Chapter 210 The propeller of the 052 destroyer

Qin Tao, who was far away in Europe, didn't know that when he left Mingzhou Shipbuilding Industry Group, they signed a contract for two catamarans, and the conditions were very favorable. However, although Qin Tao and Zhao Ling were on their honeymoon , but still not idle, but also working hard for the development of the group.

Qin Tao works under the lights. As a reporter, he has to fulfill his promise and write a special interview manuscript for the 209 submarine. The No. 1 electric submarine. Zhao Ling drew all the design drawings of the large-scale 209 submarine according to her own memory.

   When the two of them have finished all this, it will be dawn.

   "It was really a night of fighting." Qin Tao said.

   "I can guarantee that this design drawing is perfect, Brother Tao, with this, we can start building ourselves, right?"

  Listening to Zhao Ling's words, Qin Tao smiled and shook his head: "Of course not, it's still far away."

  Why? Zhao Ling looked at Qin Tao curiously.

"The weapons and equipment of any country have their own characteristics. We can use this blueprint as a reference, but there is absolutely no need to copy it. For example, up to now in our country, double-hull submarines are still used as the basis. Lord, it will take a certain amount of time for the navy's submariners to adapt to single-hull submarines. Moreover, we only got a standard design drawing, and we don't have many of the equipment on it. , the lack of many systems makes it unable to have combat capabilities."

Originally, Zhao Ling was only engaged in anti-aircraft missiles. Later, she became a military representative and dabbled more. Now, with Qin Tao, she became a free helper in the shipyard. There is vision.

  After hearing what Qin Tao said, she naturally understood that there is no way to build a submarine with only the blueprints.

   "Besides, we can't make the shell, because there is no plate rolling machine." Qin Tao said.

   "Then shall we buy one?"

   "Don't worry, buy it now, the price is too expensive, in the future, we can pick up the junk."

  Qin Tao is looking forward to picking up trash again. After all, Lao Maozi's huge empire will soon collapse.

  At that time, the domestic navy will purchase Kilo-class submarines, then obtain the information of Kilo-class submarines, combine these materials, combine East and West, and finally come up with submarines with their own characteristics.

  So, the current information is just for reference.

   "It is better to send the materials back in the name of Liberty News." Qin Tao said: "This manuscript must also be sent to the headquarters of Liberty News. I guess I can get a manuscript fee."

  Boom boom boom!

   Just then, there was a knock on the door.

  Vitalia has come to look for them. When she saw the red circles of the two people, Vitalia was shocked: "Last night, you..."

   "I wrote a manuscript, please send it freely, and I want the manuscript fee!" Qin Tao said.

  Vitalia smiled: "Of course this is no problem, I will do it right away."

   "There is still something, I hope to send it back to China, or according to the address last time." Qin Tao continued.

"good."

  Therefore, Zhao Ling's meticulously drawn design was mixed with a bunch of goods purchased from Germany and sent back to China by express.

  Now that you have come to Germany, of course you have to visit the capital of Germany.

"If you came here two years ago, you could only fly over and see the magnificent Berlin Wall. Now you can only go to the ruins." Vitalia continued to give Qin Tao and Zhao Ling and Zhao Ling were acting as tour guides. At this time, they were traveling in a Mercedes-Benz car on the road to Berlin.

  Hearing about the Berlin Wall, Qin Tao was filled with emotion. The most famous incident during the Cold War was the fall of the Berlin Wall.

  After the end of World War II, Germany, as a defeated country, was divided and occupied by the East and the West, and the German capital Berlin was also divided into two. However, due to various problems such as the system, many people in East Germany hope to live in West Germany, and they will not come back after they pass.

  This state angered the old man, want to run? no way! Let's get to the wall!

Just like the United States built a wall on the border to prevent Mexican smugglers, Germany also built a wall during the Cold War. Although it is called the Berlin Wall, it is actually erected at the junction of the entire East and West Germany .

   Unfortunately, times are changing!

   "Yes, the Berlin Wall is gone. If you get a few pieces of building materials from that time and store them up, you might be able to sell them for a lot of money in the future." Qin Tao said: "This is a witness of history."

