A big country of aerospace with black technology

The Shenzhou-2 manned spacecraft first flew in an elliptical orbit with a perigee of 200 kilometers and an apogee of 300 kilometers.

This is mainly done from the perspective of saving energy.

Although the thrust of the Hongyan rocket is great, the thrust is not unlimited after all.

Every gram of a rocket needs careful consideration.

It can save a lot of fuel consumption and greatly improve the on-orbit time of manned spacecraft.

The night of the rocket launch, at 21:00.

The Beidu flight control center injects orbit change instructions into the manned spacecraft through Yuance 2 on the Pacific Ocean.

The four high-thrust engines above the propulsion cabin started to work, and continued to adjust the flight angle and speed of the spacecraft.

Because the altitude at the time of adjustment is at the apogee on the elliptical orbit, less fuel is required.

The propulsion module of the manned spacecraft worked very efficiently, and the orbit change was completed within a short period of time.

Compared with Shenzhou 1, Shenzhou 2 needs more space experiments.

The main purpose of Shenzhou-1 is to test the reliability of the launch and recovery system, and there are not many experimental projects.

Inside the orbital module, there are a large number of experimental equipment loaded.

It includes a multi-station space crystal growth furnace used to verify material production experiments in microgravity and a supporting crystal growth observation device.

Because Shenzhou II is still an unmanned spacecraft, these experimental equipment are all produced automatically.

In addition to the crystal growth furnace, what is more important is the widely concerned cell "space wedding" - two space cell fusion experiments of animal cells and plant cells.

They are the fusion experiments of B lymphocytes and myeloma cells used to explore pharmaceuticals, and the fusion experiments of the protoplasts of Nicotiana japonica and innovative No. 1 tobacco.

The main thing is to explore new methods of space pharmaceuticals. After all, the microgravity in space is difficult to achieve on the ground.

These devices are the first time to go to the sky, so their working status is also the most concerned by everyone.

"Has crystal growth of our superalloy started?"

Zhang Xingyang asked curiously, and Su Xiao, who had been in contact with the flight control center, asked.

The crystal growth furnace on the manned spacecraft needs to grow many materials, including: semiconductor optoelectronic materials, oxide crystals, metal alloys, etc.

The Inconel superalloy used by Rocket Research Institute in the YF-100 rocket engine and WS-10 aero-engine turbine disk was included in this experiment.

The microgravity environment in space allows the crystals in the growth furnace not to be affected by the gravity of the earth during the growth process.

It can grow uniformly and have a more perfect crystal structure.

However, because it is an unmanned spacecraft, everyone still has some doubts about whether it will succeed.

"Ten minutes ago, they just said that the experiment had started."

Su Xiao's answer did not contain any useful information.

"Space growth furnace detection device, has the data returned?"

Although there is no way to control the process of materials in the space growth furnace, the growth process of crystals can be observed.

Then analyze the situation in the process of crystal growth, and provide a theoretical basis for the subsequent performance analysis.

"It hasn't been sent back yet. Judging from the reply over there, it will take a few days to get the data."

Su Xiao told Zhang Xingyang the result of the previous communication with the center.

"Okay, after the data is sent back, notify me as soon as possible."

Although there was no way to get the data immediately, Zhang Xingyang was not too angry.

He also knew that various centers were conducting various experiments at this time, especially the orbit observation of the manned spacecraft by the flight control center was more important than their experiments.

With limited data transmission capacity, it is natural to give priority to meeting their needs.

And their superalloy crystal growth experiment, even if the data is obtained later, there is no problem.

To say that the most important thing that the flight control center pays attention to now is the manned spacecraft itself.

The flight orbit of the spacecraft is in a circular orbit of 300 kilometers, and the gravity of the earth at this height can still have a considerable impact on the orbit of the spacecraft.

Among the scheduled test items of the spacecraft, during the first six days, the spacecraft will not turn on the engine of the thrust chamber to maintain its orbital altitude.

This is also to test how much the earth's gravity will affect the spacecraft.

Although the theoretical daily deviation value can be obtained with a little calculation, the actual situation is always the most complicated.

Without actual testing, no one knows what the real deviation would be like in space.

In space, in the space growth furnace in the orbital module, superalloys are slowly growing.

But what is more eye-catching is the space cell fusion experiment.

After all, in many film and television works and street stall literature these days, there are many scenes about creatures entering space and then mutating under the action of cosmic high-energy rays.

With such preconceived notions, many good people are discussing whether the new cells born after cell fusion will mutate.

What's more, it is believed that human beings should not enter space. After entering space, the genes of the human body will mutate and produce deformed offspring.

Especially in various hero comics and anime, many superheroes are mutated after being irradiated with high-energy rays.

However, those who really understand the situation know that the orbital module is the place where astronauts live and work in the sky.

It has a sufficiently thick radiation shielding layer to protect against various radiation effects.

Otherwise, it is very likely to cause considerable damage to the body during the irradiation of cosmic high-energy rays.

Therefore, the experiments carried out in the orbital module will not be affected by cosmic rays. The relatively large impact is actually the microgravity environment!

Six days later, the flight control center had obtained enough orbital data and began to inject orbital change data into the spacecraft.

The propulsion engine of the spaceship started to work, slowly raising the height of the spaceship.

After several times of rising and setting of the sun, the spacecraft began to maintain its altitude at an altitude of 300 kilometers.

"Brother Xingyang, the data analysis of the space growth furnace is finished."

At the Material Experiment Center of the Rocket Research Institute, Su Xiao handed over the latest material analysis report to Zhang Xingyang who was beside him.

After receiving the report, Zhang Xingyang quickly flipped through it.

Basically, we understand the growth process of superalloy crystals in a microgravity environment.

