After leaving the aircraft factory, Qin Guan stayed in Huating city for another day and exchanged the exchange. After everything was arranged properly, he went nonstop to 4430 factory. Up to now, the biggest obstacle restricting his aviation technology progress is the third generation turbofan!

After obtaining a batch of F110 engines from Eagle country, we can temporarily maintain our own production. However, it is not easy to obtain subsequent engines. We must rely on our own mature engine technology.

Over the past few years, what is the progress of our advanced third-generation turbofan?

"Mr. Qin, welcome to factory 4430." after learning of Qin Guan's arrival, old Wu hurried to meet him.

Now, old Wu's hair is all gray. His face is full of wrinkles and blood in his eyes. It's like a candle burning until the end. Seeing old Wu like this, Qin Guan's heart is touched. For the strength of the motherland, how many scientific research workers, like old Wu, travel day and night.

Qin Guan and Wu Lao are old acquaintances. Qin Guan has been involved in the technical negotiation of Spey engine since the beginning. After that, it is the improvement of Spey. Until now, the research and development of advanced turbofan engine.

There was a rumble behind him. When he heard the sound, Qin Guan understood what: "is our engine still on the bench?"

The first step of engine R & D is design, the second step is manufacturing, and the third step is test run. During the third test run, there will be countless twists and turns.

In fact, the last time Qin Guan came here, he started the test run. However, just a few minutes after starting, the engine blade broke. This major accident almost caused casualties.

And now? what's happening?

"Yes, a thousand hour long test run is being carried out," said Wu. When he said the number, his face was confident.

A thousand hours! There are twenty-four hours a day and seven or eight hundred hours a month, and their engines have been running continuously for more than a month!

The service life of previous engines, such as turbojet-7, was only 200 hours, while the design service life of the engine now produced by our side has reached 1000 hours. Of course, this is not the end.

After the long-term test run, the whole engine will be disassembled, and each blade will be checked to see how much life remains, so as to finally determine its life.

At the same time, it also shows that the current engine can work stably for a long time!

Wearing earmuffs, Qin Guan walked into the high-altitude test bench together. Now, it has all been carried out indoors. The flame sprayed by the engine is discharged to the outside through the pipeline to reduce the noise. On the high-altitude test bench, an engine is roaring and looking at it. Qin Guan seems to see the giant Dragon taking off.

Next to the camera, there is also a full set of data. These data can be directly transmitted to the gas Research Institute for synchronous analysis. Therefore, it is impossible to cheat. Moreover, with the character of old Wu, he absolutely disdains to cheat.

The equipment in a row is connected to the computers of Hanxin technology company. Data analysis is being carried out. Although it has been driving all the time, the fuel consumption and the temperature of various parts need real-time monitoring and analysis. Those young guys have grown up now.

Qin Guan watched it for a few minutes, but he couldn't see anything. After all, the engine was on so that laymen could only watch the excitement. So, Qin Guan came out. In the conference room, old Wu began to introduce Qin Guan.

"This long test run is the last time. After this experiment, we plan to dress the machine." old Wu said, "well, I'm afraid I have to ask you for help."

How to install?

Just think about the Taihang of later generations. Su 27 is used to test the three aunts on one side and Taihang on the other. Of course, our own side needs to call a male cat fighter to come over this test. However, the air force and Navy both regard the male cat as a baby. They need to coordinate. Qin Guan is the best to coordinate.

After it completes the installation and test flight, it also changes the male cat first. After all, the male cat has two engines. After flying on the male cat for a period of time, it will change the J-10 with one engine only after there is no problem.

Qin Guan nodded: "when installing the aircraft for test flight, we must also act according to the scientific law. We must do all the projects well, don't shirk it, and seriously look for the clues and causes of various faults."

Fortunately, this is our complete imitation of F110. What we have to overcome is mainly the links of materials, processing and assembly. People's design is already mature. Our greater challenge comes from turbofan-15

This is different from Taihang. At the beginning, Taihang wanted to integrate the advantages of F110 and Sanyi husband and connect them together. As a result, there was always a problem if they did not match.

"It seems that our fighter with its own heart is just around the corner," Qin Guan said. "Now, our team should also start preparing for the engine improvement project."

Old Wu is old. This project is his last project. In fact, he has reached the age of retirement, but he has been fighting in the front line. Now, when he heard that Qin Guan said he wanted to improve, he took it seriously and looked at the materials brought out by Qin Guan.

"This is to take out the core aircraft of F110 separately and add a large fan outside to form an aircraft engine with a thrust of about 100 kn. This is only an overall idea. For subsequent details, there are probably several vehicles that will be transported one after another."

The engine project of the airliner can't be pushed any more. Compared with the engine of this kind of fighter, the engine of the airliner is easier to. After all, the accelerator of the fighter needs to change constantly. The engine is hit by stress all the time, and the blades are easy to age. However, the accelerator of the airliner changes very little. What it needs is low fuel consumption and high service life. It can run through a long test run here, In fact, it has been able to meet the needs of the core aircraft of the aircraft engine, as long as a large fan is added outside.

"It's most suitable for the outside fan to be processed by 4460 factory." old Wu took it over and said seriously.

Qin Guan took the entire f404 engine production line to plant 4460. The diffusion connection superplastic forming equipment required for blade processing was also produced in plant 4460 after the running in of workers and equipment, and the yield was very high.

Qin Guan nodded: "it's all up to you to coordinate. Our Yunshi is waiting for this engine. At the same time, there is also a technical data for refitting a gas turbine."

When he took it out, Qin Guan hesitated for a moment. Would it be unbearable to give it all to old Wu?

"Don't worry, I promise to finish the task!" old Wu patted his chest, and his eyes again focused on the gas turbine plan in Qin Guan's hand.

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