interstellar involution king

Chapter 72 The Great Treasure Handed Down From Our Ancestors
"Passengers, please pay attention~~Passengers, please pay attention~~"

"The Egret spacecraft is about to start adjusting the attitude of the spacecraft, and the artificial gravity will be gradually canceled. For the safety of all passengers, please return to your seats and fasten your seat belts."

The spacecraft broadcast sounded in each cabin.

'Zi~'

With a soft sound, a beautiful image of a flight attendant appeared in the air in the business class. She smiled sweetly at Lin Yuan and the others: "Misters and ladies, please come and sit in the safety seat."

After Lin Yuan and his party sat on the chairs and fastened their seat belts, the flight attendant said again: "The spaceship will take 2 hours to complete the parking action. If you feel bored, you can open the dome of the cabin and watch the beautiful scenery of Moon Harbor."

The kitten immediately said: "I want to see ~ I want to see ~"

Lin Yuan said, "Then open it."

As soon as the voice fell, the milky white ceiling flashed and turned into a holographic screen, reflecting the scenery outside the cabin on it in real time.

At this time, the Egret spacecraft is about 8000 kilometers away from Yuegang City, and the spacecraft is approaching the past at a speed of 1.5KM per second.

Looking at the past from this perspective, you can just see the whole picture of Yuegang City.

The kitten glanced at it, and all its attention was attracted, and it couldn't help exclaiming "wow~": "It's so big~ so beautiful~"

Everyone also looked up one after another, looking at the magnificent space city on the screen.

Yuegang, one of the three major industrial centers in Nanli, is more than a thousand times the size of Gold Mine Island. Its structure is also quite complicated, and it has no similarity to the drum structure of Gold Mine Island.

Seen from a distance, Moon Harbor looks like a short-handled umbrella that has been blown over by the wind.

The overturned umbrella surface is the light energy collecting plate, with a diameter of more than 2400 kilometers, composed of countless light energy plate arrays.

The umbrella handle is composed of hollow pipes with a diameter of more than 200 meters and a length of more than 200 kilometers. The end of each pipe emits a light blue shimmer, which is the brilliance released by ultra-high-speed ions.

In fact, each pipe is a super-large jet engine, and there are as many as 500 such pipes.

The umbrella surface and umbrella handle constitute the basic framework of Yuegang.

And between the jet pipes, densely packed space buildings are built.

Inside the building complex, there are holes that are as complicated as a maze. In each hole, there are many small spots of light that are shuttling at high speed.

This is the main urban area of ​​Yuegang, with a three-dimensional structure, every space has been fully utilized.And those holes are the roads between cities.

From a distance, the main city looks like a gleaming beehive of giant macs.The dots of light that come in and out of the holes are spaceships.

The number of spaceships is countless, at a glance, there are at least hundreds of thousands of them, like a huge school of fish in the sea, or like bees flying around a hive.

The kitten looked at it for a while, and asked curiously: "Uncle Lin, why did Yuegang install so many, such long, and thick jet engines?"

Lin Yuan smiled and said, "To provide artificial gravity."

For things like gravity, it doesn't matter if it is weaker, but it must be there.This is not only to adapt to human living habits, but also to establish a stable basic order in the city.

With gravity, you won't suffocate if you stay in one place for a long time.Things are placed, so they won't flutter and bump.Or when the shit comes out, it won't float on the side of the butt and won't fall down.

The kitten couldn't figure it out even more: "But the book said that at present, human beings can only rely on centrifuges to create artificial gravity. Why didn't I see the space city spinning?"

She squinted her eyes and carefully looked at the main city of Yuegang, becoming more and more confused the more she looked.

"It's strange. Although the city is three-dimensional, it does have gravity, and the direction of gravity is consistent with the direction of the engine jet. But how does gravity come about?"

Seeing her confused and cute appearance, Lin Yuan couldn't help laughing out loud: "Didn't you see such a big centrifuge right in front of your eyes?"

"Where? Where?"

The kitten kept asking, her eyes were already big, but now they opened even wider, but she just didn't see anything like a giant centrifuge.

Lin Yuan stopped teasing her, and said with a smile, "Look, what about Yuegang this year, it revolves around the No. [-] star, right?"

"Correct."

"Then, its current orbital radius is about 0.5 astronomical units, and its orbital shape is very close to a perfect circle. You should also know the mass of Star 1, right?"

"Ah."

"Then you estimate the revolution speed of the port next month."

The kitten honestly began to count, and soon got the result.

Lin Yuan found Yuegang's real revolution speed from the star network: "Look, you made a mistake. The real speed is much faster than what you calculated."

"How is it possible?" The kitten was puzzled: "How can such a fast speed be a circular orbit? It should be an ellipse~ Otherwise, the gravity is not enough, and the space city will fly away."

Lin Yuan asked with a smile: "So, do you know the usefulness of those giant jet engines?"

The kitten was startled, and a few seconds later, she opened her mouth in shock: "Wow~~~ It really is a big, big centrifuge!"

This centrifuge takes Nanli No. [-] star as the center and its orbit as the radius. The gravitational force plus the engine thrust provide the centripetal force. Finally, a fairly stable, high-quality artificial gravity with consistent heights is realized on the Moon Harbor.

