Chapter 143 Tolerance for Failure (5k)
“This is a good thing!”
When Chen Yuanguang’s voice came from the laptop, the core of the Trailblazer 2 was here. The team members didn't dare to speak because they didn't know whether Chen Yuanguang really thought so or was mocking him.
Although based on the results of everyone's usual interactions with Chen Yuanguang, he never expresses his dissatisfaction in an ironic way, but that is based on the premise that such a big problem has never happened before.
The Pioneer 2 explosion, not to mention the direct losses, the time cost of the delay is more important, because whether it is the contract signed with the European Space Agency or the China Aerospace Group, there are Time requirements.
This failure is likely to delay the performance of the contract, so everyone has a lot of thoughts in their hearts and looks sad on the surface.
Yang Jiashan stood up and spoke first: "Boss, it was me who caused the explosion this time. I did not adhere to our previous principles when designing the Vulcan. I took more advanced measures in the rear section of the engine. A simple high-temperature alloy single-wall structure uses a portion of hydrogen and the exhaust gas generated by the gas generator as a cooling gas film, and then adds a layer of thermal barrier coating to the inner wall of the nozzle to improve heat resistance. .
At the same time, a yttria-stabilized zirconia ceramic coating is added to the outer layer to provide heat insulation, and an alloy bonding layer is used between the ceramic coating and the base metal to buffer the two. The difference in thermal expansion coefficient
The alloy bonding layer here is MCrAIY, of which M uses a compound of iron, carbon monoxide and nickel. I am too impatient and want to achieve the goal between our second plan and third plan at one time.
I guess it's because there have been too many changes, and the engine of the Trailblazer 2 is a bundled engine. The production process of the production factory is not mature enough during the production process, and there are too many changes. The engines in different positions produce errors during the ignition process. The thrust is different, which further leads to the explosion caused by the unbalanced force in the air. ”
Yang Jiashan is an expert recruited from the China Aerospace Research Institute. He is the proud disciple of Liu Daxiang, an academician in the aerospace field, and is the core developer of the engine of the Long March series rockets.
The reason why he started from research He jumped out because he wanted to do something interesting. The desensitization period alone delayed him for a year, so he wanted to jump out and give it a try.
On the other hand, it was also because the light armor space flight was attractive enough. , the institute's rocket launches are mainly for stability, and a lot of verification is required before launch to ensure that it is foolproof.
Compared with Guangjia Aerospace, the number of launches of the institute can be counted on one hand. This is just one month's worth of Guangjia Aerospace.
And in the foreseeable future, Guangjia Aerospace’s rocket launches will be in line with SpaceX. In that case, rocket launches may be carried out dozens of times a week.
The research funding of the two is completely incomparable.
Yang Jiashan made the decision to join before the launch of Light Armor Aerospace's Trailblazer 2. With the success of Trailblazer 2, when he was still in the desensitization period of his original unit, he had many colleagues. I approached him to inquire about the situation and expressed my desire to join him in joining Light Armor Aerospace.
The pursuit of technology by men in science and engineering makes them want to live in a free environment.
After Yang Jiashan officially joined the company after the desensitization period, his rich experience quickly established his authority in the engine R&D team and became a well-known person in charge.
Lin Tianmin, the previous interim head, served as deputy team leader.
Yang Jiashan took the initiative to take responsibility, and Chen Yuanguang's voice continued: "I really think it is a good thing to blow up.
We are launching a rocket, whether it is NASA or SpaceX in the past , how many times have we exploded?
Just because we have never failed before does not mean that I cannot accept failure. On the contrary, if it never explodes and we always hold on to the concept that launching a rocket cannot fail, then this string will Sooner or later it will collapse.
Because this violates objective laws. We are engaged in scientific research and are a scientific research institution. We need to respect objective laws.
This explosion is better than the explosion when we take the space station to the sky in the future, and it is better than the explosion when we send our own astronauts to the sky.
