Chapter 2588

The research and development of aeroengine is divided into many stages. Of course, the first stage is design. The design, R & D and matching of various compressors will be put on the test bench after they are saved.

If the matching is not good when designing and saving it for the test bench, there will be a lot of problems, such as the mismatch between low pressure and high pressure. The test run will be quite difficult. The original turbofan 6 was like this. It was on the test bench for more than ten years and finally got off the horse. Apart from others, the engine even struggled to start, and the accelerator can't change suddenly after starting, Otherwise, the engine will definitely surge, or even the fan will break. Such an engine cannot have the conditions for installation at all.

If these problems are solved, it is a permanent test run, that is, to let the engine run continuously on the test bench. The time is different, some are 100 hours and some are 300 hours. At that time, our own turbofan 10 was the most fully done, which is a 1000 hour permanent test run, which is almost to keep a self-produced engine running for a month.

After completing this experiment, the engine shall be disassembled to see if there are fatigue cracks in various internal structures.

After the inspection, there is no problem, which does not mean that the machine can be installed directly. Then, several other safety performances have to be verified. For example, entering rain, entering dust particles, hitting birds, etc. When these tests are completed, they can finally be installed on the plane.

Loading an aircraft is not a direct delivery. It also needs to be tested on the aircraft constantly to verify whether the engine works normally under various working conditions and whether there will be problems. The engine can't shirk the responsibility to the aircraft. For example, my engine can't change the throttle so quickly and should be treated gently.

Pilots must not be careful to serve the engine. Fighters are born for combat, not civil airliners.

The installation and test flight of the engine will take at least two or three years. In this way, the running time of the aircraft engine will accumulate to thousands or even tens of thousands of hours after the whole test.

Aeroengine is such a long and tortuous process. Even if it is formally finalized and equipped, it has not stopped. It has to continue to track and solve problems when they encounter problems. When it is almost done, it is time to change the funds in the medium term.

Therefore, the completion of the endurance test run is equivalent to the completion of the second step of the long march. Although it is the second step, it is also very important, because next, our fourth generation aircraft can match this kind of engine!

In the previous research and development of aircraft engines, it was not so long because the previous engines were all used. For example, our own turbofan 10 is almost a comprehensive copy of F110, and it is still a mature model. This engine has been verified for tens of thousands of hours and has completed matching.

In fact, the current turbofan 15 is not newly developed by himself. It can be said that Qin Guan has found all the materials of F119 for this project.

However, the research team is definitely not copying this design. According to this information, the scientific research team has developed and matched level by level. It can be said that the whole process has been followed. At the same time, another most important thing is that a lot of new materials have been developed for this engine.

Aeroengines rely heavily on materials science. Without the progress of materials, it is impossible to have advanced engines. For this engine with a thrust to weight ratio of 10, the front temperature of the turbine is two Baidu higher than that of the turbofan. Of course, new materials are needed to support it.

Aeroengine is the crown of the whole industry. This sentence is definitely not simple, but a real industrial crystallization.

When Qin Guan came to the 6624 Institute, it was already evening.

When he came here, he not only saw Kang Lao, the person in charge of turbofan-15, but also saw many other old faces, including song Lao, Lu Lao and Wu Lao. They all gathered here.

Turbofan 10 is the last project under the command of Mr. Wu. He is now old and has left the front line of scientific research to teach in universities and continue to give full play to his waste heat. However, as a veteran of the aviation power industry in the Han Dynasty, I have to follow this important happy event.

Kang Zong is the head of 6624 Institute. This project is developed by a collection of national aviation power industry institutions. Therefore, 6624 institute takes the lead. After all, 6624 Institute is a gas turbine Research Institute, which is originally a comprehensive organization.

Old song and old Lu are waiting to match the fighters.

"President Qin, I'm glad you can come." seeing the arrival of Qin Guan, everyone rushed up to Qin Guan and shook hands with Qin Guan. For them, Qin Guan is the backbone. Without Qin Guan, there would be no such achievements.

In particular, the R & D of an engine costs a lot of money, and the R & D of the Tenth Five-Year Plan of turbofan is also burning money. Among them, the North Industrial Company continues to provide funds, coupled with the national funding, it can be regarded as today's achievements. If only relying on the national funding, the project will be at least five years late.

"Well, the engine has already been disassembled?" Qin Guan asked.

After a permanent test run, the engine was about to be disassembled for decomposition and research. Qin Guan put on his white coat, passed through the dust-free channel and entered the working area with everyone.

After the outside is disassembled, you can see the blade structure inside. Although it has been permanently tested, the blades inside are still quite new and bright with metallic luster.

"Turbine blades are the most challenging part in the research and development of this engine," said Kang. "We have made great efforts to develop a new process and completed the cooling design of this blade. The turbine blades are disassembled here."

When Qin Guan looked at the past, he was stunned. At this time, there was a Xiong Guoren who was holding a magnifying glass and carefully observing the leaves.

Fedotov sergevich Tumanski? Qin Guan could scan the name with his mental point system. When he saw the name, he was even more surprised.

Because Qin Guan knew the composition of Xiong people's surnames. The last is the family surname, the middle is the father's name, and the first is his own name.

Who is the designer's father? Sergei konstantinovich Tumanski! That is, the head of the famous alliance engine group has led the research and development of models since the engine of MIG 25!

Now here are all the R & D teams of turbofan-15. How can there be such a figure?