However, the curious baby kitten discovered a new problem.

"However, Moon Harbor is so big, and the engine is used to push it every moment to prevent it from flying away. Where did so much energy and propellant come from?"

This propulsion is going on all the time, and the thrust of the jet engine is also very, very large, and the energy and propellant consumed must be astronomical.

Even if it can be maintained, it is really a luxury.

Children's curiosity is the greatest motivation to acquire true knowledge, so Lin Yuan naturally will not be perfunctory.

He pointed to the light energy panel of Yuegang: "Look over there, is there a huge colorful halo in the space in front of the light energy panel?"

"Well, it's beautiful there."

"In that space, it looks like there is nothing, but in fact, it is filled with a powerful artificial magnetic field. This magnetic field is like a big funnel, with a diameter of more than 2 kilometers, and it is constantly It collects high-energy particles ejected from stars."

The kitten understood: "These high-energy particles are propellants? What about energy?"

This time Lin Yuan didn't need to answer.

The kitten quickly figured it out: "I see, the energy source is the light energy collected by the solar panel. So, this can only be done near the stars, right?"

Lin Yuan praised: "The kitten is really smart."

In fact, the huge amount of light energy collected by the solar panels with a diameter of more than 2400 kilometers not only provides Yuegang with high-quality artificial gravity, but also a large amount of free energy is one of the important reasons why Yuegang can become the industrial center of Nanli.

The kitten was yearning for it immediately: "Ah~~ Such a large solar panel array, I really want to go to the front to see what it looks like."

Zheng Wan on the side smiled and said, "Actually, it's nothing, it's just a bunch of concave mirrors."

The kitten was stunned: "Shouldn't the concave mirror be a photoelectric conversion board?"

Zheng Wan shook her head: "The efficiency of the photoelectric conversion board is too low and the cost is high. How can it be as easy to use as a mirror?"

If the mirror is broken, just replace it with a new one. There are no messy circuits, the cost is low, and maintenance is easy.

The kitten couldn't figure it out again: "But, according to the book, the conversion efficiency of photovoltaic panels can reach 72%, which is not low."

Zheng Wan understood this, and she said seriously: "72% is just the efficiency of the laboratory, and only 50% of mass production, and it cannot withstand the bombardment of ultra-high-energy particles, so it has to be replaced in 10 years. Think about it, the 2400-kilometer-diameter How much does it cost to replace a round board every ten years?"

The kitten can't figure it out.

Man'er on the side said: "According to my calculations, the material cost is 4.523254 trillion star crystals. The labor cost fluctuates too much, so it is difficult to calculate accurately."

The kitten was frightened: "4.5 trillion is a lot of money."

Lin Yuan smiled and said: "It's more than 4.5 trillion. Such a huge purchase will cause violent fluctuations in the market, and the price of photovoltaic panels will rise sharply. What's more, with the high-quality photovoltaic panels that humans reserve today, it may not be able to cover all The light energy collection plate of Moon Harbor."

Man'er made a quick calculation, nodded and said, "Brother Lin is right. According to estimates, the current inventory can only cover 0.922354% of the area."

The kitten asked again: "But how does the mirror collect light energy?"

Zheng Wan smiled and said: "This is simple, the concave lens focuses the light, and boils water."

"."

The kitten spread its hands, expressing that he did not understand.

"Lin Yuan, tell me. This kid is too good at asking questions, and I have a dry mouth to explain."

Zheng Wan put the responsibility of teaching the children back on Lin Yuan.

Lin Yuan drew a basic principle diagram on the brain and projected it into the air.

"You see, concentrated light boils water, turns it into high-temperature and high-pressure water vapor, drives a giant steam turbine power generation unit, and realizes the conversion from light energy to electric energy. If the scale is large enough and the design is reasonable enough, the conversion efficiency can reach 70% about."

It is not that there is no better way to utilize light energy, but because the method of boiling water is low in cost, easy to scale up, easy to maintain, and particularly stable and durable.

So, even after 5000 years, boiling water still dominates large-scale power generation.

The kitten watched for a long time, and a sense of disillusionment gradually appeared on his face.

"Hmm~~ I remember. The teacher said that this is the power generation technology of ancient humans. I didn't expect that it is still in use now."

Lin Yuan sighed secretly, and said in his heart: "Son, don't worry, this big ancestral treasure will be fine in another 2 years."

While the group was busy teaching the children, the Egret spacecraft finished berthing at the spaceport.

And as the mooring stabilizes, artificial gravity reappears.

This gravity comes from Yuegang, and its strength is not high, only about 0.2g, but it is completely enough.

The spacecraft announcement sounded: "Dear passengers, Moonport has arrived. Passengers are requested to leave their seats in an orderly manner and follow the guidance to the docking port."

At the same time, Lin Yuan received the message.

"Hello, Mr. Lin, I am the rail car of Shenxing Taxi Company. I have parked at No. 23 Business Port. Please get on the car within half an hour. I will try my best to provide you and your family with the safest and most comfortable car. rail car service."

But it was the high-end railcar that Lin Yuan reserved arrived.

He stood up: "Come on, let's find a hotel to rest first, and then start to get down to business."

(End of this chapter)