Chapter 340 Oceanic Black Hole

the next day.

 “Is this old man coming yet?”

"Whatever, if they don't come, we should go back." Qin Tao said, "We are not used to this problem of theirs."

"Submarines launch cruise missiles from torpedo tubes. This technology is really good." Deng Rui said: "If we can obtain Lao Maozi's Club missiles, it will be of great significance to our submarines!"

In the past, submarines could only use torpedoes as weapons and occasionally deploy mines. In this way, the attack distance would not exceed fifty kilometers. But what if the submarine had submarine-launched missiles?

That can attack enemies a hundred kilometers or even hundreds of kilometers away!

Although Lao Maozi's cruise missile submarine has been able to do this for a long time, only Lao Maozi has this strength. No other country will develop weapons like cruise missile submarines that can be launched from torpedo tubes. The meaning is Quite significant.

Although the country is currently studying how to launch the YJ-81 missile through a torpedo tube, that is just adding a package to the outside of the missile, and this missile can only fly dozens of kilometers, which is similar to the attack capability of a torpedo. .

"Yes, if it can be introduced, it will of course be of great benefit to us. However, this missile has just been developed by Lao Maozi, and it may not be sold to us. If we can't reach an agreement this time, we will wait. , when the next time Lao Maozi comes to us and sells door to door, then we have to take out the bottom of the box."

 Qin Tao doesn’t care.

The purpose of coming this time has been achieved. The so-called 636 submarine is just an addition. If it can be purchased, it will be better. If it cannot be purchased, we will deal with it later.

 Qin Tao is not in a hurry, the other party will definitely be anxious. Think about what later generations said, the order for Kilo-class submarines saved half of the people of St. Petersburg. Lao Maozi is just waiting for the order from the East to buy rice and cook it.

People from the shipyard and design bureau came to see them off. Their team will set off in two or three days and embark on the road to the East. As for the advance payment, Mingzhou Group has already paid it to their account. Everyone is very happy. Excited, looking forward to making a lot of money and living a good life.

In this way, the group of people went to the train station. They needed to take a train to Moscow first, and then take a flight back from Moscow. After all, not every city in Lao Maozi has passenger planes flying to China.

"We are surrounded by Lao Maozi's intelligence officers monitoring us." Xu Zhengyang quietly informed everyone of the news.

“They are here to observe our reaction and see if we really want to leave.” Qin Tao said: “We will act happy and let them be disappointed to the end.”

Zheng Ming nodded.

“After we arrive in Moscow, there are still a few hours before the plane takes off.” Zheng Ming said: “Do you want to go shopping in downtown Moscow?”

"Moscow is the capital of Lao Maozi after all, and the scenery there is pretty good." Qin Tao said with a smile: "You can go for a walk on the nearby Moskva River. Although the river is frozen now, the scenery is not bad. Time is running out. If it's suitable, you can go to the Grand Theater to watch a movie. Oh, and you can also have a beautiful encounter with Lao Maozi's woman."

Everyone couldn't help but laugh. Mr. Qin is still less than thirty years old, so when he talks, he is always so humorous. Isn't that the kind of woman he is looking for when it comes to beautiful encounters?

Everyone just listen and forget it, but you can't do this, it's embarrassing.

The train started banging loudly and arrived at the Moscow station. Everyone got off the train with their luggage, then took a few taxis and toured the city of Moscow. They arrived at the airport just before the plane took off.

“Dear passengers, please note that the flight from Moscow to the Chinese capital has been delayed due to bad weather. Please wait patiently.”

When he heard the news, Qin Tao felt confident. Lao Maozi must still be discussing urgently at this time!

If it is a passenger plane from other countries, it will definitely not dare to take off once it encounters bad weather. However, the title of fighting nation is not for nothing. Lao Maozi’s flight does not dare to take off and land in any bad weather. It is raining heavily at the target airport. , thunder and lightning, flights from other countries have to hover in the sky and wait, or even divert to other airports, only Lao Maozi dares to fly down and land.

 Visibility reduced? What's so scary? The captain of Lao Maozi once took the initiative to pull up the curtains and make a blind landing. It was a thrilling experience.

Now, the sky in Moscow is bright. If there is anything that cannot take off, the old man must be urgently discussing it.

 This time it’s good, everyone can sit firmly on the Diaoyutai.

 “When we get bored, let’s play poker?”

  Qin Tao started to make suggestions.

Poker is a special hobby of the Chinese people. This kind of behavior makes foreigners very confused. They are obviously going on a trip, but they end up playing poker at the destination for a whole day!