There is no team in the world that can only win but never lose. I have watched some teams in football matches that have won dozens of games in a row. They are very tired because they are always tense. When they lose, they feel relaxed. No more carrying such heavy baggage into competitions.
So this explosion is also a relief for us. As long as we can learn from the problem and make progress next time, even if there is another explosion next time or the next time, I think it is a good thing. .
Dr. Yang just mentioned that too many changes in structure and materials have caused inconsistent thrust in engines built during factory production. Is this a conjecture or a fact? "Chen Yuanguang doesn't want to dwell on the reasons for failure, but quickly thinks about improvement plans.
His time is too precious. Countless people come to him every moment, and he still has a lot of time for himself. To think about the problem, Chen Yuanguang needs to seize the time of each meeting to convey the correct ideas.
Yang Jiashan said: "This is my guess, because the rocket just exploded, the sensor has not been returned yet, and the data sent back during the launch process has not been analyzed yet.
We need to wait for the data. When the data comes back, we will Form a detailed report."
Chen Yuanguang said: "Okay, I have an idea for your reference. Now that the structure has been changed, why not be more bold?
Dr. , do you want to make major changes or go back?
Return to plan one. ”
Yang Jiashan said: "I don't know."
This is the truth. He just failed. Failure cannot prove that his choice is wrong, but it will somewhat undermine his self-confidence.
After Yang Jiashan arrived, he established authority based on his experience. The others were all freshly graduated with Ph.D.s or masters. At most, they had played with small rockets or data simulations. How could anyone like him have handled the Long March 3 and Long March? No. 5’s core R&D personnel than.
But he still insisted on making such big changes on this generation of Trailblazer 2 because he hoped to surpass the carrying capacity of Falcon 9 at once.
If the Vulcan engine is not drastically modified, the thrust-to-weight ratio of the Vulcan engine is not as good as the Merlin engine (the engine used by Falcon 9), which means that their Trailblazer 2 is not as good as others. A product of more than ten years ago.
The first launch of Falcon 9 was in 2010, so Yang Jiashan hopes to get it right at once.
Chen Yuanguang said: "You are more professional than me, so you can make judgments. If you want to make major changes, you can refer to my ideas:
Change the nozzle extension into a spiral The tube bundle structure uses a large number of nickel alloy tubes that are arranged and welded in a spiral manner to allow hydrogen to flow inside. Through this flowing hydrogen, the thrust of the engine is remotely controlled, so that the thrust of different engines is consistent
Even if the process causes it. There is a deviation in the thrust of the engine, which can be corrected the day after tomorrow."
"Boss, I hope to make major changes in my heart, because it would be a pity to go back after reaching this point, but we are afraid that we will not have enough time.
We will complete the first cargo transportation for the European Space Agency before the first half of next year, and we will complete the first cargo transportation for Tiangong-1 in the first quarter.
Because they all involve docking with the space station, we have not yet conducted sufficient testing and calculations in this regard. "
Chen Yuanguang said: "It's okay. We have so much cash on our books. The worst we can do is lose a little money. Oh no, we won't lose money. At most, we will collect less on the final payment.
According to our cost, we won’t lose money at all. "
Chen Yuanguang continued: "You can discuss my ideas. I will draw a sketch of my ideas and show it to you. Otherwise, the spiral tube bundle type is too abstract. ”
The members of the R&D team here knew that Chen Yuanguang really didn't mind what he said, so everyone started discussing it.
Although Chen Yuanguang said that he would leave the decision-making power to you, his direct leader Yang Jiashan has already decided to make major changes. The plan proposed by boss Chen Yuanguang is a major change, so naturally everyone will not continue to propose it without realizing it. Conservative plans are discussed around major changes.
“I think Mr. Chen’s idea is very reasonable. In terms of technology, we cannot ask our partners to achieve relatively large improvements in the short term. After all, we do lack some high precision. The small thrust between the engines will have The bundled engine has a huge impact.
The short-term pursuit of accuracy is unrealistic. I think the technical route mentioned by Mr. Chen is one of the options." After Lin Tianmin said it, everyone came out to express their thoughts.
