Mr. Zhang, graduated from Harbin Institute of Technology in 1965 with a major in engine design, and after graduation, he came to Shenyang Engine Design and Research Institute, which is the 606 Institute, and since then, he has formed an indissoluble bond with aero engines.

Mr. Zhang participated in the development and research of a number of engine models in the engine room, and made outstanding achievements in his own position.

Now, the project that Mr. Zhang participated in is naturally the 910 Project.

Thinking of this project, he can't help but feel embarrassed, this project from 1965 to complete the program demonstration, after three launches, five times to transfer the processing and production site, can be described as a hardship.

Now, the future of this project is beginning to be clouded again, because it is scheduled to install the J-9, but now, the J-9 is said to be about to be launched.

If there is no installed object, the engine will easily die, and there are too many such things.

What's more, the development of this engine is very difficult, and until now, there are countless failures to overcome, such as now, it is very difficult to start.

If an engine wants to run, the first thing is to start, if it is not easy to start, then how can it continue to test?

Now, hearing Wang Yang's words, Mr. Zhang couldn't help but sigh: "Yes, the project has been suspended for more than a month, today, it happens that a scientific research fund has been approved above, everyone has been holding back for more than a month, just waiting for now, with scientific research funds, of course we want to do it overnight, but now, this engine has been stopped for more than a month, and it is really not easy to restart!" ”

Later, Qin Feng also felt a little sour when he heard it, our scientific research is very difficult.

The development of an engine requires a huge amount of investment, and this is especially true for the third generation engine.

Qin Feng is familiar with foreign aviation magazines, and he is very clear about this, so to speak, the engine is burned with money.

Inside the engine, is a complex high-temperature and high-pressure turbulence environment, there is no mature formula can be set into, many times, rely on experiments, in the experiment is constantly adjusted, and finally achieve a suitable result, which of course burns money.

Take the current world's first level, the thrust-to-weight ratio of the F-100 engine has reached 8, the United States has invested 1.1 billion US dollars, even so, when the engine was developed, there were still reliability problems, and even led to a large area of F-15 grounding, becoming the queen of the hangar.

Even if it is simpler, such as the French M-53 engine, which is only a single-rotor engine, it also cost 699 million to develop. The British RB-199 engine was developed with $660 million, and Rolls-Royce also suffered financial problems due to the development of the RB-199.

It is conceivable that without strong capital investment, it is impossible for an engine to be developed without high capital investment.

And now? Turbofan-6 is a key engine project in China, it is also facing the problem of shortage of funds, paused for more than a month, before obtaining the approval of funds, get the funds, and the researchers are rotating in a continuous axis.

Qin Feng couldn't help but think of Song Lao again, thinking of Tu Lao, one by one aviation people, for the development of the country's aviation industry, they are all working hard!

The same is true when it comes to aero engines.

Having trouble starting your engine? Qin Feng remembered the puffs of black smoke that came out when he started just now, and couldn't help but say: "This engine is difficult to start, that is because the fuel injected inside the combustion chamber is not well mixed with the air, and if the atomization is not good, it will not be ignited, and it will not be ignited, so it will not be burned." ”

Hearing Qin Feng's words, Mr. Zhang couldn't help but widen his eyes, this young man was very eye-catching, he hadn't seen it before, and now, looking at the problem, he hit the nail on the head, looking for the problem, looking for the problem is too correct.

Everyone thinks so, but there is no good plan for how to improve.

"Qin Feng, the excellent test flight institute in our test flight institute is a regular graduate of Beihang University, with a professional background, which is different from us people." Wang Yang introduced: "There is a lot of ink in my stomach, and when I tested the J-8, he solved a lot of problems for us. ”

This is Wang Yang introducing Qin Feng to Mr. Zhang, and then, Wang Yang looked at Qin Feng again: "Since you are here, can you think of a way to solve this problem for us?" ”

The turbofan-6 engine is difficult to start, it is simply a stubborn disease, everyone has a headache, and it is often repeated many times before it can be started successfully, now, Qin Feng is a layman, what can he do?

There is a specialization in the art industry, and this sentence is not bad at all.

Qin Feng could only reason according to his own thoughts.

"Black smoke means that the fuel is not fully burned, if it is not fully burned, it means that the ratio of oxygen and fuel is not appropriate, either more or less, by the way, when did our combustion chamber start to inject fuel?"

"Of course, it was injected with fuel when it started." A person in the back said.

Needless to say? When the engine starts, can it be activated without injecting fuel?

"Can we try to be a few seconds late?" Qin Feng said: "For example, how about letting the starter drive the engine to turn first, and then injecting fuel when the engine reaches 3,000 rpm?" ”

When restarting the engine in the air, you can't be in a hurry, the first step is to let the air flow blow away all the excess fuel in the combustion chamber first, and then turn on the air start switch.

Otherwise, the engine will smoke and won't start, and now, can you try the same way?

The engine does not start, everyone from a professional point of view, thought of a lot of ways, but no one thought of such a simple way to deal with it, as long as the late injection of fuel on the line?

Mr. Zhang's eyes lit up: "Okay, let's try it!" ”

While talking here, the five-minute interval arrived, and Mr. Zhang shouted: "The second test run, start, don't connect the oil circuit first, let the engine turn up first!" ”

The starter made a sizzling sound of electric current, and the engine followed suit, making a roar of turbines, and the speed started from zero and soon climbed to 3,000 rpm.

"Spray oil, ignition!"

With Mr. Zhang's shout, the operator on one side pressed the switch, and the oil pump exerted its force, injecting fuel into the cylinder, and the spark plug followed the ignition, and then, I saw that there were streams of black smoke coming out of the back of the tail nozzle, and after the black smoke, the flames came out.

It's amazing, it's amazing!

"It seems that this is the reason, we can improve the startup process!" Mr. Zhang said excitedly: "Comrade Qin Feng, you have solved a big problem for us!" ”

"I'm a blind cat touching a dead mouse." Qin Feng scratched his head and said, "I don't know if it really works." ”

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