"Report to the command center that I have entered the return capsule!"
Yang Hongwei's loud voice sounded in the command center.
Accompanied by instructions granting permission to return.
The ocean survey ship above the Pacific Ocean began to inject the return data of the spacecraft into the spacecraft's control system.
Radio waves travel from the surface of the ocean to space at the speed of light.
The return capsule, which had been flying with the orbital module in space for nearly three days, started the return procedure.
Begins to separate from the orbital module.
As the carrier of many scientific research instruments, the orbital module will continue to fly in space for a month to complete many pre-planned experiments.
After completing all experimental projects, the manned spacecraft will return to the ground through a soft landing under ground control.
The separation engine returned to the capsule and began to ignite.
Disconnect the connection between the return module 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, and the whole process was broadcast live across the country.
Therefore, it is not just the aerospace practitioners involved in returning to the ground who are deeply worried about our astronauts.
Thousands of people watching in front of the television are also praying in their hearts for the returning aerospace heroes.
Hope he returns 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, the person in this world who is most worried about the safety of astronauts is naturally his relatives.
As a relative of an aerospace hero, I naturally feel honored.
But I also inevitably want to worry about my husband, my son, and my father.
In a village by the Bohai Bay, a retired couple watched their son on the TV.
While I was proud of him, I also felt extremely worried.
Although the two old men did not know the specific tasks of their sons, they also knew that just going to space and then coming back would inevitably involve paying a huge price.
In fact, this is indeed the case.
As the first Chinese in China to ride a manned rocket into space.
There are some minor problems with the rockets and spaceships we ride on.
For example, when the rocket was launched and the return capsule returned to the earth, strong vibrations and huge pressure were generated.
Although astronauts relied on their spacesuits and good physical fitness to survive these adverse environments during the ride, they were able to withstand them.
However, it still caused irreversible damage to the astronauts' bodies.
In later generations, even domestic aerospace technology has made great strides in development and can stay in space for a long time.
But as the first astronaut to go into space, he had no choice but to go to the space he loved.
This also became a big regret in his life.
"The return capsule propulsion is started, the startup is normal!"
After separating the engine and completing the separation between the return module and the orbital module, the propulsion on the return module starts.
Start adjusting the angle and orientation of the return capsule, trying to make the return capsule fall within the predetermined target range.
It is similar to the shape of a warhead, with a slightly pointed oval on the upper side and a flat return capsule on the lower side. 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 outstanding.
But this kind of engine has an advantage that others don't have.
That is, it is not as easy to damage as other engines, and in more extreme cases, even if it is only the astronaut himself.
It was also able to barely complete the repair work on the propulsion system of the return capsule.
Although the manned return capsule is very similar in appearance to the warheads of intercontinental ballistic missiles loaded with numerous missile 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 ensure the safety of the astronauts during the return to Earth.
During the return process, the high temperature generated by the violent friction with the atmosphere will not cause serious harm to the astronauts in the cabin.
As for the missile warhead, during the process of re-entering the atmosphere, what is pursued is the ultimate speed and accuracy, and it must be able to complete high-precision strikes against several targets on the ground.
The return capsule was in space, orbiting the earth for a small half circle, when it was close to the sky above the country.
Attitude controls the engine and starts ignition.
Make a series of fine adjustments to the angle of the return capsule.
To ensure that the return capsule can accurately return to the intended location.
When flying in the thin atmosphere of space, the return capsule moves very fast, like a continuously accelerating bullet, shooting towards the earth.
However, the return capsule cannot maintain such rapidity all the time.
Soon, the return capsule entered a height where the atmosphere was denser.
The rich atmospheric material, in the violent friction with the return capsule, continuously heats the outer shell of the return 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 high-temperature plasma will have a strong shielding effect on the communication between the return capsule and the ground.
This is also a black barrier phenomenon that often occurs in the aerospace industry.
Above the ground, in the control center and monitoring station, contact with the return capsule was temporarily lost.
Although everyone knows that this is a normal phenomenon when the return capsule passes through the black barrier area.
But he still couldn't help but worry silently for the astronaut among them.
Especially the old couple sitting in front of the TV almost fainted after hearing that the return capsule their son was riding in had lost contact.
Fortunately, the host then explained that this was a normal scene during the spacecraft's return process, and the two old men felt a little more relieved, but only a little.
People on the ground are praying for the safety of the astronauts.
Yang Hongwei, who was riding in the return cabin, felt particularly uneasy.
Before boarding the return capsule, Zhang Xingyang had specifically explained it to him.
During the return capsule's re-entry into the atmosphere, the rapid rise in temperature of the outer shell caused by severe friction will create patches of ablation marks on the outer portholes.
Let him not be afraid.
He didn't take it seriously at first. After all, they had trained on similar subjects in the past.
But only when he actually experienced it did he realize how terrifying this process was!
During the return process, you watched as yellow-brown ablation patterns quickly appeared on the portholes of the return cabin.
At the same time, it was accompanied by a terrifying low sound.
Like a demonic echo, it echoed in my ears.
Even though Yang Hongwei repeatedly gave himself psychological hints, telling himself that these were the abnormal noises produced during the flight of the return capsule.
