The rise of nanometers

The expert symposium held by the Venus Exploration Bureau lasted for more than a week. During this period, Huang Xiuyuan and others also conducted a series of simulation calculations with the help of satellites in the orbit of Venus.

In the atmosphere of Venus, the atmosphere approximately 40 to 70 kilometers away from the surface of Venus is a relatively adaptable area.

The altitude Huang Xiuyuan is more optimistic about is the atmosphere of Venus at an altitude of 60 to 65 kilometers. The atmospheric pressure here is about 50% equivalent to the atmospheric pressure at sea level on Blue Star.

And because the gas concentration in the atmosphere of Venus is higher than that of Blue Star, its troposphere height is around 50 to 62 kilometers above sea level; its middle atmosphere is between 62 and 120 kilometers; and its thermosphere is between 120 and 300 kilometers. This is also the Venus ionosphere.

In addition, there is a thin ozone layer in the altitude zone above 100 kilometers of the Venus atmosphere.

This is why Huang Xiuyuan focuses on the 60-65 km altitude zone of Venus' atmosphere, where the air pressure is relatively suitable and is at the junction of the troposphere and the middle layer.

The dense atmosphere of Venus raises the ozone layer, thermosphere, and ionosphere. The existence of these gas layers can effectively block solar storms and cosmic rays.

Of course, with the Federation's current technology, unless it is a terrifying and dense gamma ray flow or neutron flow, it will be difficult to directly destroy the Federation's spacecraft.

Using the technology of an internal vacuum airship to build a floating city in an area of ​​60 to 65 kilometers in the atmosphere of Venus is not a fantasy, but the human scientific community has conducted relevant research a long time ago.

In fact, in Huang Xiuyuan's opinion, if it were not for the unique ecosystem, the value of Mars would not necessarily be comparable to that of Venus.

After all, Venus has obvious advantages in distance, mass, gravity, light and heat.

Had it not been for a special event that erupted on Venus billions of years ago, which caused the rotation to slow down and the core to stagnate, the magnetic field would rapidly deplete and a "runaway greenhouse event" would occur, resulting in the hell scene on Venus today.

If the rotation speed of Venus is similar to that of Blue Star, then the ambient temperature of Venus is most likely 30 to 50 degrees Celsius, which is a global tropical climate.

Although according to current technology, it is basically impossible for the Federation to restore Venus to a relatively high rotation speed.

The only way is to push an asteroid (probably no smaller than one-tenth the size of the moon), let the asteroid hit Venus at a specific angle, increase the rotation speed of Venus, and reactivate the earth's core.

It is a pity that this plan, let alone whether it can push such a huge asteroid, the disturbance to the entire solar system after the asteroid hits Venus is enough to make the Federation think twice.

If Venus doesn't collide properly and affects Blue Star, it will be a waste of time.

Therefore, the current plans are relatively conservative.

Huang Xiuyuan plans to build a floating city and then absorb the atmosphere of Venus bit by bit. On the one hand, he can gradually adjust the composition of Venus' atmosphere and reduce the pressure of the atmosphere; on the other hand, he can use the gases in Venus' atmosphere as raw materials.

The atmosphere of Venus contains huge amounts of carbon dioxide, sulfur dioxide, sulfuric acid, hydrogen sulfide and the like.

Carbon dioxide accounts for about 96% of it. Such a huge carbon source, coupled with the nanotechnology mastered by the Federation, can completely apply carbon fibers, carbon nanotubes, composite carbon nanotubes and the like on a large scale.

Once self-sufficiency in some raw materials is achieved, it will be a huge acceleration for the Federation to develop Venus.

Just like the current Moon Zone, the industrial zone in Guanghan Palace City can produce a large amount of raw materials, which makes the expansion of the Moon Zone seem to be even more powerful.

After all, if a base relies on Blue Star transportation from head to toe, and considering the distance from Venus, it probably won't take more than ten years to build a space base of more than 100,000 tons.

But with the support of Venus' local materials, it's different. Blue Star only needs to transport some precision parts and can quickly build a large base.

Halfway through the discussion, everyone brought in the Modu Feike Company and several companies and research institutes engaged in airship research and development.

The technology of internal vacuum airships is different from that of inflatable airships. The technical principles of the two are different.

The technical principle of the inflatable airship is to use gas with a relatively low density and not too heavy to create a buoyancy between the airship and the atmosphere.

The technical principle of the internal vacuum airship is to use a lightweight material with very high strength to create a vacuum ball, and use negative pressure repulsion to push the airship up.

From the perspective of buoyancy, the overall buoyancy of the internal vacuum airship is higher than that of ordinary hydrogen airships and helium airships. It is not prone to the explosion of hydrogen airships and does not need to consume scarce helium resources.

The disadvantage of the internal vacuum airship is the material problem. It requires light, thin and high-strength materials to maintain its own negative pressure-resistant structure without taking too much care.

This material can be realized by combining the previous composite graphene with silicon nano-coating.

A researcher calculated some data: "Based on current materials, a 1-kilogram shell can support about 450 cubic meters of vacuum. The payload of the striker-class spacecraft to Venus is about 400 to 600 tons."

"400 tons of shell material should be able to create a vacuum volume of 1.8 billion cubic meters."

Another researcher shook his head: "It's too ideal. The airship's vacuum chamber cannot be single-piece. It must use a honeycomb-type compartment. Otherwise, if a leak occurs, the consequences will be disastrous."

"Even with a compartment design, 400 tons of shell material should be able to create a vacuum volume of 50 million cubic meters."

"No, we also need to consider balancing the engine and various supporting equipment. These things account for the bulk of the transportation capacity..."

Everyone expressed their opinions, and as the discussion progressed, the design of the floating city was gradually improved.

Considering the transportation capacity of the striker-class spacecraft, the weight of the first phase of the floating city was limited to about 400 tons.

They designed a floating module that can be continuously spliced.

The entire floating module includes 9 major systems including posture balance auxiliary engine, vacuum shell, module frame, and control system.

The vacuum volume of this floating module is about 7 million cubic meters, and it is composed of 7,000 vacuum chambers.

The total buoyancy that can be provided, considering that the atmosphere of Venus is around 60 to 65 kilometers away, the air pressure is about 40% of the sea level of Blue Star, and 1 cubic vacuum volume can provide 0.4 kilograms of buoyancy, and the total buoyancy is about 2,800 tons.

Subtracting the 400-ton weight of the floating module itself, the available weight should be about 2,400 tons.

In other words, the maximum load-bearing capacity of a floating module is 2,800 tons, and the available load-bearing capacity is 2,400 tons.

In order to ensure the stability of the floating module, a control system is necessary. The current solution of the airship design team is a controllable vacuum chamber.

It is to design a part of the vacuum chamber into a cavity that can release and evacuate the vacuum. When this part of the buoyancy is needed, the vacuum is evacuated; when it is not needed, the vacuum is released.

In this way, the buoyancy of the floating module can be stabilized, and the floating module will not float up and down due to changes in buoyancy.

Floating modules can be used individually or spliced ​​together to form a floating city.

The Venus Exploration Agency commissioned several airship companies and research institutes to design and mass-produce floating modules to prepare for the future development of Venus.

Thank you for your support (ω｀)