"Space Factory? That's going to cost a lot of money......" Liu Jianwei couldn't help but make up the picture of the space factory, if you put the factory in space, it would be the best, some high-end and cutting-edge industrial manufacturing has unparalleled advantages in the space environment.

The question is, how many trillions does it have to take? Don't even think about it if you don't have tens of trillions.

"Professor Liu, don't worry, I've saved a lot of money over the years, and if the budget is not enough, I can also bring in some investors." Luo Sheng said with a smile, not to mention how relaxed the tone was.

Heart: Isn't it just money, the poor are left with money~

Everyone: "......"

Everyone present was speechless.

Liu Jianwei once again tactically stroked the mirror: "If you build a space factory and complete the manufacturing in the orbit of the planet, this problem can be solved." ”

Not all of the manufacturing of the ladder cable is carried out in the space factory, but the last few processes are completed in space, and most of the process processes still need to be completed from the ground.

The cable is not made up of a single cable, but is made up of thousands of carbon nanotube filaments of equal length, and a single carbon nanofilament is as thick as 50% of a human hair.

Roughly, first of all, the single carbon nanotube filament material is manufactured and curled independently, bundled and sealed, and the mass of the single carbon nanotube is not much larger, and then transported to the space factory in the planetary orbit through the vehicle for the next round of processing, at this time, the main process is to combine a large number of single carbon nanotubes to form the final ladder cable.

These main processes greatly reduce the difficulty of manufacturing in the weightless space environment, and also improve the fault tolerance and efficiency, which is an advantage that no other location on the planet's surface has.

Luo Sheng looked at Liu Jianwei and asked, "How much natural graphite does it cost to make the raw materials for this rope?" ”

Liu Jianwei: "The consumption is not less than 4 million tons. ”

The raw material of the ladder cable is mainly graphite, the expensive is graphene, and the natural graphite is quite cheap, and the current market price is about 3,000 yuan/ton.

The demand for 5 million tons is about 15 billion yuan.

Moreover, Huaguo happens to be the country with the world's largest natural graphite reserves, about 55 million tons of reserves, and the global reserves are only 71 million tons, accounting for 77% of the world, but although the reserves are the first in the world, the development of the domestic graphite industry is not ideal, and it has been a raw material supplier in the industrial chain for a long time.

It is worth mentioning that graphite raw materials are cheap, but in the end, they are manufactured into carbon nanotubes through a complex process and become the final ladder cable, which will increase by more than 2,000 times when the R&D and transportation costs are comprehensively calculated.

Among them, the transportation cost is not cheap, accounting for a large proportion, even if the recyclable rocket greatly reduces the transportation cost of human beings to and from space, but it is also a relative data, and the absolute cost is not cheap, it is still an astronomical amount.

It also means that the value of this rope has reached 30 trillion yuan, or about 4.36 trillion US dollars.

From the base of the tower on the ground to the overall structure of the space station in outer space, this rope can be said to be the smallest module of the space structure, or even the most inconspicuous, but it is the most expensive module in the entire ladder structure.

The budget of the orbital space station compatible with the space factory is definitely enough to support 1~1.5 trillion US dollars, and the base of the sky tower on the ground is relatively cheaper, only a budget of 200 billion US dollars is needed.

However, this $4.36 trillion rope carries the mission of massive expansion of mankind to the entire solar system, and it is still very cost-effective to think about it.

"Mr. Luo, this is our result." Liu Jianwei took out an object similar to a handing over paper and gave it to Luo Sheng, who picked it up and took a look, found the thread and pulled it out and stretched it out about a foot, half thinner than a normal person's hair, and it was almost invisible to the naked eye.

There is a patch at the end of the thread, and you can pull it out by pinching the patch, otherwise you have to find it for a long time.

Liu Jianwei looked at the things in his hand and introduced: "This is a complete single carbon nanotube line, its length is about 5 kilometers, and the mass is only 21.211 grams. ”

Luo Sheng took the carbon nanofilament thread in his hand without saying a word, and after a while, he suddenly asked Liu Jianwei: "Professor Liu, if this achievement of yours is used by the state for military purposes, you will not object, right?" ”

"Military?" Liu Jianwei was stunned, and asked curiously: "This thing is not lethal, how can it be used in the military?" ”

Luo Sheng shook his head and said: "No, you are wrong, it can not only play an unparalleled strategic and tactical value in the military, but also has a terrifying lethality. Professor Liu, have you ever seen the science fiction "Three-Body Problem", which describes a plot called "Guzheng Project"? ”

Liu Jianwei shook his head, where does he have time to watch science fiction, a person who is obsessed with academic research every day and can't extricate himself, he can't wait to have 48 hours a day, and he can't be busy.

Luo Sheng said simply: "The plot of the so-called 'Guzheng Project' describes the use of ultra-high-strength nanofilament materials like this to connect the steel pillars on both sides of the Banama Canal to form a death harp, or death net bar. Evans, one of the leaders of the ETO, was ruthlessly cut when the cruise ship Doomsday passed through the canal...... Professor Liu, you have made this powerful nanowire. ”

After speaking, Luo Sheng looked at Liu Jianwei, who was stunned: "This ...... I never thought of an app like this..."

Luo Sheng played with the roll of carbon nanofilament in his hand, and said: "Large-scale mass production must be reported, I think it won't be long before the military will send someone over, with the military's vision is bound to see at a glance the huge military application value, so the first batch of nanowires manufactured is likely not to be used in the ladder cable first, but the military will come to order priority application and military." ”

It is important to know that the current international environment is becoming increasingly complex.

Hearing this, Liu Jianwei was silent for a moment before replying: "It is not necessarily a bad thing to be able to use it in national defense construction, I am not so pedantic, nor am I so fraternous about the world, first of all, I am a Chinese, and secondly, things are made by me, but I can't be the master of how to use them, anyway, I use your money to toss them, and you are in charge." ”

Luo Sheng was relieved when he heard him say this, and said, "Professor Liu, I can't be the master, this master can only be done by the will of the country." In this way, instead of the military coming to the door to disrupt the plan of the ladder project when the time comes, it is better to make a batch out now and send it directly to the military. ”

Liu Jianwei nodded: "It's okay, I'll arrange it here, but the budget may not be enough, you have to pay for it." ”

Luo Sheng said with a smile: "Money is never the biggest problem in my place, I will inject 100 billion yuan into Star Arrow International when I go back, you don't have to worry about the problem of money, your department can use it casually, I can manage enough." ”

At the end, Luo Sheng got up, picked up the roll of nanowires on the table by the way, took it in his hand and added: "I'll leave the matter here to you, I'll take this thing." ”

After a few more conversations, he left the room with the roll of carbon nanowires.

Out of the building, a business car at the door had been parked there and waited for a long time, and Luo Sheng took the vehicle back to the Science and Technology Complex Building.

At this moment, Luo Sheng, who was sitting in the back seat, was staring at the roll of carbon nanofilament in his hand.

The military will definitely attach great importance to this thing, and will apply it to the military 100 percent, and the "invisible net" composed of carbon nanowires can create a super-large area of lore traps, and it also has an incomparable advantage in blocking important strategic shipping lanes.

Luo Sheng took out his mobile phone: "Xiao Na, contact Yang Hongyi for me......"

……

(PS: Weak Seeking Votes Yin Yin ~~~)