The lunar landing module of the Chang'e fleet is completely different from the one used by the Apollo spacecraft of the original time and space. This is actually a small transportation spacecraft modified. Originally, this small transportation spacecraft was used to serve as a short-distance transport ship at the Tiangong base. In order to save costs, its structure is very simple. It is basically a set of rocket engines, plus a fuel tank and a simple control panel, including a life support device. None, you have to wear a space suit to drive. Now after some modifications, it has been enlarged with a fuel tank and a downward-facing main rocket, and is now used as a lunar module. Each of the five spacecrafts is equipped with four such lunar modules, which are used as transportation to and from the moon surface and orbit around the moon. After the lunar module landed gently on the moon and stopped, the hatch opened and the three astronauts walked out. Without saying a word, they started working. There is no pretentiousness at all like Armstrong said to the camera, "That's one small step for man, one giant leap for mankind!" The first person to step out of the lunar module, and the first person to land on the moon in this plane, was Captain Si Wanli of the Space Force. He was originally from the Air Force, but has now been transferred to the Space Force. But Wen Desi had already said these pretentious words for them. When the image of them setting foot on the moon appeared on the display screen, the command center was already filled with joy. "This is only a small step for him, but a giant leap for mankind!" Wen Desi said loudly when Si Wanli took a cautious step. ¡°Bah, bang, bang, bang¡¡± A warm round of applause erupted from the command center. Captain Si on the screen took out a terrain photo, looked around, and checked whether he had indeed landed in the predetermined area that had been photographed by satellite before, after confirming that it was correct. He and his two companions circled around, using their feet and probes in their hands to roughly confirm that the ground was solid enough. Si Wanli then returned to the lunar module and took out a camera and supporting equipment. After connecting them, he tried to see if the functions were normal. The two companions took out several pieces of cloth from the cabin and spread out a cross and an arrow on the ground. At this time, Si Wanli used the radio to call the fleet: "Commander, I am the advance team. The ground has been checked and there are no problems. You can proceed to the next step." "Received!" Fleet Commander Colonel Chu Si immediately contacted the No. 2 spacecraft . "No. 2, this is Huang Si. Are you ready?" "Ready, Commander, you can land." I saw Chang'e 2 started the reverse thrust engine and slowed down. I saw the entire hull heading directly towards It landed on the moon, and its target was the symbol on the ground. When it reaches an altitude of 200 meters, it starts the hull's deceleration engine and slowly lands on the lunar surface. The landing was very accurate, almost directly landing on the center of the circle. This is for sure. Those who can be selected to fly spaceships are the top ones in the aviation force. This man used to fly the Sea Harrier, so vertical landing is not a problem at all. After the cabin door opened, more than a dozen people walked out of the cabin one after another, two of them also drove two electric lunar rovers. It is the first time to work somewhere other than the earth, and everyone is inevitably a little excited. An astronaut said on the channel: "Hey, the scenery of this moon is too ugly, completely different from what it looks like on Earth." "Yeah, yeah, it's really ugly, bare and nothing." " Okay, you¡¯re not here for a trip, so hurry up and get to work.¡± Everyone started working immediately, some installed instruments, some drove to explore, and some continued to build landing marks with cloth boards. "Does the moon landing program have insurance filings for astronauts on the moon?" Wen Desi asked. "Of course there is" Wen Zebin said from the side: "This is just a routine mission, there will be no danger. The spacecraft has enough oxygen, food and water for everyone to live for two months. We only ask for help. Once the signal is sent, follow-up rescue will arrive in at most three days. Even if the personnel cannot be evacuated immediately, there will be no problem in supplying. "With Tongtianqiao and Tiangong bases, we can be so confident when traveling to the moon. Wen Zebin continued to introduce his design to his father: "Although these five spaceships have similar appearances, their internal cabins and functions are completely different. Number 1 is responsible for the round trip between the moon and the Tiangong base, and number 2 and 3 will be for landing. To the lunar surface, the center of our first lunar base, No. 4 and No. 5 will become the foundation of the lunar orbiting space station. "The astronauts were busy for a long time, selecting a new landing area on the ground and laying out the landing board. The captain of Chang'e-2 returned to the ship and informed Huang Si: "Commander Huang. It's ready. Number 3 can come down." Then, Chang'e-3, which was in orbit, also landed, and the other three spacecrafts were lost in total by 8. The lunar module came down. After landing on the ground, more than 40 astronauts and a dozen robots came out.The astronauts moved out several pieces of machinery and equipment and joined the work on the ground. The robots were also directed by several astronauts to work. Of course, these robots look nothing like humans. Some look like spiders, some look like scorpions, and some look like toy cars with robotic arms. Anyway, none of them look like humans. Fleet Commander Huang Si was also among this group of people. He first looked around and then ordered the four spacecraft in orbit to drop the containers. A few minutes later, a total of 64 large containers were thrown