Chapter 129 Visiting Gas Turbine (for subscription)

   "Ah Choo!" Qin Tao sneezed.

   "Are you okay?" Zhao Ling asked with concern.

  Qin Tao shook his head: "What can happen, maybe someone is scolding me behind my back, well, we are going to reach our destination."

   Coming out of the airport, the group of them had already taken several Gies cars and headed for the Southern Steam Turbine Factory.

Many people know the name of Kuznetsov, because later the old Maozi’s aircraft carrier (it’s called by the way, ordinarily it should be a heavy-duty aircraft-carrying cruiser is more appropriate) was called the Kuznetsov, which was abbreviated by military fans. For the pants ship.

However, if you talk about the later name, many people will know that after the collapse of the Soviet Union, Lao Maozi's various military industries were in a downturn, so they had to save themselves, and some would unite. After the merger, it will be called Shuguang-Machine Design Gas Turbine Design and Manufacturing Scientific Production Consortium. (This name should be familiar to military fans. This institution seems to have another name, called the Kuznetsov Design Bureau. This Kuznetsov, I don’t know if it is the same as the Kuznetsov who built the aero turbine engine. For one, the Kuznetsov Design Bureau specialized in building gas turbines for ships was not found.)

   As for its location, it is in the city of Nikolayev. This military fan is even more clear, because the official name of the famous Black Sea Shipyard is Nikolayev Shipyard.

  That's right, Qin Tao and the others are now located in the city of Nikolayev in southern Ukraine.

  This is the administrative center of Gulayev State, an important river port city and transportation hub in the south, and at the same time, it was already an important shipbuilding base during the Tsarist Russia period.

   At this time, the car was driving on the streets of Nikolayev. It can be seen that this is a clean and tidy modern city. The streets are very wide, with trees on both sides, and the scenery is very beautiful.

  The ancient Gothic church flashed by, and a row of sculptures appeared in the field of vision again. Zhao Ling's eyes kept looking around with radiance.

   "It's a beautiful city!"

   "Yes, it is still an important industrial city." Qin Tao looked into the distance, trying to see the Nikolayev Shipyard, but was blocked by nearby buildings.

  These European-style buildings make people feel like walking in the Middle Ages.

  The car drove into the Southern Steam Turbine Factory and stopped in front of a row of office buildings.

   "Friends, we are here." Nicholas warmly greeted everyone who got out of the car.

"I heard before that when you come to the Soviet Union, you will never get lost, because every city is almost the same, and you can even find your own home. Of course, it may not be your own home inside, it may be someone else's home in another city. "Qin Tao said.

  Nicolas smiled: "Yes, after the end of World War II, we restored the appearance of the city in just a few years. Only a great motherland can do it."

  Although Nicholas digs a corner of the motherland from time to time, he is still very proud of his own country.

  During the conversation, the people inside had already come out, and a man with gray hair stepped forward: "Comrade Nicholas, I just received the news this morning, and you caught me off guard!"

   "Popov, you look good." Nikolai said, "Come on, let me introduce you. These are guests from the east. They are very interested in your design bureau and came here to visit."

  Popov, the person in charge of the Southern Steam Turbine Plant, is different from those big and thick old men. He is of medium build and does not look very strong. Behind his pair of black-rimmed glasses, he reveals the brilliance of a technician.

  Wu Shengli and others came up, greeted each other, and a group of people walked inside.

   "Everyone, this is the most secret design room of our design bureau. You are the first foreign guests to visit here." Popov led everyone into a door, and a spectacular scene appeared inside.

   Just like the workshop of a factory, the inside is very vast, with hundreds of tables neatly arranged there, and beside each table, there is a huge drawing board, and many people are drawing on it.

  Wu Shengli and others were very surprised when they saw this scene.

   Isn't this too backward?

Even in China, the Ship Design Institute has already eliminated paperwork. This was completely stimulated by the design of foreign ships in the 1980s. People asked to modify the design. Already, working day and night.

   Later, computer-aided design was introduced, and it was too convenient to modify.

  Here, are you still using this outdated way of working?

At the same time, on these tables, you can still see some old hand-cranked computers, and some people are shaking them from time to time. At the same time, more people are using slide rules. This kind of special ruler can perform various calculations. In time, it is the favorite of designers.

but now…

   "My friends, your skills are really proficient." Qin Tao said with emotion: "We have some gifts for you, I hope you like them."

  Qin Tao has already prepared all kinds of gifts, which are cheap and suitable for him.

   Another big box was brought over. When the box was opened, all the old men present exclaimed: "Scientific calculator?"