But it still produces a series of physical discomforts.
Fortunately, the time when communication with the ground was not possible was very short.
After a short while, contact was re-established between the return capsule and the ground command center.
"Yang Hongwei, how are you feeling now?"
As soon as contact was restored, the command center inquired about the astronauts' physical condition.
"The condition is not bad."
Yang Hongwei relaxed a little after hearing the sound from the ground.
The strange noise that had been lingering in my ears seemed to have disappeared.
After learning about Yang Hongwei's current status through the health monitoring system integrated in Yang Hongwei's space suit.
Many people in the command center were relieved.
"Have the ground search troops been sent out?"
Zhao Tianming glanced at the predicted landing time of the return capsule on the big screen and asked the assistant next to him.
"Helicopter brigade and ground search convoy have already set off."
The assistant said after checking the current location of the ground search force.
Both the helicopter fleet and the ground fleet are equipped with the newly launched Beidou positioning system.
It can improve the positioning accuracy to ten meters level.
On the grassland hundreds of kilometers away.
Heavy snow had already begun to fall on the grassland in October, which had a certain impact on the movement of the team.
Fortunately, for helicopters flying in the sky, as long as there is no snowfall, there will be no impact.
The helicopter with high-power searchlights roared past a dark grassland.
"Grandpa, there is a plane!"
After Zhuo Ya heard the roar, she hurriedly ran out of the yurt, then pointed at the helicopter's searchlight and shouted:
"Grandpa, come out and take a look!"
For children who have lived on the grassland for a long time, seeing airplanes is still a very interesting thing.
Habuji knocked on his cigarette bag, rolled it up, glanced at the helicopter that was flying farther and farther away, and said lightly:
"Zoya, it's already very late."
"you should go to bed!"
The old man ignored the increasingly faint roar of the helicopter in the distance and looked seriously at the energetic little girl in front of him.
After finally coaxing the little girl to sleep.
Habuji came to the stable outside the yurt, nestled against a tall horse, and watched the motorcade passing quickly less than a hundred meters away from his home.
Having just watched the news today, he knew that these people should be looking for the astronauts who were about to land as before.
However, in the past few times, they could only find fake astronaut models. This time, it seemed that someone really came back from space.
For the elderly Habji, he had no idea what it was like to go into space.
But he knew that behind this, the country he lived in was getting stronger and stronger.
The achievements that those strong men who once ruled and owned the grassland could not achieve are now happening quietly before their eyes.
The return capsule drew a fiery red light in the sky.
Those who had not rested yet heard the news on the TV that the return capsule was about to land.
Or walk out of the house or go to 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 areas it flew through were uninhabited areas in the northwest.
When the return capsule is still a certain distance from the ground.
The helicopter brigade, as a visual search team, discovered the target immediately.
"Report to the command center!"
"We have discovered the return capsule!"
"repeat!"
"We have discovered the return capsule!"
Everyone in the command center could easily hear the uncontrollable excitement and excitement in the voices of the people reporting.
Of course, it's hard not to get excited when you're actually in the middle of something like this.
I am happy to be part of something that can be called a historical milestone.
The return capsule is extremely fast. If it lands at such a speed, not only the return capsule will suffer a huge impact.
Moreover, the astronauts involved will also be seriously injured due to the huge impact, and may die.
This requires relying on the deceleration system on the return capsule for deceleration.
When there is still some distance from the ground, the huge parachute on the top of the return capsule will open first.
A parachute as big as a football field opened in an instant, and the return capsule stopped instantly, and its 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 restraints of his own safety belt, he would most likely have flown upward at that moment.
Fortunately, the safety belt was very strong, which helped Yang Hongwei withstand the inertia of the parachute after it suddenly decelerated.
Although the parachute can reduce the speed of the return capsule from hundreds of kilometers per second to tens of meters per second.
But even at this speed, a direct landing may still cause serious damage to the astronaut's body.
Therefore, the gamma altimeter on the rocket measured that it was only tens of meters above the ground.
Transmit the signal to the reverse thrust engine at the bottom of the return capsule.
The high-efficiency fuel in the reverse thrust engine, which has a performance exceeding TNT, is burned instantly and releases high-pressure gas.
However, Yang Hongwei, who was in the return capsule, felt as if a large firecracker had suddenly exploded under his butt, and the return capsule seemed to be jumping upwards.
Fortunately, the performance of the reverse thrust engine was still good, and it successfully reduced the speed of the return capsule to one-tenth of its original speed.
The return capsule landed smoothly on the Amugulang grassland.
Because of the targeted treatment this time, Yang Hongwei felt waves of discomfort during the process of returning to the ground.
However, it did not have a major 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 landing location of the return capsule.
The staff were performing their duties. Some people started to open the return cabin door, and some were covering the gamma altimeter with a lead cover.
Yang Hongwei was in good condition. After the cabin door was opened, he was even able to walk out of the cabin door on his own.
After waving to the crowd around him:
"I have left the cabin and am in good condition!"
Please vote for me, please vote for me! ! !
(End of chapter)
