The Air Force started with the repair of fighters

Chapter 262

The research and development requirements of the DF-17 hypersonic missile are that it needs to have the characteristics of all-weather, unsupported, strong penetration and so on, can be several times the speed of sound for evasion action, can switch attack targets during flight, break through the anti-missile interception system, and carry out precision strikes on medium and short-range targets.

At present, the development of the DF-17, in essence, has come to an end.

Some time ago, Li Rui personally led all R&D personnel to test the aerodynamic performance of the DF-17 testing machine in the shock wave wind tunnel.

You know, the shock wave wind tunnel currently built by Longguo can completely blow out Mach 5-9 simulated winds, and the temperature can reach about 3,000 degrees Celsius, completely simulating the harsh environment experienced by warheads in hypersonic flight.

This was not the DF-17’s first shock wind tunnel test, but the test failed and did not meet the expectations they had envisioned.

The harsh environment that the warhead endures during hypersonic flight, the material of the engine obviously cannot withstand it.

Of course, the failure of the shock tunnel test this time is not only a problem with the hypersonic ramjet engine, but also other problems.

However, just the material aspect has already given Li Rui and them a headache.

They have changed the material again and again in the test, constantly increasing the hardness of the engine, so that the engine can withstand the effects of harsh environments.

This time, they really reached a dead end.

Li Rui’s explanation was very fast, almost half an hour, and he was almost talked.

Xiao Yun dragged his chin with his hand and was thinking about a problem.

“Deputy Chief Engineer Li, I have a question!” Xiao Yun took the initiative to stand up and asked, “I want to know if the problem of the hypersonic ramjet engine used in our DF-17 lies in the strength and heat resistance of the turbine blades?” ”

He was most concerned about this issue.

Generally speaking, the research institutes of the Longguo Military Region should be able to communicate with each other, but perhaps because of the different research and development projects, after some new materials are developed, they have not really reached the level of interoperability.

During the development of the J-20, the problem was the heat resistance of the turbine blades.

Now, in the development of the DF-17, the same problem, Xiao Yun feels, this key point, seems to be the same.

“Chief Engineer Xiao is right, it is true that the strength and heat resistance of the turbine blades cannot meet the requirements of hypersonic speed, so in the test of the shock wave wind tunnel, it will fail again!”

Li Rui did not expect that he had just finished talking about the problems he encountered, and Xiao Yun could actually accurately point out the key points of the problem.

He now really believes that Xiao Yun is a person who really has skills.

“Since Chief Engineer Xiao directly pointed out the problems existing in the turbine blades, I wonder if Chief Engineer Xiao has a solution?”

At this time, Li Rui’s gaze towards Xiao Yun was full of expectation.

There are so many researchers, but they have studied countless times and thought of countless methods, but all kinds of materials cannot meet their requirements.

You know, the difference is a thousand miles, and there is no room for perfunctory in this issue.

“It’s very simple, in fact, the problem of insufficient heat resistance and strength of turbine blades, the Southeast Military Region Research Institute has solved this problem and completely overcome this problem, but your side has not yet received news.”

Xiao Yun smiled, this question is really simpler.

“The palladium element and iridium element in the platinum group elements are fused, and 0.1% of technetium element is added to it, and then they are added to the nickel-based alloy, the melting point of palladium and iridium can have an impact on the nickel-based alloy at the same time and enhance the heat resistance of the nickel-based alloy!”

This has been verified.

After Xiao Yun’s voice fell, the entire conference room fell silent.

No one spoke, and everyone fell into deep thought.

At this moment, even the sound of dropping a needle on the floor in the quiet of the conference room ensures that it can be heard clearly.

After a long time, Chen Kang first “haha” laughed.

He did not expect that Xiao Yun had just arrived at the DF-17 R&D base and solved a difficult problem. His own decision, sure enough, was not wrong.

He believes that as long as Xiao Yun is there, the DF-17 will soon be completely developed.

In fact, the research and development of today’s DF-17 has reached the final stage, and there is no problem in the general direction, that is, in each shock wave wind tunnel test, some problems are found, and then these problems must be overcome.

The real DF-17 hypersonic missile must be perfect and not have the slightest flaw.

But if there are minor problems, it means that their research and development is not over, and the DF-17 cannot be officially used in the national defense military.

“It turns out that it can still be like this, I will contact the Research Institute of the Southeast Military Region!”

Li Rui couldn’t sit still, he just thought that the Southeast Military Region Research Institute had overcome the problem of heat resistance and strength of turbine blades, and their side was still having a headache because of this problem, and they were very uncomfortable.

He now almost can’t wait to rush directly to the Southeast Military District Research Institute to get the new turbine blades to install on their hypersonic ramjet engines.

After dropping this sentence, Li Rui left the conference room in a frenzy.

The others looked at each other, and then looked at Xiao Yun in unison.

They all have an idea, that is, sure enough, young people are heroes, these people, old!

“Okay, it’s almost time for dinner, I’ll take Xiao Yun to the dormitory to sort out my luggage first, and then go over to eat.”

“It’s late, Xiao Yun and I will go directly to see the testing machine, and you will be together.”

“We have been facing the testing machine for too long, and we can no longer see any problems, but Xiao Yun is different, he saw the DF-17 testing machine for the first time, maybe he can see other problems!”

Glancing at the time, Chen Kang said to everyone seriously, and by the way, he also made arrangements for the next trip.

Touching his stomach, which had begun to “coo”, Xiao Yun sighed with emotion, and finally was able to eat well.

He was brought directly by Chen Kang in the morning, and he really didn’t eat breakfast.

If he hadn’t been able to bear to interrupt Chen Kang’s excited look, he would have proposed to eat.

After all, no matter what, you have to eat enough to be able to work! It’s really unreasonable to let people work hungry.

The dormitory of the DF-17 R&D base is also underground.

These R&D personnel, at the beginning of the project, have to stay here until the project is completely over, and then they can leave here and go home.