In the growth furnace, in the ground environment, buoyancy convection caused by gravity is difficult to avoid, so during the crystal growth process, the solute transport process and the interface characteristics between the crystal/solution will be greatly affected , which in turn will affect the size and quality of crystals.

However, under the microgravity environment in space, because the influence of the earth's gravity is very small, the phenomenon of gravitational settlement will not occur, and the aggregation between particles will be inhibited.

In the growth furnace, the number of crystal nuclei that can spontaneously nucleate is also greatly reduced, so it is easier to grow larger-sized crystals.

The purity of the crystal will also be greatly improved.

Judging from the situation in the report, although it has not reached the crystal growth furnaces placed in high orbits and in a near-zero gravity environment in later generations.

However, judging from the current conditions, the gap with Zhang Xingyang's expected data is not particularly large.

"Do you think such data is considered good?"

Seeing Zhang Xingyang who was still flipping through the report, Su Xiao asked.

As the person in charge of the Material Experiment Center, Su Xiao has also grown a lot in the past few years, but she also knows it herself.

In front of Zhang Xingyang, his level was as dim as the stars before Haoyue.

"Judging from the data alone, the crystal structure grown is better than when we were on the ground."

After Zhang Xingyang finished reading the report, he put a thick dozen of papers under the desk, looked up at Su Xiao and said.

"Basically, it has reached the level I expected."

At this time, Su Xiao also breathed a sigh of relief.

Being able to get such an evaluation from Zhang Xingyang shows that there is nothing wrong with his material formula.

The material formula this time was mainly developed by Su Xiao.

After all, Zhang Xingyang has a lot of major projects on his shoulders, and he doesn't have so much time to stare at such sub-projects.

At most, it is just to set aside a little time at some critical nodes to look at the progress of the project.

"That's good."

Su Xiao said with a relaxed expression at this time.

"However, at most we are exploring production in a microgravity environment."

"Practical application, it should be far away."

The simulation of the microgravity growth environment on the ground is still a relatively difficult subject to study.

Everyone in the world is basically in the groping stage.

"In fact, there are still many ways to achieve microgravity crystal growth on a large scale."

Zhang Xingyang is more optimistic, at least he has a lot of ideas.

"According to the different routes, there are probably two ways."

"The first is to find a way to build a large-scale orbital crystal growth furnace cluster on orbit."

"There are mainly two difficulties in this route. One is that if we want to mass-produce, we must build a large-scale space station. This is still a certain degree of difficulty for us."

"Another difficulty is that in order to maintain such a huge space creation, a large number of astronauts are required to carry out maintenance work in space."

"This point is also difficult for us."

"So this technical route is very difficult to get through!"

When Su Xiao heard this, his heart turned cold.

"Then we can only wait for decades before we can mass-produce it?"

Zhang Xingyang looked at Su Xiao strangely, wondering how she came to such a conclusion.

"It doesn't take decades, it's enough to go this way for at most ten years."

"Of course, there are faster ways."

"any solution?"

At this time, Su Xiao was also a little curious about what kind of solution there was.

"You also know that the advantage of microgravity is that the buoyant convection caused by gravity no longer exists."

"Then if we want to get the same growth effect as in space, we only need to start with buoyancy convection."

"For example, the magnetic field can be strengthened outside the growth solution to weaken the gravitational settling and buoyant convection in the solution during crystal growth."

Hearing the technical method Zhang Xingyang said, Su Xiao's eyes lit up.

Yes, since buoyancy and convection have the greatest impact.

Then think of a way, wouldn't it be good to remove it!

In fact, Zhang Xingyang did not mention the disadvantages of this technology.

First of all, a strong magnetic field will slow down the crystal nucleation, and the production efficiency will also slow down, hindering the crystallization process, resulting in a greatly increased crystal growth time.

Secondly, it is not so easy to achieve a strong magnetic field and requires a lot of advanced equipment.

Zhang Xingyang didn't mention these bad things, because he didn't want to take such a technical route at all.

He is still more optimistic about the plan of the space production base.

Just when Zhang Xingyang and Su Xiao were communicating on the ground about future material production methods.

The manned spaceship keeps using the engine on the propulsion module in space to maintain its altitude.

The solar and cosmic celestial body high-energy radiation monitor in the orbital module started its own work.

Because the earth is protected by the atmosphere, most of the various high-energy rays from space will be absorbed by the atmosphere.

This is also an important reason why the creatures on the ground can grow up healthily.

But it is also true that it is basically impossible to detect cosmic rays on the surface.

If you want to actually detect cosmic rays, the best way is to bring the test equipment into space and conduct field tests.

The cosmic celestial body high-energy radiation monitor continuously records data, and records the intensity of various radiations detected in the data box in the cabin.

The data box adopts a special reinforced design, allowing it to withstand the extreme conditions during the recovery process without losing the internal data.

The on-orbit time of Shenzhou-2 far exceeds that of Shenzhou-1, reaching an astonishing 20 days.

This is mainly due to the fact that the thrust of the Hongyan rocket is large enough, the manned spacecraft can carry more experimental equipment, and the engine of the propulsion module can carry more fuel.

Maintain the orbital altitude of the spacecraft for a longer period of time

Shenzhou-2 compared to the previous Shenzhou-1. A lot of on-orbit experiments have been added, and when Shenzhou-1 was launched, everyone was most concerned about whether the spacecraft could be successfully sent to orbit.

Not particularly concerned about other aspects.

On January 25, after 20 days of flying in orbit and 324 revolutions around the earth.

The return capsule turned into a meteor and returned to the Amugulang grassland.

After recovering the simulated astronauts, experimental equipment, and various seeds in the return capsule.

The mission of Shenzhou II was a complete success.

Next, manned spaceflight will enter the most important hurdle.

Shenzhou III will take the first domestic astronaut into the sky.

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