-arrow-right" data-track="3" > dance with death, a sculptor on the tip of a knife</h1>
Whether it is a spacecraft in the sky or a Dongfeng missile array, it is inseparable from the solid fuel engine. In order for solid fuels to adapt to different engines, it is necessary to finely trim the solidified medicinal surface - people in this profession are called "gunpowder carvers". In "My Father and Me", Zhang Ziyi directed the "Poems", and the astronauts she played were the masters who repaired the gunpowder.
Although there is no explanation in the play, we all know that the heroine played by Zhang Ziyi has also died. What kind of occupation is so dangerous? That starts with their work. For the shape of gunpowder, the error must not exceed 0.5 mm. The technical requirements of excellence and the high-tech technology that cannot be deviated from the slightest deviation make people can only use knives to operate with their bare hands. However, the irreversibility of knife marks, the friction danger of static electricity and gunpowder, etc., all put forward almost harsh requirements for gunpowder engravers.
A small knife directly determines whether the rocket launch is normally in orbit and whether the missile power can be sustained and stable. A knife down, only a few tenths of a millimeter, but the impact on the launch of missiles and satellites is tens of kilometers. The force of each knife must be held just right. The concentrated operation cannot tolerate a little sloppiness, and the static electricity that can be seen everywhere is an extremely dangerous consequence once it rubs against gunpowder.
Gunpowder is tough, and under rough particles, the strength of the knife is difficult to grasp. More critically, knives made of metal will inevitably rub against the metal shell, and once a spark is generated, the consequences will be unimaginable. Then someone asked, can't you use plastic or other materials? Everyone can think of it, researchers have long thought about it, but other materials are not hard enough, and when trimming the gunpowder surface, they cannot achieve the expected effect. Once the force is excessive, the spark of friction is even more unpredictable.
<h1 class="pgc-h-arrow-right" data-track="5" > the leader who builds dreams for spaceflight and works hard</h1>
It is under such harsh conditions that generations of astronauts practice the duties of craftsmen of big countries in their posts. In order to minimize the error, the mother played by Zhang Ziyi in the play completed one experiment after another with her bare hands. The spirit of the predecessors of the aerospace industry is continued in today's gunpowder carvers. Xu Liping, who was born in Jiangsu, his parents were early astronauts, and he shuttled through the heavy weapons of a big country from an early age, so that Xu Liping truly felt the strength of the motherland.
After graduating at the age of 19, Xu Liping came to the place where his mother struggled as he wished, took over the baton of his predecessors, and cast the blood of youth in ordinary posts. Gunpowder engravers have extremely high requirements for errors, and Xu Liping can be accurate to 0.2 mm. What a concept this is – less than two sheets of A4 paper thick. There is no shortcut to take, except for the day-to-day refinement, Xu Liping poured the heavy trust of the motherland into the knife in his hand.
After trying again and again, revising again and again, I finally developed the most suitable plastic knife. In the field of gunpowder carving, Xu Liping and his team have more than 20 kinds of medicine surface shaping knives. What is even more valuable is that two have obtained national patents, and one has also been named "Li Ping Dao". The strict requirements in the repair process caused serious damage to his body. Maintain a sculpted posture for a long time, and the body appears significantly tilted.
The assistant who just joined the job was in pain after a long time, especially the hand that controlled the knife. And Xu Liping always smiled slightly, showing the calluses in his palms, which should be a revolutionary medal. Technical self-confidence stems from a high sense of responsibility for the motherland's aerospace industry, and even more from more than thirty years of hard work. Meticulous and bold, Xu Liping's personality has made him a leader in the industry.
<h1 class="pgc-h-arrow-right" data-track="7" > a great craftsman and an extraordinary strivers</h1>
When Xu Liping first arrived at work, he accepted a close-up dangerous experience. The master who led him specially arranged an "ignition test". The gunpowder that soared instantly turned into an explosion of mushroom clouds, and the shocking scene made Xu Liping unable to calm down for a long time. Nervous and surprised, Xu Liping kept the safety operation in mind and had a more intuitive feeling of the danger. Although my mother is a senior, listening to others and practicing it is still a completely different feeling.
Strict self-discipline, self-denial and self-discipline, there is no room for sloppiness in work. Two years later, in a scientific research attack, Xu Liping showed the first challenge of his life. His unit undertook the development of a key model engine, but the first two tests ended in failure. As the deadline approaches, a third trial is imminent. The fuel conundrum had to be solved, and the panel made the difficult decision to dig medicine in place.
Gunpowder carvers, to drill into the engine filled with propellant, surrounded by tons of gunpowder, dig a little bit to troubleshoot the fault. In the medicine digging commando team, Xu Liping was the youngest mechanic, and he had to go forward with the masters. The space is so narrow that you can't turn over, and you can only enter one person at a time. The pungent smell of gunpowder, the strong sense of oppression, in addition to the rustling of the shovel, you can even hear your own heartbeat.
"No matter how dangerous the work, someone has to do it, so why not me?" To ensure safety, the expert group stipulates that "each person should come out after a maximum of 10 minutes of work". The time is short, the requirements are high, and only four or five grams of gunpowder can be brought out at a time. Xu Liping, who sacrificed himself as a human being, once again put life and death aside, and he always had to do more than others. Finally, after three months of difficult medication, the failure was successfully resolved. But the long curling made it almost impossible for his legs to walk.
<h1 class="pgc-h-arrow-right" data-track="16" > postscript</h1>
"Every time you drop the knife, you can hear your own heartbeat. You have carved a small amount of gunpowder, and there can be no difference. Strategic missiles, manned spaceflight, and every weapon of a great power are inseparable from you. This is the award speech that touched China to Xu Liping in 2016. When we see missiles galloping and rockets taking off, when I hear Shenzhou flying in the sky and Chang'e exploring the moon, we should not forget the thousands of "gunpowder carvers" like Xu Liping!
This article is original by "a history teacher with feelings", welcome to pay attention and take you along with long knowledge!