Chapter 340 Oceanic Black Hole

the next day.

   "Is this old man coming yet?"

   "Never mind him, if they don't come, we should go back." Qin Tao said, "We're not used to their problem."

   "The submarine launches cruise missiles from the torpedo tubes. This technology is really good." Deng Rui said, "If we can get the old 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 deployed mines. In this way, the attack distance would not exceed 50 kilometers, but what if the submarine had submarine-launched missiles?

   Then it can attack enemies a hundred kilometers away, or even hundreds of kilometers away!

Although Lao Maozi's cruise missile submarine has long been able to do this, but only Lao Maozi has this kind of strength, other countries will not develop such weapons as cruise missile submarines, which can be launched from torpedo tubes, which means pretty big.

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

"Yes, if we can introduce it, it will of course be of great benefit to us. However, this kind of missile is just developed by Lao Maozi, so it may not be sold to us. If we can't reach an agreement this time, we will wait. , When the old man comes to us next time to sell, then we have to take them out of the bottom of the box."

  Qin Tao doesn't care.

  The purpose of this visit has been achieved. The so-called 636 submarine is just an addition. It is better to purchase it. If it cannot be purchased, we will talk about it later.

  Qin Tao is not in a hurry, the other party will definitely be in a hurry. Think about what later generations said, the order for the Kilo-class submarine saved half of the people in St. Petersburg, and the old man is waiting for the order from the East to buy rice for cooking.

People from the shipyard and the design bureau came to see them off, and their team will set off in two or three days, embarking on the road to the east. As for the advance payment, the Mingzhou Group has already paid to their account, and everyone is very happy. Excited, looking forward to making a fortune and living a good life next.

   Just like that, a group of people went to the train station. They needed to take the train to Moscow first, and then fly 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 personnel." Xu Zhengyang whispered the news to everyone.

   "They are here to observe our reaction, to see if we really want to leave." Qin Tao said: "We will pretend to be happy and let them down 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 to the nearby Moskva River to have a look. Although the river is frozen now, the scenery is not bad. Time is running If it's suitable, you can go to the Grand Theater to watch a movie. By the way, you can also have a beautiful encounter with the old Maozi's woman."

   Everyone couldn't help laughing. Mr. Qin's age is not yet thirty, so when he talks, he is always so humorous. Isn't it just looking for that kind of woman for a beautiful encounter?

  Everyone can just listen to it, but you can’t do it like this, it’s embarrassing.

  The train rattled and arrived at Moscow Station. Everyone got off the train with their luggage, took a few taxis, toured the city of Moscow, and arrived at the airport before the plane took off.

   "Passengers, please note that the flight from Moscow to the capital of China has been delayed due to bad weather. Please wait patiently."

  When Qin Tao heard the news, he was convinced. The old Maozi must be discussing urgently at this time!

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

   Reduced visibility? What's so scary, the old Maozi's captain once took the initiative to pull up the curtains and land blindly, playing a thrilling adventure.

   Now, the sky in Moscow is bright, what else can't take off, it must be the old man who is discussing urgently.

   This is also good, the big guy can sit firmly on the Diaoyutai.

   "Wait bored, shall we play poker?"

  Qin Tao started to propose.

  Poker is a special hobby of Chinese people. This kind of behavior makes foreigners very incomprehensible. They obviously went on a trip, but when they arrived at the destination, they played poker all day!

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

   "Old Zheng, you lost, stick a note!" Qin Tao picked up a note, licked it with his tongue, and stuck it on Zheng Ming's head.

   "Haha, President Qin, you lost!" Zheng Ming did the same, taking out a note and pasting it on Qin Tao's head.

When Grishin arrived, he saw such a strange scene. The four people playing poker had densely packed notes on their foreheads, which looked like wigs, and their faces I can't see it anymore.

   "Which one is President Qin? Who is Mr. Zheng?" Grishin could only shout.

   Several people raised their heads and pushed away the note in front of them.

   "Mr. Grishin, are you here to see us off? It's really strange that your airline is also afraid of bad weather. When will this plane take off?"

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

   "Have you agreed to our terms?"

   "Shall we get a room at the airport?"

  There are many rooms in the airport. For example, during customs clearance, if someone is found carrying special items, they will be called to these rooms for interrogation. Now, one of the largest rooms has become a temporary reception room.

