Chapter 628 Looks like the God of the North Wind

  The density of water is 800 times that of air, so the shapes required for sailing in water and flying in air are completely different.

  The most suitable shape in water is a drop shape, while the most suitable shape in air is a conical shape. An example of the former is a submarine, an example of the latter is a bullet.

  The two types are irreconcilable, which poses a great challenge to submarine-launched ballistic missiles.

  The biggest advantage of a submarine-launched ballistic missile lies in its concealment. Therefore, it must be launched from underwater, and then enter the atmosphere to fly after the missile leaves the water surface. In this way, the submarine-launched ballistic missile needs to be transformed.

   Julang-2 adopts a double fairing design, using the drop shape with the best fluid performance in the water, and after leaving the water surface, throw away the underwater fairing to reveal the conical fairing!

  The drop-shaped fairing has not only the front, but also the rear, so that the performance in the water is the best, but at the same time, the design is too complicated!

  Da Mao also designed it, but it turned out that the design was too complicated.

Even the technologically advanced West has not made it so complicated. For example, the American "Trident 2-D5" and the French "M51" submarine-launched intercontinental ballistic missile. They optimize the submarine-launched missile according to the underwater shape. The process of getting out of the water is very smooth.

  However, the drop-shaped fairing has great resistance to flying in the air. How to solve this problem? The answer is the drag reduction bar!

The shape of this missile is like a swordfish. There is a long drag reduction rod in the front. This drag reduction rod will not affect the navigation in the water. When flying in the air, it can generate shock waves in front of the missile. Reduce the drag of the rear projectile.

  However, the effect of the drag reduction rod is definitely not as good as that of the conical fairing, and the drag reduction effect is only about 50%, which leads to a significant reduction in the range of the missile.

  Americans have advanced solid rocket motor technology, so even if the resistance is higher, the range of the missile can still be guaranteed, but the domestic ones can't do it!

At this time, upon hearing what Kwasha said, Old Yang nodded: "Yes, Mr. Kwasha is right, this design will make the system too complicated, but we have no other way, after all, our The goal of a ballistic missile with a range of 8,000 kilometers is rigid, and we must follow it. By the way, how did you solve this technical problem?"

  Since Da Mao's designer is here, of course we have to listen to the other party's opinion.

   "We use the underwater ignition method, relying on the power of the missile itself to get out of the water." Kwasha didn't hide it, and directly said this technology.

Domestic and Western mainstreams use the gas ejection method. The missile is ejected underwater until it flies above the water surface, and then the missile will be ignited. The old man is more direct, ignites in the launch tube, and flies out by himself. , No matter how much resistance there is underwater, let's just rush.

  This different design is also caused by the different missile designs of the two sides.

During the Cold War, Lao Maozi’s nuclear submarines were launched one after another. Although they also knew that solid missiles were very useful, they were still unable to figure out the related technology. Therefore, most of them used the technology of liquid missiles. The thrust of the engine is strong, and it is okay to ignite directly underwater. It was not until the typhoon-class nuclear submarine that Lao Maozi began to use solid missiles, which were specially designed for special use. Therefore, when the typhoon-class nuclear submarine was decommissioned, Lao Maozi suddenly found that the submarine-launched missiles he had were useless again!

   Of course there is a backup plan. During the Red Empire period, the Makeyev Design Bureau, the leading unit in the development of submarine-launched missiles, has been developing a solid-fuel submarine-launched missile named "Balker" since 1986. However, after several test shots, they failed again and again, and became the laughing stock of the Western media, so that Da Mao finally canceled the "Balke" development plan, and chose the program of the Moscow Institute of Thermal Technology through public bidding. This organization is the research and development unit of the famous Baiyang missile. It is said that it is very easy to develop sea-based missiles. However, this missile code-named "Bulava" is not much better. It often fails in test launches. The success of the cultivation is considered to have saved face for Da Mao.

  So, in the research and development of solid submarine-launched ballistic missiles, Lao Maozi's technology is not good, and he can't provide advice at all.

"It's strange to say that the old man has always used cold launches on the vertical launch missiles, but why did he use hot launches on the submarine launch missiles?" Qin Tao joked on the side, and he also found this very interesting up.

"It's not because the submarine-launched ballistic missile's water-exit technology is too difficult." Kwasha said: "It's not that the navy didn't know the benefits of solid missiles back then, but they failed to develop several models, and they could only develop liquid missiles. .”

  Everyone nodded. It would be beneficial for Kwasha, an old man, to join the meeting. He could provide them with some experience in the development of nuclear submarines, including the development of submarine-launched ballistic missiles.

  The technology of solid submarine-launched ballistic missiles is too difficult!

