"Well, the next project, return to Earth."

Tang Chao pointed to a row of spaceships and said to the interface.

"Yeah! It's finally time to drive the spaceship!"

"I have learned a lot just now, see me make a perfect landing for you!"

"Haha, I feel that I must be the first to land!"

"Not only do I have to land, I have to land a ten ring!"

"Just blow it, I guess I will also land a nine-ring."

Looking at the chattering people, Teacher Du strictly followed Tang Chao's test procedure and acted as an assistant.

"Okay, listen to the main points I explained, three people in groups of one return cabin..."

Seeing everyone being arranged to enter the return cabin, Tang Chao smiled.

"I want to land safely, even a tenth ring. It's beautiful. The landing process is used for unexpected demonstrations."

The previous space experience and ground training equipment experience are directly through a door, which is regarded as the kind of directly cutting the scene. This time it is for them to experience the feeling of atmospheric reentry.

After all, after training so much and experiencing so many feelings, I have to "real" fly once.

When performing missions, astronauts need to manipulate various instruments and equipment, but the various equipment in the spacecraft are countless, especially the early spacecraft control interface, which used to be all buttons.

If the astronaut makes a little mistake during the operation, especially the pilot, it is very likely that the aircraft will be destroyed.

Therefore, astronauts must train in various simulation equipment on the ground before driving real space equipment into space, so that astronauts can be familiar with the operating procedures and adapt to different environments.

But when it comes to "different environments," the environment in which spacecraft simulation equipment and real spacecraft are located is different, and there is an insurmountable gap here.

It is not only the problem of the gap, but also various dangers that may appear at any time. In the history of human spaceflight, many astronauts sacrificed in the simulation capsule.

Du Kangsheng has used a similar simulation cabin before. Don’t look at him memorizing the control process and button positions, but he really entered the cockpit of the orbital shuttle, especially after the orbital shuttle entered space. It feels completely different.

This time he entered the virtual space for experience. He experienced both the ground simulation cabin and the "space simulation cabin". A comparison between the two sides, good guy, it is really a sky and an underground.

Compared with ground simulation equipment "propaganda", it provides astronauts with various sensations such as motion, vision, hearing and manipulation load, so that the astronauts feel that they are really driving a spacecraft. The simulation cabin in virtual space is called real simulation. cabin.

It directly simulates a full set of projects, such as simulating the take-off of the spacecraft, how to control its orbit and attitude, space docking, space maintenance, and out of the cabin. The whole process made him, a real astronaut, think he was driving a real spacecraft.

The training effect is quite "explosive".

Well, the spacecraft that everyone was riding in exploded after entering the atmosphere.

Fortunately, the explosion was not large, but it only caused the spacecraft to deviate from the landing route and the parachute also had problems.

"Ahhhhh, why is my return pod keep turning around, where are we going to land?"

"I don't know~ Dao, all I know is that I'm going to throw up, eh..."

"Fuck, don't you vomit!"

"Alarm, alarm, falling too fast!"

"There is a large forest below us, I don't know where it is, what about the other return cabins?"

"I am the sea, I don't know where it is!"

"A piece of whiteness, it should be snow! Slot!"

"I'm here... Zi, communication is interrupted!"

………………

During the emergency return process, the manned spacecraft may land under various complex terrain, climate and other harsh living environment conditions, such as cold regions, deserts, mountains, forests, and seas. Therefore, astronauts must survive in these areas. The training of knowledge and skills enables them to be familiar with and master the climate change, topography, sea conditions, animal and plant conditions in these areas, and master the basic essentials for survival.

For example, to survive in cold regions, it is necessary to maintain the thermal balance of the body, to survive in the primeval forest to defend against the invasion of beasts and insects, to survive in the desert is to maintain a balance of water and salt, and so on.

Because the landing location of the manned spacecraft is difficult to control, especially the large dispersion of the landing points during emergency return, this makes the rescue of the astronauts difficult, let alone accidentally completely out of the scheduled landing area.

Therefore, the manned spacecraft will be equipped with personal life-saving products for the rescue and survival of the astronauts while they are waiting for rescue.

There are distress contact items in personal life-saving products, so that astronauts can use them to get in touch with rescue personnel as soon as possible. These items include radio communication and positioning devices, flare guns, firework tubes, sea water dyes, flashing lights, reflectors, fire-lighting items, and whistles. Flute, cold-proof and sun-shading items, etc.

When the spacecraft returns to land in a cold area or splashes into the water, the astronauts wear cold-proof suits or anti-immersion suits to wait for rescue to prevent the massive loss of body heat in a short time and prolong the survival time.

When the astronaut returns and splashes into the water, there are floating devices, such as life rafts or portable floating devices, to support the human body to float on the water, waiting for salvage and rescue.

Commonly used portable flotation devices include carbon dioxide cylinders, floating bags, blowing tubes and other accessories.

When the astronaut splashes into the water, the inflatable rope is pulled, the firing pin pierces the sealing film of the gas cylinder, the carbon dioxide gas is filled into the floating bag, and the floating bag inflates.

Of course, the mouth can also be used to inflate into the floating bag through the inflation tube, which is very sour.

Life-saving food, drinking water and first aid kits are also very important personal life-saving products. For landing in high temperature areas, it is very important to ensure that astronauts have a certain amount of drinking water.

Other personal survival items include pistols, shark repellents, fishing gear, filters, compasses, self-defense knives, wire saws, dry fuel, heaters, and windproof matches.

These were originally necessary training subjects, but Tang Chao didn't let them do the training. The theme this time was "experience" and "testing", so it doesn't matter what training is, the real warriors are all directly involved!

Of course, you have to do it in the virtual world. After all, the real world is easy to die. An astronaut is worth a thousand dollars, and you can't mess around.

Let the company executives experience the reality of the virtual world, and naturally they will not hang up in the virtual world, so don't look at the whispering in the sky, and eventually all the return cabins landed on the ground "safely".

And the distance between everyone will not exceed one kilometer.

In other words, the snow, forest, sea, desert, grassland, mountains and other environments they saw before are all within one kilometer, and this stuff can only be done in the virtual world.

But even if they landed, this excitement is unprecedented, even more exciting than bungee jumping.

Fortunately, they were not far away, and there were radio communications, positioning devices and flare guns in the survival equipment, which quickly gathered people together.

When they gathered together, they walked through their respective environments, and through personal experience, they also found a lot of "untrue" evidence.

Those evidences point out that this is a virtual world, not a real world. They are more like crossing into a game world.

Modeling technology is more advanced, and the world is more realistic, but it is always limited by hardware.

For example, when they step on the grass and the beach, they feel their feet feel soft, but in fact it is not the feedback from the ground, but the "feedback" of their feet.

As far as current computer technology is concerned, the scene where every grain of sand on the beach is a separate individual can also be created, but the physical collision between them takes up a lot of computing resources, and 100,000 people and millions of people can be online at the same time. In the data center, only a few hundred or a few thousand people can be online at the same time.

So Tang Chao took a clever. The sand is still that sand. From a distance, it looks like a clear grain. You can even reach out and grab a handful of sand.

But in fact, the entire sandy land is integrated and extremely strong. Only specific places or places where hands and feet interact will adopt a more realistic physical state.