Understanding the situation, Xie Kai really began to sympathize with Liao Dongfeng.

Zheng Yucheng and others must have their reasons for doing this, and Xie Kai didn't have much to say.

"However, Lao Zheng, the Hangfa Power Factory is also a highly confidential unit, and the canteen is contracted out, and in order to save costs, it recruits people from outside, which is not good for the confidentiality department. Xie Kai reminded Zheng Yucheng.

The old man shook his head, "The contractors are not from outside, but from their own units. If you can't even do this bit of work, Liao Dongfeng won't do it as soon as possible. ”

The old man's mountain-mindedness is very serious.

The two did not discuss anything about it again.

After the meal, there was no long rest, and dozens of people sat in the conference room in the office building of the power plant headquarters.

"Regarding the large press, the casting of the main girder has been completed, and rough machining has begun, and the quality problem of the main girder has been effectively solved. Other projects of the large press are progressing in an orderly manner, Qin Fei's production plant has been completed, and the installation of the crane has begun, and the large press can be completed and put into operation within a year and a half. At the beginning, Zheng Yucheng first introduced the progress of the large press, "The bottleneck that originally limited our engine technology can be said to have been solved......

"Whoa......

Warm applause rang out.

Whether it is turbofan-8 or turbofan-6, it can be regarded as a successful development.

After all, small batch production has begun, reaching the previous technical indicators, the reason for the dismount, on the one hand, is the supporting project off, the engine is useless, on the other hand, the technical defects.

Other people's engines can fly for at least thousands of hours before they need to be overhauled.

This thing developed in China has reached its ultimate life after running for hundreds of hours, and it can't fly anymore.

"Turbofan-8, before we took over, there were three batches of a total of 12 small batch production, until now, the engine is still installed on the Boeing 707 test flight, the previous production, basically all scrapped......" Sun Hong said, his tone was a little heavy.

Zheng Yucheng looked at him, "After we took over, didn't we get the production test task of 4 units again, and we want to continue to do the service life test?"

"It is already in production, and it was originally planned to wait until the production of the large press is completed, and use new processes such as integral casting turbine discs and integral casings, and forging titanium alloy blades to improve the service life......," Sun Hong said.

Without explanation, Xie Kai knew that the slow progress of the big press had slowed down the development progress of the engine.

At the beginning, he mentioned that Zheng Yucheng, Wang Guilin and others began to plan the establishment of an engine factory, but they did not expect them to have such great courage and directly issued the test production task of 4 engines again.

This is another tens of millions of funds to go out, plus follow-up tests, etc., to hundreds of millions.

"What about the turbofan-6?" asked Zheng Yucheng.

"Let Mr. Jiang say it. Sun Hong looked at another thin old man.

Jiang Chenyang, a lesser-known but solid engine designer from 606, has a background of studying in the Soviet Union.

Zheng Yucheng had introduced several main persons in charge to Xie Kai before.

"The problems faced by the turbofan-6 are the same as those of the turbofan-8, and now it has been in the stage of improving the design and testing the parts...... Jiang Chenyang introduced the situation of the turbofan-6.

Xie Kai knows that the thrust-to-weight ratio of the turbofan-6G engine can reach 7.05.

That service life......

Through the introduction of the chief engineer of the two project teams, everyone has an understanding of their respective situations, and many people believe that as long as the large press is solved, this can improve a lot of performance.

Xie Kai knew that there was definitely more than that.

Otherwise, the problem of aviation heart disease would not limit the entire country for decades.

"Is there a breakthrough in materials, especially in alloy materials that are resistant to high temperature and high pressure?" Xie Kai's question was very ordinary, but it made everyone silent.

The base material is key.

Otherwise, no matter how good the design is, the material will not meet the basic requirements and will not be realized.

Jiang Chenyang hadn't seen Xie Kai, and he was originally very contemptuous, only thinking that he was the child of a certain executive of 404, and followed Zheng Yucheng here to mix seniority.

At this moment, I couldn't help but look at Xie Kai a few more times.

"Not only do we have to solve the design problem, but also the material problem, which is a hurdle that we can't bypass. For turbofan engines, the temperature of the turbine inlet is directly related to the performance of the engine. Xie Kai said, "In such a situation, I want to ask you, how to solve the material problem?"

Xie Kai's question is becoming more and more acute and more direct.

The design capability of the engine is important, as is the base material.

"Xie Kai, as for the aspect of materials, we are not researching there? In addition, we are also ready to cooperate with the Institute of Materials of the Chinese Academy of Sciences and other units...... The new engine research and development is also ready to be jointly developed with 606, 624, 614 and other units...... "Zheng Yucheng saw that Xie Kai's problem embarrassed the two chief engineers, and hurriedly stood up to act as a good person.

Basic problems such as materials are faced by all scientific research teams in the whole country, and Zheng Yucheng does not want to invest more in them.

It's a bottomless pit.