   At this moment, in the room, a group of people sat down. Qin Tao and the others had torn off the notes from their heads, waiting for Grishin to speak.

"Your request has been carefully considered." Grishin said, "For a price of 150 million US dollars, we can only equip you with 100 TEST-71MKE wire-guided torpedoes. As for the 3M-54E missile , you need to pay for the purchase separately, one million dollars per missile."

   When Grishin was talking, he looked at Qin Tao nervously. Can the other party agree to this kind of condition? The attitude of the other party has always been very firm!

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

   "3M-54E? What's the range?" Qin Tao asked.

   "The range is 220 kilometers." Grishin hurriedly introduced.

   "That is to say, you have reduced the range of this submarine-launched missile by more than half?"

  How did the data leak out? Grishin was annoyed.

When Qin Tao proposed these two weapons, Grishin was a little surprised, because these weapons were for their own use, and they were newly developed. Some **** guy must have collected 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 wants to do this business too much, and the relevant missile manufacturers also hope to sell the missile to make money.

  So, the Navy finally compromised and can sell it, but the weapons have to shrink!

  The model they use for themselves has a range of more than 500 kilometers, but the range of the one sold to China has shrunk to 220 kilometers. In this way, several parties have reached a consensus, so he came to inform Qin Tao and the others immediately.

   But, can they agree?

  Qin Tao didn't speak, and no one else spoke. The meeting room fell into silence.

   "Qin, I know that my attitude is not good. If it is because of me, I apologize to you. We have already made concessions. I hope you will also make concessions, so that we can negotiate this business."

Hearing what Grishin said, Qin Tao smiled: "Mr. Grishin, they hate you very much, because of your existence, many arms deals cannot be done. In their eyes, you are not I don’t want them to do business.”

"Of course not." Grishin shook his head: "I did that to sell the weapons at a good price. This is very important to us, but I also know that it is also very important to be able to sell the weapons. We Now, arms exports to China are absolutely inseparable. Therefore, in the Su-27 negotiations last time, even when we arrived at the airport, we finally unloaded the luggage.”

   At this moment, Grishin finally confided.

  Even if there is no Damao Arms Export Corporation, Grishin also played the role of black face in the negotiation of the first batch of Su-27 before.

  He is not a **** stick, not to disrupt these businesses, he is just to make weapons sell at a better price.

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

"Mr. Grishin, you are the most honest now." Qin Tao was very emotional: "We in the East also pay attention to sincerity. I am moved by your sincerity. Therefore, the plan you proposed, we Accepted."

Accepted?

  Grishin let out a long breath.

  Zheng Ming and Deng Rui and Deng Rui also secretly breathed a sigh of relief, this ending, everyone is happy!

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

"Of course no problem." Grishin immediately agreed. Ten missiles are worth 10 million US dollars. With this money, the missile production factory and the missile design unit can also breathe a sigh of relief. life is over.

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

"It's just that your information is wrong." Grishin continued: "The model 3M54E 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 220 kilometers."

  The business was negotiated in this way, and there were too many twists and turns in it. Grishin was also very moved. From his toughness at the beginning, to the compromise in the middle, to his frankness at the end, the frankness played a role in the end.

   Everyone did not take 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.

  It was already night when we arrived, and the day was so exhausting that we stayed at the guest house of Ruby Design Bureau for one night. The contact between the two sides officially started in the morning of the next day.

   "Welcome everyone." The head of the Ruby Design Bureau, Yuri Nikolaevich-Kormilison, had a smile on his face: "We have been waiting for you here for a long time."

   "Yes, we also want to come here soon." Qin Tao said with a smile: "Meet our Warsaw women soon."

   "Warsaw woman?" Cole Millicent said with some surprise: "Our 636 submarine is code-named Warsaw Song!"

What?

  Qin Tao was a little embarrassed, the code name was wrong?

Lao Maozi's various weapons also have their own code names. For example, 877 submarines, their code name is flounder. Therefore, in Lao Maozi's mouth, he often talks about flounder, and he will definitely not come up with Kilo class. , the latter is the code name of NATO.

The Type 636 submarine is also a Kilo-class submarine. NATO thinks it is just a modification of the Kilo-class submarine. The old Maozi also gave it a code name of Warsaw Song.

