Ye Han immediately asked, "When will the earth send raw materials?" ”

Gao Kai, who had already put on a spacesuit, took off his helmet and hugged it in his hand: "The equipment that should be sent is in place, there are no special circumstances in the future, and we will not send raw materials and equipment to the moon again, we must solve it ourselves, so there is no absolute necessity, it is best not to move the printer." Pen, fun, pavilion www. biquge。 info”

Ye Han sighed helplessly: "Understood." ”

He didn't know how much equipment there was on the moon, and he didn't know what equipment there was, but there were at least hundreds of unopened spacecraft in the temporary base, and there must be a lot of equipment that should be there, and even necessary backups.

Gao Kai buckled his helmet and walked to the airlock: "Hurry up!" After saying that, he drilled into the airlock, the gate closed behind him, and there was a sizzling sound, and the extraction equipment quickly evacuated the air in the airlock, until the green indicator light representing the passage was lit, and Gao Kai opened the outer gate and stepped on the lunar surface.

The airlock leading to the outside world of the living module is only allowed to pass through one person at a time, and the whole group must be divided into a dozen times before they can all leave the living module.

It's not impossible to leave all at once, and the premise is that everyone wears spacesuits and directly evacuates all the air in the locker room.

In this case, the control system of the living compartment allows the gates of both tiers to be opened at the same time, so that one in the locker room counts as one and can leave all at once.

Speaking of this, I have to talk about the structure of the living cabin, the living cabin is not the kind of cabin with a simple structure, its internal design is very complex, the internal space is cut into fragments by large and small rooms, and all the doors have an airtight structure, which can be regarded as a single-layer airtight door.

This design can maximize the air pressure in each small space in the event of a loss of pressure.

Moreover, the designers even took into account the direction of opening the airtight door, and wherever the astronauts are likely to stay for a long time, the door must be opened inward.

In this way, once the indoor and outdoor pressure is lost, the indoor air pressure will tightly press the door on the door frame to avoid indoor air loss; On the contrary, if the indoor pressure loss forms a negative pressure environment, the airtight door will be opened by the relatively high outdoor air pressure, which can also play a role in reminding the pressure at the same time.

Of course, under normal circumstances, most of the environmental monitoring devices can detect pressure fluctuations in advance and alert astronauts to pressure failures in time. However, if you are not afraid of 10,000, you are afraid of what if, such a design can prevent the adverse consequences caused by equipment failure to the greatest extent, and it can be said to be the last line of safety defense for the living cabin.

There are many similar designs, such as everyone living in two living cabins, also for safety reasons; The locker room between the two living pods can be used as a refuge in the event of a rupture of the living pods, etc.

Everyone left the living module one by one, and Gao Kai and another astronaut had already driven two lunar rovers from a nearby garage.

Gao Kai beckoned and said, "Get on the bus, go to see the construction site first, and then act in groups!" ”

Everyone is carrying a load on their bodies, and instead of jumping around like the United States did when they landed on the moon, they climbed onto the lunar rover as they did when they were on Earth.

The structure of the lunar rover is very simple, just an alloy chassis, a few wheels and a simple control system.

This thing is directly driven by electricity, and I dare not say it from a distance, and there is no problem at all when it runs for tens of kilometers, and it is the main vehicle of astronauts on the lunar surface.

Ye Han noticed that the wheels of the lunar rover were all hollow in the center, similar to the hydrangea used in the lion dance, and immediately realized that this was the legendary carbon fiber wheel.

There is no sunlight in the polar crater all year round, and the surface temperature is much lower than that of a moonlit night, and the lowest can even reach more than minus 200 degrees.

Although the surface of the moon lacks a thermal convection medium, the temperature of the object does not lose for no reason, but the wheels must be in contact with the ground, so the materials used must be resistant to low temperatures.

The environment in space is harsh, aerospace materials must not only withstand low temperatures, but also high temperatures, there are not many materials that meet the requirements, and the rubber family really can't find a member suitable for use on the lunar surface.

Many people think that one of the evidences that the American moon landing is a hoax is that the Yankees' lunar rover actually uses pneumatic rubber tires, and the company that produces this kind of wheel has never launched this kind of super wheel to the market, and even the Yankees have only used this kind of wheel when they land on the moon.

If the rumors are true, anyone will doubt whether the Yankees' moon landing is true, after all, they have fooled Mao Zi with the Star Wars program, and they are habitual offenders with criminal records.

The two lunar rovers left the makeshift camp one after the other, drove more than 300 meters to the west, and stopped at the bottom of a continuous cliff.

That's right, it's a cliff.

The high craters are almost perpendicular to the ground, the cliffs are uneven, and large chunks of broken rock can be seen everywhere.

Gao Kai pointed to the cliff not far away and drew an arch in the air: "The gate of the base is open here." ”

Ye Han walked to the bottom of the cliff, his headlamp illuminated the black rock, and he couldn't help but say, "It would be fun if we found fossils here." ”

"Then you're awesome." Gao Kai said.

The origin of the moon is still a mystery, and if fossils can be found on the moon, it is equivalent to proving the blood of the moon.

"Sensei kidding, everyone remembers this place." Gao Kai said.

After a while, Gao Kai called everyone to the lunar rover and ran to the ice lake in the south, so that everyone remembered the two most important positions, and then the groups officially separated.

The excavation team began to lay the cable leading to the cliff wall, and when the cable was laid, the base would be officially excavated.

The logistics group returned to the temporary base and went into the biological experiment module to wait for the vegetable seedlings cultivated without soil -- the biological experiment module had two functions, one was to observe the growth of plants on the earth on the moon, and the other was to provide fresh vegetables for the astronauts.

According to the plan on the ground, when the base is expanded in the future, there will be enough space, and a batch of laying hens and other poultry will be sent over to enrich the astronauts' diets.

There is no shortage of eggs in the aerospace recipes, but they are all finished products such as boiled eggs, and fresh eggs cannot withstand the huge pressure of the rocket when it lifts off anyway.

Not only poultry, but also the long-term plan on the ground to send all kinds of domestic animals to the moon, after all, the earth is now infested with giant insects, and wild animals are on the verge of extinction even if they are not extinct.

Even if humans completely eradicate giant insects in the future, it is unlikely that the Earth's biosphere will return to its pre-insect state. It is said that one of the most important tasks of biological experiments in various countries is to collect and preserve the embryos and DNA of wild animals for future restoration of wild animal populations.