  Everyone has a deep understanding. Hearing what Kwasha said at this time, everyone frowned, and the conference room fell into a state of silence for a short time.

  Qin Tao is also thinking about how to balance underwater and air? The American way of drag-reducing rods cannot be used. Is there a better way?

  Water has a high density and high resistance, and the resistance in the air is much smaller. It would be great if the missile was the same under water as in the air!

  When thinking of this, Qin Tao suddenly thought of something: "Everyone, have you heard of supercavitation?"

The supercavitation technology was first used in torpedoes, and Da Mao made a positive result, and created a storm torpedo with an underwater speed of 200 knots. Its principle is actually very simple, that is, to create air bubbles in front of the torpedo, so that the torpedo can sail In the air, much faster than in the water.

  Hearing Qin Tao's words, everyone's eyes lit up, yes, why didn't they think about this technology? If an air bubble generating device is added to the front end of the missile so that the missile is surrounded by air when it exits the water, then the air resistance of the missile in the water can be greatly reduced!

   "Boss Qin, the plan you mentioned is very valuable, and we will seriously consider it." Elder Yang said, "Just in this way, the length of the missile may increase a little, and it may have to reach 14 meters."

  Qin Tao nodded: "We will design the nuclear submarine based on the length of 14 meters, and the specific indicators must be approved by the military. If we are willing to increase the budget and increase the displacement, we may cancel the turtle of the nuclear submarine."

  The pressure hull diameter of 13.5 meters is the largest, but building such a large pressure hull will inevitably mean an increase in displacement and a soaring construction cost. Therefore, overall consideration must be given to see if the Navy can afford it.

  If the navy feels that the displacement is too large, it doesn’t matter if it is lowered, it’s just adding a turtle back. Anyway, almost all missile nuclear submarines of other countries have turtle backs.

   "First, please ask the third design department of Mingzhou Group to design according to the plan that does not reveal the turtle's back, and then after the budget report is issued, the superior will decide." An officer present said.

   "Okay." Qin Tao nodded.

   "The detailed design still needs to be calculated in the future, but now, I can report the general parameters to the Navy." As the best submarine designer, Kwasha quickly calculated roughly.

   "The length is 170 meters and the width is 13.5 meters. Without a turtle back, it can carry 16 ballistic missiles. The water displacement is about 17,000 tons, and the underwater displacement is 24,000 tons."

   This parameter immediately shocked everyone.

  Guys knew that this submarine would be big, but they didn’t expect it to be so big!

   Now the only strategic missile nuclear submarine 092 in China, the length is only 120 meters, the width is more than ten meters, and the underwater displacement is only 8,000 tons. Compared with the big guy in Kvasha's mouth, it is definitely a child!

  Qin Tao was also surprised. He was surprised by another thing: the technical parameters of this submarine are almost exactly the same as Lao Maozi's 955 nuclear submarine! Is Kwasha planning to get the 955 nuclear submarine directly?

  The Type 955 strategic nuclear submarine is the famous God of the North Wind, the most advanced missile nuclear submarine of the later generations!

In fact, as early as the early 1980s, Lao Maozi began to conduct project demonstrations. They needed to develop a next-generation submarine to replace the Type 941 strategic nuclear submarine. However, when the Red Empire collapsed, this project also remained at the demonstration stage. In the 1990s, After the collapse of the Red Empire, Lao Maozi looked at the existing inventory on hand and decided to make a direct transformation.

There were two options at that time: one was to use the semi-finished products of the unbuilt Type 971 "Akula" class to transform, code-named Type 955 (A), and the other was to use the semi-finished products of the unbuilt Type 949 "Oscar" class , the project code is 955 (B) type.

After some analysis, Lao Maozi believed that the potential of the Akula class was greater, so he used it to transform it. The first few submarines of the Type 995 that were finally built were almost all spliced ​​together. For example, the first boat was 971U type "Akula II" class K-337 "Puma"; No. 2 boat is 971U type "Akura II" class K-333 "Bobcat"; No. 3 boat is said to be 971M type "Akula" III" and some parts of the decommissioned K-480 "Snow Leopard".

  Of course, these are just legends, and the outside world doesn't know what's going on at all, but the basic parameters are still certain.

Lao Maozi's nuclear submarine technology has been developed for decades, and it is almost completely mature when it reaches the Akula class. Even the Type 095 designed by Mingzhou Group is very similar to the Akula class in appearance, and the 955 The shape of the Akula class is also borrowed from the Akula class, and even the unfinished Akula class is directly used for the head and tail.

   Now, Qin Tao can understand Kwasha’s plan, but some of them are still very curious: “You said that the maximum width of our nuclear submarine is 13.5 meters?”

  After our plate rolling machine is built, the maximum diameter that can be rolled is 13.5 meters. The height is easy to say. It must be opened on the pressure shell to poke the missile in. However, the width must also be enlarged!