Now, in the open space of the airport, several people sat on their suitcases and started playing poker.

“Old Zheng, you lost, put a note on it!” Qin Tao picked up a piece of paper, stuck out his tongue, licked it, and then stuck it on Zheng Ming’s head.

“Haha, Mr. Qin, you lost!” Zheng Ming followed suit and took out a note and stuck it on Qin Tao’s head.

When Grishen arrived, what he saw was such a strange scene. Four people playing poker, each of them had densely packed notes on their foreheads, which looked like wigs, and their faces were all covered with paper. Can't see it anymore.

"Who is Mr. Qin? Who is Mr. Zheng?" Grishen could only shout once.

 Several people raised their heads and opened the papers in front of them.

“Mr. Grishen, are you here to see us off? It’s strange that your airline, Da Mao, is actually afraid of bad weather. When can this plane take off?”

Grishen's face looked a little embarrassed: "Mr. Qin, can we talk again?"

 “Have you agreed to our conditions?”

 “Shall we find a room at the airport?”

There are many rooms in the airport. For example, when clearing customs, if someone is found carrying special things, they will be called into these rooms for questioning. Now, one of the largest rooms has become a temporary reception room.

At this time, a group of people sat down in the room. Qin Tao and the others had torn off the papers on their heads and were waiting for Grishen to speak.

"We have carefully considered your request," Grishin said. "With a price of US$150 million per vessel, we can only equip you with one hundred TEST-71MKE wire-guided torpedoes. As for the 3M-54E missile , you need to pay additional purchase, one million US dollars for each missile."

While speaking, Grishen looked at Qin Tao nervously. Can the other party agree to such conditions? The other party’s attitude has always been very firm!

If the other party leaves, St. Petersburg will definitely be disappointed.

“3M-54E? What’s the range?” Qin Tao asked.

“The range is two hundred and twenty kilometers.” Grishin quickly introduced.

“In other words, you have reduced the range of this submarine-launched missile by more than half?”

 How was the data leaked? Grishen was a little annoyed.

When Qin Tao proposed these two weapons, Grishen was a little surprised, because these weapons were for their own use and were the latest developments. Some **** guy must have taken the money and then used these weapons The data was sold to Qin Tao!

There is nothing to say about that torpedo, just sell it, but this missile has really caused huge controversy. St. Petersburg really wants to do this business, and the related missile production plants also hope to make money by selling the missile.

 So, the navy finally compromised. It can be sold, but the weapons will be reduced!

The model they use for their own use has a range of more than 500 kilometers, but the range sold to China has been reduced to 220 kilometers. In this way, the several parties have reached a consensus, and he hastily informed Qin Tao and others.

But, can they agree?

Qin Tao did not speak, and no one else spoke. The conference room fell into silence.

"Qin, I know that my attitude is not good. If it is because of my words, I apologize to you. We have made concessions and hope you will make concessions too, so that we can complete this business."

Hearing Grishen say this, Qin Tao smiled: "Mr. Grishen, they all hate you, because your existence has made it impossible to do a lot of arms business. In their eyes, you are not a good person at all." I don’t want them to do business.”

"Of course not." Grishen shook his head: "I did that just to sell the weapons at a good price. This is very important to us, but I also know that it is also important to sell the weapons. We Now, arms exports to China are absolutely indispensable. Therefore, during the last Su-27 negotiation, even after arriving at the airport, we finally unloaded the luggage."

At this moment, Grishin finally confided in his heart.

Even if there is no Damao Arms Export Corporation, Grishin played the role of a black face in the negotiations for the first batch of Su-27s. From then on, he played the role of a black face again and again, vigorously raising the price.

 He is not a troublemaker, he is not trying to disturb these businesses, he is just trying to get a better price for the weapons.

 In his heart, he has long understood that the current Mao cannot do without weapons procurement from the East. Their huge arms system needs a market, and the East is the most suitable!

"Mr. Grishen, you are the most honest now." Qin Tao sighed with emotion: "We Orientals also value sincerity the most. Your sincerity moved me, so the plan you proposed, we Accepted."

Accepted?

Grishen let out a long breath.

Zheng Ming and Dengrui Dengrui also secretly breathed a sigh of relief. Everyone is happy with this ending!

"It's just that because we don't have more budget, we can only purchase ten of these 3M-54E missiles now, five of the anti-ship type and five of the ground attack type. We will only purchase more in the future. Lots of missiles.”

"Of course it's no problem." Grishen agreed immediately. Ten missiles are worth ten million US dollars. With this money, the missile production factory and missile design unit can also breathe a sigh of relief. Don't worry. Have a good life.