   It's just that, I don't know how it spread, but when it comes to Qin Tao, it becomes a Warsaw woman.

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

  Children can be taught, it seems that this must be a relatively friendly meeting.

   Everyone entered the meeting 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 better understanding of this submarine. It is also my most proud work." Cole Millison said, and turned on the slide projector.

Cole Millison, born in 1932, grew up in a shipbuilding family, so he was very interested in shipbuilding, especially submarines. After graduating from university in 1956, he entered the famous Ruby Design Bureau. The engineer worked step by step to the chief designer, and participated in the development of the fourth generation of Soviet submarines. Especially the development of the 877 submarine, he was already the chief designer of this project at that time.

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

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

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

   Bazarov died before dawn!

  The internal structure diagram is marked in great detail! Deng Rui looked at the design drawing carefully, trying to keep the whole 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. The increased part, the hull lengthened by 1.2 meters, the hull increased to 73.8 meters, the increased part is mainly used to install more sophisticated sound insulation vibration damping base and bulkhead sound insulation measures. After some improvements, our 636 type The noise of the submarine at full speed has been reduced to about 118 decibels."

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

  Low?

The noise standard stipulated by the state is 55 decibels. The noise of 100 decibels is the sound of an electric drill drilling a wall or a chainsaw cutting wood. It is 120 decibels, which is even more terrifying. People in this sound environment, a few minutes can cause deafness.

  The decibel of the submarine is 118, so it is still said to be low?

   Among them, there are many technical problems.

   When the submarine sails at low speed, the sound it emits will be very low, and when it remains silent, there will be no sound. As the speed increases, the noise will increase rapidly.

  Secondly, these noises are not heard by the sailors inside the submarine. In the entire submarine, only the engine room is slightly louder. After all, there is a diesel engine rotating inside. Of course, with the advancement of technology, the vibration of the diesel engine is also reduced. The advanced German diesel engine is placed on the carpet to start, and the people in the next room can sleep peacefully. As for nuclear submarines, it is the noise source of the circulating water pump.

  However, these noises are only part of the noise made by the submarine. Its louder noise comes from the propeller, which stirs the sea water, produces bubbles, and makes a rattling sound. In a certain speed range, resonance may also occur.

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

  Of course, not only the propeller, but also the sound of water hitting the surface of the submarine, and these sounds are all transmitted outward.

These are all technical problems, but the sound is generated by vibration. When it travels in sea water, it travels faster than in air, and the attenuation will be faster. Not an order of magnitude.

  Even if the Kilo class is sailing at the highest speed, it emits a noise of 118 decibels and spreads in the ocean. A few tens of kilometers away, except for the subtle low-frequency noise, other things cannot be heard.

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

Therefore, the noise of the Kilo-class submarine is 118 decibels. When converted to land, minus 52 is 66. It is not high. 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 has reached 170 decibels and is called a submarine tractor.

As for the movie, in order to avoid being discovered, it is not necessary to even speak in a low voice, but the knocking sound can be transmitted, so the coin does make a sound when it falls, but it is a stroke of magic to be able to hear which side is up up.

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

  So, everyone was surprised after hearing this introduction.

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

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

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

   The slide of the engine compartment was released.

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

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

"The power system is basically the same as that of Type 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 cruising generator sets and two The emergency diesel generator set remains unchanged. In terms of storage battery, we have upgraded the latest 476 type, the capacity is 1.5 times the original, and the service life has been increased from two years to five years."

  Although Lao Maozi’s submarine has good performance, there are also many pitfalls. The underwater navigation of the submarine mainly depends on the battery, and the capacity drops sharply after two years. It needs to be replaced with a new battery, just like the battery of a battery car.

  The new battery can be used for five years, and the life span has been increased by 2.5 times, which is a considerable improvement.

   "Well, not bad." Everyone nodded.

   "Let's introduce its command and control system again. By the way, in order to guide cruise missiles, we still need to update it. Therefore, the delivery time to you may be extended."

   "We can afford to wait." Qin Tao was generous.

Of course, Qin Tao knows that the basic model 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 tested this year, so there is no such thing at all. matching.

  The real matching package will only be available when the 636M is the improved model. The old man is desperate. In order to sell weapons to support St. Petersburg, he has to go all out!

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

  (end of this chapter)