Chapter 445: Sorry we are going to build an elevator in space!

The brainstorming team fell into an unprecedented fierce debate. Scientists divided into two groups, some of whom supported the space program, hoping to die with North America, until the overwhelming scientific research giant NASA.
The other part realized that the space program was too risky. It would cost all the scientific research power of the entire company and cost countless funds.
Luo Jia didn't make a stand. He listened to everyone's speech carefully, and quickly thought in his brain, analyzing everyone's opinions and ideas.
"The big brothers are unusual today. It's all midnight, and there is no sign of a meeting yet."
"I heard that there was a dispute over the space plan. I don't understand the specifics. It seems to be related to the future direction of the company. The atmosphere in the conference room can be tense. Many big men are rolling up their sleeves and their faces are flushed."
"You two whispered less and hurriedly delivered the supper. The big brothers are hungry, waiting to eat."
Not only the staff of the canteen talked about it, the entire Star Technology, and all its subsidiaries, were all looking forward to it, waiting for the headquarters to sound the clarion call for marching into space.
After all, in this team full of men's uprightness, who has no dream of stars and seas?
Want to develop space?
Nonsense, straight men have long wanted to go crazy, OK?
However, reason tells them that things may not be easy. The brainstorming group held a full day of meetings. No news came out from the conference room. Obviously something went wrong and the big brothers couldn't make up their minds.
It seemed as if a whole day of analysis and discussion had exhausted everyone's energy. After eating overnight, the conference room gradually became quiet.
Everyone set their sights on Luo Jia. After all, no matter how busy the brainstorming group analysis was, Luo Jia ultimately needed to make a decision.
To some extent, the brainstorming team is also Luo Jia's think tank, which is responsible for providing various opinions. Luo Jia will consider all the opinions and make a relatively objective and rational choice.
After clearing her throat, Luo Jia knew that she couldn't drag any longer, so she stood up and walked to the podium with a smile on her face as usual, then tapped the microphone, and tried whether the ink pen writing was consistent.
After doing this, Luo Jia Shen said: "I have heard everyone's thoughts and opinions. Now let me talk about mine."
"The main reason for such a large-scale dispute in space projects is that the input and output are not directly proportional. Wisdom is a rarer resource than money. The headquarters software department plus the hardware department, 220,000 engineers and scientists, have all invested in space. The plan, coupled with trillions of dollars in funding, is likely to end up with just a pair of footprints on the moon, not to mention we are not the first. "
After listening to Luo Jia's words, everyone couldn't help laughing. The first person to eat crabs was a warrior, but who would remember the second?
North America has already gone through the road of space. Now Star Technology has invested so much manpower and funds to follow the path that others have gone through. It is not worth the loss. If you spend energy and funds on other projects, it may be more valuable. It doesn't make sense to hang on a tree.
After a short pause, Luo Jia said immediately, "I fully understand your concerns, let us now think about it from another angle."
"Suppose there is a technology that can transport goods to space on a large scale at a price of no more than two thousand dollars per ton, or even lower, then is this technology worthwhile to develop at all costs?"
After listening to Luo Jia's words, everyone froze and couldn't believe their ears.
$ 2,000 per ton of freight from earth to space?
How is this possible?
"It costs only two thousand dollars per ton? Couldn't we build a space station !?"
"What's more, if the shipping cost is so low, colonizing the moon and colonizing Mars will all become reality!"
"Of course, we need to build a spaceship and plunder resources. The moon is a golden egg that surrounds the earth. The titanium metal contained in Moon Sea Basalt alone has at least 100 trillion tons, not to mention the large amount of helium in the lunar soil. 3. That is an important fuel for controlled fusion technology. "
"He 3 is well received! Now the way we get energy is Carmen Vortex Power Generation. However, Carmen Vortex Power Generation can only be used on the earth. Once it leaves the earth, it will fail. If we want the spaceship to fly and fly out of the solar system, Be sure to develop controlled fusion! "
Everyone was excited to discuss. In fact, the biggest obstacle to the road to the sea of ​​stars is not technology or feelings, but costs.
The weight of a large space station, or the colonial base, is tens of thousands of tons. You ca n’t count on the existing rocket technology and launch the base into space a little bit. It will wait until the year of the monkey.
Low-cost space launch technology will change the reality of cosmic development and make the development of the universe profitable.
Only the benefits are eternal. When the spaceship full of precious metals returns at the moment of full load, the road to the sea of ​​stars will truly become a great cause of sustainable development.
And what does humans rely on to develop space now?
feelings.
The North American Apollo plan, the Star Wars plan, and the Curiosity Mars rover plan. These plans are costly, not because there are no benefits, but because the benefits and costs are not proportional. It costs $ 1 trillion to gain $ 100 billion. child.
