(For Wanwan tyrant Tori, that is, the leader of the alliance - Xiaoding - Dada's update 1\/25)

"Welcome Director Liu to inspect the work..." When Liu Yijiu and Long Yaohua arrived at the Ministry of Aerospace, a group of big men came to shake hands with Director Liu, and some big men even said such words jokingly.

"Director Du, aren't you? Isn't this a kid?" Liu Yijiu's face turned red. Even though he felt that his face was thicker than the city wall, he could even defend against nuclear bomb attacks. Under such circumstances, he could not resist being teased by the big men of the Aerospace Department. "If my father Qian knew about it, he would not break my legs!"

"Minister Qian doesn't know. You are our God of Wealth! This time I will send us funds again, so it's too late to welcome..."

"Okay, let's go to the conference room to talk in detail!" Long Yaohua was a little amused. Now the people from the Ministry of Aerospace Industry are more enthusiastic about Liu Yijiu than the officials from the Ministry of Finance.

After some greetings, Liu Yijiu saw Qian Xuesen smiling at him, and even Du Bin, the instructor who guided him into the aerospace field.

Several bigwigs of the Beidou system are also here, which shows the importance the Ministry of Aerospace Industry attaches to his visit.

"This time, I think everyone already knows some situations. The Ministry of Aerospace and the Ninth Academy have not cooperated once or twice. Now both of you have long-term and stable cooperation, so there is no need to introduce it again." Long Yaohua presided over the meeting. After everyone sat down, he spoke, "This time, it involves the country's most secret project, Dongfeng-31. At present, this project is still in the stage of theoretical research and demonstration. The Ninth Academy is not very familiar with the intercontinental ballistic missile business, but still has strong technical strength in some related technologies. More importantly, the Ninth Academy has money!"

Long Yaohua's introduction made the big men in Aerospace laugh.

Indeed, the Ninth Court has money.

Although Dongfeng-31 is the country's most secret project, it is no secret for those involved in this project. Liu Yijiu's Ninth Academy is also top secret, and even the Computer Research Institute of their Ninth Academy and other units are still responsible for some tasks.

"Xiao Liu, I heard you load this missile onto the ship? What kind of ship can you use to load it?" Du Jingkun was very suspicious. Judging from their current situation, it was not too easy to install the Dongfeng-31 onto the battleship in the hands of the Ninth Academy after the development was successful.

Not to mention the weight, just because the diameter is too large, it is not an easy task.

Moreover, it is even necessary to ensure that it is launched while moving at sea.

"Yes, although the 13 key technologies in our project currently have a large number of technologies obtained during the Dongfeng-22 research, they are severe challenges in solid fuel engines, propellant synthesis, elastic cone composite material manufacturing, and large special trailer manufacturing. It is difficult to successfully develop in a short period of time. Every technology needs to be continuously broken through!" Qian Xuesen also felt that Liu Yijiu was a little whimsical, "In fact, Dongfeng-31 is not suitable for boarding the ship, and the diameter is too large."

After the Dongfeng-22, the 202 project was dismissed in 1983 due to Liu Yijiu's suggestion, the "large diameter, basic type, serialization" plan proposed by the joint argumentation team was recognized by ******* and the Military Commission. In the same year, Dongfeng-31 was launched.

This is two years earlier than in history.

However, it has not been possible to make greater breakthroughs in key technologies of these missiles due to early research.

Especially large solid fuel engines, composite solid propellants, composite materials, etc., and even large special trailers, there is no experience in China.

Dongfeng-6 and Dongfeng-7 have studied these technologies for a long time, and the basic data and technologies for research are in handy at this time.

"Large diameter is not a problem. The problem is that we need the Dongfeng-31 to have higher hit accuracy, longer range, and faster speed. Of course, if the diameter can be made smaller and the manufacturing cost is lower, this is better. Rocket engines, hasn't the large solid rocket engine we jointly developed with you have been tested? This is not a problem. As for other things, we don't need to do trailers, and we can get the propellant synthesis, and the rest is composite materials, which we can solve..." Liu Yijiu said without exaggeration.

It immediately shocked some of the big men of the Aerospace Department.

If so, the Ministry of Aerospace Industry only needs to solve the problem of heavy trailers to allow this long-range intercontinental ballistic missile to be launched automatically!

"Really? Can you get the process of promoting the synthetic agent? The speed of the elastic cone will exceed Mach 10 after entering the atmosphere. How to solve the heat protection problem at that time?" Qian Xuesen asked Liu Yijiu with a frown.

