At this moment, the last obstacle to building a chemical-fueled spacecraft has been resolved. After hearing about the specific process of solving the problem of high-performance special steel, Zhao Changxing felt a little bit amused.
Of course he would not interfere in these matters. However, he still silently blessed Hu Ming from the bottom of his heart.
After solving this problem, the engineering office immediately started specific equipment research and development. It is expected that the first spacecraft will be built in just a few months.
During this period, the second phase of the Human City project was also progressing steadily. Zhao Changxing doesn't pay much attention to things like natural landscapes and residents' living conditions. What caught his attention the most were two special buildings.
These are two magnificent buildings with 60 floors and 200 meters high.
Their tops are directly connected to the "sky" of the human city, and their bottoms are more than 170 meters underground. Excluding the area occupied by the building itself and some public areas, the average usable area per floor is as high as 25,000 square meters.
60 floors, a total area of 1.5 million square meters. The two buildings have a total area of 3 million square meters.
Of these two buildings, one is a dedicated planting building, and the other is a mixed building for planting, livestock and aquatic products.
Yes, Zhao Changxing made a big move. The research conclusions of Earth Age experts told him that the more dispersed it is, the harder it is to manage and the lower the efficiency. On the contrary, the more concentrated it is, the higher the efficiency will be. Zhao Changxing directly gathered all the food, meat, aquatic products and other needs together and put them all into the human market.
These two buildings can produce nearly 10,000 tons of wheat, 12,000 tons of rice, and countless vegetables, fruits, cotton, soybeans, corn, oil crops, sugar beets, etc. every year. Not only can it fully meet the current food and feed needs, but it can also greatly meet a considerable part of industrial needs.
The same is true for the livestock and fishery building. Not only can it meet all people's meat needs, but the leather, hair, etc. produced can also be used for industrial purposes.
In particular, they are highly automated. Two such magnificent buildings only require less than 50 people to maintain operation.
With these two buildings, Humanity City is truly the center of humanity.
Zhao Changxing invested a lot of energy in this matter and almost always followed its progress. It is of too great significance to the entire human civilization and cannot be taken lightly. It wasn't until its main structure was completed and only the interior needed "decoration" that he turned his attention to other things.
At this moment, the first chemical fuel spacecraft was finally built after having high-performance special steel.
The first test machine has a total height of about 4 meters and a diameter of about 6 meters. Its shape is roughly the same as a straw hat - the upper cylindrical space is the cargo compartment, and the lower brim is where the engine, propeller and fuel tank are located. .
There is no manual operating console inside, but full remote control. There is no dedicated cabin or life support system. Of course, if people need it, they can also put on spacesuits and stay directly in the warehouse, or they can also fly into space.
It uses methane and liquid oxygen as fuel - liquid oxygen, of course, needless to say, oxygen is indispensable no matter what fuel is used. The reason why methane was chosen is because there are extremely large methane reserves on Sedna.
Tolin can produce huge amounts of methane through simple processing. And Thorin is everywhere on Sedna.
Full of fuel, it can transport about 15 tons of materials into space each time it is launched, and then the remaining fuel will land for reuse.
Of course, this is only on Sedna. If it were on earth, even if this thing wasn't loaded with cargo, it would fly a thousand or two kilometers into the sky and then fall down.
Under Zhao Changxing's gaze, the Director of the Industry Department nervously pressed the start button. In an instant, bright fire light erupted from under the "brim", propelling it to fly unsteadily into the sky.
The speed was slow at first, but soon began to accelerate until it disappeared from people's eyes.
Its running trajectory is still displayed on the display screen in front of it. The people on duty aboard the Fire spacecraft are also telemetry-monitoring its traces.
Under the control of the preset program and people's command, it took more than ten minutes to complete the acceleration and deceleration process, and finally successfully arrived at the Spark spacecraft, successfully delivering today's supplies - 1 ton of flour, 1 Tons of rice, 3 tons of vegetables and 100 kilograms of meat were delivered to the children.
After that, it left the Spark spacecraft, began to slow down and land, and finally landed near the launch point. But...it fell at an angle.
It hit the ground hard, and the whole body was flattened.
