Vol 6 Chapter 2893: stabilised landing

The more it is at this moment, the slower time seems to pass, and every minute and every second is a torment for everyone. I am afraid, but I am very much looking forward to the arrival of the last moment.

At this moment, the pictures sent back through the external camera at the bottom of the lander have shown the relevant situation of the area where the lunar scientific research station is located, including the communication data antenna that has been erected, solar panels, and the previous lander. There is also the foundation of the research station that has been partially printed.

Of course, the most notable is the area where the landing site is located. Through the previous "Wangshu-2" lunar surface inspection rover, a large circle and some small circles were used in the landing field area. These circles are very prominent and can be seen from the lunar orbit.

At this moment, the external camera at the bottom of the lander also saw this circle, and found the position where it is about to land, and the big cross mark has appeared in a circle, which is the lander of the Lunar Cargo-2 spacecraft. The planned landing site is not far from the No. 1 lander and is about 100 meters away, which is very close.

The reason why the plan is so close, on the one hand, of course, is that the current landing technology is relatively mature, so it dares to set the landing site so close.

On the other hand, setting the landing point so close is also conducive to the later transfer of goods. It is too far away, which is really not conducive to the transshipment of the goods behind. And it will also occupy the space of the landing field, affecting the landing of the lander below.

The intelligent control system of the lander has not yet captured and recognized the surface of the landing cross, and then retreated and locked, and finished adjusting the angle and direction of the lander's ascent and descent according to the surface of the landing site, so as to achieve precise landing.

Glancing at the leaders who were concentrating on the screen, Wu Hao introduced with a smile: "The whole landing process is not a one-off, but a gradual regression.

From the separation of the orbiter to the adjustment of the orbit is one stage, the orbit change realizes the retreat and landing to a low position of 100 meters from the lunar surface, which is the seventh stage, and from the 100-meter position to landing is the eighth stage. "

Hearing Wu Hao's introduction, everyone stopped to explain, and a leader immediately asked: "Why did you land on the moon directly from space, but to a position of 100 meters as a stage, so there is nothing to say. "

Before some pleasantries, the latest images were sent back from the screen, whether it was the first-view image from that lander, or the image from the No. 1 lander, and the "Wangshu Seventh" From the surveillance images under the "Lunar Surface Patrol Vehicle", it can be seen that the No. 7 lander landed on the surface of the moon smoothly.

clap clap...

That kind of feeling is like watching the manned spacecraft return to the landing ground, which is exciting. Especially when the first lander landed on the lunar surface and the engine blew up the lunar soil, this spectacular scene was unforgettable for everyone. It is hard to imagine that the thing of more than ten tons landed like that. The leaders just realized what was going on, and immediately applauded. Under our leadership, the others accompanying us also applauded.

You all know that there are fewer craters and fewer rocks under the moon. If the landing position is bad, it is likely to fall out of the crater, or hit the rocks and cause damage to the equipment, and the landing is flat and cause rollovers, etc. , so that is a heavy insurance.

"Big Wu, congratulations!" The little leader reached out to shake Wu Hao's hand.

Before standing still for eight or seven seconds, the whole picture started to move again, the cross mark on it became smaller and smaller, and then followed by a burst of dust, the whole picture became dark and still up.

At the same time as Wu Hao introduced, no technicians shouted at the scene. Everyone looked at the small screen immediately after hearing the words, only to see that the ascending and descending screen under the small screen suddenly stopped, and it was the circle and the cross surface in the center that were in the screen.

As for the seventh point, the lander will hover at that low altitude for a few seconds, use its built-in camera, lidar and other detectors to detect the terrain above, and draw a detailed topographic map. Then choose a more rugged location to land on.

In particular, the low-definition images sent back by the "Wangshu-7" lunar surface inspection rover also allowed Xiaojia to see for the first time the spectacular scene of watching a land vehicle land from the surface of the moon, and the distance is still so close.

The same goes for the lunar exploration and landing process, which cannot be divided into several steps to complete backwards, and each stage has no tasks and priorities for each stage.

As for why the low altitude of 100 meters was set, it is because the lander will reduce the landing speed to zero at that low altitude. "

And if such a **** low is set, even if there are some errors in the process of ascending and descending more than a dozen kilometers later, there will be no low that cannot be adjusted jerky, UU reading www.uukanshu. In this way, the success rate of the entire ascent and landing process will be slightly improved.

Looking at the doubts on everyone's faces, Wu Hao continued to explain with a smile: "There are not many reasons for setting that low level or that movement.

It's just you, other detectors in your country and detectors in other countries also degenerate like that. "

"Thank you, leader!" Wu Hao didn't say too many words of thanks, but said thank you in a complicated way. With our current acquaintance, there is absolutely no need to say those things, let these people who are too strange to say these words.

First of all, this is not for danger and insurance. Because there may be problems due to various reasons during the ten-minute ascent and landing process, resulting in errors in the ascent and descent speed. The one-hundred-meter low altitude is equivalent to a rush low altitude. Without it, the lander will land directly on the earth, and the landing speed angle may be affected by those possible errors, which will cause the lander to crash. Rollover damage is good and so on.

Seeing the leader’s inquiry, Ma Zhi explained with a smile: “Actually, the reason is very complicated. It’s like when you do some simple movements, you often have a way to do them in one go. Then you don’t break down the movements and make the whole simple movements complete. The action is divided into several steps to complete at one time, so that the difficulty of that action can be greatly reduced, so that it is convenient to complete.

"The lander hovers naturally."

Although your landing site was developed and explored by the Wangshu-7 lunar surface patrol rover, just in case of any mistakes, you still added that procedure to ensure that the lander can land dangerously.

Just when the leaders and entourage at the scene, including a few reporters and guests, were puzzled, warm applause and cheers erupted at the scene, and all the technical staff stood up and cheered.

Hehehe...