When I am reborn, I just want to be a top student

Looking around the world, any country with the ability to launch rockets has experienced rocket launch failures.

Among them, rocket engine explosions have never been uncommon.

However, compared with other countries, the number of explosions in this regard in our country is definitely the lowest.

The reason why there are so few explosions is that our aerospace workers have high demands on product quality day after day.

For example, at this moment, after hearing about the explosion, Han Ming went straight to the base without delay. After arriving at the place, he immediately began to analyze the cause.

If it were abroad, there would definitely not be such speed and attitude.

In addition, there are technical reasons.

Limited by the capital investment in the aerospace field, the development path of my country's rockets has always been based on the idea of ​​low cost and high reliability. Basically, it follows the technical route that the bald eagle and the Russian bear have already taken and "eliminated", which is in line with the steady development idea of ​​small steps and fast progress.

The circulation method of rocket engines is the gas generator cycle, which has a simple and reliable structure.

The fuels also used are unilateral dimethylhydrazine and nitrogen tetroxide, and the boiling points of these two substances are 63°C and 21.2°C respectively. At room temperature, these two substances are almost all in liquid state, which means that the fuel tank and engine materials do not need to experience low temperature challenges and only need to consider high temperature environments.

In this way, it becomes much easier to analyze the cause of the rocket engine explosion.

For example, reasons such as structural instability or incomplete fuel combustion can be eliminated in the shortest time possible.

After observing the scene, Han Ming had roughly identified several possibilities in his mind.

However, before he could say it, Wang Donglai had already expressed his guess.

For a moment, it attracted the attention of everyone present.

"Mr. Han, I may have discovered something!"

Wang Donglai held the document in his hand and spoke to Han Ming in a very serious and confident tone.

Hearing Wang Donglai's words, Director Ding, Han Ming and everyone else focused their attention on Wang Donglai, with a curious look in their eyes, wanting to know what Wang Donglai had discovered.

"Academician Wang, what did you find?"

In fact, when Han Ming heard Wang Donglai say this, his first reaction was that it was impossible.

I couldn't even be sure, but then Wang Donglai said he had made a discovery. How long had it been since then?

The time is too short, it is simply impossible.

Although he thought so in his heart, Han Ming did not show it.

"Engineer Han, the document in my hand contains various data about the rocket. After reading it, I found that some of the data is wrong."

"Then I analyzed the data and concluded that the explosion was not caused by the quality of the engine or the problem itself, but by external factors."

When these words were spoken, everyone present was shocked and their faces changed.

The meaning of Wang Donglai's words is very clear.

Since it is not a problem of engine quality and fuel, it is an external factor.

As for the remaining possibilities, no matter which one it is, once it is found out, a problem arises, that is, someone will be held responsible.

Thinking of this, Director Ding couldn't sit still anymore and said, "Academician Wang, right? Can I ask what you based your judgment on?"

"Do you have confidence? Are you sure?"

Director Ding asked three questions in a row. Although he still had a smile on his face, he revealed a sense of oppression.

If Wang Donglai's judgment is correct, then Director Ding, as the leader, will inevitably be held responsible.

Therefore, Wang Donglai expected Director Ding to behave in this way.

At this time, Han Ming also spoke.

"Academician Wang, there are many reasons why rocket engines explode, such as uneven fuel combustion, engine quality problems, or errors in the overall control system."

"A rocket engine is an extremely precise product. Any problem may lead to an explosion."

"In the past, if we wanted to analyze the cause of an explosion, we had to combine the analysis of the explosion site with the judgment of the data, and finally eliminate the causes one by one before we could finally identify them."

"Every explosion is a growth in technology and progress for us, so we are not in a hurry. In the process of finding the cause of the explosion, we are also reviewing the process of progress together."

Han Ming said a lot, but it was confusing.

But everyone present was smart, so how could they not understand Han Ming's meaning?