  Vitalia smiled: "Qin, your thinking is always different from others, no wonder my father values ​​you so much."

  Qin Tao's thinking is different, of course, because of decades of experience, this thing, after the hype, can really sell for a good price.

   "Look, there is a high wall over there!" Zhao Ling suddenly shouted.

   "That's right, that's the site of the Berlin Wall." Vitalia said to the bodyguard and driver, "Let's go and have a look."

  At that time, people were so angry that they started to dismantle the Berlin Wall spontaneously. Everything in the downtown area collapsed almost instantly, and only a few Berlin Walls remained.

   When people found out that they wanted to commemorate the history, only a small part was found, and the longest section between Berlin East Railway Station and Oberbaum Bridge was found.

  This part of the Berlin Wall was preserved, and then, many painters painted here, forming a unique scene.

   A few people are strolling here.

"Why is this kind of picture everywhere?" Zhao Ling looked at the scene where the two men hugged and gnawed together, and she was very curious. She had seen it when she was at Lao Maozi's place. Now, on the Berlin Wall, there is actually appeared again.

   "Because, this is history." Qin Tao said.

   After visiting the Berlin Wall, it was another day of shopping. Qin Tao was a little curious. When Zhao Ling bought clothes, she carefully selected them. In the past, she didn't seem to like shopping for clothes very much!

  Wait, how did you start shopping for men’s clothing? I don't seem to need any clothes, do I? However, he couldn't stop the enthusiasm of the two girls, so soon his hands were full.

   That night, after checking into the hotel, Qin Tao finally articulated his doubts.

   "Xiao Ling, you didn't seem to be so passionate about clothes before." Qin Tao said to Zhao Ling.

   "That's because I ignored it before."

  Neglected before? Qin Tao was a little puzzled.

"Our mother has already become the director of the garment factory, and she is busy working for the garment factory all day long. She plans to take the high-end route according to what you once proposed. Of course, she needs to have high-end styles. Buying these clothes back, yes For our mother's reference." Zhao Ling said.

  Qin Tao finally realized that Zhao Ling was thinking about it for her mother-in-law, and she was immediately moved: "Xiao Ling, you have a heart."

   "I see that there is a clothing exhibition recently. If we are free, we can go and see it."

  Qin Tao nodded: "Well, of course, it would be great if I could bring back a master fashion designer."

"I guess it's difficult. The aesthetics of Europeans is different from ours." Zhao Ling said, "The clothes we bought can only be used as a reference. Masters of fashion design will also be uncomfortable. "

  Qin Tao nodded, well, you are right, after speaking, Qin Tao picked up the phone on the table.

   I haven't contacted the country for several days, so I called back to ask about the situation.

  Qin Tao was instantly shocked by this question.

   "What, signed a contract for two catamaran passenger ships? Thirty-five million? Okay, good, you guys are capable!"

   "Boss Qin, you are over-rewarded, and it's all thanks to Gong Gong."

   "You have to do a good job. Passenger ships are different from warships. You should pay attention to luxury. You should study more about the products of international counterparts."

   "What? The gantry crane has arrived? Then install it, yes, just allocate funds to them according to the contract."

   "What? Sweden, Kameva has a mission? Okay, I see."

  When he put down the phone, Qin Tao spread his hands helplessly: "It seems that our itinerary has to be changed. It is estimated that the task was ordered by our father. The old man has spoken, and we are in Europe again. We have to go and have a look."

   "Well, listen to you."

   "Let's say goodbye to Vitalia tomorrow."

In the afternoon of the next day, Qin Tao brought Zhao Ling to the Kameva company in Sweden. After separating from Vitalia, Qin Tao also used his original identity, so he soon got in touch with the person in charge here. converged.

Jin Mao, an expert in the navy's equipment department, is a top student who graduated from Harbin Institute of Technology. After graduation, he worked in the navy. Although he did not wear a military uniform, his years of military career still made his every move look heroic. It will make him look polite.

  At this time, Jin Mao was frowning at the huge propeller with a diameter of several meters and a slight yellow metallic luster.

   In front of him, visible to the naked eye, black oil was slowly oozing out.