When everyone heard Zheng Yucheng talk about the new engine project, they looked at Zheng Yucheng with a puzzled expression.

Xie Kai was angry in his heart and didn't want to pay attention to Zheng Yucheng.

Everyone's mentality, he is actually very clear, first make an emergency.

It is also such a mentality, not enough attention from above, not enough financial investment, and finally let the domestic engine get a breakthrough for decades.

"When designing, we must take into account the problem of materials, if not, find the materials research institute and let them do it. Turbofan-6 engine, let's set a small goal, thrust-to-weight ratio of 7 is qualified. Xie Kai looked at Jiang Chenyang and said seemingly casually.

As soon as these words came out, the entire conference room exploded.

"How is this possible! Not even a thrust-to-weight ratio of 6 has been reached. ”

"It's just that after so many years, it was not easy to complete the research, and it has not been completely finalized, and the technical standards have been improved......"

"Insufficient funds, insufficient experience, and poor technical foundation, it is not possible to make such a thing in a short period of time. ”

Jiang Chenyang didn't speak, and his face was not good-looking.

Why is Xie Kai pointing fingers here?

"The technical requirements I mentioned don't mean that the original thing, the engine that was researched before, has a thrust-to-weight ratio of less than 5.8, right? What is the use of making it out? Could it be that our fighter project will lower the standard and support the engine?" Xie Kai's tone was a little heavy. "Either the thrust-to-weight ratio is 7, as required, and the four engines of this batch are up to this level, or the project is abandoned. ”

Xie Kai's words stunned everyone.

Zheng Yucheng didn't know where his fire came from.

How did they know, Xie Kai had a big head when he thought of these, and the turbofan six was still continuing the previous technical standards, this kind of thing, it didn't have to be used by fighters, and the funds invested could be said to be in vain.

As for the Super Seven project use?

Super Seven is used for trainer aircraft, and the cost of Turbofan Six is somewhat high, and for fighter aircraft, the performance of Turbofan Six is insufficient.

"Comrade Xie Kai, now that the production of several new engines has to be completely adjusted, many tests have not been completed. Sun Hong frowned and said.

He thought that Xie Kai was looking for something awkward because of the cafeteria.

"The improved model of the engine is only being tested for components, and the whole engine loading test has not yet been carried out. If it is to be used in an airplane, it takes a lot of work......" Jiang Chenyang explained to Xie Kai.

He didn't question Xie Kai if he didn't understand the engine.

Their new design, the improved model of the turbofan-6 engine, has a thrust-to-weight ratio close to that proposed by Xie Kai.

The material problem is solved, the strength problem is solved, and the problem can be solved by increasing the temperature and airflow into the turbine disk.

Theoretically simple, a few words of the problem, but it requires breakthroughs in many fields such as design, materials, and manufacturing processes.

"Then use these four engines to do the whole machine test!" Xie Kai said without hesitation, "I said at the beginning that in the area of aero engines, our entire 404 will be at any cost! No matter how much money is used and how much time is spent, it must be smashed." I don't want us to have a new fighter designed and then go abroad to buy it with a smile on our faces because of the lack of engines at home......"

This is one aspect.

Aero engines must be invested desperately.

Xie Kai's fire is completely against the conservative behavior of Zheng Yucheng and others.

"Before purchasing their aero engines in the Soviet Union, we originally hoped to get a better AL-31 engine, which was not the most advanced for the Soviets, but they kept silent, even their RD-33 engine, without thrust, only 50 kN, thrust only 81.4 kN, fuel consumption rate of afterburner was 2.09, the theoretical thrust-to-weight ratio was 7.87, and the thrust-to-weight ratio in the delivery state was 6.62, it was such an engine, a price of 2.3 million US dollars!" Xie Kai's tone became more and more sad the more he spoke.

These data, if you only look at the thrust-to-weight ratio, there is no problem.

But if you look at the fuel consumption rate, you will know.

So the MiG-29 was rated as the king of short legs, one engine could not support the MiG-29 to the sky, two, the fuel consumption was too terrifying.

People don't know that the final purchase price of the RD-33 engine is only half of the $2.3 million, but they do know how difficult the negotiation process is.

Because there isn't.

It's even more because China can't make it.

If you can't get it, it's normal to be blackmailed.

"200 RD-33 engines, costing hundreds of millions of dollars, have already been bought, and the money has been given! Do we continue to do this?" Xie Kai's words silenced everyone.

No one would dare to clap their chests and come out and say we made a better engine ourselves.

If your strength is not as good as that of others, you have to bury your head in the backbone and grow your strength.

"So, we have to keep doing it, no matter how difficult it is. It doesn't matter if others understand it or not. I don't want our new model of fighter to be designed and wait for the engine, and I don't want to negotiate with foreign countries to purchase engines again!" Xie Kai was a little distressed.

Many times, he is aggrieved.

"Director Zheng, what is the budget invested by the headquarters for the engine?" Jiang Chenyang stood up and asked Zheng Yucheng with a solemn expression.