Chapter 627 A submarine capable of carrying Julang-2

  The threshold for building a submarine is not low. The first is the material of the submarine shell. High-strength alloy steel must be used so that it can withstand the extrusion of strong water pressure and avoid being crushed underwater.

  However, this is only the first step. With suitable high-strength steel, it may not be possible to make a submarine, because the steel plate produced by the steel factory is flat, and the steel plate required by the submarine is curled.

The pressure hull of a submarine is similar to a boiler. It is a pressure vessel. As long as you have basic knowledge of engineering mechanics, you can know that a cylinder is the easiest to withstand high pressure. Therefore, whether it is a boiler or a submarine, it needs to be made into a cylinder. That is to say, the steel plate needs to be rolled into a steel pipe, but the diameter of this steel pipe is super large!

Even if the outside of some submarines does not look like a circle, it is because of the double hull. The outer non-pressure hull has a special shape, but when it comes to the inner pressure hull, it is properly a cylinder. .

  Submarines use high-strength steel. It is very difficult to roll this kind of steel, and when rolling, you need to control the precision.

After all, it is impossible to roll a steel plate into a steel pipe to achieve an absolute perfect circle, so there will be an eccentricity, the larger the bending radius, the higher the eccentricity value, which requires an advanced rolling machine, not only Not only does it require high pressure, but it also requires high precision!

  Currently, the plate rolling machine used by the diesel-electric submarine manufactured by Mingzhou Group is a second-hand product obtained from Lao Maozi. It is no problem to manufacture diesel-electric submarines with a displacement of more than 3,000 tons, but it will be difficult to manufacture nuclear submarines with a displacement of 7,000 to 8,000 tons. In the future, it will be even more impossible to manufacture strategic nuclear submarines with a displacement of tens of thousands of tons.

Hearing everyone's concerns, Qin Tao nodded: "Yes, if you want to build a large submarine, you can't do without a plate rolling machine. It was far-sighted when the superior didn't directly approve our 095 submarine plan. After all, it was just a PPT plan at that time. , the basics in all aspects are not yet available. By the way, Zhengyang, how is our plate rolling machine manufactured?"

  Qin Tao has a lot of affairs to deal with every day, and it is impossible for him to take care of everything in person. He just needs to arrange it.

  At the beginning, the large-scale 3D CNC bending machine was manufactured by the Huating No. 2 Water Pump Factory under Mingzhou Group, and the team led by Professor Hu of Huating University was responsible for the CNC equipment. It was made through the joint factory and school.

  After the plate bending machine was built, Qin Tao gave them a more difficult task: to manufacture the plate bending machine, and it was a large plate bending machine that could manufacture 10,000-ton nuclear submarines!

  Qin Tao didn't know the specific progress of these projects, but as his secretary, Xu Zhengyang had to know everything.

"Mr. Qin, the research and development of the machine has been completed at present, and it is entering the equipment assembly process. It is expected to be delivered to our Mingzhou Shipyard by the end of this year." Xu Zhengyang said: "According to the design index, this is an 8,000-ton three-roller The plate rolling machine can roll steel plates with a maximum yield of 1,200 MPa and a maximum diameter of 13.5 meters.”

(I checked the information and said that our submarine steel has a yield of more than 2,000 MPa. Personally, I feel that the bragging element is relatively large. A steel plate of 1,000 MPa can dive to a depth of 600 meters, which is enough. The depth of Western submarines is generally three to four hundred meters. So we set it at 1,200 MPa.)

  8,000 tons of pressure, this is definitely the best in the world! It can press a steel plate of 1,000 megapascals on both sides, and it can also be rolled into a diameter of 13.5 meters!

   Isn’t this too powerful?

  Everyone was professional and immediately realized what the data represented.

   "Awesome, even if we build submarines with a displacement of 20,000 tons in the future, we won't need a turtle back!" Huang Lao said first.