The general idea is that they agree, and then they mention the points that should be paid attention to when adopting this technical solution.
After Chen Yuanguang finished drawing the sketch and put it on the screen, Chen Yuanguang said: "That's roughly it.
We will control the speed of hydrogen injection in these nickel alloy tubes to achieve the purpose of controlling thrust. This technical solution Remote control is easy to achieve, but the difficulty lies in calculation. The degree to which the amount of hydrogen gas changes the thrust needs to be calculated very accurately, otherwise we will fall into the same dilemma. "
As the center of public opinion, Chen Yuanguang and Guang Guang. Every move of Jia Aerospace has attracted the attention of the outside world, especially this time it was a failure and the rocket exploded, which aroused heated public opinion.
"It finally exploded. I thought that the God of Light would never fail. This year, it only failed once after six launches. It is normal. The probability is already low."
"I heard from the gossip that the explosion happened because the God of Light was not around. According to internal information, the Guangjia-type companies had severe Yuan Guang dependence."
"Isn't it normal to have Yuan Guang dependence? ? The first generation is hands-on with everything, so neither managers nor suppliers can deceive them. But after the second and third generations, they cannot control the details, and the company is prone to problems
It’s a good thing to have dependence. Besides, no rocket can launch without exploding.”
“According to Guangjia Aerospace’s live broadcast and public information, this launch used a deal with the European Space Agency. With the Vulcan engine that came, could the Europeans have played tricks on the technology provided? Are there any loopholes in the technology?”
“I don’t rule out this possibility, but if the technical loopholes cannot be found, the employees of Guangjia Aerospace Do you also have to take responsibility? ”
"This explosion is good for other companies in the commercial aerospace sector. Otherwise, it would be a disaster to be suppressed by Light Armor Aerospace. I specifically saw that before the successful launch of the Trail Blazer series rockets, those listed companies whose gimmick was rocket launches basically Public funds, securities firms, social security funds, etc. conduct research every week.
After the successful launch of Trail Blazers, it was rare for them to have an institution conduct research for half a year, and the stock price was firmly pinned to the floor. This is true for all commercial aerospace companies with national prefixes. This time, Guangjia Aerospace’s rocket exploded. It feels like they finally have a way to survive.” The super-large carrying capacity exploded because of the use of a new engine. They didn't even manage a small carrying capacity recyclable rocket.
Guangjia Aerospace has 40 billion in cash lying on its books. What do they have? 200 million in working capital, enough to burn it three times.
Guangjia Aerospace’s orders come from Europe, South America, and the national level. It’s hard for them to get private orders, even If the Rockets naming rights are to be sold to Heilan House, the gap cannot be bridged by a single explosion.”
Weibo was full of optimism, and Twitter felt like it was Chinese New Year, especially in the English streaming and simplified Chinese circles.
Chen Yuanguang and Guangjia Enterprises are the third object of hatred for this group of people after Huawei and BYD, and their PTSD levels are even higher than the first two.
“The failure of Wright Chen’s Guangjia Space Launch Rocket may trigger a crisis of trust in all its scientific research results.”
The English streaming media is still in use and may lead to simplified The middle circle becomes:
“All of Chen Yuanguang’s scientific research results are suspected of fraud.”
Returning to the English streaming media, it becomes:
“According to sources, all of Wright Chen’s scientific research results may be suspected of fraud. This is a strategic deception carried out by relevant parties in China to the outside world.”
Because English streaming media want to have a face, they will include China when making up news, trying to increase credibility, so that foreign people in an information cocoon will believe it.
Otherwise, Chen Yuanguang’s academic fraud alone could cause the U.S. stock market to crash, with the Nasdaq index falling by a total of 8%. This is too exaggerated. This possibility is only possible if China is pulled up.
English streaming media produces exaggerated negative news, Simplified Chinese media processes negative news, and English streaming media spreads processed negative news. The two are perpetual excrement generators for each other.
Within Guangjia Aerospace, the news about this failure and Chen Yuanguang's statement also spread throughout the company. Everyone agreed that Chen Yuanguang was a great person and a rare good boss.