out of orbit by the spacecraft. After landing at a certain distance, the radio altimeter was activated and the retrorockets installed at the four corners of the containers were ignited. Under the influence of the rockets, the containers slowed down. Landing speed. This airdrop method was actually not developed for moon landing. It's just that the Air Force's plan for airdropping armored vehicles and paratrooper combat vehicles at low altitudes across the field was conveniently taken over by the moon landing team. Seeing the rocket ignite, the personnel on the ground immediately took over the control and activated several posture-adjusting rockets around the container through radio remote control, allowing them to land closer to facilitate transportation. After the container landed, several people rode two electric vehicles over. They first found two containers containing vehicles, and drove six electric lunar rovers out of them. Then everyone took the vehicles and dragged all the containers back to the spacecraft, opened them, took out things from the middle, and moved them into the spacecraft. and assemble some instruments on site. This includes six containers filled with solar panels totaling 10,000 square meters. After the astronauts moved them out of the container, they immediately began laying and installing them. They will be the main source of power for the lunar base. Several machines were also arranged. In addition to several standard detector antennas, telescopes, reflectors and searchlights, electric furnaces, excavators, drilling machines and other equipment are all available. This is the first time humans have landed on the moon in this plane, but it is not a simple "lunar exploration". It is definitely not like the Apollo spacecraft in the original time and space, which mined a few pieces of ore and then went back. China's first moon landing was a systematic project, including landing, exploration, and base establishment, all completed at once. The gravity of the moon is very low, only one-sixth that of the earth, so it is very easy to work, not to mention there are robots. In particular, the four crab-shaped moving robots are particularly powerful. One robot can move a container. These containers are similar to containers, and most of them have very regular shapes. After emptying the contents of the container, everyone worked together to drag the empty container to the two landing spaceships. After removing the doors at both ends, they arranged them into several hollow square and long shapes, and then used a welding gun to The containers are welded together and sealed with strong glue inside and outside the welds to make them airtight. Finally, four small air lock chambers were installed on the exit, which were also welded first and then closed with glue. After completion, pour in gas to test the air tightness. Then everyone dug soil around, and then piled a thick layer of soil on the container. This was to strengthen the ability of the container shell to block various radiations in the universe, so that it could be used as a temporary residence. "Well, this design is good. The container is the main body of the base room, which makes full use of the transportation capacity and saves costs!" Wen Desi nodded with a smile. "However, it is precisely because of cost considerations that the shell is not completely made according to space standards. To use it as a living place, some lunar soil must be added. For the sake of safety, the base rooms made of this kind of container are all equipped with radiation detectors. Alarm." Wen Zebin said. "This kind of room is mainly used as a warehouse or something. The astronauts' daily life is mainly carried out in the main body of the spacecraft" On the lunar surface, Huang Si looked around and felt that something was missing. After thinking for a while, he suddenly realized, so he ran into Chang'e 2, took out a five-star red flag and planted it on the ground, declaring this place to be Chinese territory. ¡°Bah bang bang bang¡¡± This move caused a burst of warm applause in the command center. "Mr. Wen, this moon belongs to China. This is our country's first territory outside the earth" Major General Lin Feng, the commander of this moon landing operation, said excitedly. Wen Desi smiled and nodded: "Of course, no one can compete with us, hahaha" Looking back at the earth at this time, he couldn't help but feel a little superior. When you are still the heads of the human mind on the earth, we are already developing the sea of ??stars. He instructed: "The moon base is just the beginning. It is a dock for us to march to other planets, and it is also our mineral base, so this base must be built properly" Wen Desi responded to the behavior of relying on the moon landing to show off national power. He has no interest at all. He is only interested in lunar resources, and once he comes, he has no intention of leaving. Chang'e 2 and 3 are the foundation of the first permanent lunar base, and those containers are the various peripheral rooms of the base. While most people are building houses, there are a few othersI found a large number of lunar soil, rocks and core pillar specimens drilled by a drill, totaling about six tons. Due to the low gravity environment, the actual weight is only about one ton. They slowly moved it to a transfer module attached to Chang'e-2, and a person drove the rocket to lift off, sending the lunar rock and soil samples back to Chang'e-1. After receiving the lunar rock specimens, Chang'e 1 started its engines to accelerate out of the moon's orbit and returned to the Tiangong base to deliver the lunar rock specimens. Only Chang'e 4 and 5 are left in lunar orbit as the basis of the lunar orbiting space station. ¡°After Chang¡¯e 1 returned, Wen Desi and several of the visiting officials took the SkyTrain back to Earth. Nor would they be able to stay on the space station for long periods of time. ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Although China¡¯s moon landing was large in scale, it was not publicly or heavily publicized, and was just carried out in a low-key manner. . And it¡¯s not just a one-time visit. Chang¡¯e-1 will return to the Tiangong base and unload the lunar rocks and soil samples, then re-hook the container and load the cargo. It will serve as a transport ship to transport subsequent supplies, equipment and personnel to the moon again. Form regular flights. Later, three spacecraft were added to this flight, and a total of four spacecrafts traveled between the moon and the Tiangong, ensuring that at least one spacecraft could go back and forth every day. When connecting Tianfeng to the Earth, the retrieved lunar rock samples will be used for analysis, and then compared with the on-site analysis data of the instruments brought by Chang'e-3 as a basis for resource assessment and extraction equipment design. As for the name of the first lunar base, it was named "Guanghan Palace". After the construction of the Guanghan Palace base was completed, the astronauts rode the electric lunar rover around to conduct subsequent search expeditions and retrieve samples from various places. Three months later, the lunar exploration team drew a resource distribution map centered on Guanghan Palace and within a thousand kilometers around it. The moon is rich in mineral resources, especially some rare metals, which have more reserves than those on Earth. For example, rare earth elements, uranium and thorium, which are relatively small on the earth, are abundant on the moon. Kripite is one of the three major rock types in the lunar highlands and is rich in potassium, rare earth elements and phosphorus, as well as thorium and uranium. Klip rocks are widely distributed on the moon. The Klip rocks in the Procellarum region, which are rich in thorium and uranium elements, are covered by late-stage mare basalts. The Krip rocks mix and form high furnaces and uranium materials, and their thickness is estimated There are 10-20 kilometers. The total resources of rare earth elements contained in the Klip Rock in the Oceanus Procellarum alone is approximately 22.5 billion tons - 45 billion tons. The rich thorium and uranium contained in Krip Rock are also one of the important mineral resources for human development and utilization of lunar resources in the future. Common materials metals are also very abundant on the moon. Taking iron as an example, the 5 cm thick sand on the lunar surface alone contains hundreds of millions of tons of iron, and the entire lunar surface has an average of 10 meters of sand. The iron on the surface of the moon is not only extremely abundant, but also easy to mine and smelt. In addition, the iron ore on the moon mainly exists in the form of iron oxide, which is quite pure. During smelting, you only need to separate oxygen and iron. But according to the assessment of the Chang'e Task Force, lunar mining is unprofitable in the short term. The reason is that the shipping costs for lunar resources to be mined and transported to the earth are too high, and they cannot compete with earth resources in terms of cost. In fact, this is not only true for lunar resources, but also for most space resources at this stage. Unless it is processed into materials or tools that cannot be produced on earth, such as foam metal, it will not be worthwhile. Let alone transporting it back to the earth, it is not worthwhile to smelt the metal on the moon and transport it to low-Earth orbit for use as materials. It is much more expensive than smelting the metal on the earth and then projecting it into orbit using the Tongtian Bridge. Therefore, although the moon is rich in various metals, it is still unrealistic to use them on the earth, and the cost is too high. So when the United States proposed "returning to the moon" at the beginning of the 21st century in the original time and space, it only focused on helium-3, which is a scarce resource on the earth. Compared with other resources, it is cost-effective to develop helium 3 on the moon, because with the same power generation, the cost of using lunar energy helium 3 is only 10% of the current power generation cost of nuclear power plants. For example, based on the price of oil, for helium at that time The market valuation of helium 3 is about US$8 billion per ton. Their estimate of the total cost of mining helium 3 on the moon, refining and transporting it back to the earth is US$200 million per ton. This is definitely a super "gold mine" on the moon. . Helium 3 is good. Helium fusion using deuterium and helium 3 can be used as an energy source for nuclear power plants. Moreover, this fusion reaction does not produce neutrons, but only non-radioactive protons. Therefore, no radiation is produced when using helium 3 as an energy source. , will not cause harm to the environment. This is a safe, pollution-free and easy-to-control nuclear fusion. It can not only be used in ground nuclear power plants, but is also particularly suitable for space navigation. But helium-3 is very scarce on Earth. In the entire earth's atmosphere, helium accounts for only five millionths; and helium 3 only accounts for thousands of these heliums.Fourteen ten thousandths. Even if all the helium 3 in the earth's atmosphere is separated, it will only be 500 kilograms. If the helium 3 in sea water and soil is added, it will only be 15 tons. The situation on the moon is quite different. Since there is no global "dipole magnetic field" protection on the moon, the solar wind containing rare gas ions such as helium, neon, argon, and krypton can drive straight in and continuously hit the lunar surface, making the lunar soil rich in helium 3. . The reserves of helium 3 in the lunar surface soil are estimated to be 500 million tons! More than 1 million tons are easily mined. ¡°According to the current energy usage of the earth, about 30 tons is enough for all mankind for one year. Even taking into account future development and population