   "Yes, the Swedes still stuck our necks, saying that without the plate rolling machines they made, our submarine industry would not be able to progress. Now they will be disappointed!" Li Baotian was very excited.

   "That's right, now we have all the conditions, and we don't have to worry about nuclear reactors. At that time, we will have two 150-megawatt nuclear reactors. Now, our strategic nuclear submarines will be truly mature!"

  The diameter that can be rolled is of great significance, it directly determines the size of the submarine that can be manufactured!

At present, the domestic pressure hull can only be rolled to about eight meters, so the displacement of the 091 and 093 submarines is only five to six thousand tons. Although the displacement of the 092 ballistic missile nuclear submarine is large, it is because there are more turtles, and the pressure hull is still the same. big.

  Lao Maozi can only roll a pressure hull with a diameter of nine meters, so the displacement of their submarine is subject to the same restriction. However, what is the typhoon class?

  Of course, Lao Maozi innovatively used two nine-meter-diameter pressure hulls juxtaposed together. Although the submarine is huge, the internal space is actually a serious waste of space.

The diameter of the pressure hull of the largest Ohio-class nuclear submarine in the United States is only 12.9 meters. This is rolled out by the world's largest plate rolling machine in Sweden. Now, if the country has a 13.5-meter diameter plate rolling machine, it is safe. It is possible to manufacture a strategic nuclear submarine with a displacement of 20,000 tons!

"Yes, if we cooperate with the brand new Julang-2, it will allow us to have a real submarine-launched nuclear force!" Wu Shengli also became excited: "Taozi, after you go back this time, you not only have to continue To refine the design plan of the 095 submarine, we also need to design a brand new ballistic missile nuclear submarine!"

At the beginning, the first domestic solid ballistic missile was Julang-1. This missile took a long time to develop, but its performance was not advanced enough. It was just a medium-range missile with a range of 2,000 kilometers. According to The development of the navy means that it can protect the 092 nuclear submarine for combat readiness in the South China Sea. This kind of range can only reach some nearby bases, and it cannot even pass the center line of the Pacific Ocean.

   Therefore, Julang-1 only solves the problem of availability, and it must continue to develop.

  How to develop next?

   There is still a lot of controversy in China.

Julang-1 first went ashore and became the land-based Dongfeng-21. Then, on the basis of this mobile missile, Dongfeng-31 was developed. The follow-up Dongfeng-41 is also planned. Through these missile projects , China has a huge family of solid mobile missiles.

   Next, it is time to continue to develop advanced submarine-launched missiles on the basis of these technologies!

  JL-2 missile is actually very different from Dongfeng-31, and it can even be said to be newly developed. However, this missile uses a lot of land-based missile technology after all.

  Qin Tao was also thinking quickly.

According to the data of later generations, the length of the Julang-2 missile will reach 14 meters. In this case, the submarine pressure compartment with a maximum of 13.5 meters still cannot accommodate this missile. However, what we are building is a double-hulled submarine. !

   Outside the 13.5-meter-diameter pressure-resistant shell, there must be a layer of non-pressure-resistant shell, so that the diameter should exceed 14 meters, and may even exceed 15 meters.

   In this way, the Julang-2 missile does not need to be exposed to the outside.

   Even, in the future, after the Julang-3 missile with a range of 12,000 kilometers is developed, it can be stuffed into the stomach of this strategic nuclear submarine with a little modification.

When thinking of this, Qin Tao also became excited: "Dad, if we want to design a brand new ballistic missile nuclear submarine, we need to communicate with the research and development personnel of the Julang-2 missile. Only the relevant parameters of the missile are needed, which is convenient for our submarine design. Although the 095 has not been built yet, we can design a brand new strategic nuclear submarine now."

  Wu Shengli nodded: "Well, it's time for a joint exchange. After I go back, I will arrange it for you."

