Jiuquan Space Center, after the mobilization meeting, the entire space center has become extremely busy, every day there are space planes constantly taking off from here to and from space, sending scientists and astronauts to the "Tiangong" space station in space, and repeating and inspecting the preparations for the manned lunar landing activities.

Waves of unmanned spacecraft launched to the moon have begun to launch a large amount of materials to the moon in advance, preparing to build a space station similar to the "Tiangong" on the moon side.

"Everyone, please see, this is a detailed high-definition image transmitted back by the moon satellite recently, and now all we have to do is to choose a suitable place on the surface of the moon as a landing site, and everyone can express their opinions."

In a conference room, a huge monitor plays detailed data about the moon transmitted by the lunar satellite, and the pattern of the moon slowly rotates on the monitor.

The scientists below are thinking carefully one by one, everyone is wearing a virtual machine on their wrists, and all the data has been directly sent to the virtual machine, and then printed into everyone's minds, so everyone doesn't have to look at the screen at all, at this time, they are looking at the data in their minds.

"Since we are preparing to establish a manned base on the moon, then we must choose an area rich in resources, according to the data of the resource spectrum detection satellite, the Moscow Sea is quite rich in resources, and this is a basin formed by meteorite impact, the terrain is relatively gentle, and it is also very helpful for the exploitation of resources in the future."

"No, it's because it's a basin and the terrain is too low, but it's inconvenient for mining resources in the future, and it's also relatively inconvenient for returning to space."

"The location of this lunar landing can also be regarded as the choice of a location for the future lunar base, the location chosen should be close to the resource-rich area, and the terrain should be gentle, so that it is convenient for us to lay a lunar airport later, the Russian Sea is obviously not good here, and the basin restricts our lunar rover to other areas of activity."

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

"No, no, although the Wells region is rich in resources, according to the spectrum, the resources in this area are mostly common iron, copper and the like, and there are no precious resources."

"I think the area of the Storm Ocean is quite good, there are a lot of rare resources of all kinds, and its area is also large enough, more than 5 million square kilometers, which is larger than half of China."

In the conference room, top scientists had a lively discussion on where to choose to land, because it is related to the relationship between the future lunar base, so the discussion is also relatively intense.

It is necessary to take into account the future development of the lunar base, but also the difficulty of landing on the moon, of course, the most important thing is the problem of lunar resources, the lunar base is likely to develop into a frontier base for the exploitation of lunar resources in the future, if there are too few nearby resources, it will be necessary to go to other areas to exploit resources in the future.

It is not as simple and easy as transporting materials and mining resources on the moon, it is likely that the cost will be greatly increased just a dozen kilometers apart, and this lunar base is basically equivalent to announcing the occupation of a certain area, and whether there are precious resources in this area is also very important.

If you choose an area with only ordinary resources such as iron and copper, these resources are also very many on the earth, and it is natural to mine some very scarce resources on the earth, such as rare earths, He3 and other high-value mineral resources.

In the end, the scientists agreed to place the landing site in the "Storm Ocean" area, which is a very famous lunar sea area on the moon, located on the front side of the moon and directly facing the ground, according to the data detected by the resource exploration satellites launched in the early stage.

The "Storm Ocean" area is very rich in rare earth resources, and also contains rich He3 resources, and the lunar basalt in this area contains a very large amount of iron, uranium, copper, gold, silver and other metals, which can be said to be a cornucopia.

Of course, more importantly, this area is a lunar sea, the interior is very gentle, very conducive to the construction of the lunar base, for the later expansion of the lunar base is also very beneficial, the location is also located near the lunar equator, very use of space.

……

In another conference room, on a huge monitor, a simulated video of a lunar spacecraft slowly descending on the moon is apparently using old-fashioned jet power.

In this conference room, there are also a lot of scientists who are constantly discussing, and it is clear that this group of scientists is working on a spacecraft to the moon.

"There is no air on the moon, and there is no runway, so our aerospace plane has no use for the moon at all, and there is no way to say that it is directly like the earth, directly using the aerospace plane to travel to and from space."

"So we have to develop a safe and reliable spacecraft that can be reused multiple times to travel between the moon and space, and only after we have established our own runway on the moon base can we use the space plane to go directly to and from space."

As top scientists in the field of aviation and aerospace vehicles, Liu Shiying and Li Fu were both assigned to this project team to jointly lead the research of spacecraft used to land on the moon and travel from the moon to space, and the two were the heads of the lunar spacecraft.

In fact, the technical content of the spacecraft landing on the moon is much lower than that of the aerospace aircraft, you must know that in the last century, the eagle sauce has already landed on the moon and successfully returned, and the spacecraft technology used has long been difficult for Huaxia.

However, China's manned lunar landing this time is obviously different from the manned lunar landing in the last century, this time Huaxia's manned lunar landing is not only to land on the moon, but also to build a lunar base on the moon, and the materials and personnel that need to be transported have far surpassed the manned lunar landing in the last century.

Naturally, the requirements for spaceships are higher, and the need for spaceships with greater thrust, safer, more reliable, stable, and able to be continuously recycled, this difficulty has suddenly increased by I don't know how many times.

Unless the base on the moon has been built to build a runway that can control the landing and take-off of the aerospace aircraft, the spacecraft will have been eliminated by that time, but there is no air on the moon, and it is impossible for the aerospace aircraft to use air to slow down.

The gravity of the moon is only 1.633, that is, 1/6 of the gravity of the earth, plus there is no air, if there is a runway on the moon, it is very easy and simple for the aerospace plane to take off, but it is very difficult to land.

First, there is no air resistance, it is more difficult to land at this speed, but the gravity of the moon is too low, which also needs to be taken into account, so in the future planning of the lunar base, an ultra-long runway is absolutely indispensable, and then it can only use the friction of the runway or the design of the 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 when he saw Li Fu, his eyes lit up and asked.

"It is possible for traditional spacecraft to be used to carry people to the moon, but if you want to use it to transport materials, the cost will be very large, and it is on the moon, and the cost of sending spacecraft with rockets on our side of the earth is already very high, not to mention on the far side of the moon."

"And in the future, the resources mined on the moon will definitely be transported to space on a large scale, so I think we should consider designing a cheap vehicle 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, so I think it should be feasible to meet the needs of the moon to and from space."

Li Fu kept pondering in his mind, and after thinking for a long time, he slowly spoke, and as soon as Li Fu opened his mouth, he denied the original plan to land on the moon with a spaceship, but continued to use the aerospace plane, of course, this aerospace plane should be specially designed, and a plasma-powered engine was installed in front, and the reverse thrust was carried out to reduce the speed of the aerospace plane, so as to realize the plan of landing on the moon.

If it is on the earth, because of the air resistance and strong gravity factors, it is obviously not possible to slow down the engine in reverse, because no matter how the engine is designed, it will seriously affect the streamlining of the aerospace aircraft and become a great drag.

And when the aerospace plane flies at high speed, because this reverse engine will definitely be instantly lifted off by the powerful air, the entire aerospace aircraft will be destroyed.

But the moon is different, the moon has no air, you don't need to think about air resistance, it doesn't matter what your vehicle is designed to look like, this environment is still very similar to the environment in space. It's just that there is a gravity factor to consider on the moon, but the gravity of the moon is not very large.

After listening to Li Fu's words, the other scientists opened their eyes in an instant, and they couldn't help but nod their heads, this method is indeed feasible, and it also takes into account the long-term problem, not just this manned landing on the moon.

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