Of course he didn’t know that the next batch that Qin Tao mentioned was gone. With these ten missiles, the relevant units of the motherland could learn from the technology of this missile.

"It's just that your information is wrong." Grishen continued: "The 3M54E model is only for anti-ship missiles. The corresponding ground attack version is numbered 3M14E. However, since you want it, we can also provide it. , the range is still two hundred and twenty kilometers."

The business was concluded in this way, and there were too many twists and turns. Grishen was also very emotional. From being tough at the beginning, to compromising in the middle, to being frank at the end, frankness finally worked.

No one took their luggage back. At the airport, a special plane took them directly to St. Petersburg.

There is already a large group of people waiting for them here.

 When we arrived, it was already evening. The day had been too tiring. We stayed at the guest house of Ruby Design Bureau for one night. The contact between the two parties officially began in the morning of the next day.

“Welcome everyone.” Yuri Nikolayevich Kormlison, the head of the Ruby Design Bureau, said with a smile on his face: “We have been waiting for you here for a long time.”

“Yes, we also want to come here as soon as possible.” Qin Tao said with a smile: “See our Warsaw women as soon as possible.”

"Women of Warsaw?" Cole Millison said with some surprise: "Our submarine 636 is codenamed Song of Warsaw!"

What?

 Qin Tao is a little embarrassed. Is this code name wrong?

Lao Maozi's various weapons also have their own code names. For example, the 877 submarine, their code name is Flounder. Therefore, Lao Maozi often talks about "flounder", and he will definitely not say "such and such" Kilo class. , the latter is the code name of NATO.

The Type 636 submarine is also a Kilo class. NATO thinks so, it is just a modification of the Kilo class. However, Lao Maozi already thinks that this is a brand new submarine, so in addition to the number 636, Lao Maozi also gave it the code name Song of Warsaw.

 It’s just that I don’t know how it spread, but when it came to Qin Tao, she became a Warsaw woman.

“However, the title of Warsaw woman is not bad.” Cole Millison continued: “Our submarine is like an underwater mermaid.”

　　　孺子凯教, it seems that this must be a relatively friendly meeting.

 Everyone entered the conference room in an intimate and friendly atmosphere.

“First of all, let me introduce to you the overall design of our 636 submarine so that you can have a deeper understanding of this submarine. It is also my most proud work.” Cole Millison said, opening the slide projector.

Cole Millison, who was born in 1932, grew up in a shipbuilding family, so he was very interested in shipbuilding, especially submarines. After graduating from college in 1956, he entered the famous Ruby Design Bureau, starting from ordinary Working his way up from engineer to chief designer, he successively participated in the development of four generations of Soviet submarines. Especially the development of the 877 submarine, he was already the chief designer of this project at the time.

Therefore, after Bazarov died, as Mao's meritorious designer, he was promoted to be the general manager of the Ruby Design Bureau. The first thing he did when he took office was to prepare for the arrival of Eastern guests and promote the latest 636 submarine. go out!

Thinking of his taking office, he felt very emotional. If Bazarov could be more patient and less desperate, he would be able to wait for the bright future.

The Chinese have come to place orders. Their design bureau and shipyard have been saved. Half of the people in St. Petersburg are looking forward to it.

　　Bazarov died before dawn!

 The internal structure diagram is very detailed! Deng Rui looked at the design drawing carefully, trying to remember the entire drawing in his mind.

"You have already seen the 877 submarine. From the appearance, it is difficult to distinguish the two submarines. In fact, our 636 submarine is only 1.2 meters longer than the 877 submarine, and its displacement has increased to more than 3,100 tons. In the added part, the shell has been lengthened by 1.2 meters and the hull has grown to 73.8 meters. The added part is mainly used to install more sophisticated and complete turbine sound insulation and vibration reduction base and bulkhead sound insulation measures. After some improvements, our 636 model The noise of the submarine sailing at full speed has been reduced to about 118 decibels."

　　When hearing this sentence, everyone was shocked: "Is it only this low?"

 Is it low?

The national noise standard is 55 decibels. The noise of 100 decibels is the sound of an electric drill drilling into a wall or an electric saw cutting wood. 120 decibels is even more terrifying. In an environment with this kind of sound, people can't hear it for a few minutes. can cause deafness.

 The decibel of a submarine is 118, but it is still said to be low?

 There are many technical issues in this.

When the submarine is sailing at low speed, the sound it emits will be very low. When it remains silent, it will be silent. As the speed increases, the noise will increase rapidly.

