"Report to the command center, I'm in the return capsule!"

Yang Hongwei's loud voice sounded in the command center.

Accompanied by an instruction to allow return.

Ocean-going survey ships in the Pacific Ocean began to inject spacecraft return data into the spacecraft's control system.

Radio waves travel at the speed of light from the surface of the ocean into space.

The re-entry capsule, which flew with the orbital module for nearly three days in space, initiated the re-entry procedure.

Separation from the orbital module begins.

The orbital module, which is the carrier of many scientific research instruments, will continue to fly in space for another month to complete many pre-planned experiments.

After completing all the experimental projects, the manned spacecraft will return to the ground by means of a soft landing under ground control.

Returning to the capsule above the detached engine, ignition began.

Disconnect the connection between the re-entry capsule and the orbital module.

Because the process of astronauts returning to the ground is much more dangerous than flying in orbit.

And this time, the astronauts returned from space, which was broadcast live throughout the country.

Therefore, it is not only the aerospace workers involved in the return to the surface that are deeply worried about our astronauts.

Thousands of people who are in front of the TV are also praying in their hearts for the returning space heroes.

I hope he can return safely.

"I wish him a safe return!"

Zhang Xingyang, who was in the control center of the launch base, thought silently in his heart.

Of course, if you want to say that in this world, who is most worried about the safety of astronauts, it is naturally his relatives.

As the relatives of aerospace heroes, it is natural to feel honored.

But it is inevitable that I want to worry about my husband, my son, and my father.

In a village on the edge of Bohai Bay, a retired old couple is watching their son on TV.

While I was proud of him, I was extremely worried.

Although the two old men didn't know what the specific mission of their son was, they also knew that just going to space and then coming back would inevitably have to pay a huge price.

In fact, it is.

As the first Chinese person in China to take a manned rocket and go to space.

The rockets and spaceships that were ridden had some minor problems.

For example, when the rocket is launched and the re-entry capsule returns to the earth, there are strong vibrations and tremendous pressure.

These bad environments, although in the process of astronauts' rides, rely on their own spacesuits and good physical fitness, and carry over.

However, it still brought irreversible damage to the astronaut's body.

In later generations, even the domestic aerospace technology has completed great strides and can stay in space for a long time.

But as the first astronaut to go to space, he no longer has the way to go to the space he loves.

This has also become a big regret in his life.

"The return capsule propulsion starts, and the start is normal!"

After separating the engines and completing the separation between the re-entry module and the orbital module, the propulsion on the re-entry module was started.

Begin to adjust the angle and orientation of the capsule in order to allow the capsule to fall within the intended target range.

Similar to the shape of a warhead, the upper side is elliptical and slightly pointed, and the lower side is flattened, and the tail begins to spray blue-white flames.

The propulsion system of the return capsule uses an engine with relatively balanced performance in all aspects.

Therefore, in terms of specific impulse, combustion efficiency, etc., compared with other engines at this time, there is nothing particularly excellent.

But it's such an engine, but it has an advantage that no one else has.

That is, it is not as easy to break as other engines, and in more extreme cases, even if it is only the astronaut himself.

It was also possible to barely complete the repair of the propulsion system of the return capsule.

The manned re-entry capsule, although outwardly resembling the warhead of an ICBM loaded with numerous sub-warheads.

However, in fact, the performance indicators pursued by the two are also very different.

The manned return capsule pursues stability and safety, and the requirement is to be able to ensure the life safety of the astronauts in the process of returning to the earth.

In the process of returning, the astronauts in the cabin will not be harmed by the high temperature caused by the violent friction with the atmosphere.

As for the sub-warheads, in the process of re-entering the atmosphere, what is pursued is the ultimate speed and accuracy, and they must be able to complete high-precision strikes against several targets on the ground.

The re-entry capsule is in space, making a small half circle around the Earth, as it approaches the sky above the country.

Attitude control engine, ignition.

For the angle of the return capsule, a series of fine-tuning is made.

to ensure that the capsule can accurately return to the intended site.

When flying in the thin atmosphere of space, the speed of the re-entry capsule is very fast, like an accelerating bullet, shooting towards the earth.

However, the re-entry capsule was not able to maintain such a rapid pace all the time.

Soon, the re-entry capsule entered a more dense atmosphere.

The abundant atmospheric substances, in the violent friction with the re-entry capsule, constantly heated the shell of the re-entry capsule.

As a result, the material above the surface of the shell has reached a plasma state.

For manned spaceflight, this stage is also the most thrilling.

Because such a high-temperature plasma will have a strong shielding effect on the communication between the return capsule and the ground.

This is also a phenomenon that often occurs in the aerospace industry.

On the ground, the control center and the monitoring station lost contact with the return capsule for a while.

Although everyone knows that this is a normal phenomenon when the return capsule passes through the black barrier area.

But I still couldn't help it, and I was silently worried about the astronaut in my heart.

Especially the old couple sitting in front of the TV, after hearing that their son's return capsule had lost contact, they almost fainted directly.

Fortunately, the host then explained that this was a normal scene during the return of the spacecraft, and the two old men felt a little relieved, but it was only a hint.

Just as the people on the ground are praying for the safety of the astronauts.

Yang Hongwei, who was in the return cabin, felt extremely worried.

Before boarding the return capsule, Zhang Xingyang had specially explained to him.

During the re-entry process of the re-entry capsule, the temperature of the shell rises rapidly due to severe friction, creating patches of ablation marks on the outer portholes.

Let him not be afraid.

Originally, he didn't care, after all, in the past training, they had trained such a similar subject.

But it was only when he actually experienced it that he realized how terrible the process was!

In the process of returning, you watched as patches of yellow-brown ablation markings were rapidly born on the porthole of the return capsule.

At the same time, it was accompanied by a low, terrifying sound.

