The military-industrial scientific research system of the academic master.

Chapter 1116 Big... big black fish?

Chang Haonan never imagined that one day he would be frightened by others to the point that he couldn't even hold a cup steadily.

Fortunately, I had already drunk more than half of the tea, so I didn't get wet.

Chang Haonan had heard about this in his previous life that China did rely on imported equipment for the fifth and sixth generations of centrifuges for a period of time.

So the research on advanced uranium enrichment equipment is not too surprising.

However, as nuclear energy technology has developed into the 21st century, the requirements for nuclear fuel concentration have actually been very relaxed.

For cost, safety and environmental considerations, the average enrichment of fuel rods used in nuclear power plants is generally between 2% and 5%.

Even if it is higher, it will basically not exceed 10%.

It definitely has nothing to do with “high concentration”.

Generally, only weapons-grade enriched uranium can reach 90% or even above 95%.

But as we all know, after China conducted its last nuclear test on July 96, 7, the development and construction of its nuclear power entered a relatively long period of stability.

To put it bluntly, the size of the nuclear arsenal has not increased much.

On the one hand, the cost of building and maintaining this thing is indeed too high, and limited military funds are also needed to develop conventional forces with more general uses.

On the other hand, China currently only has a few dozen Dongfeng 5A missiles that can hit the main areas of the enemy's homeland.

Not to mention the single warhead, the accuracy is also very poor.

As for the rest…

The basic DF-31 is strictly speaking just a long-range missile that can only hit a few targets.

The JL-1 is essentially close to the DF-21, with a range of less than 3000 kilometers, and the performance of the 09II nuclear submarine is not enough to break through the island chain and enter the launch position, so it can only be regarded as solving the problem of whether there is a problem or not...

The few Tu-160s that were brought back previously had a long range, but the Air Force's nuclear-related positions had just begun training and construction, and there was no time to form combat effectiveness.

Besides, the survivability of non-stealth aircraft...

In short, the nuclear delivery capability is extremely limited.

And the next real expansion!

Those were all things that happened before Chang Haonan was reborn.

Besides, people generally don’t call the raw materials used in nuclear bombs nuclear fuel.

Therefore, he even confirmed it again:

"Nuclear fuel?"

"Or a high concentration?"

The two people opposite were not surprised by Chang Haonan's reaction.

Obviously, this was not the first person to express such surprise.

"Yes."

Qu Liangsheng nodded:

"Of course, the entire project is still in a very early stage... It's not even a preliminary study. The new centrifuge we developed is just a pilot part of it."

At this moment, Chang Haonan seemed to have come to his senses.

"so it is……"

He didn't continue speaking, but just stretched out his hand and made a slowly downward gesture.

There is almost only one situation in which a nuclear reactor would use fuel at weapons-grade concentrations.

It's a nuclear submarine.

Compared with nuclear-powered surface ships that weigh tens of thousands of tons, the design of nuclear submarines is obviously much more compact, and it is impossible to reserve enough space for refueling operations.

Therefore, if the low-concentration reactors used in early nuclear submarines such as Ohio or Delta need to be refueled, they must undergo a large-scale "disembowelment".

Not only is it costly and time-consuming, the key is that it is inevitable to cause damage, which is very detrimental to the safety of both the operator and the submarine itself.

Therefore, some new models of nuclear submarines simply consider that the reactor and the submarine should have the same lifespan during design, so that there is no need to go through the same process twice throughout their service life.

The price is the use of uranium fuel with a higher enrichment level.

In theory, this is a technology that will be widely deployed on fourth-generation nuclear submarines such as Virginia/Borey.

At this time in 2003, China's 09I and 09II are actually still between the first and second generation of technology.

But they have started to lay out the most cutting-edge technology so early.

But on second thought, if we compare it with the aviation industry system, it seems very reasonable.

China's preliminary research on the fourth-generation fighter jets was actually prepared before the third-generation fighter jets entered service.

Of course, the rapid progress is due to the low starting point, which allows us to cross the river by feeling the stones, but the foresight and determination shown by the superiors are unquestionable.

"Cough-cough-"

Qu Liangsheng cleared his throat:

"It should be said... including but not limited to..."

At this time, Academician Lu, who had not spoken for a while, continued to explain:

"Academician Chang, you don't have to worry too much about this. The new generation of centrifuges is indeed developed mainly for this purpose... But there are too many detours in the middle. It can't be considered a direct connection between the three of us, and it won't affect your job due to confidentiality."

Although everyone's business is more or less confidential when they reach the level of academician, nuclear-related business is ultimately on a completely different level.

That really isolates you from the world.

So Lu Yongxiang probably thought that Chang Haonan was worried about this:

"As for the electromagnetic bearing-flexible rotor system itself, it is still an open project with many uses, not limited to the military field... For example, in 92, a large number of cracks were found on the rotor of Unit 6 of the Shaoguan Power Plant..."

However, Chang Haonan was just curious and surprised, and didn't think it was that complicated, so he just waved his hand to show that he understood.

"So...what stage has this research progressed to now?"

In fact, he was basically ready to agree.

But before that, I have to understand the situation a little more.

"There are several key areas that we are currently working on. One is the design of the electromagnetic bearing controller... Of course, Academician Chang, you may have already achieved some results. The second is the mathematical model and dynamic characteristics analysis of the cracked rotor system. The third is the suppression of the same-frequency vibration in multiple critical speed zones of the flexible rotor."

Qu Liangsheng replied:

"However... apart from the first item, the remaining two parts only require some equipment support and will not affect your current project..."

He was obviously still following the general idea of ​​"asking for cooperation". First of all, he said that he would not delay the other party's normal work and would just provide help within his ability.

But Chang Haonan didn't think so:

"No!"

He slapped his thigh, and his violent reaction startled the other two people:

"We definitely hope to participate more deeply in such a significant project, so that it can be applied to the new generation of aircraft engines and gas turbines in the future... Besides, there are some parts that I am good at..."

"For example, the same-frequency vibration suppression that Academician Qu just mentioned, I think it can be solved by establishing a dynamic model of the electromagnetic bearing-flexible rotor system, analyzing the linear anti-disturbance controller and the phase shift minimum mean square algorithm, and then finding a disturbance tracking compensation method based on the phase shift minimum mean square..."

"..."

If it were an ordinary technician, he might not be able to keep up with Chang Haonan's ideas.

But the two people on the opposite side were experienced bosses after all, so they could naturally judge that what he said was indeed feasible.

In fact, this is one of the solutions they are trying.

Therefore, Lu Yongxiang, who had just looked solemn and waited for Chang Haonan's response, finally smiled:

"Then Academician Chang, when do you think we can hold a more formal technical seminar for the project team?"

Chang Haonan glanced at the perpetual calendar hanging next to him:

"There is no time to lose... I will be back in Gaojing in two days. It just so happens that the main research resources of the Aviation Power Group are currently concentrated in Gaojing and Shengjing. So if your time permits, how about next Monday?"