Qin Tao looked at Mr. Peng, Mr. Huang and others present, and thought: "Mr. Peng, Mr. Huang, you have all dedicated your life to the nuclear submarine technology of the motherland. Now you have reached the age of sixty, but you are still still there." I am working on the front line, and I have a heartfelt request."

   "Boss Qin, if you have something to say, just say it." Mr. Peng and Mr. Huang seemed to have guessed something, their eyes were full of excitement.

   "I would like to invite two of you to join our third design department of Mingzhou Group as special technical advisors."

   "Invite us? Doesn't your third design office of Mingzhou Group also have experienced designers? That Kwasha is very powerful, and his ability is not inferior to ours. Besides, we are also old." Peng Lao said.

"Both of you, let me just say it clearly. It is the first time for our Mingzhou Group to set foot in the construction of nuclear submarines. We need to contact many domestic factories, especially a large part of which we are not familiar with before. Therefore, I invite you two to be in charge As a technical consultant, I actually intend to use the names of the two." Qin Tao said very sincerely.

  However, the two of them didn't buy it.

"Mr. Qin, now you still need others to stand behind you? Your Mingzhou Group is a resounding signboard. It is their blessing that you cooperate with others. They are eager to come and wish for it. How can you hold the old qualifications?" Attitude, creating obstacles for you?" Mr. Peng said.

Mr. Huang also had a smile on his face: "Mr. Qin, you are afraid that you will embarrass us both by telling your real purpose. What's the matter? We can understand your painstaking efforts. You saw that we were both involved in the nuclear submarine business. I've been busy all my life, and now I can't continue to be the leader, but I still want to be in this industry. You Mingzhou Group is not a state-owned enterprise, and it's not convenient for us to go, so you specially invite us to be consultants. We don't have to do anything, just leave every day Just go and have a look, that's enough, isn't it?"

"Yes, Mr. Qin, even if you don't invite us, we will have the cheek to go there." Peng Lao said: "We see that your Mingzhou Group is going to build the most advanced nuclear submarine, how can we not come over and join us?" Lively? Mr. Qin, you are overthinking, Mr. Wu, you have a good son-in-law!"

  Wu Shengli smiled all over his face: "Of course, then it's settled. When the construction starts in 095 next year, you will go to Mingzhou to stay!"

  Qin Tao originally thought it was just a proposal, and the follow-up might take a long time, but he didn't expect that on the third day after returning from inspecting the 093 submarine, he would be called to attend the aerospace system meeting!

  The most excited person is of course Kvasha. As the designer of nuclear submarines, he is very much looking forward to the realization of his nuclear submarine design drawings. He has been waiting and perfecting.

   Now, the construction of the 095 submarine has finally been put on the agenda, and they will also design a brand new strategic missile nuclear submarine!

  The first-generation strategic missile nuclear submarines are basically improved attack nuclear submarines.

  For example, the Washington-class missile nuclear submarine of the United States is designed on the basis of the "Bonito" class attack nuclear submarine. Lao Maozi’s Type 658 missile nuclear submarine was also developed from the Type 627 attack nuclear submarine and the Type 629 submarine. As for China, it is even more so. The Type 092 missile nuclear submarine was developed on the basis of the Type 091, and the Type 094 was developed on the basis of the Type 093. Almost all of them are inherited.

   Now, the 095 nuclear submarine is about to start construction, and it is natural to design a ballistic missile nuclear submarine based on it.

  However, this is a ballistic missile nuclear submarine after all, and it is a powerful weapon of a great power. Therefore, Kvasha also attaches great importance to this project, which means that he is finally recognized by the East!

"Kvasha, our main task this time was to listen to the newly developed ballistic missile data and prepare for the development of our nuclear submarine. The confidentiality of ballistic missiles is very high. For us, don't ask if you shouldn't ask." Ask." Qin Tao said to Kwasha as he walked.

   "Yes, I know." Kwasha nodded: "We mainly listen to various data, and then improve our submarine design, Mr. Qin, can we really design a nuclear submarine with a displacement of 20,000 tons?"