   "No, this variable-pitch propeller is of substandard quality and cannot meet our requirements, so it must be redone!" Jin Mao finally made up his mind.

Hearing his words, Rosenberg, the person in charge of the Swedish Kameva Company, immediately shook his head: "This is not a big problem at all. Any variable-pitch propeller will leak oil. This is the first time you have come into contact with variable-pitch propellers. So I don’t know much about the technology inside, and the missing hydraulic oil can be refilled after going out to sea.”

  At present, domestic warships still use fixed propellers. It was not until the development of the 112 destroyer that they decided to use variable-pitch propellers.

The concept of variable pitch appeared in the aviation field. In the propeller, there is an angle (pitch) between the centerline of the hub and the centerline of the blade. However, the angle of the ordinary propeller is fixed. , and this included angle is variable, and different blade angles can be selected according to different speeds to better utilize the efficiency of the propeller.

During World War II, aircraft propellers began to use variable-pitch propellers. In the late World War II, the large plate on the top of the helicopter achieved different power outputs by changing the angle of the blades. The helicopter pilot pulled the helicopter up. This action is called lift. The gap, which is the handle like the handbrake on the left hand side, has always been inherited.

The propellers on ships have also begun to use variable-pitch propellers. It can even be traced back to the era of steam engines. Because it is inconvenient to reverse the propeller, so we consider variable pitch and reverse the blades of the propeller, so that we can directly reverse the car. .

(As mentioned before, reversing is very complicated on ships, and there are many benefits to be able to save the reversing gear. There are also readers who strongly object, so I will repeat it here. For designers, the reversing gear is unnecessary. !)

   Later, the technology gradually developed, and variable pitch propellers became more and more common.

  China is also researching. In the 1950s, there was a variable-pitch propeller with a 350-horsepower engine. Now the largest propeller manufactured in China can already be installed on a 9,000-horsepower engine.

  However, the gas turbine on the 052 warship can output tens of thousands of horsepower, and such matching variable-pitch propellers cannot be manufactured in China, and such propellers can only be purchased from outsiders.

After all, this device can obtain various thrust values ​​from the maximum positive value to the maximum negative value only by changing the pitch without changing the steering of the propeller and the main engine, which can save the reversing device and It can shorten the reversing sailing time of warships.

  The previous warship, the captain shouted: Double cars, reverse at full speed! If it is with a reverse gear, it will be very complicated. There is no clutch on the transmission shaft of the warship, so first stop the engine, then wait for the gears in the gearbox to stop, then switch to the reverse gear, then start the engine, and then fully Power running. (This is made up by the hero of East China. I don't know if it is really necessary to do this.)

   Now, it seems that 052 is about to go into the water, but the propeller is still there.

  The country is very anxious. Without propellers, 052 cannot be launched! Jin Mao brought someone over, and the other party took out the propeller, so Jin Mao quickly checked and accepted it. Who would have thought that the "oil retention test" hadn't lasted for eight hours, and oil would start leaking!

Ordinary propellers are cut out of a solid metal block, but this variable-pitch propeller is not. The increase and decrease of the pitch of the propeller are adjusted by liquid pressure. There are special mechanisms inside: piston, cylinder, hydraulic oil, etc. . The hydraulic oil pushes the piston to move, and the piston drives the connecting rod and other mechanisms to change the pitch of the propeller.

This set of mechanisms is located in the center of the propeller, and the inside is hollow (it should be called the propeller hub). During the test, it needs to be filled with hydraulic oil and then pressurized. It must be kept for at least 24 hours without oil leakage before it is considered qualified. .

   But now, just eight hours later, the oil leaked.

  Since it is unqualified, it will be rebuilt, but the Swedes obviously refuse.

Hearing Rosenberg's words, Qin Tao was amused: "Is it normal for variable-pitch propellers to leak oil? Excuse me, are you a professional? Should we double the Lloyd's Standard? Let's not talk about the standard of warships." Let’s talk about civilian standards.”

   "Who are you?" Rosenberg asked.

"Me? An ordinary person, I just opened a shipyard under my command to build ships for some foreign customers. I have read the information of Lloyd's Shipping Society more than a dozen times. Are you really sure that you are a professional? Back then If you know that you are not professional, you should not give the order to you, Siemens is still waiting."

