I ask you to build tractors, but you build rockets?

Among the world's major nuclear fusion research facilities, the theoretically strongest one is ITER, which is led by international cooperation and aims to bring together the world's strongest forces to launch an attack on controllable nuclear fusion.

However, it goes without saying which countries the "international" refers to. China tried to join in, but found that it was being treated as a money bag, so it changed direction and began to support the domestically independent EAST project.

EAST started in 2003 and should be the world's most advanced and first-class controlled nuclear fusion test device until Lin Ju's crossing. The Academy of Sciences of Huizhou Province has announced that it will be commercially available in 2035.

No matter whether EAST can be passed through or not, as a rare advanced nuclear fusion research device with scientific content, it is not a disadvantage to be able to participate.

As for the particle accelerator, Lin Ju knows that after 2020, the country has proposed several large-scale particle accelerator plans, each of which surpasses the LHC, but he does not know why it has not started construction.

However, this at least shows that after the economy develops, the country will not reject the construction of such large-scale scientific facilities. As long as the time is right, it should be possible to implement it.

Lin Ju: "EAST is now the best controllable nuclear fusion device in the world. I think if we let Chenggong go over, we need to step up a bit.

Can you find theoretical results in this book that are not too shocking but have sufficient weight? "

Cheng Nankai: "..."

Ye Changsi: "Maybe there will be. In fact, without the assistance of experiments, this may be closer to conjecture, but it should be enough and it will take some time.

It doesn’t have to be a small process, it is enough to get some actual data when EAST is running. With these data, we can build a complete controllable nuclear fusion model based on future knowledge, and it will be easy to carry out work in the future. many. "

…

"The YF90 gas generator was successfully tested in Chang'an, and the chief engineer revealed that the prototype has entered the manufacturing stage."

Zhou Qingfeng saw the latest reprinted post and subconsciously wanted to reply, but when he touched the keyboard, he stopped abruptly and left the stool dejectedly.

He still remembered that it was an ordinary afternoon. He had not chatted with "Scenery All the Way" for two days, and he was looking at the clouds under the sunset and thinking wildly. Even exchange student Huang Xiaobin ignored the fact that her mother wanted to celebrate his birthday.

While Zhou Qingfeng was wandering in his thoughts, the dean and two people in gray formal suits walked into the classroom and took the junior high school student into the car.

At a young age, Zhou Qingfeng experienced for the first time the mysterious and elusive work style of the Security Bureau. After sitting on the interrogation chair in confusion, the old aunt opposite him broke his guard with just one sentence.

"Zhou Qingfeng, have you ever dated a person whose QQ nickname is 'Long Scenery'?"

Zhou Qingfeng nodded blankly.

"Then do you know that the person you were chatting with was an IAA spy and that he learned a lot of secrets from you?"

A document was placed in front of the stunned Zhou Qingfeng. He picked it up and looked at it without being handcuffed. The first thing that caught his eye was the words "Niu Aihua".

Cows love flowers? Cows love flowers? !

As the "Z God" who has been involved in aerospace and military forums for a long time, he naturally knows what "50W" is, and he quickly understood what he had done.

Zhou Qingfeng, who was struck by lightning, had no idea of ​​resistance, and the security bureau did not want to do anything to a junior high school student. They just wanted to give this brat a long memory.

They printed out all the chat records between Zhou Qingfeng and Niu Aihua, asked whether Zhou Qingfeng responded to each sentence personally, and asked him to write down his psychological activities at that time and sign after each sentence.

You must know that there are many ambiguous methods carefully thrown out by Niu Aihua in these chat records. Zhou Qingfeng did not dare to lie here at all, and had to follow the requirements of the Security Bureau.

When he finished writing the thick note, Zhou Qingfeng had already dug out two big holes in the thick sports insole.

But this was not the limit. The photos of Niu Aihua he secretly took were also shown and asked to elaborate on all the details of that day. It is hard to imagine how much psychological shadow it caused on a twelve-year-old child.

After being severely punished by the old man, Zhou Qingfeng has been deprived of his right to speak on the Internet. All posts by "Z God" have been deleted. From now on, he can only surf the Internet but cannot send any replies.

This alone was uncomfortable enough for Zhou Qingfeng, but what was even more uncomfortable was that he also found out that Niu Aihua was Huang Xiaobin's mother...

Zhou Qingfeng, who was desperate for love every day, sighed inappropriately for his age and continued to browse the forum posts.

Even when Xinyuan was grabbing the limelight, the space agency did not fall behind, and results began to pour out.

The gas generator of the 220-ton hydrogen-oxygen engine has been successfully manufactured. This is considered one of the core components of the engine, indicating that it is about to enter the prototype trial production stage.

However, because of the poor performance of YF77, Zhou Qingfeng does not think YF90 will succeed soon. On the contrary, he thinks YF135 has better prospects.

As a split-supercharged single-combustion chamber version of the YF130, there is even less news about the YF135 than the YF90. The Sixth Academy seemed to have forgotten about the YF135 after vigorously researching and successfully researching the YF130.

Of course this is not the case.

Chang'an, rocket engine manufacturing base.

One of the two workstations on the test bench was occupied by an engine of medium size. A few seconds after its combustion chamber began to emit white mist, a bright orange tail flame burst out from the nozzle. A series of Mach rings are produced.

Experienced staff know that the thrust generated by it is about 300 tons just based on the vibration under their feet, which should not be much different from the expected data.

What is being tested is naturally the space agency's next-generation reusable high-thrust rocket engine-YF135.

The 360-ton single combustion chamber liquid oxygen kerosene rocket engine is the reserve power for the new Long March 5 and Long March 9. It is a cheap and reliable reusable rocket power.

This is the first prototype used for ignition testing. Although the swing system and pipeline design cannot support reusability, at least the thrust is up to standard.

Although the technology of YF130 is mediocre, it has given the Sixth Institute a real giant rocket engine design and manufacturing capability. The progress of YF135 is much faster than expected, and increasing the combustion chamber pressure does not appear unreliable as imagined.

The engine went smoothly, but the development of the Long March 5 and Long March 10 that matched it ran into some trouble.

The problem lies in the rocket body. The first is the Long March 5. Its six-meter-diameter rocket body can fit seven YF135s. However, when the sample arrow was filled with water and rocked, it was found that the strength was not enough because of the high height, and the 2600 of seven YF135s. The thrust of 1,000 tons is too great, and the tremors caused may be quite large.

The Long March 9 is similar. The 11-meter-diameter rocket body still needs to be recovered. The take-off thrust is expected to exceed 10,000 tons. The First Academy has trial-produced part of the rocket body, but it also feels unreliable.

There are two solutions: strengthen the rocket body or increase the diameter.

Needless to say the former, if it is the latter, the diameter of the rocket body of the Long March 5 will be expanded from 6 meters to 7 meters, and the diameter of the rocket body of the Long March 9 will be expanded from 11 meters to 12 meters. This will naturally reduce the height of the rocket and also enhance the resistance. Vibration capability and technical problems are not big.

However, both options will increase the cost of the rocket. The diameter of the rocket body will be changed, and the production equipment will also have to be adjusted. The height of the Long March 5 first stage will also be reduced by about 20 meters, and the rocket body structure will almost have to be demolished and rebuilt.

Both are technically feasible, but the cost increase of both solutions is a headache.

Fortunately, the expected first flight date of Long March 5 is before 2020, so there is still some time for tangles.