Yang Weining smiled a little embarrassedly, the reason why he was so loud just now was mainly due to the habit of test pilots in his previous life. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

After all, if a new aircraft is in danger during the test flight, it is a matter of vital importance to human life, and he cannot afford not to pay attention to it.

Fortunately, Tu Kai is not the kind of person with a small belly, and he doesn't care about Yang Weining's accusations.

Later generations of the aviation industry had a good reputation for Tu Kai's evaluation, believing that he was sincere, sincere and generous, able to listen to the opinions of others, and maintained a high sensitivity to new technologies, which was also an important reason why he was rated as an academician of the Chinese Academy of Engineering.

Tu Kai said: "Xiao Yang, since this is the case, do you have any way to solve the problem of too high temperature in the rear fuselage?"

The scene was quiet again, and everyone focused on Yang Weining.

Many people showed a smile on their faces, it is not uncommon to be able to find out the problem, and more importantly, the ability to solve the problem, this strange young man just slapped everyone on the scene in the face, and some small-minded people are still waiting to see Yang Weining's joke.

Tu Kai didn't think about it so much at all, the reason why he asked this was that on the one hand, he hoped to find out and solve the design defects of the J-7II engine as soon as possible, and on the other hand, he also had the intention of taking the school Yang Weining.

Before, he only regarded Yang Weining as an outstanding computer genius, but Yang Weining's theoretical and practical skills in the field of aeronautical engineering further attracted Tu Kai's attention.

Such an outstanding compound talent is too rare in the aviation port, as long as Yang Weining can further prove his level, it is completely worthy of Rong Fei's focus on cultivating him.

Yang Weining smiled slightly and said: "This problem is still just my personal inference, and further test flight verification is needed. ”

"First, the surface of the flame barrel of the turbojet-7 engine is coated with heat-resistant paint to improve thermal stability, while preventing corrosion on the surface of the flame barrel and reducing the thermal radiation to the cylinder. Second, using the air film forced cooling technology, the cooling air enters the flame cylinder from the bleed air port and accelerates the flow along the inner surface of the flame cylinder, forming a layer of air film to protect the flame cylinder and enhance the cooling effect. Thirdly, the DC fuel injection rod of the split-circle and partial pressure fuel supply device is used to replace the original centrifugal nozzle, so that the fuel is distributed more evenly, the stable working range of the combustion chamber is expanded, the fuel combustion efficiency is improved, and the fuel consumption is reduced. Fourth, the afterburner installation edge material is changed to stainless steel with stronger heat resistance to solve the problem of excessive wall temperature of afterburner. Fifthly, the kerosene engine of the auxiliary power system was replaced with a gasoline engine to reduce the risk of fire in the fuselage. Sixth, add a handling casing at the first stage of low-pressure compressors. The casing consists of a casing and spoilers, the ends of which are embedded in the slots of the casing and form a number of slits inclined axially and radially. When the engine is working, the air extracted from the top of the rotor blades of the first-stage compressor enters the housing cavity through the slit, and then is discharged from the shell cavity through the slit to the inlet of the rotor blade blades of the first-stage compressor, which generates additional circulating airflow, which can inhibit the development of the surface layer of the casing and the blade surface, increase the airflow velocity at the inlet and reduce the angle of attack near the blade tip, thereby expanding the stable working margin of the low-pressure compressor......"

Yang Weining stated his views in an orderly manner, and the faces of everyone at the scene slowly changed from the previous solemnity to surprise, and even turned into shock in the end.

In the field of aeronautical engineering, empirical formulas are applied far more in practice than in theory.

The level of a person does not depend on which university he graduated from and how solid his foundation is, but more importantly, on the person's experience in the industry and the level of engineering application.

The suggestions just put forward by Yang Weining are not just to solve the problem of heat dissipation in the afterburner.

For example, the third sub-circle partial pressure fuel supply device instead of centrifugal nozzle, it solves the problem that the afterburner is easy to produce thrust pulsation in the high-altitude state, and causes the defect of the engine to stop in the air, and the gasoline engine is used instead of the kerosene engine as an auxiliary power unit, which solves the shortcomings such as unreliable engine restart in the air and long ground starting time, and the sixth article, the proposal to increase the handling of the casing, is completely groundbreaking program, if the new engine is designed according to this program, it can even ask the Air Force for a new model.

If an academician-level expert in the field of engines puts forward suggestions for improvement, everyone will not be too surprised, but such a young man has put forward so many improvement suggestions, and some can even solve the problems that have plagued the design team for a long time, it has to shock everyone.

As Yang Weining put forward his suggestions one by one, the smile on Tu Kai's face could no longer be hidden, and he found that he had once again underestimated Yang Weining's ability.

This kid is not only a genius, but also a demon!

Even if the chief designer of the turbojet-7 comes over, I'm afraid that I won't be able to think of so many highly operational improvement suggestions for a while.

Such a talent can come to 611 Institute and come to Rongfei, what a blessing.

"Xiao Liu, ...... quickly Quickly record these suggestions that Xiao Yang just made. ”

Tu Kai hurriedly said to the engineer surnamed Liu, who was completely stunned on the side.

"Oh, okay, butcher. ”

Yang Weining said most of the improvement plans for the turbojet-7 engine in later generations, and many of them were new technologies used in the turbojet-13 later.

These are all mature new technologies, except for a very small part of the improvement in the field of materials, most of them are design improvements that Rongfei's existing technology can do.

In this way, it can not only greatly increase the overhaul time and life of the turbojet-7, but also greatly reduce the failure rate of the turbojet-7 engine.

Later generations of the Air Force have always been prejudiced against single-engine fighters, and even the engine of the J-10 fighter has been delayed from using domestic Taihang, and the use of AL-31 imported from Russia has a lot to do with the J-7II's engine failure rate is too high and the flight risk is too large.

Now, Yang Weining's solutions can completely reduce the failure rate of the turbojet-7 to an acceptable level.

This is of great benefit to both domestic fighters and the research and development of domestic engines.

Tu Kai couldn't help but sigh: "Wei Ning, I only now believe that some people really have the talent to be born with, we old guys are already old, and in the future, our country's aviation industry will rely on young people like you to win the world." ”