All these words were actually reminding Wang Donglai that the explosion of the rocket engine was an incident, which was serious and not serious at the same time.

As long as we can find the problem, everything is easy to deal with.

There was a vague intention of patching up for Wang Donglai's next words.

Wang Donglai could also hear it, but he didn't care. He continued, "Everyone knows that I study mathematics, so the first thing I thought of just now was to use this data to study the cause of the explosion."

"Fortunately, I have some talent in mathematics, and I have made some achievements."

After hearing Wang Donglai's words, everyone present was speechless.

If Wang Donglai does not have talent in mathematics, I am afraid there are not many people who have talent.

So when everyone heard Wang Donglai's self-deprecating words, they were truly speechless.

Wang Donglai didn't know that his casual self-deprecating words made everyone speechless.

"I made a simple model based on these data and concluded that the rocket engine exploded at the 15th second."

"So, I used some linear formulas to calculate and ruled out the explosion as a result of unstable engine combustion."

"Data is objective and will not lie. Through the data in this document, I have also analyzed that there is no problem with the overall control system of the rocket."

"And the reason for the explosion was that I noticed a piece of data."

"After comparing the thrust data of the rocket engine one second before the explosion and at the time of the explosion, I have a guess that the explosion this time may have occurred on the rocket engine."

Hearing this, Director Ding couldn't wait to ask, "Academician Wang, do you mean that the cause of the explosion this time was the rocket engine?"

There was a hint of expectation and relaxation in Director Ding's eyes.

He stared at Wang Donglai, waiting for his answer.

Facing Director Ding's expectant look, Wang Donglai gently shook his head and said, "Not really!"

"Through the comparison of data, I noticed the change in thrust, so I focused on the rocket engine. After further analysis and comparison, I also noticed a problem, that is, there was a shutdown signal before the rocket engine exploded."

"The cause of this explosion may be hidden in the shutdown of the rocket engine."

Wang Donglai expressed all the guesses in his mind.

Director Ding was a little disappointed, while Han Ming seemed to be thinking about something.

"Academician Wang, you said all these things, but you still didn't tell me what the cause of the explosion was?"

"Moreover, you can see so much from these data in such a short time. It's really unbelievable."

Director Ding said to Wang Dong disappointedly.

Before Wang Donglai could speak, Han Ming spoke.

"No, Director Ding, Academician Wang has said enough. Next, we just need to look for the remaining parts in a targeted manner, and we may be able to analyze the cause."

"Analyzing the cause of the explosion through changes in data has been proposed before, but the requirements are too high." "It requires both extremely high mathematical achievements and sufficient understanding and knowledge of aerospace technology. I used to think this was impossible."

"Now, I suddenly have a strong expectation."

"Academician Wang, if we can find the cause of the explosion according to your analysis this time, I think the mathematical formula of this analysis data will not be much worse than the successful development of a rocket engine."

Han Ming said this very seriously and from the bottom of his heart.

He really thought so.

The research and development of each rocket engine requires a lot of time and testing, and explosions can cost at least several million dollars.

This is just the economic cost. If you add the time cost, it will be even greater.

Aerospace technology is a field where the strong become stronger, and we cannot afford to fall behind.

So time is still very important to us.

If the mathematical formula developed by Wang Donglai is really effective, it will play an extremely important role in the development of my country's aerospace technology.

At the very least, it can help rocket engine developers reduce the time spent finding the cause of the explosion.

The talents in our country who are able to engage in aerospace technology are undoubtedly top talents, and their labor costs are extremely high.

The benefits of being able to save the time of these top talents are unimaginable.

That is why Han Ming said this.

Wang Donglai acted very calmly and said, "Engineer Han, there is no rush. It's just a set of mathematical models and a few mathematical formulas."

"Only after we find out the real cause of the explosion can we say that there is nothing wrong with my model and formula."

"It's still a little too early to say this now!"

Engineer Han nodded in appreciation of Wang Dongli's calmness.

