Tower Defense Strategy - Chapter 294

The test of the new conventional orbital engine is also the work of adjusting the orbital speed and angle for the future space station.

When the future space station captured the ice asteroid earlier, the orbit was changed, and the angle with the equator was 7 degrees, and the orbit was automatically lowered in the middle, and some adjustments were made. Now the angle is still 6 degrees.

The main reason is that there are too many equipment, materials, and parts to be assembled, and the total mass is really a bit large. Specializing in the transformation consumes too many resources at one time, which affects the progress of all aspects.

Now that the supply of materials from the Moon Palace has come down, the ground can already provide enough fuel for multiple fine-tuning.

Regarding the fuel issue, there is also some controversy on the ground.

Some functions of the factory area of ​​the Moon Palace have been activated. You can make your own hydrogen-oxygen fuel. In addition to receiving cargo from the freight group from the track, there is an additional amount.

However, there is a problem with time. Starting from the end of August, the location of the Moon Palace will experience a night of forty-four days.

The importance of hydrogen and oxygen reserves is higher at night. In the absence of large-area photovoltaic power supply, any power situation in the Dragon Ball nuclear power or the grid at any time may require a large amount of hydrogen and oxygen, and the hydrogen fuel cell is activated to maintain the cleanliness of the gas in the base. , Ensure that the water circulation system does not freeze.

In the tens of hours when the moon table dawns, it is the most frequent time for equipment failures.

All in all, the Moon Palace cannot be used as a stable fuel provider for the time being, and the two space stations still need fuel from the surface at this stage.

As before, these fuels are sent to the sky in the form of solid ice, and the space station itself generates electricity for electrolysis, or reserves it for water resources.

Back to the engine.

After each new engine goes into the sky, it needs to go through six ignition tests for a total of 900 seconds. Each set of four engines is expected to undergo 22 sets of tests before adjusting the future space station back to the equatorial orbit.

After returning to the equatorial orbit, transporting supplies to the Kunpeng Space Station above the ancient capital of Country C requires more fuel, but now most of the work is undertaken by the Yinglong-3, which uses the electric propulsion system, and the additional consumption is relatively small.

The advantage is that the equatorial orbit consumes more balanced projections for each orbit, including the earth-moon transfer orbit, and can save a little resource in the long run.

In mid-September, the ground made a decision to send the laser energy platform verification machine to the lunar orbit to provide emergency power supply for the moon palace.

Satellite power grids are not new, and the concept of science fiction has been around for a long time.

It is a pity that there are several major problems that cannot be solved when it is placed on the home planet.

In the outer space, the laser transmits the laser to electricity, and then launches a new laser to the next laser energy satellite, and the laser reflects in two directions.

Regardless of whether photovoltaic or boiling water is used for laser conversion, almost 60% of the waste will be caused. The closed boiling water in a vacuum environment is not higher than a few percentage points, which obviously cannot be applied on a large scale.

Laser reflection is actually more difficult.

As a planetary-star space power grid, one gigawatt for a single laser is already the lower limit. If a synchronous orbit 3 machine is made to cover the world, it will be 100 to 150G watts less.

At this energy level, even if only one-hundred-thousandth of the energy is converted into heat, there is no cooling scheme that can guarantee the safety of the long-term operation of the reflector. There is no possibility of realization until mankind finds the “absolute reflection” scheme.

The only alternative is to increase the number of satellites, reduce the power of a single laser, and use existing human technology to ensure the long-term uninterrupted transmission of the satellite power grid. In short, there are 300 satellites up.

But the grid satellite is still a trivial matter. The real problem is the atmosphere itself.

The atmosphere not only resists ultraviolet rays, it actually resists all energy from outer space. When a 1G watt laser hits the ground, it will become a spot of several hundred square meters, and the remaining power will not exceed 1% at most.

There is another problem with the laser penetrating the atmosphere. It will cause the gas molecules along the path to become particles. After particles, they are more likely to be taken away by the solar wind.

In short, as long as there is an atmosphere, the satellite grid must be a false proposition.

The moon is different. There is no need to form a power grid. Several satellites are used to slowly collect energy, and one-to-one transmission is carried out to the ground in sequence. There is no atmospheric loss. Only a wave will be wasted during transformation, which is barely acceptable.

The laser energy platform verification machine was sent to the lunar orbit. The opportunity did not lie in the needs of the moon palace, but after space experiments in early September and ground demonstrations, the one-megawatt transmission plan was abandoned and replaced with a 10-kilowatt transmission.

The megawatt has become ten kilowatts, which has shrunk a hundred times, which also proves that there are still too many things that materials science cannot cope with.

Laser power transmission almost ended without a problem. During the demonstration, some people said that 10 kilowatts is not as good as microwave power transmission, and the conversion rate is still higher.

But microwaves also have flaws that are difficult to overcome.

The signal energy saving scheme adopted by modern satellites is based on the interference phenomenon of waves. The principle will not be repeated. Anyway, the result is that this phenomenon can be used to achieve directional output of electrical signals (electromagnetic waves). In a synchronous orbit, as long as the interference is 3% of the spherical surface, Can cover almost half of the planet.

