The military-industrial scientific research system of the academic master

Chang Haonan was not prepared to fully take over the development of solid rocket boosters, so at the meeting he only asked Lin Chenggang to select important information and send it over.

The other party's actions were also very agile. That afternoon, they sent three confidential personnel to deliver a batch of screened documents and information to the Torch Laboratory.

Although it has been screened, various storage devices and some necessary paper documents are still packed into a large password box.

After completing the handover, he immediately got into the computer room and began to verify his conjecture at the meeting yesterday.

It wasn't until dinner time the next day that Chang Haonan returned to the office, and then called his founding disciple, Li Yabo.

Thanks to the experience and knowledge accumulated during his doctoral studies, the latter quickly turned to theoretical research after graduation.

Due to his strong ability and very few confidential research fields, he is able to publish many high-level articles every year, many of which are in top journals such as Science or Nature. As early as two years ago, he was naturally promoted to associate professor. job title.

In addition, because Yao Mengna is currently raising a baby at home, and the other teachers in the laboratory are responsible for projects outside the home, he has gradually begun to take charge of the daily scientific research work of the laboratory.

"Teacher, you are looking for me."

Li Yabo walked in lightly.

"Yes, you sit down first."

Chang Haonan nodded, tapped the pile of paper he had just printed out on the table, and placed it in front of the other party:

"Yabo, take a look at these articles. They are related to the oxidation behavior of metal materials."

In fact, he had some plans for the next step.

However, in order to avoid Li Yabo from making preconceived judgments, and of course to let the other party understand the basic situation, no more specific instructions were issued immediately.

However, after Li Yabo lowered his head and glanced at the title of the paper, he was stunned for a moment, then quickly flipped through it, then raised his head and looked at Chang Haonan:

"Teacher, I have read these papers before..."

Now it was Chang Haonan's turn to be surprised:

"Have you seen them all?"

Li Yabo nodded:

"In fact, I was even the one responsible for reviewing the latest article..."

"..."

Chang Haonan suddenly had the feeling that "when children grow up, they also learn to pretend to be invisible."

"Okay...then I'll just tell you."

He cast his eyes on the preliminary calculation results on the monitor screen next to him:

"I need you to follow their ideas and re-verify the AP/HTPB/AI system...or to expand, the energy release characteristics and oxidation reaction mechanism of all aluminum-based system solid propellants."

Hearing this request, Li Yabo's eyes flashed with surprise.

Based on his understanding of his teacher, this "re-verification" does not mean simply repeating the other party's experimental content according to the content of the paper.

Rather, we need to produce different results for the same research object.

"You mean...there's something wrong with their experiments and characterizations?"

As a reviewer of one of the articles, Li Yabo was very confident that there would be no serious errors in the analysis and derivation process.

However, reviewers and editors will not be responsible for verifying the data in the paper, so if something goes wrong, it is most likely due to this aspect.

Chang Haonan took a deep breath and organized the language in his mind:

"I'm not sure if there are any problems with the data, but their study on the mechanism of the thermal decomposition process of the three-component AP/HTPB/Al propellant, which is the main premise of the entire analysis process and decomposition kinetic calculations, is consistent with my molecular simulation results. Not very good..."

"ah?"

Li Yabo's eyes almost darkened when he heard this judgment.

This is equivalent to directly misapplying the first formula when doing physics problems. Then no matter how accurate the subsequent process is, it will only go further and further away.

"But are the kinetic parameters they finally calculated consistent with the Kissinger equation and the Ozawa equation?"

"It's hard to say..."

Chang Haonan shook his head:

"It may be that the conclusions were drawn first and then the experiment was done, so some fine-tuning was done to the data, or it may be that a blind cat encountered a dead mouse... You should know that with this kind of research topic, even if you just formulate a theory If the model is forced to fit, as long as it is not too outrageous, it will be close to the previous one.”

"this……"

Li Yabo already had an unbearable expression on his face:

"But the papers published by MIT... won't make such low-level mistakes, right?"

Due to the requirements for the publication cycle of papers and the basic trust among peers, in addition to the authenticity of the data, reviewers will basically not consider situations like what Chang Haonan said.

To a certain extent, it is part of the fool-killing master.

"This is not a low-level mistake..."

Chang Haonan curled his lips:

"This part of the content has little to do with the macroscopic combustion characteristics, but is related to the microscopic mechanism... Even if there are colleagues to verify it, as long as it is not actually filled into the engine, the results will not be obviously wrong, and even if In case someone who is engaged in chemistry finds a problem, they can also explain that the focus of this article is on engineering theory rather than pure theory..."

The error-free version is being read! 6=9+Book_Bar debuts this novel.

Hearing this, Li Yabo could only lament that he was still too young after all:

"So what you mean is..."

"Further decompose the thermal decomposition process into three processes and recalculate."

Chang Haonan took a piece of paper from the side, on which several lines of content had already been written:

"The first stage is the low-temperature slow weight loss stage. During this process, the AP component will undergo a solid-solid phase change from cubic to orthorhombic;"

"The second stage is the medium-temperature rapid weight loss stage. On the one hand, HTPB begins to undergo an endothermic melting reaction, which has a certain antagonistic effect on the exothermic decomposition reaction of AP. At the same time, HTPB begins to coat the crystal surface of AP, affecting the local decomposition reaction of AP and weakening the activation of the possible reaction center of the latter;"

"The third stage is the high-temperature slow weight gain stage, that is, the remaining small amount of HTPB begins to further decompose, some aluminum particles melt, and gradually begin to oxidize from slow to intense..."

"..."

Li Yabo did not just look at the page in front of him, but quickly took a pen and began to add content next to him...

It was not until about half an hour later that Chang Haonan, who was already a little dry-mouthed, finally stopped describing.

The piece of paper in front of Li Yabo had already turned into a notebook...

"Then I'll do it right away..."

He reviewed the contents of the notebook again, and then stood up.

But he was immediately stopped by Chang Haonan from behind:

"Wait a minute."

Li Yabo turned around:

"Teacher, is there anything else I need to pay attention to?"

Chang Haonan took out an envelope from the drawer:

"I'll write you a letter of introduction. When you do the combustion characteristics experiment, remember to go to the Institute of Mechanics of the Academy of Sciences and use a shock tube for ignition. This will make the heating process much shorter than the ignition delay time of solid fuel, and it can also restore the pressure environment of the actual engine when it is working, which is much more realistic than the flat flame burner and laser ignition..."

And because Chang Haonan never mentioned this research and the hypersonic weapons project So Li Yabo hadn't reacted yet, holding the envelope in his hand with a little hesitation:

"As for the shock tube... our school's aerodynamic science and technology laboratory next door has one, and the director of that laboratory has cooperated with us many times, and is familiar with both the business and the process..."

He was interrupted by Chang Haonan when he was halfway through his words:

"The performance of our school's one is not enough. I need an initial working pressure of 25-30 atm. At present, not to mention the domestic one, only Huairou can meet the requirements in the world."

In fact, this is also a benefit brought by the development of ultra-high-speed wind tunnels.

Except for China, there is no other country that has such abundant resources to use high-performance shock wave generators for the study of combustion chemical kinetics.

Until this time, Li Yabo finally realized something, and his expression gradually became solemn:

"I know..."