Luo Jia's idea is simple. Space projects cannot rely on feelings. They must have the potential to realize profitability in the future in order to continue the great cause.
Uh ~
With a big stroke, Luo Jia began to draw sketches on the whiteboard. It was a space elevator, also known as the existence of a space elevator.
At this moment, the conference room is silent, and thousands of thoughts are in everyone's mind. They can't help but think that history has finally come to this point. Is the legendary space elevator going to become a reality in its own hands?
I have to say that Luo Jiazhen has no artistic talent. In his description, the space elevator is like a toothpick inserted in an apple. The bottom is connected to the continent and the top is a large space station in geosynchronous orbit.
After the sketch was finished, Luo Jia said in a deep voice holding an ink pen: "Height, 36,000 kilometers, directly to the geosynchronous orbit. As the height of the elevator continues to rise, the internal gravity will gradually decrease. When the goods arrive at the terminal with the elevator , Its own speed will be sufficient to maintain a synchronous orbit around the earth, so the space station at the end of the synchronous orbit is in a state of complete weightlessness. "
"Before introducing the working principle of the space elevator, we must make clear the question: Is the space elevator a giant tower standing on the ground or a catenary hanging from the orbit?"
"Clarifying this issue is very important for our future work, because the giant tower is under pressure, and the orbital catenary is under tension. The two belong to different mechanical categories."
A slight pause, Luo Jia said seriously, "The answer is undoubtedly the latter. Because the critical pressure instability point is too low, the space elevator cannot bear its own weight. Our only option is to establish a space station in a geosynchronous orbit, and then A tube with ultimate tensile strength is suspended from the space station to connect the earth to the space station. "
"Now that we choose to put space elevators under tension rather than pressure, the next question comes, materials."
Uh ~
The red ink pen began to quickly write the derivation formula on the whiteboard. Let the internal lift of the space elevator, and the change functions of the cross-sectional area with distance be T (x) and A (x), respectively.
Newton's second law is then applied, dT = -pA (x) g (x) dx.
Among them, the equivalent acceleration g (x) is the sum of the vectors of gravity acceleration and centrifugal acceleration ...
About half an hour later, when the complicated derivation was over, the brainstorming team was surprised to find that the original super-strength carbon fiber had achieved the performance as an auxiliary material for the space elevator.
The Kamen vortex street power generation array, which is like a group of magic flurry, is made of super-strength carbon fiber. It has stood the test of time and strength and is trustworthy.
You have to ask why Carmen Vortex Power Array does not use stronger graphene materials. It is very simple. When researching Carmen Vortex Power Arrays, graphene materials have not been developed yet. Besides, the price of graphene materials is more expensive than carbon fiber. It's a bit overkill to make a power generation array.
Although graphene failed to devote itself to the great energy cause, this time, it can play its unique advantage in the space elevator project.
As the tensile strength required by the Space Elevator Program is really abnormal, graphene needs to be further optimized to create graphene nanotubes.
In this way, the material problem of the space elevator is solved. Graphene nanotubes for the skeleton, auxiliary materials and the elevator body are made of super-strength carbon fiber.
"Besides that, we also have a problem. The elevator has been climbing from the ground to an altitude of 36,000 kilometers. Obviously, it needs strong power. It is also a coincidence that we have something called an ultrasonic motor in our hands. No. But it's called Space Motor. "Luo Jia said with a smile.
After hearing this, the conference room exploded directly, and the scientists were so excited that they couldn't add any more, and they almost burst into tears.
That's how the sentence comes. There is technology to do whatever you want.
Unconsciously, the three key technologies for building a space elevator are already in the technology list of Xingchen Technology. Except for graphene nanotubes, other ones can be used directly.
Luo Jia reached out to signal everyone to be quiet ~ EbookFREE.me ~ Because of the crazy celebration just now, the meeting room was too hot at the moment. Luo Jia opened the window to let the cold wind of the early spring permeate and help everyone sober their overheated heads.
"Although we have the key technology to build a space elevator, we must clearly understand that this plan is still full of risks and uncertainties. For example, we need a launch vehicle with a cost and capacity no less than that of Musk's Super Falcon. "
"I am not referring to the heavy falcons that have been successfully launched many times in a row, not to the Falcon IX, but to Musk's next-generation rocket and the super falcon that is still being tested."
"With cheap large launch vehicles, we can send the space station into Earth orbit in batches, and then suspend a graphene nanotube from the orbit."
"At that time, the whole world thought that we were launching rockets. In fact, we were launching elevators."
"The whole world thinks that we are building a space station. In fact, we are building an elevator."
"The whole world thinks that we have accepted Musk's challenge to fight his StarChain plan. Actually, go and the StarChain plan! We want the whole space!"