But to achieve point-to-point transmission, 3% is not enough. Even if the enhancement range is concentrated on one hundred thousandths of a sphere, as long as there is a distance of hundreds of kilometers, the degree of scattering is much larger than the area of ​​the solar panel of the satellite… What’s more, solar panels can’t absorb microwaves, and a new receiving system must be set up. It is better to boil water.

Therefore, at the technical level, there is no practical possibility for the transmission of microwave energy between satellites.

Returning to the scene, the laser energy platform was sent to the orbit around the moon by the dry-air cargo team in late September, and then picked up by the Yinglong-2 spacecraft driven by the astronauts, and projected to an altitude of 2,000 kilometers, flying over the Moon Palace and The sky above the scheduled location of Lunar No. 2 base.

The scheduled location of the No. 2 base is just a conceptual thing. Whether it will be specific or not depends on the situation of the monsters on the ground and the results of on-site surveys by the Moon Palace personnel and robots.

Send the energy platform verification machine to the orbit, and the astronauts, according to the instructions on the ground, exit the cabin to adjust the laser.

After the adjustment, the laser hit the moon surface with a spot of about five square meters.

Experts can tell by looking at the size of the light spot that it is used to boil water.

However, there is no concentrating power station on the moon watch, and the energy platform can only be idle.

Moon Palace, after several months of construction, has built two alumina glass greenhouses with a single greenhouse area of ​​0.3 hectares and a minimum height of 7 meters. The two greenhouses share a five-stage air pressure access system.

It is very different from the situation of the surface greenhouse. Outside the moon surface greenhouse, there is an electric folding shell composed of “brick wall” and “bullet-proof cloth”. The inner layer of the shell is also plated with a layer of high heat reflectivity material. Reduce indoor heat loss.

In space, heat and electricity are the basis for the operation of all equipment, and it is necessary to constantly switch between heat dissipation and heat preservation, and the same is true for greenhouses.

In order to make effective use of natural light without burning the internal crops, surface researchers have made a lot of effort, many of which are accumulated before the monster crisis… After all, the tradition of country C is that people must grow vegetables wherever they go. Where, the moon table, they came here a few years ago, and they received a gram of moon soil from Country A decades ago.

In addition to the alumina glass layer and the folding shell, the Moon Palace greenhouse has many famous halls.

On the spire of each greenhouse, there are four pieces of special alumina glass. They are not flat. When the sunlight is strongest, all other shells are closed. Only these four pieces provide light for the whole greenhouse.

In addition, there is a relatively thin layer of lead-containing glass and glass coating in the entire alumina glass layer, which is mainly used for anti-radiation and controlling part of the ultraviolet flux.

Then, on the side of the greenhouse, every 1.5 meters in height, there is a horizontal strip of artificial crystal with a special geometric structure. When the side shell is opened, it can provide side lighting for the plants grown in layers without electricity.

But now there is no layered planting at all. Botanists are still transforming the lunar soil and carrying out small-scale planting and recording. The structure of the greenhouse may need to be fine-tuned later.

The lunar soil transformation project is relatively smooth. The two greenhouses have accumulated over 1,000 tons of primary soil, which can meet the basic planting needs.

Including the gold juice sent from the future space station, the number of pooping organisms is still far from enough for large-scale cultivation, and there is a lot of extra work for hoarding fertility.

At this stage, the accumulation of fertility mainly depends on the inedible parts of the crops accumulated before the decomposition of microorganisms. Human **** is still combined with chemical fertilizers and other materials to transform more lunar soil into primary soil.

By the way, there is a “brick wall” and a floor made of “bullet-proof cloth” on the ground floor of the Moon Palace Greenhouse, which separates the internal artificial atmosphere from the natural lunar soil ~www.mtlnovel.com~there is about one meter deep inside waiting to be transformed Lunar soil, they and the floor together form the foundation of the Moon Palace greenhouse.

It is expected that after the indoor lunar soil is completely transformed, a total of 15,000 tons of primary soil will be obtained. At that time, without the parent star supplementing chemical fertilizers, it can also be maintained in a relatively stable long-term through rotation and the biological and chemical methods of the moon. Planting yield.

In fact, according to the early technology accumulation and direction, hydroponics technology is easier to realize and manage in space. But when it comes to sustainability, hydroponics is not a good idea.

It is true that lunar soil cannot be planted directly, but once the mineral components in lunar soil are decomposed, it can also provide support for plant growth. These materials must be transported from the surface if they are not obtained from the lunar surface. Hydroponics will not reduce the total material consumption. . Microbial transformation is always more reliable than setting up another set of lunar soil decomposition device. With the microbial transformation scheme, it is determined that only soil can be used for cultivation, and hydroponics can only be used in the laboratory for the time being.

It can be seen that the Moon Palace is making good progress in terms of “sustainability”.

The performance is that people are already being selected, and when the first crop of the greenhouse comes out, a list of people who will enter the Moon Palace in the next few months of this year and early next year will be drawn up.

Before the personnel, the first thing to send to the Moon Palace is “civilization.”