Military Technology

v2 Chapter 2090: lunar lander

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Faced with Wu Hao's tough tone, Zhou Xiangming opened his mouth wide. He wanted to try his best to explain, but after seeing Wu Hao's determined gaze, he swallowed all the words back.

We do our best. Zhou Xiangming said.

Wu Hao nodded slightly upon hearing this, with a smile on his lips. What he wants is Zhou Xiangming's attitude. As for whether he can't complete the game within two years, he doesn't necessarily insist. He is very clear that it is almost impossible to complete such a huge project within two years, but human beings are constantly creating miracles, and Haoyu Technology is a group of companies that are good at creating, so Wu Hao also hopes that through this This kind of pressure, so that they can work hard to act, time is running out.

What about the lunar lander, how is that going. Wu Hao then turned his head to look at Zhou Xiangming and asked.

Hearing Wu Hao change the subject, Zhou Xiangming breathed a sigh of relief, but became worried again, then shook his head at Wu Hao and said.

With regard to the lunar lander, we are not going well.

Wu Hao was not surprised by Zhou Xiangming's answer, nor did he get angry. Instead, he nodded slightly and looked at the other party and said, "Tell me, what problem did you encounter?"

Seeing Wu Hao's reaction, Zhou Xiangming secretly breathed a sigh of relief, and then said to Wu Hao and the others: "If it's just an ordinary one-time lunar lander, we should have no problem in this regard.

The sky crane technology used by our "Wangshu" intelligent lunar surface inspection rover can also be regarded as a kind of lunar lander to some extent. Therefore, in this regard, we still have a technical foundation.

If it is just a simple landing on the moon, then our technology is ready-made, and it can be used for reference and re-designed and applied without any problem.

But our manned moon landing and transportation of materials and equipment.

Leaving aside the aspect of transporting materials and equipment, let’s talk about the manned moon landing. We have to consider how to safely land people on the moon, and how to connect people from the moon to dock with our Earth-Moon transfer spacecraft.

And this is the problem we are currently facing.

Everyone knows that the traditional lunar lander is divided into two parts, namely the lunar lander and the lunar ascender carried on it. The lunar landers called the ascender to the manned module above, and then reached the lunar lander to land on the moon.

When the lunar scientific research mission is completed and needs to be returned, the personnel put the lunar ascender on the table again, and then the ascender separates from the lunar lander platform, and ascends alone with the orbiter orbiting the moon, that is, our earth-moon transfer spacecraft Make a docking.

The personnel are transferred to the moon and transferred to the spacecraft, while the ascender is directly discarded.

This is currently the most mainstream method of landing on the moon. The old Mi Apollo used this method 40 or 50 years ago to land on the moon. It is also the method used in our lunar scientific research sampling and return project.

The reason why this technology has become the mainstream of lunar exploration projects in various countries is because it is the most feasible way among the current technical solutions for lunar landing and return.

In a sense, the lunar lander can also be regarded as a manned spacecraft. It is divided into three parts, from bottom to top, the lunar lander platform, the ascender, and the payload on the ascender. human cabin.

However, under normal circumstances, the ascender and the manned cabin are designed together, which can greatly reduce the structure, weight and volume. Similarly, during the return and ascent phase, only the ascender returns. This design also reduces the mass launched from the moon, reduces the load, saves fuel, and thus reduces costs.

Each unit performs its own duties and cooperates together to complete the entire moon landing and return steps. "

Speaking of this, Zhou Xiangming slid the transparent folding tablet a few times, and then said to everyone while projecting the picture on a screen in front of them.

"And what we have to do now is to abandon this very mature and time-tested successful design plan, and find another way, and it can even be said to overthrow all previous successful cases.

Our goal is to design and manufacture a reusable lunar landing and return device, that is to say, we have to abandon the previous split structure, and combine the lunar lander platform and returner manned cabin All fused together to design a lunar lander to and from the lunar surface and lunar orbit. "

After talking about this, Zhou Xiangming changed a picture of the surface of the moon to indicate a breakthrough, and then continued to introduce to everyone: "Everyone, please look, this is the moon. It is about 380,000 kilometers away from our earth, and it is a natural satellite of the earth. , is the closest planet to us.

Its average radius is about 1737.10 kilometers, which is only 0.273 times that of the earth; its mass is close to 7.342x1022 kilograms, which is only 0.0123 times that of the earth.

Although it looks small compared to the Earth, it is actually the fifth largest satellite in the solar system.

Also because it is so close, it has always played a vital role in our human culture, and even in some myths, it is endowed with very beautiful stories. In Chinese, it is commonly known as the moon or moon, Taiyin, Xuantu, Chanjuan, Yupan, Jinchan and so on.

Because the volume and mass are too small, the gravitational force of the moon is very small, so it has no atmosphere, or its atmosphere is very thin and can be ignored.

Therefore, when we land on the moon, we cannot use the method of landing on the earth, using a parachute to slow down the landing. Therefore, rocket reverse propulsion technology is generally used to continuously decelerate the lander ~lightnovelpub.net~ and finally land on the moon.

It is also easier to ascend on the moon, because its gravity is very small, so it is relatively easy to get rid of the gravity of the moon.

Note that what I'm talking about here is relatively easy. But in fact, it is also very difficult to improve the moon lift technology.

So how to design a lunar lander that can be used repeatedly to and fro is a question we have been thinking about for a long time. In this regard, we have done a lot of research and homework, and have designed many solutions.

But the difficulty now is that these design schemes and some technologies and assumptions of ours cannot be experimented with, and intelligently use supercomputers to simulate.

But you also know that the real environment is always more complicated than the simulation in the computer, so computer simulation alone cannot fully verify our ideas and technologies.

This is also our biggest headache at present, although we have also turned to the aerospace department for support and cooperation in this regard. But the relevant help and support that can be obtained is also very limited, and we can refer to very little, so we still have to do everything by ourselves. "