Without saying anything more, he suppressed the several guesses about the causes of the explosion in his mind and began to conduct special tests based on Wang Donglai's guesses.

There are many reasons that can affect a rocket engine and cause it to shut down.

For example, a rocket liquid oxygen tank, an electrical circuit, or a propellant injector.

With the direction checked, the speed will naturally be much faster.

In this experiment, the amount of fuel loaded inside was not much, so the power after the explosion was not very great.

Many of the components are well preserved, so it is also helpful for inspection.

Although it is not deep winter in February, the temperature is still very cold.

What's more, the natural conditions in places where rocket engines can be tested are not very good, which makes it even colder.

Under such circumstances, conducting detailed inspections of numerous devices is definitely a drudgery.

In just a moment, everyone's fingers were frozen stiff.

However, no one gave up, and they continued to carefully check the status of each device, without missing a single one.

Wang Donglai did not suggest waiting until tomorrow when it is warmer to check again, or bringing the devices indoors for inspection.

On the one hand, we are racing against time. The sooner we can find out the cause of the explosion, the more time we will have to make changes.

On the other hand, no one can guarantee that if these devices are brought back indoors, there will be no new damage, which would affect the analysis of the cause of the explosion and lead to the opposite effect.

Half an hour!

One hour!
While everyone was busy checking the devices, Wang Donglai was not idle either. He continued to hold the documents in his hand and analyzed them again.

When he was in school, Wang Donglai often heard students who were not good at math say something.

What’s the point of learning math well? Do I need to use linear equations or functions to buy groceries after graduation?

This sentence seems to make sense, but it is actually biased.

The usefulness of mathematics is reflected in all aspects, and the extent to which it is used and the effect it achieves depends on the individual's mathematical attainments.

In the hands of ordinary people, it may be of no use after graduation.

If it is a simple calculation, just take out a calculator. There is no need to use your brain at all. In fact, using your brain may not be as fast as using a calculator.

But in the hands of a genius like Wang Donglai, mathematics is different.

Just like now, by analyzing various data of the rocket engine and establishing a mathematical model, a rough conclusion was drawn.

Then, through several refined linear formulas, we found the problem more clearly.

This ability is worthless in the eyes of people who don't know the value of it, but people who know the value of it can see that it is of great value, just like Han Ming.

soon.

A slightly excited voice came: "Engineer Han, come over and take a look!"

Hearing this slightly excited voice, Han Ming walked over without hesitation.

Director Ding and others also stopped what they were doing and turned to look over.

"Engineer Han, look at this liquid oxygen tank!"

Han Ming walked over, turned on the light, and began to check.

With the help of the light, Han Ming quickly discovered something was wrong.

The screws on the liquid oxygen tank are wrong!

Some were broken, and some were twisted.

With his brows furrowed, Han Ming was thinking rapidly in his mind.

Director Ding waited for a while and found that Han Ming didn't speak, so he walked over and noticed the problem with the screws of the liquid oxygen tank.

After only a brief thought, he said with certainty: "This explosion should have nothing to do with the liquid oxygen tank!"

"It's just that the screws are broken and twisted. It won't cause the engine to explode!"

Han Ming shook his head and said, "Not necessarily!"

"Engineer Han, I don't have any objection to Academician Wang, but I think we haven't even done telemetry, external and optical measurement yet, and we haven't shown these data to Academician Wang. If we can analyze the cause of the explosion with just that little data, it would be incredible!"

"In my opinion, we should still conduct the analysis according to the original process."

"After all, we can't afford to waste any more time."

When Han Ming heard Director Ding say this, his brows suddenly frowned, and he was about to speak out in rebuttal.

Wang Donglai’s voice rang out.

At some point, Wang Donglai also came over, apparently having heard what Director Ding said.

There was no expression of anger on his face, he remained calm as always.

But the next moment, the words that Wang Donglai said changed the expressions of the two people. (End of this chapter)