"Yes." Kwasha nodded: "Our hull height is higher, and the two sides behind the conning tower must be in a plane shape, so as to meet the requirements for carrying missiles, but in the horizontal direction, there is no need for too much space." Wider, this will increase our sailing resistance." Kwasha, the submarine designer, has already entered the working state.

  The increase in height is to meet the needs of launching missiles, and the submarine already has a conning tower, which would have been one section taller, but the width is no longer necessary.

   There is no turtle back, but behind the conning tower, it becomes a flat upper hull, which just accommodates the launch tube.

   What about the width? Kwasha still hasn't solved the width problem!

  Kwasha continued following his train of thought: "In this way, if we install two nuclear reactors, the maximum underwater speed of this submarine will definitely exceed 30 knots, and even reach more than 33 knots."

Da Mao's Borei God uses a 190 megawatt nuclear reactor, which allows the underwater speed of this submarine to reach 29 knots. Our own side uses two nuclear reactors with a total power of 300 megawatts, and the speed soars to 35 knots. possible!

"More importantly, due to the sufficient power reserve, we should be able to enable the submarine to achieve a silent sailing capability of 15 knots without turning on the primary circuit circulating water pump and only relying on the natural circulation of the nuclear reactor." Kwasha continued Talking about all kinds of data, several naval officers present were excitedly recording, if these data can be realized, that would be amazing, our own nuclear submarine will be ranked among the world's first-class level in one fell swoop!

   "Kwasha, why is the width 13.5 meters?" Qin Tao finally couldn't help it, and asked directly to Kwasha.

Kwasha was taken aback, and then he understood: "Well, of course it's because our largest diameter is 13.5 meters. By the way, I forgot to mention that our submarine will adopt a single- and double-hull hybrid structure. Bow and stern, we use a double-hull structure and a single-hull structure in the center."

  Qin Tao nodded, he proposed this single-shell and double-hull mixture by himself, but he didn't expect to forget it here!

  The double-hull reserve buoyancy is large, but it is bloated and the internal space is small. The single-hull is just the opposite. Therefore, the combination of single-hull and double-hull structures has become a trend led by Mingzhou Group.

   On diesel-electric subs, they designed it that way, and nuclear subs are no exception.

This time, double shells are used at the front and rear. Of course, the front is to deal with possible collisions. The double shells are stronger, and the rear is for better mute performance. The center uses a single shell, and the internal space will be more abundant. The projected area of ​​the submarine.

   This Kwasha is really powerful. He is an old designer of nuclear submarine development!

  Even Huang Lao and Peng Lao nodded frequently there, very satisfied with Kwasha's design.

   "In the design stage, we can also help out." Huang Lao said, "It's a great honor to have such a strategic weapon appear in our hands."

  Qin Tao nodded: "Of course that would be the best, everyone just come with us."

  It was agreed last time that during the research and development of nuclear submarines, Mr. Huang and Mr. Peng are going to be consultants, and they happened to go together this time.

Even if this meeting is almost over now, Kwasha seems to have no plans to leave. He looked at everyone: "Everyone, I don't know how the development of cruise missiles by our domestic agencies is going? I am Say, a cruise missile like the Tomahawk?"

  Some of the people present are from aerospace systems, and some are equipped by the Navy. It should be the best to ask them about these things.

  Kwasha is engaged in submarines. Apart from submarines, I don’t know about other projects.

Hearing Kwasha's words, the people present were a little curious. They didn't know what the purpose of Kwasha's question was, but Qin Tao quickly realized it. It's getting more and more flexible!

  The strategic nuclear submarine bears the heavy responsibility of the second nuclear counterattack. This kind of weapon is usually not used. Once it is used, it will be the end of the world. Strategic deterrents are best never put into battle.

  In this case, isn’t this weapon a waste?

  With the end of the Cold War, the Americans felt that the Ohio-class nuclear submarines they had were redundant, so they wanted to use them for other things.

  What should I do?

The Americans thought of cruise missiles, so they converted the first four "Ohios" that could only carry "Trident I" from strategic missile nuclear submarines into cruise missile nuclear submarines. Lao Maozi also has cruise missile nuclear submarines, but they are only used to launch anti-aircraft missiles. Ship missiles are different from the ground attack cruise missiles used by the Ohio class.

  The original Ohio class has 24 MK46 launchers, these launchers remain unchanged, of which 22 are changed to cruise missile launchers, and 2 are changed to special personnel delivery compartments.