This kid hasn't talked to him well for several years, and now he doesn't make drafts on bragging!

"Although the Red Star-10 missile used by Nippodosan uses a single solid propellant, the end-hydroxyl polystyrene dilute allows this missile to reach a speed of Mach 12 outside the atmosphere. If we conduct new research on this propellant, is it easier? As for composite materials, we can use organic compounds such as aramid fiber/epoxy resin shell to reduce the weight of the missile shell. As for the fairing at the top and the heat protection problem solving, it will be easier. If we don't say much about it, we can provide at least two types of..." Liu Yijiu did not brag about it.

For materials used for heat protection, they have the most advanced material in the world - graphene!

"Then you would like to talk about how to solve the problem of heat protection in the reentry section of missiles? Should we tell you about the design ideas?" Du Zhongkun was a little dissatisfied with Liu Yijiu's bragging.

The aerospace tycoons are all unhappy.

If Liu Yijiu couldn't solve these problems and was just bragging here, he would probably be beaten up after the meeting.

Obviously, seeing that the big guys around him looked bad, Liu Yijiu didn't care at all. This time he stopped giving them graphene, but instead proposed a solution to Dongfeng-31 in history. However, some of them are sorry for Professor Pan Ding who has developed this material.

He is too familiar with the design of Dongfeng-31.

He immediately shook his head, "You think this thing is kept secret, and there is nothing mysterious about it. Isn't it because of the miniaturized warhead design that makes the fairing on the top sharper, resulting in the aerodynamic heating effect of the warhead after it reenters the atmosphere. The carbon/quartz ablation material used by Dongfeng-5 cannot prevent the heat generated at a higher speed..." Liu Yijiu's words surprised many aerospace masters!

This is a top secret thing.

How did this kid know?

Youdao is an outsider watching the fun, an insider is a good person, and Long Yaohua is an outsider. He is often boycotted by these technical masters. Liu Yijiu obviously avenged him. Although he didn't understand what Liu Yijiu said, he was obviously very profound. Moreover, he was shocked by the big guys in the aerospace industry, and he naturally felt happy.

"Then tell me what materials should I use!" Even Qian Xuesen was a little anxious.

If these problems are solved, Dongfeng-31 will soon be able to enter the sample trial production work.

The process can be improved many times.

"It's very simple. Using high-purity viscose-based carbon fiber can solve this problem. I think everyone should know that in order to reduce weight and increase strength, our fighter jets and helicopters use a large number of composite materials..." Originally, Long Yaohua thought that Liu Yijiu wanted to provide graphene to the Ministry of Aerospace.

But I didn't expect that this kid had other materials.

In this case, graphene was not taken out, which shows how much attention this kid attaches to graphene.

Is a material really that important?

"High-purity viscose-based carbon fiber?" The aerospace tycoons who know materials all frowned and thought.

"How about it, let's get started? If we cooperate, we will continue to talk. If we don't cooperate, forget it. Just pretend I haven't said it." Liu Yijiu said with a slanderous smile.

He was so mean and paused at this time.

It was like a man taking off his pants and was about to pounce on a beautiful woman who was flirting with her head. Then the beautiful woman told him to give him money, and if he didn't give him money, he wouldn't continue...

At this time, what other ways do men do besides giving money?

After all, I took off my pants and was sure that it wasn't a fairy dancing or something.

"What do you mean to cooperate with us?" Du Zhongkun understood that the Ninth Hospital had a great appetite.

"Of course, we have so many technologies provided by us, can we not interfere? Although we are not proficient in the overall technology of the full bomb and high-precision guidance, materials and other things are not a problem. We can't give you the technology in vain. When you sell missiles to us in the future, you will not be able to ask for a price all over the place?" Liu Yijiu said jokingly and seriously.

"As long as the materials you mentioned are proven to be valid, I will cooperate with you!" Mr. Qian spoke, although this feeling was particularly awkward.

"Everyone knows that carbon fiber is relatively heat-resistant, but it is not easy to make it into a fairing with carbon fiber, and it has very high strength. It just so happens that our Ninth Hospital has a lot of research on materials in this area, so it has the industrial production technology of this material!" Liu Yijiu did not say that this is actually a one-level material used to replace graphene with too high cost.

The production cost of graphene is too high, but the strength is sufficient, so the Ninth Academy has put in the effort to study carbon fiber.

The high-purity viscose-based carbon fiber he mentioned has not been successfully developed yet, but he knows the formula, so it will not be too difficult.

“Continue…”
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