Cold sweat immediately broke out on the face of the Director of Industry. Zhao Changxing was very happy. He not only patted him on the shoulder, but also praised loudly: "You did a good job for successfully landing on the first test flight! It's just a few minor problems. Just solve them. Come on, try to get it out as soon as possible." Mature models are coming!”
"Yes Yes."
The Director of Industry wiped away the cold sweat and forced a smile on his face.
Since then, research and development work has continued. After the second, third, and sixth test flights, and after two years of "decoration" work inside the two buildings in the human city, a mature chemical-fueled spacecraft was finally built.
Now it was out of control. In a short period of time, ten of this type of aircraft, which Zhao Changxing personally named "Flame", were built.
The first batch of building materials is already ready to go. Relevant space workers have also been trained. As a result, the expansion project of the Spark spacecraft officially began.
If it operates 24 hours a day, excluding maintenance time, a Flame transport ship can make two trips to and from the human industrial zone of Sedna and the Spark spacecraft on average. On average, about 13 tons of materials can be transported in one trip. On average, 260 tons of materials can be transported in one day. The materials needed to build a new circle for the Spark spacecraft that can accommodate 700 minors can be transported in less than two years.
Of course, this is just the early days. The Flame transport ship is still under construction, and human transportation capacity is also increasing rapidly.
Coupled with transportation and specific construction, the first newly added circle was successfully completed two years later.
During this process, 4 astronauts died due to accidents. Although they had long known that this kind of thing was inevitable, people's hearts, including Zhao Changxing's, were still filled with sadness.
Zhao Changxing personally hosted a memorial service for them and awarded them the Medal of Honor. Their names will also be recorded in the history books of mankind for future generations to pass on from generation to generation.
At this time, the two buildings in the human city were finally completed. As a result, huge amounts of food began to be produced continuously. With enough food as a backing, the prohibition on alcohol that had been enforced for more than a hundred years was finally relaxed.
After a series of prohibitions such as no drinking during working hours and no drinking in public places, commercial wine finally began to be sold and was warmly welcomed by people.
In fact, from a rational point of view, Zhao Changxing was unwilling to let this thing appear. After all, drinking and causing trouble is not an empty talk. But it’s still the same sentence, people are people, not tools. It is impossible to expect people to maintain mental stability without adequate entertainment.
Prohibition of alcohol has never been successful in the entire history of mankind. Of course, Zhao Changxing didn't think he could succeed on Sedna. In particular, at this stage, some people have even begun to secretly use industrial alcohol and medical alcohol to satisfy their addiction, and the strict prohibition on alcohol cannot continue.
Of course, Zhao Changxing would never touch this stuff. Not only that, he would never get married or raise any children.
If he cannot live forever, but only has a life span of a hundred years at most, then if the conditions are met, he will be happy to start a relationship, get married and raise several children.
But it seems that I can really stay young forever...
So, under the premise that you must serve as the leader of human civilization for a very long period of time, getting married and raising offspring means the emergence of an interest group surrounding yourself - this is not based on personal will. But it is bound to happen. Once such interest groups appear, the overall development of human civilization will be affected.
This is something Zhao Changxing absolutely cannot accept. As early as when he set off from the earth, he had already made up his mind to dedicate everything he had to civilization.
So he can only stay single.
But he doesn't think this is a problem for him. The reason is simple. Watching human civilization become increasingly powerful and prosperous can bring him spiritual enjoyment far beyond a relationship.
In this respect, the interests of human civilization highly overlap with his personal interests.
At this moment, the first newly added circle was officially completed, but it was not put into use immediately. Instead, it served as a temporary transfer station for supplies. In this way, the construction speed of subsequent circles can be increased again.
The number of flame-type spaceships has also increased to 20, and it continues to increase. So just one year later, the second new circle was built. After that, it’s the third, fourth… until the 50th.
Among them, one circle is specially built as a medical center, one circle serves as a material transfer and equipment maintenance center, one circle serves as a warehouse, and two circles serve as activity centers. The remaining 45 circles, together with the original 5 circles, are all devoted to the task of raising minor humans.
At this moment, the entire Spark spacecraft can raise a total of 36,000 minors at the same time. On average, up to 2,000 people come of age every year, thus replenishing the planet Sedna.
It is now May of the 175th year of the New Calendar. It was at this time that the population of human civilization officially exceeded the one hundred thousand mark.