increase, only the easily mineable part of helium 3 is enough for mankind for thousands of years. But it is still too early for large-scale mining of helium 3. After all, the technology tree of fusion reactors is too high. Even if China in this plane has Wen Desi's cheats, there is no research on fusion reactors and they are still in the laboratory stage. According to the current progress, it will take at least five to ten years to achieve a breakthrough and carry out commercial promotion. Therefore, in the short term, at most a few kilograms of helium 3 can be mined and sent back to the Fusion Research Institute as experimental material. However, in accordance with Wen Desi¡¯s habit of stocking up on goods, he is now preparing to gradually develop helium 3. Even if it is not needed, he can still store it in the warehouse. It is not food anyway and will not go bad. Of course, the high shipping cost of lunar resources can also be improved in some ways. For example, building a mass projector on the lunar surface can significantly reduce transportation costs. Since the gravity of the moon is only one-sixth that of the Earth, and more importantly, there is no atmosphere, so even with the specifications of the Tongtian Bridge, it only needs to be built to a length of 110 kilometers, and because the vacuum is higher than that of the Earth, then A huge set of air extraction and operating heat dissipation series is completely omitted, so the cost is much lower than that of the Earth's Tongtian Road. The cost of the entire 100 kilometers is estimated to be no more than 1 billion yuan. In addition, there is a more extreme approach, which is not to use Tongtianqiao's 2.75G low-acceleration projection mode, but to use a higher G-number high-acceleration projection mode. For example, if the G number is increased to 30G projection, the track length can be reduced to less than 11 kilometers, and the cost can be reduced to about 100 million yuan. Of course, this approach will cause the lunar surface base to lose the ability to project personnel and conventional instruments, but if the moon is just used as a mine to project minerals or metal blocks, there will be no problem. However, even so, the moon as a mining farm is only one of the goals of China¡¯s space mining farm. The reason is simple, because Comrade Moon has a very strong competitor, which is the "near-Earth asteroid group". Because there is no gravity on an asteroid, the transportation cost is lower than that of the moon. If a mining station can be established on an asteroid to refine metals, and a lightweight mass projection orbit can be established to continuously launch the smelted metal blocks back to the Earth-Moon system, the cost will be lower than that of the moon. Mined from the moon and launched to a much lower orbit. Although the metal block that inertially advances after launch may need to fly for several years and be captured one by one by tugboats after entering the Earth-Moon system, it can be launched every day, and packets will be lost and received every day thereafter. Of course, this is also conditional, that is, it must wait until the smelting plant and mass projector can be established in the asteroid belt. And this will take a long time, depending on the development of aerospace technology. But for now, the exploration of the asteroid belt has begun. Therefore, in China¡¯s current plans for the moon, minerals are secondary. It is mainly used as a large-scale experimental base and space factory, as well as the first stop for human interstellar navigation and a transfer station for interstellar migration. The surface of the moon has a high vacuum, no magnetic field, stable geological structure, weak gravity and a highly clean environment. The back of the moon is not interfered by radio waves from the earth. A lunar astronomical observation base, biological products and new materials laboratories, earth observation stations and deep Space exploration outposts are of great political and scientific significance. The moon is also an ideal place to study lunar science, astrochemistry, space physics, life science, earth observation science and materials science. Establishing an astronomical observation station on the moon can not be restricted by the earth's atmosphere, and can conduct observations in the band from gama rays to long radio bands. An interferometer array of any band can be set up on the moon, and the quiet environment on the moon can ensure its measurement accuracy. Some astrophysical phenomena such as supernova explosions and gamma ray bursts can be observed and studied in different wavebands. According to the detection results, there is water on the poles of the moon, with a total amount of more than 500 million tons. In other words, there is no shortage of water. Moreover, oxygen and hydrogen will be obtained after electrolyzing water, so there is no shortage of oxygen. Therefore, much less materials need to be transported to the Guanghan Palace base. As for energy, there is no shortage of energy. On the moon, the cheapest energy is solar energy. Since the moon has no air, the sun can shine directly on the moon without being blocked or attenuated. Therefore, solar energy is strong and efficient. At the same time, the moon's axis of rotation is basically perpendicular to the ecliptic plane.Solar photovoltaic power generation base can provide very abundant and cheap electricity. And don¡¯t forget the large amount of uranium ore on the moon. It is not cost-effective to transport these things back to the earth, but it is still very cost-effective to build a fission nuclear power plant on the moon. And there is no need to worry about pollution like on earth. After the problems of energy, water and oxygen are solved, according to Chinese customs, a field and plantation will soon be opened at the Guanghan Palace Base, so that some food can be self-sufficient. Therefore, the moon is very suitable as a transit station for interstellar migration.