   No submarine designer can resist the temptation to design a bigger nuclear submarine!

  Typhoon class has become a thing of the past, and it will not appear in the future. For the East, a nuclear submarine with a displacement of 20,000 tons is already a giant.

   "It doesn't have to be 20,000 tons, it might be 16,000, 17,000. After all, we need to consider the data of comprehensive ballistic missiles." Qin Tao said.

  Kwasha nodded, and the two of them had arrived at the door of the meeting room. When they opened the door, a whole new world appeared inside.

   This is a conference room in the shape of an oval table, surrounded by a circle of more than a dozen people, including Mr. Peng and Mr. Huang. There are also a few people in military uniforms, who must be representatives of the military.

  When they saw Qin Tao coming in, everyone greeted him with smiles, and Mr. Peng said, "Mr. Qin, you are here, and I will wait for you."

   "Didn't you say that the meeting will be held at nine o'clock? Don't you have a meeting first?"

Everyone's expressions were a little awkward, but fortunately Qin Tao didn't pursue it further, but changed the subject: "Come on, let me introduce, the person next to me is Mr. Kwasha, the chief designer of the third design department of our Mingzhou Group, he He has profound attainments in the design of nuclear submarines, and he will be our chief designer for the brand new strategic nuclear submarine to be built this time."

"That's right, we have met Mr. Kwasha a long time ago. When we bid, the 095 submarine we designed was very good." Mr. Huang said, "Next, I would like to ask you for your valuable opinions. The chief designer of -2, Lao Yang, will give you a brief introduction."

  Old Yang coughed and began to introduce: "First, let me introduce our Julang-2 missile project."

  If you only talk about a few data, it will be over in a few minutes. Since there is a meeting, there must be a delay, so Mr. Yang started from the beginning.

The time can be traced back to 1976. At that time, the superior had already approved the development of the Julang-2 missile. You must know that at that time, even the Julang-1 had not yet been produced. It can be seen that the superiors knew that the Julang-1 was only a solution to the No problem.

"It's just that at that time, I was always struggling with the indicators of submarine-launched medium-range missiles and submarine-launched long-range missiles. In this way, the plan was demonstrated in 1986. Our Aerospace First Academy, Second Academy, and Fourth Academy jointly demonstrated the overall plan for solid long-range strategic missiles. The development of land-based long-range missiles and sea-based long-range missiles follows the guiding ideology of land-based long-range missiles, land-sea considerations, and common technologies. The missiles have a diameter of 2 meters, use three-stage solid rocket motors, and have a maximum range of 8,000 kilometers."

   "So, our Julang-2 missile and Dongfeng-31 project are actually parallel?" Qin Tao asked curiously.

Qin Tao was a shipbuilder in his previous life, but his main business was to build aircraft carriers. He doesn’t know much about the navy’s nuclear submarines. He only knows that the 094 nuclear submarine is equipped with Julang-2 missiles, and the 096 nuclear submarine is equipped with Julang-3 missiles. As for these missiles What is the specific performance, what is the origin, do not know.

"That's right, these two projects are in parallel. It is no problem to say that the huge waves go ashore at the beginning, but if you want to say that the east wind goes to the sea, that is a layman's word." Yang Lao continued: "These two missiles are under development. At that time, large diameter, basic type, and serialization were required. Therefore, unlike the 1.4-meter diameter of the Julang-1 missile, our Julang-2 was designed with a 2-meter-diameter solid rocket motor. "

  The larger the diameter of the missile, the more fuel it stores, and the longer the range, but it also means that the technology is more difficult. Therefore, it is a huge leap from 1.4 meters in diameter to 2 meters in diameter.

   "If the diameter of our submarine is enlarged to more than ten meters, there is no problem in placing two bombs horizontally." Kwasha began to deduce based on these data: "If the diameter is enlarged to thirteen meters, it will be more generous."