After Lin Jia heard about it, he found Yang Jiashan. They happened to be returning to Shenhai from Yantai with the data and the recovered shell.
Now all Guangjia companies are in Shenhai, which is much more convenient for executives like Lin Jia who work on both sides.
"Team Leader Yang, I would like to have a general understanding of the reason for this failure."
Yang Jiashan looked at the long-haired woman opposite, who looked more like the boss's daughter than an executive. The young woman was very polite: "Mr. Lin, from the data analysis, it is mainly because we have used a total of eight Vulcan engines, and the thrust of different Vulcan engines in this batch is slightly different.
This discrepancy resulted in a loss of control during launch. ”
To be precise, Guangjia-based companies are more polite to Lin Jia than to Chen Yuanguang. First, because the other party will be angry. For the department she is in charge of personally, if the target is not achieved, it will be a storm. The rain of sarcasm and the angry tone of slapping the table can easily spread throughout the company.
Secondly, because of Chen Yuanguang’s girlfriend status, if the boss doesn’t do anything to you, the boss’s wife may do it to you. Get out.
Anyone with eyes can see that if you want to do something, make some achievements, and realize the value of life, Guangjia companies are a rare first-class platform.
For researchers who enter Guangjia Aerospace, salary is not the decisive factor. It only accounts for a small part. What you can do is the key. You can participate in rocket design as soon as you graduate. There is no complicated material to write, no Chores make you adapt, and you can start doing relevant work as soon as you get there
The production cost of a rocket is tens of millions at least. As soon as you graduate, you can participate in a project worth tens of millions. And with the launch frequency of Light Armor Aerospace, the cost is tens of millions a month. This is a once-in-a-lifetime opportunity.
You must know that SpaceX, which is the target of Light Armor Aerospace, received 3.6 million resume submissions (this is with Tesla). Everyone cherishes this opportunity and does not want to lose this opportunity by offending the boss lady. Chance.
The same is true for Yang Jiashan. During the desensitization period, he knew that many of his colleagues were also planning to switch jobs to Light Armor Aerospace. Some of them were already going through the desensitization process, and some were struggling.
There are many researchers with similar qualifications and abilities to him. He has a time advantage, and he hopes to maintain this advantage.
After listening, Lin Jia said: "I generally understand that Mr. Chen told you that he would accept failure next time."
Lin Jia received professional general training in aerospace at Jiaotong University. This is something everyone knows, so it is not surprising that Lin Jia can understand Yang Jiashan.
He quickly said: "Mr. Lin, Mr. Chen said this, but we will definitely not fail next time.
We will definitely be fully prepared before launching, and try our best on the computer. Run as many simulation data as possible.
Do a full static ignition test before launching. ”
Yang Jiashan heard that the other party could not tolerate failure and quickly promised.
In his view, this failure was an accident.
Lin Jia said: "Team Leader Yang, my view is the same as Mr. Chen's. I can accept failure, and I also know that it is normal for rocket launches to fail.
The main thing is This time is too sensitive, firstly because foreign media are trying every means to find topics to attack us. Such attacks may affect this year's Nobel Prize selection.
Secondly, because of our deal with the European Space Agency. It includes transactions on recyclable rocket technology and subsequent research and development.
The entire agreement is more like a framework agreement, and too many failures will affect the subsequent specific implementation of the agreement.
Therefore, at this point in time, we must try to avoid failure. "
After Lin Jia finished speaking, Yang Jiashan quickly said: "Mr. Lin, don't worry, if there is any doubt in the static ignition data before launch, I will postpone the rocket launch. "
He understood what the other party meant and waited until this time window passed before launching the rocket.
Lin Jia said: "Okay, but if we are sure, then we still launch. If we can carry Being able to surpass Falcon 9 is also a form of positive publicity. ”
There will be more at night. This chapter is 5k and there will be 5k at night.
It’s the end of the month and I’ll get a monthly ticket.
(End of this chapter)