Like the echo of a demon, it echoed in his ears.

Even though Yang Hongwei repeatedly made psychological hints to himself, telling himself that these were all abnormal noises generated during the flight of the return capsule.

However, it is still physiologically and produces a series of discomforts.

But fortunately, the time for not being able to communicate with the ground is very short.

After a short while, the connection between the re-entry capsule and the ground command center was re-established.

"Yang Hongwei, how are you feeling now?"

As soon as contact was restored, the command center inquired about the physical condition of the astronauts.

"It's okay."

Yang Hongwei, after hearing the sound from the ground, the whole person also relaxed slightly.

The strange sound that kept lingering in my ears seemed to disappear.

After learning about Yang Hongwei's current state through the health monitoring system integrated in the spacesuit.

Many people in the command center were relieved.

"Ground search force, have you sent out?"

Zhao Tianming glanced at the landing time of the return capsule predicted on the big screen and asked the assistant beside him.

"The helicopter group and the ground search convoy have already set off."

The assistant said after checking the current location of the ground search force.

Both the helicopter brigade and the ground fleet are equipped with the latest launch of the Beidou positioning system.

It is possible to increase the positioning accuracy to the level of ten meters.

Hundreds of kilometers away on the grasslands.

Heavy snow has already begun to fall on the grasslands in October, which has had a certain impact on the driving of the convoy.

But fortunately, for helicopters flying in the sky, as long as there is no snowfall, then there is no impact.

A helicopter with a high-powered searchlight roared past a dark grassland.

"Grandpa, there's a plane!"

When Zoya heard the roar, she hurried out of the yurt, then pointed to the searchlight of the helicopter and shouted:

"Grandpa, come out and see!"

For children who live on the grassland for a long time, it is still interesting to see airplanes.

Habuji knocked on the dry tobacco pouch he was carrying, rolled the cigarette pouch, glanced at the helicopter that had been flying farther and farther away, and said lightly:

"Zhuoya, it's late."

"It's time for you to sleep!"

The old man ignored the fainter and fainter roar of the helicopter in the distance, and looked at the energetic little girl in front of him with a serious face.

After finally coaxing the little girl.

Habuji came to the stables outside the yurt, snuggled up to a tall horse, and watched the convoy that drove by from less than 100 meters away from his house.

He who had just read the news today knew that these people should be the same as before, looking for astronauts who are about to land.

It's just that the first few times, they could only find fake astronaut models, and this time it seems that someone really came back from space.

For the elderly Habuji, he didn't know what it was like to go into space.

But he knows that behind this, the country he lives in is getting stronger and stronger.

The achievements that those strongmen who once ruled and owned the grasslands were not able to achieve are now quietly happening in front of their own eyes.

The re-entry capsule streaked a fiery red light in the sky.

Those who have not yet rested, after hearing the news on the television that the re-entry capsule is about to land.

Or go out of the house or on the rooftop to see if you can see it with your own eyes.

However, in most areas, this scene is actually not visible.

Because of the flight trajectory of the return capsule, most of the area it flew through was no man's land in the northwest.

When the re-entry capsule is still some distance from the ground.

The helicopter brigade, as a visual search detachment, found the target at the first time.

"Report to the command center!"

"We've found the return capsule!"

"Repeat!"

"We've found the return capsule!"

It is not difficult for everyone in the command center to hear the irrepressible excitement and excitement from the voices of the reporting personnel.

Of course, it's hard not to be excited when you're actually in such an environment.

I'm glad to be part of what can be called a historic milestone.

The speed of the re-entry capsule is extremely high, and if the landing is carried out at such a speed, not only the re-entry capsule will be subjected to a great impact.

Moreover, the astronauts in this will also be seriously injured due to the huge impact, and they are very likely to die.

This has to rely on the deceleration system on the return capsule to slow down.

When there is still some distance from the ground, a large parachute on the top of the first return capsule will open.

A parachute as big as a football field opened in an instant, and the return capsule was instantly stunned, and the speed was greatly reduced.

Especially Yang Hongwei, who was fixed on the seat of the return capsule, could feel it.

If it weren't for the restraint of the seat belt on his body, then he would probably fly straight up at that moment.

But fortunately, the seat belt is very strong, which helped Yang Hongwei withstand the inertia after the parachute decelerates suddenly.

Although the parachute is capable of reducing the speed of the re-entry capsule from hundreds of kilometers per second, to tens of meters per second.

But even at such a speed, a direct landing may still cause greater damage to the astronaut's body.

Therefore, the gamma altimeter on the rocket was calculated to be only a few tens of meters above the ground.

The signal is transmitted to the thrust reverser engine at the bottom of the return capsule.

The thrust reverser engine's high-efficiency fuel, which exceeds TNT's performance, burns instantaneously and releases high-pressure gas.

However, Yang Hongwei, who was in the return capsule, only felt that under his buttocks, it seemed that a large firecracker had suddenly exploded, and even the return capsule seemed to be about to run upward.

Fortunately, the working performance of the thrust reverser engine is still not to be said, and the speed of the return capsule has been successfully reduced to one-tenth of the original.

The re-entry capsule landed smoothly on the Amgulang steppe.

Because of the targeted treatment this time, Yang Hongwei felt a burst of discomfort in the process of returning to the ground.

However, it did not have a big impact on his body, and there was no injury to the corners of his mouth.

The helicopter brigade was the first to arrive at the place where the return capsule landed.

The crew was doing their job, some were starting to open the door of the return hatch, others were closing the gamma altimeter with a lead lid.

Yang Hongwei was in good condition, and after the hatch was opened, he was even able to walk out of the cabin door by himself.

After waving his hand to the surrounding crowd:

"I'm out of the cabin and I'm in good shape!"

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(End of chapter)