Jiuquan Space Center, after the mobilization meeting, the entire space center became extremely busy. Every day, aerospace planes continued to take off from here to travel to and from space, sending scientists and astronauts to the "Tiangong" space station in space, repeating the preparations for the early stage of the manned lunar landing activity, and many experiments and inspections.

The unmanned spacecraft launched to the moon one after another, and had already begun to launch a massive amount of materials to the moon in advance, preparing to build a space station similar to the "Tiangong" on the moon.

"Please see, this is a detailed high-definition picture recently transmitted by the moon satellite. What we have to do now is to choose a suitable location on the surface of the moon as the landing site, and everyone can express their opinions."

In a conference room, the huge monitor played detailed data of the moon transmitted by the moon satellites, and the pattern of a moon slowly rotated on the monitor.

The scientists below were thinking carefully one by one. Everyone was wearing a virtual machine on their wrists. All the data had been sent directly to the virtual machine and was printed in diameter into everyone's minds, so everyone didn't have to look at the screen at all. At this time, everyone was looking at the data in their minds.

"Since we are preparing to build a base with people on the moon, we must choose a resource-rich area. According to the data of resource spectral detection satellites, the area of ​​the Moscow Sea is quite rich, and it is a basin formed by meteorite impact. The terrain is relatively flat, which is also very helpful for future resource mining."

"No, it's because it's a basin and the terrain is too low, which is inconvenient for future resource extraction and relatively inconvenient for returning to space."

"This time the location of the moon landing can also be regarded as a choice for future lunar bases. The location you choose should be close to a resource-rich area and the terrain should be gentle, so that we can lay a lunar airport later. The Russian Sea is obviously not good here. In the basin, our lunar rover will restrict activities in other areas."

"I think the Wells area is quite good. The terrain of this area is very smooth, the resources are relatively sufficient, and it is even close to the equatorial area of ​​the moon. The light conditions are quite good, the temperature is not too low, which is also conducive to the operation of solar equipment and obtaining relatively more energy."

"No, no, although the resources in the Wells area are abundant, according to the spectrum, most of the resources in this area are common iron, copper, etc., and there are no precious resources."

"I think the area of ​​Storm Ocean is quite good, with a lot of rare resources, and its area is large enough, with a total of more than 5 million square kilometers, which is larger than the area of ​​half a China."

In the conference room, top scientists had a heated discussion on where to land. Because it was related to the future relationship between the lunar base, the discussion was relatively fierce.

We must consider the future development of the lunar base, but also the difficulty of landing the moon. Of course, the most important thing is the issue of lunar resources. The lunar base is likely to develop into a frontier base for lunar resource mining in the future. If there are too few nearby resources, we must go to other areas to exploit resources in the future.

Transporting materials on the moon, exploiting resources is not as simple and easy as it is on the earth. It is very likely that the cost will increase significantly just a dozen kilometers away. Moreover, this lunar base is basically equivalent to announcing the occupation of a certain area. It is also very important whether there are precious resources in this area.

If you choose an ordinary resource area that only has iron and copper, there are many resources on the earth. To mine it, it is naturally to exploit some very scarce resources on the earth, such as rare earths, He3 and other high-value mineral resources.

After the final discussion, the scientists agreed to place the landing site in the "Storm Ocean" area, which is a very famous Moon Sea area on the moon. It is located on the front of the moon and is also facing the ground. This area shows the data detected by resource detection satellites launched in the past.

The "Storm Ocean" area has very rich rare earth resources and rich He3 resources. Moreover, the lunar basalt in this area contains very large metals such as iron, uranium, copper, gold, silver, etc., which can be said to be a treasure pot.

Of course, what is more important is that this area is a moon sea, with a very gentle interior, which is very conducive to the construction of a lunar base. It is also very beneficial for the expansion of the lunar base in the later period. It is also located near the equator of the lunar lunar area, and it is very utilizing round-trip travel to and from space.

...