"Of course we are the most professional!" When mentioning this, Rosenberg immediately became proud: "Our Kamewa company was established in 1860, and it is a very old shipbuilding company. We are the leader in the industry when we are away from the propeller!"

  We are an old factory, we are the elite in this industry! Rosenberg is very proud.

"Really? The most professional, this kind of problem happened?" Qin Tao looked at the other party: "And, is it still this attitude? According to the rules, this kind of mistake should meet the standard of return, otherwise, we will Go through the process of returning the goods, let’s find an unprofessional Siemens company to make them.”

Jin Mao nodded: "You have delayed the time several times, and now we have come, but there is another serious quality problem and you refuse to admit it. In my opinion, we have to return the product. Even if it is a lawsuit, we will not deal with this kind of company. deal!"

   "No, please don't!" After all, the contract has been signed, and if the product is returned due to quality problems, their company will also have to compensate for the loss.

Rosenberg rolled his eyes, and then said: "Lloyd's Register of Shipping stipulates that it is for civilian ships. Our warships have different standards from theirs. During the test just now, the pressure was a bit high, so these hydraulic oils are not Quality defects come out, but come out from the gaps of metal atoms!"

  Cracks of metal atoms come out?

Qin Tao stared at Rosenberg: "Sure enough, your side is really professional enough. It takes at least 500 atmospheres of pressure to press the hydraulic oil out of the gaps in the metal atoms. How much is the pressure now? Not even 50 atmospheres." , there are only fifteen, in this case, can the hydraulic oil come out? Did God reach out to help push it?"

  An iron drum for storing oil has been placed for a very long time, such as decades, and the surface of the oil drum can feel a little smooth, that is, oil seeps out. However, the oil drum is well sealed, how could it come out?

The answer is the gaps between the atoms inside the oil barrel. On the surface, the oil barrel made of metal is very dense, and nothing can come out. However, if you use a vacuum tunneling microscope, you can see the huge gaps between the metal atoms one by one. Voids, if a metal atom is compared to a ping-pong ball, there are only three or five ping-pong **** in the playground, and other places are empty.

  So, the gap inside is very large, and oil molecules can easily pass through, but this is at the atomic level.

   Either it will take decades, or it will be pressurized. Now it can only be attributed to the hand of God.

After Qin Tao finished speaking, he glanced at the other party with contempt: "Besides, whether it is a gap in the metal atoms or a manufacturing defect, it is very easy to identify it. All you need is an endoscope. Now, put the oil out Come on, let's observe with an endoscope!"

   After finishing speaking, Qin Tao glanced at Rosenberg again: "Your professional factory doesn't have an endoscope, right? If not, we'll go out and buy one."

   The sweat on Rosenberg's forehead swished out, and he already felt that he couldn't get away with it no matter what.

   "We do have endoscopes, but we need to coordinate and go through the process, so we can deliver them tomorrow. Please come and check them tomorrow, is that okay?"

tomorrow?

  Qin Tao smiled: "Shouldn't you rush to work overnight to make up for the gaps inside?"

"Of course not. We are the leader in the propeller industry. How can we do this kind of thing? Tomorrow, you will come over and check with an endoscope. You can't find anything. By the way, tonight, we will set up a dinner party , you are welcome to attend."

"tonight?"

   "Yes, tonight."

   "The old ancestors said it well, the mouth of others is soft, and the hands of others are soft. If we want to eat, we have to wait until the product is qualified. We can eat and drink after receiving it. Now, it is still free."

  PS: There are many versions of this propeller, some of which have been artistically processed, and they are exaggerated at first glance. There are many materials that are written casually without knowing the structure. A layman like the hero of East China can see that something is wrong. Therefore, those materials are not very credible. At this point in time, Huadong Zhixiong was placed in 1991, as long as it was installed before 112 was launched.

   Also, this chapter was originally 6,000 words long, but when writing about the Berlin Wall, I added some extra stuff, which might violate taboos, so I deleted it, and it was not enough for 6,000 words.

  

  

  (end of this chapter)