Super military empire

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The engine assembly work is indeed a very big technical problem.

Not only aero engines, but also other engines. The aircraft can fly, relying on a strong heart to provide power.Missiles also need powerful engines.

The power workshop in Zone 1 not only produces turboshaft engines for helicopters, but also produces engines for missiles. The engines of Houyi and Black Arrow series are all produced by Zone I. The turboshaft engines of Zhi-91 are all produced in Zone 1. They also produce it.

As Hou Yi and Black Arrow performed well on the battlefield in the Middle East, they received huge orders, which raised the assembly capacity of a district to a very high level.

However, just this, the turbofan engine that requires higher assembly accuracy is still somewhat insufficient.

As Liu Yijiu said, what the fighter engine needs is long-term repeated use, and the missile is a one-shot deal, as long as the output power is strong enough.Even some small rocket artillery shells are not equipped with engines at all!

The first engine after the improved process, Liu Yijiu has been guarding since the beginning of welding, and the quality requirements have almost reached a harsh level.

In terms of quality assurance, even with the Seven Expertise Agreements, China’s industrial base is backward and quality awareness is not too high. Compared with the Soviet Union and NATO countries headed by the United States, it is still much worse. Liu Yijiu led Qi Hai and others. An expert team composed of humans fully followed up, and the quality all reached the highest level of China's manufacturing industry.

The eagle flying in the blue sky of the Republic must be given an absolutely powerful heart. Liu Yijiu feels that no matter how hard it is, it is worthwhile.

For this reason, the most outstanding nine-level assembly fitters were specially recruited from the Ninth Institute and One District. These are the top technical experts in assembling turboshaft engines used in helicopters. The same is true for the 132 factory. Apprentices, in order to achieve the highest level of assembly, even borrowed three 9-level assembly fitters with the best skills from the Aerospace 002 base.

The assembly of the first turbofan-8 after the improved process has gathered China's top assembly technology forces.

"From tomorrow, it will be the assembly of our first turbofan-8. Whether our fighter can soar in the sky depends on our work..." Liu Yijiu, the night before the assembly As well as Wang Yueshan and others, the leaders of the 611 Institute, the turbofan R&D team and the leaders of the 132 factory, all gathered together, not for anything else, just for the mobilization meeting.

In the face of the people present below, more than a dozen top assembly fitters from the Ninth Academy, Aerospace 002 Base, and 132 Factory, with an average age of over 52, sat at the front.

Their faces are complex, some of them are excited, some are worried, and many of them frown.

Looking at the big guys on the rostrum, and then at the technicians behind them, no one does not feel nervous.

Liu Yijiu even used the first turbofan-8 engine to refer to the engine they will begin to assemble tomorrow.

Moreover, it is still two at a time, directly on the air test platform, once the engine fails, the aircraft will not fly, once the engine assembly fails to meet the requirements, this will hinder the progress of the entire fighter project.

They are the top assembly fitters in the country, yes, but they are also facing the biggest technical challenge of the current manufacturing industry in the country!

"...I hope everyone will go all out and try to assemble our fighter heart in a short time. To be honest, many of you here know that the prototypes of our new generation fighters manufactured by Factory 132 have always been Waiting for the engine..."

Liu Yijiu didn't care about putting pressure on these assembly fitters.

After the mobilization meeting, Qi Hai asked Liu Yijiu worrisomely, putting too much pressure on whether these assemblers would not perform as much as they wanted.

"Their ability to withstand pressure is beyond our imagination. Human potential can only burst out under the pressure of making them about to collapse. The Soviet Union and the United States also rely on human assembly, why they can do it, we can not do it ?" Liu Yijiu explained.

Compared with the Soviet Union and the United States, the domestic nine-level fitter is still a lot worse.

Especially the top fitters in the United States and NATO.

Of course, this is not because domestic fitters do not work hard, but because they have seen the most top-notch parts, and their experience in assembling top-notch equipment cannot be compared with the United States and the Soviet Union.

They must be pressured and let them give full play to their subjective initiative in order to make them more careful and cautious in the assembly process, and at the same time allow them to think of more effective methods.

If nothing else, it was clear from the time when the domestic atomic bomb was launched.

