Chapter 1116 Big... big black fish?
Chang Haonan never expected that one day he would be so shocked by others that he could not even hold a cup steadily.
Fortunately, I had already drank more than half of the tea inside, so I didn’t get wet from it——
Chang Haonan had heard about it in his previous life. China did rely on the fifth and sixth generations of centrifuges. Imported equipment for a period of time.
So I am not too surprised about the research on advanced uranium enrichment equipment.
However, with the development of nuclear energy technology in the 21st century, the concentration requirements for nuclear fuel have actually become very loose.
Due to cost, safety and environmental protection considerations, the average abundance 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 more than 95%.
But as we all know, after China conducted its last nuclear test on July 29, 1996, the development and construction of its nuclear forces entered a relatively stable stage for a long time.
To put it bluntly, the size of the nuclear arsenal has not increased much.
On the one hand, the construction and maintenance costs of this thing are indeed too high. Limited military expenditures also require the development of conventional forces with more general uses.
On the other hand, China will only have a few dozen Dongfeng 5A missiles that can hit the main areas of the powerful enemy's homeland.
Not to mention the single warhead, the accuracy is also very sorry.
As for the rest...
The basic Dongfeng 31 is strictly a long-range projectile and can only hit a few targets.
Julang 1 is essentially close to Dongfeng 21, with a range of less than 3,000 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...
The range of the Tu-160s that were previously acquired is far enough, but the Air Force’s nuclear-related positions have just begun training and construction, and they have not had time to form combat effectiveness.
Not to mention the survivability of non-stealth aircraft...
In short, the nuclear delivery capability is extremely limited.
And the next real expansion! nuclear!
That was all before Chang Haonan was reborn.
Furthermore, people generally don’t call the raw materials used in nuclear bombs nuclear fuel.
Therefore, he even confirmed it again:
"Nuclear fuel?"
"Or high concentration?"
Facing Chang Haonan's reaction, the two people opposite were not surprised.
Obviously, he was not the first person to show such surprise.
“That’s right.”
Qu Liangsheng nodded:
“Of course, the entire plan is still in a very early stage... It’s not even pre-research. The new centrifuge we developed is only a pilot part of it. "
At this moment, Chang Haonan seemed to have turned a corner.
"So..."
He did not continue, but just stretched out his hand and made a slowly downward gesture.
There is almost only one situation where a nuclear reactor will use weapons-grade fuel.
It is a nuclear submarine.
Compared with nuclear-powered surface ships that can easily 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 reactor used by early nuclear submarines such as Ohio or Delta needs to be refueled, it must undergo a large-scale "disembowelment"
The cost is high and time-consuming. Said that the key is that it will inevitably strain the muscles and bones, which is detrimental to the safety of the operators and the submarine itself. Therefore, some new models of nuclear submarines simply consider having the reactor and the boat have the same lifespan when designing them, so that they do not need to do it twice during their entire service life.
The price is to use more abundant uranium fuel.
It stands to reason that this is a technology that will only be widely deployed on fourth-generation nuclear submarines such as Virginia/Borey.
In 2003, China's 09I and 09II are actually still between the first and second generations of technology.
But we have started laying out the most cutting-edge technology so early.
But then I thought about it, if I compare it with the aviation industry system, it seems very reasonable——
China’s pre-research on the fourth-generation fighter jets was actually being prepared before the third-generation fighter jets were put into service. .
Of course there is a factor in this that the reason for the rapid progress is that the starting point is very low and one can cross the river by feeling for the stones, but there is no doubt about the foresight and determination shown by the superiors.
“Ahem——”
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 need to pay too much attention. These, the new generation of centrifuges are indeed mainly developed for this purpose...but there are too many twists and turns in the middle. It is not directly related to the three of us, and it will not be affected by the confidentiality relationship. Your job.”
Although everyone’s business is somewhat confidential after reaching the level of academician, nuclear-related business is still at a completely different level.
That’s really how to isolate yourself from the world.
So Lu Yongxiang should think that Chang Haonan is worried about this:
"As far as the electromagnetic bearing-flexible rotor system itself is concerned, it is still an open project with many uses and is not limited to the military field... For example, in 1992, a large number of cracks were found on the rotor of Unit 6 of Shaoguan Power Plant..."
However, Chang Haonan was just out of curiosity and surprise. In fact, it was not as complicated as he thought. , so I just waved my hand to express my understanding.
"So... where has this research progressed now?"
In fact, he was basically ready to agree.
But before that, we have to understand the situation again.
“There are several key points that are currently being tackled. 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 It is the suppression of vibration at the same frequency in multiple critical speed zones of the flexible rotor."
Qu Liangsheng replied:
"But...except for the first item, only the latter two parts. It only requires some equipment support, and it will not affect the project you are currently working on..."
He was obviously following the general idea of "asking people to cooperate", and first said that he would not delay the other party's normal work. , just provide the help you can.
But Chang Haonan didn’t think so:
“No!”
He just slapped his thigh, and the fierce reaction shocked the other two people:
"We definitely hope to get more involved in such a significant project, so that it can be applied to a new generation of aviation engines and gas turbines in the future...Besides, there happen to be some parts that I am good at..."
“For example, the same-frequency vibration suppression that Academician Qu just mentioned, I think we can establish a dynamic model of the electromagnetic bearing-flexible rotor system and analyze the linear active disturbance rejection controller and the phase offset least mean square algorithm. Then try to find a way to solve the problem by finding a disturbance tracking compensation method based on the minimum mean square of phase offset..."
"..."
If it were left to ordinary technicians, they might not be able to keep up with Chang Haonan's ideas.
But the two people opposite are also experienced bosses after all, so they can naturally judge that what he said is indeed feasible.
In fact, this is one of the solutions they are trying.
Therefore, Lu Yongxiang, who had looked solemn just now, waiting for Chang Haonan's response, finally smiled:
"Look, Academician Chang, when will we hold a more formal technical seminar for the project team?"
Chang Haonan glanced at the perpetual calendar hanging next to him:
"Without further delay... I will return to Haojing in two days. It just so happens that the main research resources of the Aerospace Power Group are currently concentrated in Haojing and Shengjing, so if you two have time, why not come next Monday? How? ”
(End of this chapter)