Chapter 408 Derivatives (3)

And the Dandelion Project derivatives are not just that.

As the general person in charge of this project and also the chief engineer, Su Changli is responsible for the guide rail and electromagnetic acceleration system.

This system is not simple.

Otherwise, the USS Ford of the US military would not have been in a state of non-service, because their electromagnetic ejection technology was not up to standard.

Su Changli didn't have any moral obsession. He directly "borrowed" the mature technology of a certain big country.

However, he did not follow the script, because the ejection qualities of the two sides are different. The ejection mass of the Dandelion project starts at at least 500 tons, and the speed has to reach 7.8 kilometers per second. There is definitely no way to copy it directly.

His design plan was adjusted to a nuclear fusion furnace + resonance power generation + thermoelectric power generation as the power supply system.

One characteristic of resonance power generation is that the instantaneous power generation can surge through nuclear explosions, which reduces the pressure on the supercapacitor.

But in the process, Su Changli discovered a problem that had been ignored before, that is, instantaneous high voltage and large current can easily cause the transmission system to be overloaded and even paralyzed.

This problem is very serious. If the spacecraft happens to be accelerating and one of the power supply links suddenly fails, it may cause the spacecraft to be unable to increase its speed and then be unable to fly out of the atmosphere.

To this end, he contacted major power companies and electric power research institutes.

Finally, after several months of hard work, they worked together to develop a superconducting material, an alloy material using a combination of copper, barium, lanthanum and silver, which can maintain superconducting properties at temperatures below minus 24 degrees Celsius.

Although it has not reached the level of room temperature superconductor, it is not unusable at minus 24 degrees Celsius.

The liquid nitrogen circulation cooling system can maintain the temperature of the transmission line at minus 30 degrees Celsius. The core of the liquid nitrogen circulation cooling system is equipped with an inverse temperature difference system to efficiently extract the heat of liquid nitrogen to achieve low cost and high efficiency. of refrigeration.

The properties of superconductors need no explanation.

There is almost no loss of electric current in a superconductor.

You must know that in conventional wires or plateau cables, the current has 10 to 20% ineffective loss, and this part of the energy is wasted.

Although Homo sapiens has been promoting a power supply balancing strategy, striving to supply power to various cities and bases nearby, rather than engaging in long-distance power transmission across regions.

But even so, the loss of current during transmission is still considerable.

Therefore, this alloy material has considerable potential.

It's just that the cost of this material is relatively high, which makes power companies feel a little bit pained.

Copper and barium are okay. Homo sapiens have discovered several very large deep-seated copper mines in the Luzon Islands and Sumatra, and the total copper reserves have increased to 1.28 billion tons; barium can be refined from seawater, which is also not a problem.

But lanthanum and silver are different.

Lanthanum is a rare metal and silver is a precious metal.

According to the optimal ratio, it is 41.3% copper, 31.2% silver, 15.8% barium, and 11.7% lanthanum.

The use of these two metals, silver and lanthanum, is so large that even if all the underground veins discovered by Homo sapiens are taken into account, the silver reserves are only 8.37 million tons, and the lanthanum reserves are only about 72,000 tons.

Among them, lanthanum has other uses, and the current annual output is only 600 to 700 tons, which determines that this type of superconductor cable is difficult to apply on a large scale.

However, some scientific research laboratories, such as the Stellar Simulator Laboratory and the Tokamak Laboratory under nuclear fusion research, need this kind of superconductor.

In addition, this material can also be used for the transmission main lines of some first-class cities.

After all, silver's monetary attributes are not high, and expanding its industrial attributes is the way to go.

Anyway, the silver and lanthanum used to make superconductor cables do not disappear after use. At worst, when technology improves in the future, the silver and lanthanum can be recycled and reused.

Through the research and development of lead-tungsten-gold thermoelectric materials and copper-barium-lanthanum-silver superconducting materials, Homo sapiens has also discovered various rare metals and precious metals, and their industrial importance is increasingly increasing.

The acquisition of precious metals and rare metals that has been promoted before, and the regulations on bundling gold coins, have effectively increased the resource reserves of Homo sapiens.

But this is not enough.

Now, in addition to continuing to deeply explore the local resource potential, Homo sapiens company is also looking at the vast Pacific Ocean, Ceylon Ocean and Southern Ocean, as well as South America, Africa and Antarctica.

The degree of resource development in these areas is not high, and some are even inaccessible. The resources contained in them are tempting the Homo sapiens company to speed up their pace.

In the development of a power, the endowment of natural resources plays a very critical role.

Just like America, relying on the vast North American Great Plains, its agricultural production potential is very strong. Even if it is now forced to continuously shrink its sphere of influence, it can still maintain its internal stability.

If it were the Europa Consortium, if they were suppressed like this by the Homo sapiens company, they would definitely not be able to sustain it for a few more years.

The Europa Commonwealth's agricultural, energy, and mineral endowments are average. If it loses the resource supply of those economic colonies and Lucia, it will be difficult to be internally stable.

Even if the Europa Consortium has not been the first opponent of Homo Sapiens Company in recent years, various problems have arisen just because it was affected by the conflict between Homo Sapiens Company and America.

Homo sapiens companies are frantically opening full-fledged branches all over the world in order to weaken the resource potential of their opponents and compress their living space.

If we want to step into the stars in the future, we will definitely need a huge amount of resources.

Without enough resources, it is impossible to expand the universe.

…

Su Changli's cooperation with power companies has brought about the application of low-temperature superconductors.

In addition, the Metro Group has also contacted Su Changli and wants to introduce electromagnetic acceleration technology and cooperate with sub-vacuum pipelines to greatly increase the speed of freight trains in the subway.

According to calculations, if new electromagnetic acceleration technology is used and sub-vacuum pipelines are used, the maximum speed of freight trains can be increased to 720 kilometers per hour.

This not only improves transportation efficiency, but also further expands the radiation range of the metropolitan area.

However, there are still some problems that need to be solved in the ultra-high-speed subway, such as station-stop problems, deceleration problems, coordination problems, etc.

Electromagnetic acceleration combined with sub-vacuum can indeed run very fast, but slowing down is a problem.

If reverse thrust braking is used, the braking energy consumption will be considerable; while friction mechanical braking will cause certain damage to both the track and the wheels;

There is also the circular track air pressure braking method, which is to build a special circular track as a parking station. When the high-speed train enters the circular track, the train stops accelerating, and then air is gradually injected into the track to use air resistance to slow down the train.

This solution does not consume much energy, but it will increase the amount of work, and the braking time will take more than ten minutes.

In addition, there is also a reverse electromagnetic acceleration solution, which means that when the train needs to slow down, the acceleration direction of a part of the electromagnetic track is reversed to achieve the deceleration effect.

It is precisely because of these troubles that the current Homo sapiens subway has not further improved the train speed.

After all, the consumption caused by these transformations will reduce the cost-effectiveness of ultra-high-speed trains.

Unless it is a train with a journey of more than a thousand kilometers and almost no stops in the middle, ultra-high-speed trains are of use.

Otherwise, given the situation in Southeast Asia where one station is more than ten kilometers away, ultra-high-speed trains have to slow down before they accelerate to the limit. There is no need to use ultra-high-speed trains.

This is also the reason why the current passenger train speed of Homo Sapien Company is only 150 to 250 kilometers. It is not that the speed cannot be increased, but that there is no distance to increase the speed.

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