In Qin Tao's previous life, he worked with many old men. Their professional skills were impeccable, especially their mathematical knowledge. They were very solid. They would often carry out various complex calculations with a slide rule, which was very fun. , let Qin Tao admire very much.

However, when Qin Tao gave them a batch of scientific calculators, they immediately threw away the slide rules and started using computers. Opportunity to use the calculator!

   Calculators are small, flexible, and easy to carry. They can only be manufactured when the chip industry develops to a certain extent.

   Lao Maozi also has, not to mention simple addition, subtraction, multiplication and division calculators and scientific calculators that can perform complex function operations. In 1986, Lao Maozi also released the first electronic-85 calculator that can support basic language.

However, these calculators are too expensive and the output is low. In many scientific research institutions, there are only a few of them, which cannot be widely used. Over the years, Lao Maozi’s precious foreign exchange has been used to import food, and there is no It is impossible to import these seemingly unimportant things. Anyway, these people in the Lao Maozi Research Institute are also used to using slide rules.

(Actually, although Lao Maozi attaches great importance to electron tubes, the development of the microelectronics industry is not as bad as advertised. Lao Maozi imitated the 8080 series chips very early, and also has his own microcomputer. However, Lao Maozi's microelectronics industry is not It is very developed, but the output is not high, and it is impossible to equip various scientific research institutions with large quantities. When the Soviet Union collapsed, we got experts from Lao Maozi, and almost all of them are masters in using slide rules.)

   Now, when they see the calculator, they are immediately pleasantly surprised.

"No, this is not a scientific calculator, this is a graphing calculator. Look, its screen is bigger than ordinary calculators!" Sergey, the chief designer, picked up the calculator and looked at the large screen above. He murmured: "This is really a good thing!"

In this era, although there is no large-scale LCD screen, the LCD screen used to display numbers has long been popularized. They have seen ordinary calculators with a long strip display on it, and Now, the display of this calculator is not a strip shape, it is a rectangle, in the sunlight, you can still see the LCD dot matrix inside, this is a high-end product!

  Sergey's eyes are looking at the logo on the top of the screen. The left side is the brand name, CASIO, and the right side is the specific model, fx-7000G.

   That's right, this is the most high-end calculator after just entering the 1990s! It has an astonishing 13 internal calculation digits. In addition to simple four arithmetic operations, it also has various basic elementary functions, angle operations and coordinate transformation functions, and even has Abs (absolute value), Int (integer part extraction) ), Frac (decimal part extraction).

  Because it is aimed at the advanced user group, the functions of scoring, sorting and combining have been cancelled.

  Sergey held this calculator, just like a child got his favorite toy.

   "Unfortunately, it doesn't have the function of calculus." Sergey continued after reading all the keys, "It would be great if it could have the function of calculating definite integrals using the Simpson method of numerical calculation!"

  Ordinary users will not know what calculus is for, but for technical people like them, they have to deal with calculus almost all day.

"Yes, it does not have the function of calculus, but it can be programmed. Whether it is integrals, complex numbers, or matrices, it can be programmed on it. In the accompanying manual, there are examples of programs including Simpson integrals. You guys You can study it."

   "Really? Great!" Sergey was very happy.

A calculator was distributed to each person, so the orderly work scene when they first entered here disappeared, and almost everyone was studying with the calculator handed to them. Their hand-cranked computers, Their slide rules were thrown aside.

  Looking at this scene, Zhao Ling was very emotional.

  Choosing a gift is really important! Those high-ranking military officers all love to drink, so it is enough to provide them with good wine. As for these technicians, what they need is advanced computing tools.

   Moreover, these calculation tools did not cost money, they were obtained from the materials seized by the customs! Qin Tao can be regarded as saving a lot of expenses for the Navy. Of course, some of the calculators were sent back to Mingzhou Shipyard directly. Behavior, no one said anything, after all, without Qin Tao, they would never have thought of giving these things.

   Now, the presents have satisfied the people here, even Popov, the person in charge here, is very satisfied.

   "Nikolai, thank you for the guests you brought, they are so nice!" Popov said excitedly to Nikolai.

   "Why is my program always wrong?" Sergey suddenly shouted.

  Qin Tao walked over, looked at the codes on the screen, and said, "You haven't mastered the program format yet. These statements need to be separated by colons. Now, the calculator cannot recognize them."

  Sergey suddenly realized.

  Qin Tao glanced at the paper next to him again. It was densely written with formulas, and he shook his head involuntarily.

  Sergey saw Qin Tao's appearance and couldn't help asking: "What? Is there a problem?"

   "Three-dimensional method." Qin Tao shook his head again, walked away without saying anything else.

