Vol 2 Chapter 2090: lunar lander

In the face of Wu Hao's tough tone, Zhou Xiangming's mouth widened. He wanted to try his best to explain, but after seeing Wu Hao's determined gaze, he swallowed all the words again.
We do our best. Zhou Xiangming said.
Wu Hao nodded slightly when he heard the words, and a smile appeared on the corner of his mouth. What he wants is Zhou Xiangming's attitude. As for not finishing 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 isn't it that human beings have been creating miracles all the time? Haoyu Technology is a group of companies that are good at creating, so Wu Hao also hopes to pass this project. It's time to put pressure on them to work hard.
How about the lunar lander? Wu Hao then turned to look at Zhou Xiangming and asked.
Hearing Wu Hao changing the subject, Zhou Xiangming breathed a sigh of relief, but became worried again, then shook his head at Wu Hao and said.
Regarding the lunar lander, we are not going well.
Wu Hao was not surprised by Zhou Xiangming's answer, nor was he angry, but nodded slightly and looked at the other party and said, "Tell me, what is the problem."
Seeing Wu Hao's reaction, Zhou Xiangming breathed a sigh of relief in his heart, 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 lunar lander to some extent. Therefore, in this regard, we still have a technical foundation.
If it is just a simple moon landing, then our technology is ready-made, and it can be used for redesign and application without any problem.
But our manned lunar landing and transportation equipment.
Let’s not talk about the transportation of materials and equipment, let’s talk about the manned moon landing. We must consider how to safely land people on the moon, and how to connect people from the moon to our Earth-Moon transfer spacecraft.
And this time and again, this is the problem we are currently facing.
We all know that the traditional lunar lander is divided into two parts, namely the lunar lander and the lunar ascender carried on it. The lunar lander then landed on the moon in a manned module called an ascender.
When the scientific expedition mission to the moon is completed and needs to be returned, the personnel will re-install the lunar ascender on the table, and then the ascender will leave the lunar lander platform and ascend alone with the orbiter orbiting the lunar orbit, that is, our earth-moon transfer spacecraft. Do docking.
The personnel were transferred to the earth and the moon on the spacecraft, and the ascender was directly abandoned.
This is the most mainstream way to land on the moon at present. This is the way that Apollo used to land on the moon 40 or 50 years ago, and this way is also used in our lunar scientific research sampling 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 to return to the moon.
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 load on the ascender. man cabin.
However, in general, the ascender and the manned cabin are designed together, which can greatly reduce the structure, weight and volume. Similarly, in the return ascent stage, 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 works together to complete the entire lunar landing and return steps. "
Speaking of this, Zhou Xiangming slid a few times on its transparent folding tablet, and then said to everyone while putting the picture on a screen in front of them.
"What we need to do now is to abandon this set of very mature and time-tested successful design solutions, and find another way, and it can even be said to overturn all the previous successful cases.
Our goal is to design and manufacture a reusable lunar lander and returner, that is to say, we want to abandon the previous split structure, and use the lunar lander platform, the returner manned module 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 a breakthrough on the surface of the moon, and then continued to introduce to the crowd: "Everyone, please see, 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 the radius of the earth; its mass is close to 7.342×1022 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 moon in the solar system.
Also because of its proximity, it has always played a vital role in our human culture, and even in some myths, it has been endowed with very beautiful stories. In Chinese it is commonly known as the moon or the moon, Taiyin, Xuantu, Chanjuan, Yupan, Jinchan and so on.
Because the size and mass are too small, the gravitational force of the moon is very small, so it has no atmosphere, or its atmosphere is so thin that it can be ignored.
Therefore, when we land on the moon, we cannot use parachutes to decelerate the landing in the way of landing on the earth. Therefore, rocket reverse thrust technology is generally used to continuously decelerate the lander and finally land on the moon.
It is also easier to ascend on the moon~EbookFREE.me~ Because its gravitational force is very small, it is relatively easy to get rid of the moon's gravity to lift off.
Note that what I'm talking about here is relatively easy. But in fact, it is also very difficult to be on the moon ascension technology.
So how to design a lunar lander that can be reused and round-trip, this is a question we have been thinking about. In this regard, we have done a lot of research and homework, and have also designed a variety of programs.
But now the difficulty is that these designs, as well as some of our technologies and assumptions, cannot be used for experiments and intelligently use supercomputers to simulate.
But you also know that the real environment is always much more complicated than the simulation in the computer, so the computer simulation alone cannot fully verify our assumptions and technologies.
This is also the most troublesome issue for us at present, although we have also turned to the aerospace department for support and cooperation in this regard. However, the relevant help and support we can get is very limited, and we can refer to very little, so everything has to be done by ourselves. "