Chapter 422

The landing site is not the von Kármán crater?

The person in charge of the propulsion system suddenly widened his eyes after hearing Gu Lu's words.

He seemed to understand something instantly, and asked eagerly, "Gu ...... Professor Gu, did you change the landing site?"

Gu Lu helplessly spread his hands.

"There's no way around it. As you said, the probe will not be able to operate above the von Kármán crater at all during the hovering phase!"

"The only solution, only, is to change the landing point of the detector!"

The person in charge of the propulsion system swallowed fiercely and sighed at Gu Lu's boldness.

"Then Professor Gu, where did you change the landing point?" the person in charge asked in a hurried tone.

"Here!"

Gu Lu pointed his finger at the computer screen.

The person in charge looked in the direction of Gu Lu's finger, and then his face instantly turned ugly.

"Professor Gu, the area you are referring to seems to be a mountain range, how can there be a place where the probe can land?" said the person in charge.

"You zoom in. Gu Lu said lightly.

The person in charge manipulated the mouse suspiciously, enlarging the area.

until magnified tenfold.

The person in charge of the propulsion system found a crater from the topographic map, and the impact crater in the middle of it!

He turned his head to look at Gu Lu in surprise, with inquiry in his eyes.

Gu Lu nodded lightly, "That's right, the landing site is there!"

"But the diameter of this crater is not even two hundred meters!" The person in charge had a gloomy face, and he couldn't say how good he was.

"No, to be precise, the diameter of this impact crater is only 105.21 meters, and the range that can be used for the probe to land safely is only 61.25 meters in diameter!"

The person in charge's face turned pale instantly.

He grabbed Gu Lu's shoulders and asked, "Why did you choose this place to land, I think, you shouldn't be unaware of the difficulty of landing here!"

Gu Lu stared at the other party closely, and his momentum did not show weakness at all, "Do you think I don't want to, the reason why I chose this impact crater as the landing site is because this is our only choice!"

"The only option, you know?"

After hearing this, the person in charge let go of Gu Lu's shoulder and sat down on the chair opposite Gu Lu with a dejected expression.

"How sure are you?" the person in charge suddenly asked, after a few seconds of silence.

Gu Lu was also silent for a long time, "As long as the entire operation instruction runs perfectly according to my design, then there will be ninety percent! But even if there is a slight deviation, it will be less than one percent, or, even lower!"

"It's time to hover!" someone yelled in the command center.

Gu Lu and the person in charge of the propulsion system looked up at the same time.

in the big screen.

The probe ends the approach segment and enters the hovering segment.

Under the inexplicable expressions on everyone's faces, the detector in the hovering section did not move in the direction of operation designed by the original operation instructions.

But......

Fly in a completely different direction.

But that direction is not the predetermined landing point at all, the direction where the von Kármán impact crater is located!

Everyone turned their heads to look at Gu Lu in surprise.

Gu Lu just smiled faintly and didn't speak.

Just in the next second.

On the large screen, the red marker used to mark the location of the probe disappeared from the von Kármán crater and appeared in a completely different direction.

And the probe is now heading towards the new red marker.

All of them are professionals in the field of aviation.

Considering the problem that everyone had worried about before, the probe could not run above the von Kármán impact crater during the hovering section, everyone instantly understood Gu Lu's intentions.

If they guessed right.

This Professor Gu should have changed the landing point of the detector!

The atmosphere in the entire command hall instantly relaxed.

Smiles began to appear on everyone's faces.

Once again, they saw hope.

It seemed that victory was in front of them.

Wu Zheng stood in front of the command platform and said to an assistant on the left-hand side, "Enlarge the terrain at the red sign." ”

Wu Zheng was not as optimistic as everyone else.

Wu Zheng faintly guessed that the place chosen by Gu Lu was not a natural result.

And most likely, a forced choice!

Really......

When the terrain around the new landing point is magnified and presented on the large screen, the relaxed atmosphere in the entire command center is instantly swept away.

Everyone stared wide-eyed and stared at the big screen in front of them in a daze.

I want to say something, but I can't say anything.

Impact crater with a diameter of one hundred meters!

And the actual range that can land the probe must be even smaller than this area!

That margin for error would be horribly low!

Or rather...... It's almost impossible!

Because that requires 100% precision.

The probe is in an extremely unstable state after experiencing an impact of space debris in orbit around the moon.

If the landing site only has such a large diameter range.

That means:

Even a slight deviation of 0.01 angles is not allowed.

Such a set of operating instructions.

Even if everyone in their command center got together, it would take at least a day or two to come up with such a set of operational instructions.

And there is no guarantee of 100% success.

And what about Gu Lu?

There is only one person, seventy-two seconds!

It seems that this is almost an impossible task for Gu Lu.

Gu Lu had already created a lot of miracles just now.

This allowed the probe to successfully complete the rapid adjustment phase and the approach phase even when the two engines were damaged.

But at this time......

In the entire command center, no one would believe that Gu Lu could successfully land the probe into an impact crater with a diameter of only 100 meters.

No!

There is another person who believes in Gu Lu.

That is Wu Zheng.

From beginning to end, Wu Zheng always believed in Gu Lu.

Gu Lu has created many miracles.

So what's the harm in creating one more!

............

in the big screen.

According to the trajectory designed by Gu Lu, the detector slowly runs to the top of the new landing point in the hovering section.

The hovering segment ended, and engine four went off.

Next, only the last two of the six stages of the moon landing process remain.

obstacle avoidance section, as well as a slow descent section.

The next second after the hovering period ended, the Chang'e-4 probe began the obstacle avoidance process, avoiding the many towering mountains around the crater.

Next, the probe enters the slow descent stage, the final stage of the lunar landing process.

At the same time, this stage determines the success of the entire Chang'e-4 lunar exploration program.

Engine No. 3 was activated, and the reverse thrust was used to continuously reduce the falling speed of the probe.

At the same time, the No. 4 engine used the little fuel left to constantly adjust the angle of the probe to the center of the impact crater.