  Looking at Qin Tao's back, Sergey was shocked. The other party is definitely an expert. He actually knew these formulas and planned to use the latest three-dimensional method to design them. However, why did the other party shake his head? Is there something wrong with your own design?

   "Mr. Nicholas, our leader wants to see the real machine, is that okay?" Qin Tao asked.

"Of course no problem, I'll take you there." Before Nikolai could speak, Popov spoke. These guests sent them the most needed gifts, and they were very grateful. Now, the other party's inspection request, Of course it cannot be refused.

  Actually, you can’t see anything from the real machine, but you can see some tricks from the design room.

  However, Lao Maozi's thinking is not like this.

China is a backward country. There is no innovation in aviation engines, and even less in the gas turbines used in warships. Therefore, they don't care. I took them to the design room here to show them. The huge scale of this research institute shocked these bumpkins.

   As for stealing a teacher? What do these people know? They didn't even know what it was.

  Now, the atmosphere is very friendly, and the other party wants to see the prototype, of course there is nothing to refuse.

"What you see now is our most advanced marine gas turbine." Leading everyone to the test area, Popov pointed to one of the large machines and said: "Its model is called GTD15000, which belongs to the axial-flow three-shaft The gas turbine, with a power of 20 megawatts, was developed in 1971 and was successfully developed in 1984. At present, it has been equipped on many warships including the Glory-class cruiser, and it is the pride of our Soviet Union."

Lao Maozi has a Kirov-class nuclear-powered cruiser, but it is too expensive, and they can't afford it, so they built a reduced version of the conventional power cruiser Glory-class. The few ships produced in the later period are equipped with four GTD15000 as Acceleration power, and two early models as cruising power, all-combustion power, quite advanced.

At this time, everyone was looking at this prototype, with a cylindrical front end and a cubic structure at the back, showing the rough style of the old man. Wu Shengli couldn't help asking: "What kind of aero engine is this engine on?" improved?"

   Qin Tao wanted to stop it, but it was too late. Zhao Ling quickly translated Wu Shengli's question.

  Qin Tao could only support his forehead with his hands, which was embarrassing.

"No, no, our gas turbines are different from aero engines. When we started developing gas turbines in the 1950s, we found that gas turbines improved by aero engines in the West were very inappropriate. After all, there are significant differences between the two. Therefore, we had to develop a special gas turbine, and our design bureau was established at that time." Popov said.

   Except for Lao Maozi, other countries use aero engines to improve. Take the most famous LM2500 gas turbine as an example, it is improved with the famous TF39 turbofan engine.

   "Yes, lifespan is the biggest problem." In order to save face for Wu Shengli, Qin Tao could only take the bait and say it.

  Other countries can change it, but the old man can't, because their engine life is too short! Even the Su-27 I saw a few days ago, the AL-31F engine used has a lifespan of only 300 hours. If it is used on a warship and it doesn't go far, the engine should be overhauled.

"Yeah, this is a problem, there are other problems, in short, we are on the road of special research and development." Popov said: "We also need to take into account the needs of the navy, for example, to withstand underwater explosions , shot, and torpedo shock waves, our gas turbine design can resist 41G explosion vibration shock, which is currently the most shock-resistant naval gas turbine, how much explosion vibration shock can the LM2500 you imported from the United States withstand?"

  The other party asked this rhetorical question, and the people present couldn't answer it. After all, the leaders and their assistants were the ones who came here.

   "American gas turbines can only withstand the impact of 15G explosions." Qin Tao immediately replied, and these people must not be stumped.

  LM2500 is improved from the jet engine. The jet may disintegrate if the overload exceeds 10G. The vibration of 15G is enough, but it is obviously not enough for the navy.

Hearing what Qin Tao said, Popov had a proud smile on his face. Before he could show off, Qin Tao continued: "However, American gas turbines are installed on a special base. This base can withstand a 200G impact."

   It is obviously unrealistic to rely on the gas turbine itself to resist the shock wave. Therefore, the Americans simply use a special base to solve the problem, so that the needs of the warship can be met.

  The smile on Popov's face froze.

   "Well, it's getting late, Popov, isn't it time for your cafeteria to open?" Nikolai said.

  Nicolas brought the guests from the east, so of course he couldn’t neglect it. After this investigation, the whole afternoon was over, and the next thing, of course, was to continue to eat and drink.

   "Yes, everyone come with me." Popov said.

  The crowd continued to move forward. When they came to a certain dusty machine, Qin Tao glanced at it: "Do you sell these rags?"

   PS: The last chapter has 4,000 words, and this chapter has 5,000 words. They are both big chapters. They are dedicated to everyone. Please subscribe, ask for rewards, and ask for votes!

  

  

  (end of this chapter)