Secondly, these noises are not heard by sailors inside the submarine. In the entire submarine, only the noise in the engine room is slightly louder. After all, there is a diesel engine running inside. Of course, with the advancement of technology, the vibration of diesel engines is also reduced. If an advanced German diesel engine is started on the carpet, people in the next room can sleep quietly. As for nuclear submarines, the source of noise is the circulating water pump.

However, these noises are only part of the noise produced by submarines. The greater noise comes from the propellers. The propellers stir up the seawater, produce bubbles, make a swishing sound, and may even resonate within a certain speed range.

 This is the most terrifying killer for submarines. It has a nice name, called "Singing Sound". It is the unique identification feature of each submarine. The singing voice is also called the "voiceprint" and has high intelligence value.

Of course, it’s not just the propellers, but also the sound of water hitting the surface of the submarine, and these sounds are all propagated outward.

These are all technical problems, but sound is caused by vibration. When it propagates in seawater, it travels faster than in the air and attenuates faster. After all, vibrations propagating in the air are absolutely different from ship vibrations in seawater. Not an order of magnitude.

 Even if the Kilo class sails at its highest speed, it emits a noise of 118 decibels, which propagates in the ocean. Except for subtle low-frequency noise, nothing else can be heard dozens of kilometers away.

Of course, there is another most important reason, that is, the decibels in sea water are different from those in the air. If converted, the decibels in sea water are 52 lower than those in the air. Therefore, the decibels under water minus 52, is the equivalent volume in the air. (Thanks to book friend Xishan Qingqiang for his advice.)

Therefore, the noise of the Kilo-class submarine is 118 decibels. When converted to land, minus 52 is 66, which is not high anymore. It can be regarded as a black hole in the ocean. The noise of the Los Angeles-class submarine is 128 decibels, while the noise of the domestic 091 submarine It reached 170 decibels and was called a submarine tractor.

As for the movie, in order to avoid being discovered, even speaking in a low voice is not necessary at all. However, the knocking sound can be transmitted, so there is indeed a sound when a coin falls, but being able to tell which side is up is a stroke of genius. .

 Nowadays, the noise of 118 decibels is already very low.

 So, everyone was surprised when they heard this introduction.

“Yes, through our careful design, the noise has been reduced to the order of magnitude of the ocean background noise.” Cole Millison said proudly: “Now, let’s introduce its noise reduction technology first.”

 Their increased length is mainly used to reduce noise. For a submarine, this is very important and is directly related to its life and death.

  After all, for submarines, concealment is the first priority. Once discovered, the consequences are unpredictable.

 The slide of the power cabin was shown.

In order to reduce noise, the entire power cabin uses "floating raft vibration isolation and noise reduction technology", that is, multiple different machinery and equipment are installed on a common raft body or raft frame in a compact space, and are flexibly supported or Suspended from the hull structure. Since it is not rigidly connected, the transmission of vibration is greatly reduced.

In the past, the diesel engine drove the propeller directly through the transmission shaft, which would cause the vibration of the engine to be directly transmitted to the outside through the transmission shaft. This has long been abandoned and electric transmission technology is used.

"The power system is basically the same as that of the 877, but in order to increase the speed, we upgraded the original two 1,000-kilowatt diesel engines to two 1,500-kilowatt diesel engines, PG-142 low-speed cruise generator sets and two The emergency diesel generator set remains unchanged. As for the battery, we have upgraded the latest model 476, with a capacity that is 1.5 times the original and a lifespan that has been increased from two years to five years."

Although Lao Maozi’s submarine has good performance, there are also many pitfalls. Submarines mainly rely on batteries for underwater navigation. The capacity drops drastically after two years, and the batteries need to be replaced with new ones, just like the batteries of electric cars.

  The new battery can last for five years and its lifespan has been increased by 2.5 times. This is quite an improvement.

 “Yeah, not bad.” Everyone nodded.

“Let’s introduce its command and control system again. By the way, in order to guide the cruise missile, we still need to update it, so the delivery time to you may be extended.”

“We can afford to wait.” Qin Tao was very generous.

Qin Tao certainly knows that the basic type of 636 cannot launch 3M-54 cruise missiles. After all, this kind of submarine was designed in the late 1980s, and the missile was only successfully test-fired this year. Therefore, there is no Matching.

The real supporting equipment will not be available until the 636M, which is the improved version. The old man was forced into a hurry and risked his life in order to sell weapons to support St. Petersburg!

This is all thanks to Grishen. Although this guy is difficult to communicate with, he has an eager heart to sell weapons!

 (End of this chapter)