"Yes, a missile with this diameter requires a larger nuclear submarine, and our current 092 nuclear submarine will definitely not fit in it." Yang Lao continued to introduce: "I will continue to talk about the technology of this missile. The diameter ranges from 1.4 meters to 2 meters is not easy, and it will inevitably face a series of problems. Therefore, in 1979, our second-generation large solid engine began to be pre-researched. In 1983, the two-meter-diameter large solid The engines FG-06 and FG-07 have completed the ground thermal test successively and achieved complete success. This has laid a solid technical foundation for the establishment of our second-generation solid strategic missile project. After demonstration, we initially decided that the first stage and The second stage uses a two-meter diameter engine, and the second stage uses a basic design of a one-meter diameter engine."

  For any missile, it must have an engine before it can continue to be developed. Without an engine, it is impossible to fly.

   At this moment, Qin Tao suddenly thought of something after hearing Mr. Yang's introduction: "Mr. Yang, can these solid rocket motor technologies be used for civilian use?"

  The technical coordination meeting, which was so good, suddenly changed its direction? Everyone became curious, what Huang Lao thought of: "Boss Qin, are you planning to ask for technology for Starship Company?"

  The emergence of the Starship Company has already put a lot of pressure on the domestic aerospace sector. Now, Qin Tao is still not satisfied, and actually requires solid rocket technology? Is this still a way for us to live? Everyone's eyes are complicated.

Qin Tao shook his head: "Of course not. The ultimate goal of our starship company is to fly to Mars. It is impossible to rely on solid rockets. However, in modern aerospace operations, the technology of solid rockets is very important. It gives us The ability to launch quickly."

The original ballistic missiles were all liquid. After all, this technology is more mature. However, liquid ballistic missiles need to be refueled before launching, and the movement is slow, so they cannot be launched quickly. Therefore, with the development of technology, ballistic missile technology Then I started to turn to solid missiles, which have solid fuel installed in advance, and can be propped up and launched at any time when needed.

  Launching carrier rockets generally has no timeliness requirements, so liquid rockets are used. However, various aerospace powers have also begun to develop solid rockets. Rapid launch, even if network repair is its most important role.

   Especially in times of war, a large number of reconnaissance satellites need to be launched as soon as possible, and solid rockets are obviously faster. Civilian small satellites are also easy to launch with solid rockets, and the cost is lower.

  At this time, hearing what Qin Tao said, everyone started to think.

   "Since our aerospace agency has advanced solid rocket technology, it can also be used for civilian use. In this way, in addition to developing military industry, you can also make money in the field of civilian space launch."

   "That's right, Mr. Qin said it very well, and we will conduct a program demonstration next." Yang Gong said: "We can't just rely on the appropriation from the superior, we also have to create economic benefits."

  Everyone nodded.

   "Sorry, I seem to have changed the subject, let's continue."

"Well, Mr. Qin, I will continue to report that after we use the three-stage rocket, the length of the missile has reached more than thirteen meters, which is much larger than our previous Julang-1. Therefore, its water-exiting technology is more complicated. To make it better take into account the different needs of the underwater and the atmosphere, we plan to use double head fairings and underwater tail fairings, so that the missile will become an ideal drop shape underwater. After exiting the water, throw away the water fairing, it becomes the best conical fairing for the missile."

  Hearing this, Kwasha frowned.

   "Kwasha, what's the matter?" Qin Tao looked curiously at this old Maozi's most famous submarine designer.

   "Qin, when you came here, you said that we can just listen to it, but now I really want to remind you a few words." Kvasha said.

   It turned out to be for this!

  Qin Tao nodded with a smile: "Of course there is no problem, you can say what you want to say. We are democratic, and you can raise your opinions if you have any opinions."

Kwasha was finally relieved: "Everyone, the biggest flaw of this design method is that the technology is too complicated. Our R-39 submarine-launched ballistic missile has used this technology, but because it is too complicated, it often appears Fault."

  (end of this chapter)