I ask you to build tractors, but you build rockets?

At 15:36 Beijing time, the live broadcast of Shuguang 3 has been in the surround state for a long time, and I have been listening to the exchanges and interactions between the studio guests and the host.

Just when people were getting a little impatient and couldn't wait, half of the screen switched to the ground command center, and an order was issued from here.

"Lander detached!"

In the other half of the footage outside the Dawn spacecraft, the lander connected to the front of the command module shook slightly, and then left the spacecraft under the influence of nitrogen.

Now that they have reached the vicinity of the Qom impact crater, they are ready to start slowing down.

Ding Jihua stared at the lander from the window, which was more than ten meters away. Now he was "the loneliest person".

"03, please confirm the 'full moon' posture."

"01, the visual posture is good, you can brake, you can brake!"

"Copy that, I'll start braking."

Since they were about to land on a planet with gravity, Zhang Zhiguang and Fang Lin were lying on their stomachs relative to the lunar surface at this time, and could clearly see the lunar surface through the observation window.

He pressed the "quick positioning" button on the navigation system panel, and the lander immediately requested the relative positions of the Dawn spacecraft, satellites, and lunar surface detectors at the same time. The three coordinates were displayed on the screen at the same time. If they are all green, it means The error is less than the recommended value and the automatic landing system can be entered.

confirm.

A three-dimensional simulation animation immediately appeared on the monitor, and three curves were generated starting from the lander. The blue one is the current shape of the moon's orbit, the yellow dotted line is the calculated landing route, and the current flashing green dotted line coincides with the blue line. It is the actual running trajectory.

After Zhang Zhiguang went back to confirm that Fang Lin and the items in the cabin were all fixed and intact and would not float around, he clicked "Execute" on the route displayed by the automatic landing program.

In the view of the camera outside the lander, the engine nozzle at the tail suddenly began to rotate. After a few movements, white smoke began to emit, and then the screen began to tremble.

At 15.57, the landing phase of the Shuguang-3 mission officially began.

The entire deceleration to landing process will take about 2 hours. During this period, multiple decelerations, braking and attitude adjustments will be performed. It is expected to complete the lunar surface landing around 18:00 in the evening.

Also at the same time, NACA finally announced the live broadcast time of the Altes-2 landing mission: 7 a.m. Aramco Central Time on July 4, which is 17:00 Beijing time.

This was an hour later than planned and was mainly spent on confirming the landing site and servicing the lander.

The landing sites of Artemis 2 and Dawn 3 are both near the Qom impact crater. The terrain around the impact crater is not flat, especially the gentle area outside the crater is not large.

The best location has been reserved in advance by Dawn 3. If Artemis 2 also lands there, the final scene will be the four astronauts staring awkwardly on the moon.

Therefore, the other location is not so good, and "Blue Moon" must be prepared to manually adjust the landing location.

The other thing was the lander inspection, which took a full three hours, and they didn't have a strong artificial intelligence robot to assist.

By the time everything was ready, it was already an hour beyond the originally planned time.

The mission progress has reached 90%, and only the last step is left.

…

"Dawn 2 guidance begins!"

"Yuegui 02 measurement and control is normal, and the descent rate is normal!"

"The Wutu signal is stable, and the drop rate is normal!"

At 17.39, all that was left in the ground command center was the continuous sound of broadcasts, and everyone was focused on the work in front of the screen.

Academician She looked up at the huge screen and clenched his hands tightly into fists.

Although the Shuguang-2 mission lander was a first-time success, he is still very nervous now.

The efforts of the past two years and the unprecedented investment of 50 billion yuan are just for this day.

Although the live broadcast of Artemis 2 has begun, it has not yet separated and started landing. The first place is already undisputedly its own.

Next to him, although Lin Ju was not so obviously nervous, his fingers were tapping on the table.

Everyone was silent, holding their breath in anticipation of what would happen in ten minutes.

Not only here, but also in cities, in villages, on ships, in scientific research camps in the Arctic and Antarctic, in space stations, and everywhere with human footprints, regardless of nationality, skin color, rich or poor.

Even just staring into space can free your mind from the constraints of place.

[Current altitude: 10 kilometers! 】

No. 14 fixed on the bulkhead provides real-time data broadcast to Zhang Zhiguang and Fang Lin in the ascender on the radio, constantly monitoring changes in the surrounding environment.

[Commander, the Shuguang-2 lander is about to start visual guidance, please be prepared for manual control! 】

Zhang Zhiguang sat calmly by the porthole. Now that the moon's surface has infinitely rich details, he has already felt the moon's gravitational effect.

After nearly four days of weightlessness, even one-sixth of the Earth's gravity makes people feel a little uncomfortable.

The stomach and intestines that had just adapted to zero gravity began to fall again due to gravity, and a slight feeling of nausea and discomfort began to appear. Fortunately, they did not eat much at noon and the food was almost completely digested, so it did not have much impact on the body.

He kept moving his fingers slightly, regaining the feel of the joystick, and stared out the window with all his concentration.

Although it is still in autopilot mode, the driving process for more than an hour is more tiring than flying a space shuttle. The lander cannot rely on the atmosphere to glide to land.

Below the position where the lander moved laterally, the radar and a lens about 20cm in diameter on the lander part of Shuguang-2 were slightly adjusting their direction. When the altitude dropped to 10 kilometers, it activated the guidance headlights.

Because the "Full Moon" has a split design, researchers have tried to find ways to maximize the use of the landing part left on the lunar surface. One of them is to equip it with an ultra-high-power guidance light that uses metal vapor to emit light, which is sufficient in a short time. Provides a pretty strong lead without being too harsh.

Zhang Zhiguang saw at a glance a tiny bright spot on the gray-white lunar surface. It was fainter than a firefly on the vast and blurry moon, but it was unique and firmly rooted in his field of vision.

[Current altitude: 5000 meters! 】

[...3500 meters, the estimated circular probability offset error is 180 meters, please pay attention! 】

【2000 meters! 】

After descending to this height, Zhang Zhiguang has already seen two small black spots next to the Shuguang-2 lander, which should be a lunar rover or a robot.

【500 meters! 】

In the HUD of the mask, Zhang Zhiguang had already seen that the current expected landing point was offset by about 150 meters from the planned point. He glanced at the 22% fuel remaining and pushed slightly to the left.

With slow movements of the already somewhat stiff wrist, "Full Moon" entered manual control mode, and the 12 external RCS devices began to eject gas and move diagonally toward the center of the plain illuminated by the searchlight at the bottom of the lander.

【200 meters! Drop rate 13.5, please pay attention! 】

[The automatic landing system is activated, please release the joystick! 】

On the satellite TV of the Presidential Palace, John saw the gray-white lunar surface in the live broadcast gradually zooming in from the rough surface with pits and pits, and the plains around the crater gradually increased. The lunar surface looked almost the same at high and low altitudes, as if it was very close at hand. , and it seems to be tens of kilometers away.

Only through the altimeter in the lower left corner of the UI and the lights of Dawn 2 can we know that the lander is still descending.

This dazzling scene didn't last long, and suddenly a cloud of gray smoke rose from the screen. With an obvious shaking, the screen was fixed on fine moondust and landing legs wrapped in gold foil.

At 17:52 pm on July 4th, Beijing time, the Shuguang-3 "Full Moon" lander successfully landed in the Aitken Basin of the Moon's South Pole and on a plain about 1.12 kilometers southwest of the Qom impact crater, 25 km away from the expected landing site. rice.