China's atomic energy industry began to develop with the help of Soviet experts. However, when the foundation was not well laid, the Soviet Union withdrew all the aid to China experts from the Republic.The nuclear engineers of the Republic, even the top nuclear physicist Qian Sanqiang, are not clear about how to build the atomic bomb.

However, in a short period of 4 years, basically a blank foundation, China raised a mushroom cloud in Lop Nur at 3 pm on October 16, 1964!

The first atomic bomb in the United States has a deep industrial foundation, a huge scientific research population, and the world’s top nuclear scientists. It lasted 6 years. The Soviet Union did the same. It took 6 years and 9 months. However, China, without an industrial foundation, Without a complete set of equipment, not much foundation, not even a computer, relying on an abacus to perform complex mathematical calculations also created an atomic bomb.

How bad were the conditions when China made the atomic bomb?

No foundation, no laboratory, no funding!

From the words of Premier Zhou, it can be seen: "The Chinese have to make an atomic bomb even if they don't have pants to wear!"

Now that the conditions are good, instead of the previous results under the difficult conditions, how can this work?

In the early days of the establishment of the Republic, especially when the older generation of scientists were still alive, the foundation of the Republic went from being poor and innocent to very strong. However, due to problems such as reform and opening up, technology introduction, etc. With more talents, better conditions, and larger funds, they lose their previous scientific research capabilities.

This situation lasted for a long time.

It’s because people’s thinking has been affected. Researchers are called beasts, plagiarized papers, falsified academic reports, etc., scientific research funds are used for personal consumption, and even these funds are used to raise women...

Although this is only part of the rubbish, they are a great insult to the older generation of scientists and all technicians who have dedicated their lives to the development of the motherland!

Compared with the current group of older generation of scientific and technological personnel, they are completely a pile of rubbish.

Liu Yijiu couldn't imagine how painful it would be if he only appeared in that era and wanted to get things done.

These old technicians in front of them are definitely scalpers who work hard.

They must be allowed to play at the top level!

If so, Liu Yijiu could not explain to other managers, he could only hold himself in his stomach.

On the second day, all the parts needed for the engine were transported to the assembly workshop. More than a dozen assembly fitters did different jobs.Some are equipped with fans and impellers, some are equipped with casings, and some are equipped with pipes and electronic equipment outside the engine...

At the beginning of the assembly, the problem was not too big, especially since the relationship with this engine was too important. A large group of leaders stayed there all day, staring at them for work, and these people were under greater pressure.

No problems are allowed.

With the work of many 9-level fitters and middle-aged fitters, the engine assembly progress is very fast.

The many parts that were originally scattered have gradually become larger and fewer parts.

By the time of the final assembly, all these more than a dozen old fitters had done it themselves.

"No, it's 1 lead (0.01mm, some called 1 wire, the name used in the machinery industry), disassembled and reassembled... come here a little... later, come back a little..." Many things , There is no special tool for testing.

Especially when assembling the impeller.

Although the welding process is used on the engine impeller to make the entire impeller as a whole, the accuracy can be guaranteed. When the impeller is assembled into the engine to form a whole, it is indeed the most complicated, most difficult and time-consuming whole engine assembly. work.

Several old technical workers with gray hair personally took action.

It is to ensure that the impeller inside the engine can reach the designed concentricity, that is, when the impeller inside the engine rotates, the 21-stage fan impellers all rotate around the same straight line in the middle.

No matter how powerful an assembler is, it is impossible to guarantee that two different revolving (circular) parts can completely ensure that the center of the circle is on the same straight line. At most, the line where the center of the circle lies is infinitely close when the two parts are assembled.

In the design process, the turbofan-8 engine, 21 impellers, are assembled on a shaft. It is required to ensure that the center of each one does not deviate more than 0.0015 mm from the theoretical center!

A human hair is about 0.06~~0.1 mm, that is to say, 21 impellers with a diameter of nearly one meter, after assembly, each must ensure that the deviation from the central theoretical axis does not exceed one forty root The deviation of the hair!

This is a tolerance that makes the insiders feel terrible.

Of course, laymen will not be too shocked at all, because they don't understand how terrifying the assembly accuracy of one-fortieth hair is!

Even though, they know that this data is very small.