Chapter 416

Almost half an hour later.

Gu Lu and Wu Zheng, who simply had a supper, took the elevator back to the command center on the twenty-first floor.

Inside the ground command center.

After Wu Zheng went out, the depressing atmosphere finally eased a lot.

A staff member and a few colleagues were handing out cups of coffee bought from the coffee shop downstairs.

Gu Lu followed Wu Zheng to the front of the command platform.

"How long is it until the next probe arrives on the far side of the moon?" Wu Zheng asked in a flat tone.

"Twenty minutes and seven seconds!" replied a data monitor.

Wu Zheng nodded slightly, "Pay attention to the movement of the detector in real time, and notify me and Professor Gu when it arrives at the back." ”

"Yes!"

"Let's find a place to rest. Wu Zheng turned his head to look at Gu Lu.

Gu Lu nodded.

The two of them found an empty seat and sat down.

With this bit of effort, Gu Lu also took the opportunity to squint for a while.

In a daze, Gu Lu felt that his shoulder was gently patted.

The consciousness of Gu Lu's brain instantly sobered up.

Looking at Wu Zheng standing in front of him, Gu Lu asked, "Is it that the probe has run to the far side of the moon?" ”

"There's a minute left. Wu Zheng spoke softly.

Gu Lu sat up straight and looked at the big screen in front of him.

Really......

The big screen presents a pitch-black scene.

This is a sign of a signal outage.

At the same time, it means that the probe has been run to the far side of the moon.

Gu Lu immediately got up, "I'll check the location coordinates again immediately!"

"Trouble. ”

"At this time, you don't have to be polite. ”

Gu Lu laughed, then sat down in front of a computer, called up the complete topographic map of the far side of the moon that he had just taken, and began to review it in an intense and orderly manner.

"No problem!"

"It's still okay this time!"

"The result is the same as last time, this coordinate is correct!"

……

After verifying it more than a dozen times in a row, Gu Lu still didn't find any mistakes.

Moreover, Gu Lu has set a fault tolerance range.

As long as the probe runs smoothly according to the preset parameters, even if the descent point is slightly off, the probe will still successfully land in the von Karl impact crater.

It's just that the landing position will be a little off.

It's not a big deal.

"Is this the data?" Wu Zheng looked at Gu Lu.

Gu Lu nodded, and his tone was affirmative, "That's right, it's these data." ”

"The coordinates of the descent of the Chang'e-4 probe are (54.9 °S, 155.3 °E), and the inclination of the descent is 10.25 degrees. ”

"10 minutes and 27 seconds after the Chang'e-4 probe enters the far side of the moon, it will reach the sky above the coordinates of this position (54.9°S, 155.3°E). ”

Wu Zheng understood what Gu Lu meant, "That is to say, after the probe enters the far side of the moon for ten twenty-seven seconds, and after reaching the sky above the predetermined coordinates, it will descend at an angle of 10.25 degrees!"

Gu Lu nodded, "That's right, I've tested it nearly twenty times, and there won't be anything wrong, it's this data!"

And this is Zhang Min who also walked over from the side, "Chief Engineer Wu, I have the same result as Professor Gu." ”

"Okay. Wu Zheng nodded, "I'll have people enter this data into the GNC system right away." ”

After saying this, Wu Zheng left in a hurry.

Gu Lu looked up at the big screen in front of him.

On the large screen, judging from the displayed screen, the Chang'e-4 probe is less than five minutes away from being completely transported away from the far side of the moon.

And next time.

When the probe returns to the far side of the moon, the moon landing will begin.

Although it has been simulated dozens and hundreds of times.

But at this time, no one is saying that there will be 100% certainty.

Because anything unexpected can happen.

…………

Five minutes later.

Wu Zheng held the microphone tightly and spoke loudly.

"Attention of all departments, in one hour and ten minutes, the Chang'e-4 probe will officially enter the moon landing stage, please prepare in advance. ”

"I repeat, the Chang'e-4 probe will land on the moon in one hour and ten minutes, all departments please report the situation of the probe at any time to ensure the perfect progress of the lunar landing!"

Inside the command center, researchers and experts looked up with serious expressions on their faces.

"Yes!"

"Yes!"

……

A series of responses rang out.

Once again, the entire command center was extremely busy and busy.

The expressions on everyone's faces were all tense, and they devoted themselves to their respective posts.

The people in the entire command center are clear.

Whether they succeed or fail.

Today is sure to be a day that will go down in history.

Merely......

They want their role in the history books to be that of a successful person.

And not the losers who have learned from it by future generations!

Gu Lu stood beside the bed and looked up at the window.

In the night sky, a full moon is dotted and surrounded by many stars.

And just above the moon, which Gu Lu couldn't capture with the naked eye, a probe was orbiting, seeking the right time to land.

"By all means...... It's going to be successful!"

Gu Lu's fists clenched.

…………

Twenty minutes to the moon.

"All departments report the situation!" Wu Zheng said in a deep voice.

"The propulsion system is normal!"

"Signal reception is normal!"

"The TT&C data transmission system is normal!"

"The navigation control system is working properly!"

"The thermal control system is normal!"

Wu Zheng's eyes were firmly fixed on the big screen.

In the large screen, it can be clearly seen that the Chang'e-4 probe is getting closer and closer to the far side of the moon.

A hint of firmness flashed on Wu Zheng's resolute face, "In that case, everything will be executed according to plan." ”

"Twenty minutes later, the probe will begin to fall on the moon!"

"I want the far side of the moon to be planted with the flag of our country!"

Everyone responded in unison: "Yes!"

…………

Ten minutes later.

The Chang'e-4 probe sailed into orbit on the far side of the moon.

The picture displayed on the large screen suddenly went black again.

Quiet, long silence.

The entire command center was instantly quiet and terrifying, and at the same time oppressive and terrifying.

Everyone was silent, looking up at the pitch-black screen.

Gu Lu stood beside Wu Zheng, holding his arms with both hands.

Although Gu Lu was already trying his best to stay calm, his palms were still sweating.

Then.

There are 10 minutes and 27 seconds left before the probe lands on the far side of the moon.

Yenching time, December 27, 5:43:45 a.m.

The probe drove to the far side of the moon.

5:47:58 p.m.

The command center received the signal from the probe again, and the large screen of the command center showed a picture.

However, the picture presented on the big screen now is only the state that the detector was in four minutes and thirteen seconds ago.

And now the Chang'e-4 probe is only six minutes and fifteen seconds away from landing over the predetermined point!