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#头条创作挑战赛#
The content of this article has reliable sources of information, and relevant sources are added at the end of the article
[Preface]
The news of the successful launch of Chang'e-6 to the far side of the moon is extremely exciting, but it is also expected, after all, we have already launched several times before this.
Perhaps it is also for this reason that people began to pay attention to the data difference after the launch of Chang'e-6, and the deviation of the landing position was as high as 16.7 kilometers.
The appearance of this number shocked people, why is there such a big gap? Could it be because of something wrong with our technology? India's data is much stronger than ours, is our space technology not as good as India's?
【着陆差distance】
In fact, looking back now, it is also a lot of emotion, more than ten years ago, we still did not have too many standards for launching a satellite.
As long as he can successfully send him to the moon, the location and data don't seem to be that important, as long as he doesn't explode suddenly in the middle of the flight, it's gratifying.
However, the mainland's aerospace science and technology have developed too rapidly, and in recent years, it has not only achieved something from scratch, but also begun to strive for excellence.
After seeing Chang'e-6 successfully make a soft landing on the surface of the moon and complete the sampling mission, people began to pay attention to its landing deviation.
Regarding the problem of the deviation of the landing position raised by netizens, the official also explained in time, after all, they are the main force, and they must be more concerned about this issue.
After research and discussion, the official believes that the reason why Chang'e-6 has such a problem is because it is very similar to the landing plan of Chang'e-4.
In the whole process, he did not make accurate ranging corrections, but directly used the method of inertial navigation to land.
This will have a big impact on the data, because there are too many instability, and the topographic fluctuations on the lunar surface can skew the data.
Looking at the relevant data of Chang'e-3 before, we can see that the landing deviation of Chang'e-3 at that time was about 80 meters.
The deviation of the final landing point from a landing site set on the ground is also about 600 meters, which is not a small error in the current view.
At that time, Chang'e-3 had successfully carried out a soft landing on the lunar surface, which was equivalent to setting a precedent. At the same time, Chang'e-3 is also the first probe to use machine vision obstacle avoidance technology.
Before that, we used mango sauce when we walked on the surface of the moon, and it could only be sent to the moon. I don't know where to land, but I'll make observations after descending there.
To put it bluntly, it is to shoot arrows first and then release the construction where the target is, after all, the technology at that time was limited, and it was already very good to be able to send a probe to the moon.
The later Chang'e-4 and Chang'e-5 basically implemented inertial navigation, which had a basic role in identifying and avoiding obstacles in the local terrain, and had also been significantly improved.
Therefore, this deviation value is also included in the normal occurrence of the situation, because there are indeed too many uncontrollable factors in it.
Speaking of which, what am I trying to say? That is to say, how he landed, and the deviation value of the landing, in fact, it did not have a big impact.
The detector goes up, and after it goes up, you can clearly see your walking point and the surrounding environment, and you can avoid obstacles and finally land.
The problem is that in addition to this fixed influence, he will have other specific factors, such as his terrain.
The surface of the moon is very rugged and changeable, and our experimental data cannot fully include it, so even if he can avoid obstacles, it will not be 100% error-proof.
Therefore, as he moves more and more, the error accumulated inside the inertial navigation instrument will become larger and larger.
The result is the landing position that is presented in front of us. There will be such an outrageous deviation in the data, and it is acceptable to have bias.
The impact is not great, because in the past ten years, we have been able to get to this point, and there are not a few in the world.
What about Chang'e-6 when it returns? People began to compare China with India's Chandrayaan-3, and then found that there was indeed a certain gap with their landing accuracy.
But it doesn't matter, how did their technology come about? Anyway, we really walked forward step by step and walked out on our own.
Even if there is indeed a slight deviation in the data this time, we will definitely make up for this defect when Chang'e-7 is launched.
Through this launch, we found our own shortcomings, and then we went to make up for our shortcomings, which is a very good thing.
This is aerospace, and how lucky it is to be able to find its own shortcomings in such a business and have the opportunity to improve it.
Isn't this how China came out step by step? It has been perfected step by step, and no top designer in the industry will admit defeat for so many years.
We are never afraid to find problems, and finding problems means that we can solve them, and solving problems means that our field will go to a higher level.
Now that we have a space station on the agenda, there are rumors that in the next 10 years or so, China will hopefully be able to complete the space station and the moon base.
Naturally, I believe that our motherland has the ability to do so, and I also believe that China will definitely become the backbone of leading the progress of civilization at that time.
As a Chinese citizen, I am extremely proud.
Information sources:
Beijing Daily———— Chang'e-6 landed on the back of the moon, the Ministry of Foreign Affairs: A historic step in China's outer space exploration
CCTV News———— How did Chang'e-6 fall on the moon? How to choose a landing site?
END