Since the diameter of the "Trident I" submarine-launched ballistic missile is 1.8 meters, and the diameter of the BGM-109 "Tomahawk" cruise missile is only 0.53 meters, seven plum blossoms can be placed in the original circle with a diameter of 1.8 meters. A circle with a diameter of 0.53 meters is arranged in the same shape, that is to say, it becomes a method of seven bombs in one pit. An Ohio-class nuclear submarine can carry 154 Tomahawk cruise missiles, becoming a professional ground attack submarine.

This seems to have lost a group of strategic nuclear counterattack forces, but it has greatly increased the ability to attack the ground. In fact, the Tomahawk can also be equipped with nuclear warheads when needed, and its flight is more concealed, serving as the first wave of sub-nuclear weapons. Strike force is also possible. After all, cruise missiles fly slowly, but they also fly far. Similar to the Tomahawk, they can fly 2,500 kilometers, which is farther than the range of Julang-1.

   "Everyone, our idea is to make calculations based on domestically produced cruise missiles to see how to choose a more suitable size for the launching tube. After that, we can modify the cruise missiles at any time." Qin Tao explained to everyone.

   It was only then that everyone came to their senses.

"We are currently developing cruise missiles similar to the Tomahawk class. The biggest difficulty is the low-thrust aviation turbofan engine. After the relevant technologies are overcome, we will have similar cruise missiles." A leader of the First Institute said. Said: "Don't worry now, Mr. Qin, if you have a way, would you like to get us some samples from abroad? It would be great if you can have a tomahawk."

  Aero-engine difficulties have always existed. At present, the domestic high-thrust turbofan 10 has not yet been finalized, and the low-thrust aviation turbofan engine is also blank. Therefore, domestically produced cruise missiles still have a long way to go.

Qin Tao smiled wryly and shook his head: "It's hard, if the old man has it, it's okay to say that the advanced Tomahawk cruise missiles are American products! Unless the Americans use them in war, let's find a few unexploded missiles and get them back for research. More or less."

  In the war in 1991, Tomahawk missiles also appeared on the stage of the war. This kind of missile technology was advanced, but Qin Tao hadn't developed it at that time, so he couldn't go to the local area to collect junk. Now he has no choice but to do so.

   Next, we can only wait for 99 years?

  Kwasha didn't say much either. He had already obtained too much useful information from this meeting, and he needed to digest and absorb it for a while.

  The meeting was over, and Kwasha went back with a mission. He was accompanied by Mr. Peng and Mr. Huang. Qin Tao hadn’t left yet. Now that he was here, of course he had to go and see his father-in-law.

  The old man didn’t show up this time. On the one hand, he was busy with work, and on the other hand, he also wanted to avoid suspicion. After all, the strategic nuclear submarine didn’t seem to have much bidding, so it was directly handed over to the Mingzhou Group.

   No way, only Mingzhou Group has the most advanced design! However, with Huang Lao, Peng Lao and others in the past, it can be regarded as a magic needle. I have to say that Qin Tao is still very smart and knows how to coordinate these things.

  Qin Tao returned home and teased Qin Haiyang a bit. The child is getting older and his habits have changed. He no longer pinches Qin Tao's face.

  Qin Tao chatted with his mother-in-law for a while, mainly about the child's next school. At night, when Wu Shengli came back, Weng and his son-in-law started drinking again.

"The military exercise project is almost coordinated, and it will officially start in about a month. This year's exercise area is on Damao's side. When we come to our place next year, it will be fixed in the future." Wu Shengli said: "In the future, we will often Conduct joint military exercises with navies of other countries, this will also show our existence and train our team..."

  Qin Tao nodded: "That's right, we will be able to conduct military exercises with Laoba and other countries in the future, and we have to go out, so that we can better sell export-oriented warships."

   "Yes, the subjects of this exercise include search and rescue, so you Mingzhou Group will also participate."

  We have a share?

have what? Qin Tao is very curious, this is a matter of the navy!

   "Didn't you build a deep-sea lifeboat? It's the Jiaolong, which happened to be brought there this time." Wu Shengli said.

  Since it was arranged by the old man, Qin Tao has nothing to say.

   "By the way, go there if you have time. After all, you and Nicholas are good friends. If there is any communication problem, it is better for you to mediate."

  Qin Tao nodded.

  The two talked for a long time, but the topic still didn't involve the missile nuclear submarine, as if the two deliberately avoided the topic. Qin Tao was thinking about how to speak, when the door suddenly opened.

   "Leader Wu, an emergency has occurred internationally, and the superior called a meeting of all the leaders."

   "Emergency?"

   "Well, Mr. Qin can turn on the TV, and all the TV stations in the world are reporting urgently."

  Qin Tao looked curiously at the TV that was turned on. When he got to the news channel, he saw...a burning building.

   "**airline** flight..." The narrator spoke quickly, obviously surprised and nervous.

  (end of this chapter)