In another conference room, a simulated video is constantly playing on a huge display. In this video, a moon landing spacecraft slowly lands on the moon, obviously using old-fashioned jet power.

There are also many scientists constantly discussing where they are. It is obvious that this group of scientists are studying the moon-landing spacecraft.

"There is no air on the moon and no runways, so our aerospace plane has no use at all when it reaches the moon. There is no way to say that we can directly use the aerospace plane to travel back and forth with space like the earth."

"So we must develop a safe and reliable spacecraft that can be recycled multiple times to travel between the moon and space. Only after we have established our own runway on our lunar base can we use the space plane to go back and forth directly to and from space."

As top scientists in the field of aviation and spacecraft, Liu Shiying and Li Fu were assigned to this project team to jointly lead the research of spacecraft used to land on the moon and travel back and forth between the moon. The two are the heads of the lunar spacecraft.

In fact, the technical content of the lunar spacecraft is much lower than that of the aerospace plane. You must know that the Hawkstone has landed on the moon in the last century and has successfully returned. The spacecraft technology used has long been difficult for China.

However, China's manned moon landing this time is obviously different from the manned moon landing in the last century. This time, China's manned moon landing not only needs to land on the moon, but also needs to build a lunar base on the moon. The materials and personnel required to transport are far beyond the manned moon landing in the last century.

Naturally, the spacecraft has higher requirements and requires greater thrust, safer, more reliable, stable and continuous recycling. This difficulty suddenly increases by countless times.

Unless the base on the moon has been built, it can build a runway for controllable aerospace planes to land and take off, and the spacecraft will be eliminated by that time, but there is no air on the moon, so it is impossible for the aerospace planes to use air to slow down.

The only thing to consider about the gravity of a moon is 1.633, which is 1/6 of the earth's gravity. In addition, there is no air. If there is a runway on the moon, it is very easy and simple to take off the sky plane, but it is very difficult to land.

First, there is no air resistance, so it is difficult to land at this speed. The moon's gravity is too low and needs to be considered. Therefore, in the future lunar base planning, a super long runway is absolutely indispensable. At that time, you can only use the runway's friction or design reverse thrust to reduce the speed.

"Li Fu, do you have any good ideas?"

Liu Shiying looked at the many scientists in the entire conference room and asked with his eyes lit up when he saw Li Fu.

"Traditional spacecraft is good for manned landing on the moon, but if it is used to transport materials, the cost will be very high. Moreover, it is on the moon. The cost of sending spacecraft with rockets on Earth is already very high, not to mention on the distant moon."

"And in the future, the resources mined on the moon will definitely be transported into space on a large scale, so I think we should consider designing a cheap aircraft from the beginning."

"Since there is no air on the moon and the gravity of the moon is very low, we can actually consider installing a reverse deceleration thrust engine on the space plane. In this way, I think it should be feasible and can meet the moon's needs to travel to and from space."

Li Fu kept pondering in his mind, and after thinking for a long time, he slowly spoke. As soon as Li Fu opened his mouth, he denied the original plan to land on the moon with a spacecraft, but continued to use a space plane. Of course, this space plane would have to be specially designed, with a plasma-powered engine installed in front, and then reverse thrust was used to reduce the speed of the space plane, thereby realizing the plan to land on the moon.

If it is on the earth, due to air resistance and strong gravity factors, the engine that slows down in reverse is obviously not possible, because the reverse-mounted engine will seriously affect the streamlined shape of the aerospace plane and become a great resistance.

And when the aerospace plane is flying at high speed, the reverse engine will definitely be instantly blown off by powerful air, and the entire aerospace plane will be destroyed.

But the moon is different. The moon has no air, so you don’t have to consider the issue of air resistance. It doesn’t matter what your aircraft is designed to look like. This environment is still very similar to the environment in space. However, there is also a gravity factor to be considered on the moon, but the gravity of the moon is not very large.

After hearing Li Fu's words, other scientists opened their eyes instantly and couldn't help but nodded. This method is indeed feasible, and it also took into account long-term issues, rather than just this manned moon landing.

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