Jiang Yuan looked carefully for a while and asked:

"Academician Wang, has the breakdown test been done? There is no problem with self-healing, right? What about other data?"

Although a simplified version of the space-based light shield is installed on the space photovoltaic algae power station to prevent space junk, it is still necessary to strengthen the self-healing characteristics as much as possible to prevent it.

Once the space photovoltaic algae power station is put into operation, it will provide a large amount of energy source to Huaguo, and if there is an accident that causes a power outage, it will cause great losses, and maintenance is also very troublesome.

Self-healing is a better solution.

"I did it, and it turned out very well. At this time, Zhang Jin, who was following Academician Wang, stood up, he had been in charge of the research of photoelectric algae, and the vacuum photoelectric algae research project was transferred.

Zhang Jin pulled up a form from DT3 and shared it with the three of them to watch.

Jiang Yuan looked at it, and Zhang Jin said:

"Let me tell you all about it. First of all, the growth rate meets the requirements, as long as the special nutrient solution is sufficient, it can grow to 10 square kilometers in two months, and then enter the high-speed growth period, and grow to 100-105 square kilometers in two months. Of course, in this process, we can ensure that it grows in a snowflake-like balance, ensuring that the weight balance at all angles at any time exceeds 99.5%, and then the attitude adjustment system of the power station has met the design needs. ”

Jiang Yuan nodded, weight balance is still very important.

"Secondly, there is the issue of density. Academician Jiang, the lightweight design of your stem veins and leaves is very effective, depending on the density of the stem veins, the weight per square meter ranges from about 50 grams to 75 grams, and the overall average is about 53 grams. Based on the design of 100 square kilometers, the overall weight is about 5,300 tons. This weight is far lower than your requirement of 6,500 tons, but is this weight still a little too big?" Zhang Jin said that he was a little worried, although he was not engaged in rockets, but he still understood the simple rocket theory, in his opinion, 5,300 tons of payload was too big!

Jiang Yuan explained with a smile:

"Enough. You also have enough permission to know, and you may be too busy to pay attention to the files of the brother unit. Let me tell you directly, the Huaguo Academy of Launch Vehicle Technology will provide a new 1,500-ton Yinhe-1 electric propulsion launch vehicle with an effective mass of up to 75%, which means that it can send 1,125 tons of payload at a time. The vacuum photoelectric algae nutrient solution cannot be absorbed in its entirety, it will waste 5% of the weight, plus the weight of the equipment of the power station itself, it will not exceed 6000 tons, and six launches will be enough. ”

Send 1125 tons of electric propulsion launch vehicles at once!

Zhang Jin was surprised, but thinking that Jiang Yuan was responsible for this project, and then thinking of Jiang Yuan's previous achievements in the new lithium battery, he basically guessed that Jiang Yuan had made another major breakthrough in the battery.

The energy density of a battery that can meet the requirements of a launch vehicle is simply unbelievable!

Now there is no sound outside, either for national strategic considerations, or the new battery is too expensive to be commercialized.

"Great!" Academician Wang was happy to add another sharp weapon to the country, but he would not continue to ask about such a matter that was obviously highly confidential.

Zhang Jin continued:

"Then there is the self-healing aspect, as long as the area of a single damage does not exceed 20%, the photoalgae can heal themselves at a high growth rate. If it exceeds 20%, the recovery speed is reduced by up to double. If it reaches 80%, the photoalgae may die directly. Of course, all this is when the nutrient solution is sufficient. ”

Jiang Yuan compared the technology he had strengthened with directional evolution of science and technology, and he was basically satisfied with the design value.

"Finally, there's power generation efficiency. The photoelectric conversion rate of vacuum photoelectric algae is slightly lower than that of photoelectric algae, 82%, but the solar energy in space does not pass through the atmosphere, and the density is much higher than that of the earth's surface, and the comprehensive calculation will reach more than 1K per square meter of power! Theoretically, if all the 100 square kilometers of vacuum photoelectric algae are deployed, the power is as high as 100 million kilowatts!

That's a terrifying number!

At the end of 2017, Huaguo's installed power generation capacity was 1.78 billion kilowatts, which means that Jiangyuan only needs to deploy 1,800 square kilometers of vacuum power generation algae in space to meet the needs of the whole country in 2017!

The maximum growth area of vacuum photoalgae is 500 square kilometers, which translates to 1,800 square kilometers and only four space power stations.

Space solar energy is not like the ground, it is also affected by the weather, and there is no day or night.

According to the design, the orbit of the vacuum photoelectric algae power station will be perpendicular to the ecliptic plane, which is to put it bluntly, rotating vertically, basically along the north and south poles around the earth, slightly oblique.

The leaf surface of the vacuum photoalgae is parallel to its own orbit and also perpendicular to the ecliptic plane, so that it can fully receive the sun's light at all times and will not affect the life of human beings on earth.

Of course, because it is so large and so close to the Earth, if it happens to pass over our heads at night, an extremely bright artificial star can be seen.

In addition, a group of geostationary satellites on the earth's equator will be launched to keep them in the sky over China at all times as relay satellites for wireless power transmission, receive the energy of the power station, and then transmit the energy to the receiving station on the ground.

Not to mention the high cost of the whole construction, there are many research departments involved, such as vacuum photoelectric algae research, nutrient solution research, new electric propulsion launch vehicle research, and ultra-long-distance wireless transmission research.

Coupled with manufacturing, the number of researchers and skilled workers involved is more than 200,000.

In other words, this kind of space solar technology, small countries with less than 200,000 skilled workers should not fantasize.

Even if they get the technology, they can't afford to play because there is no one.

Modern technology is such a trick, as the top technology becomes more and more complex, more and more people are involved.

Taking the example of the Chinese people's favorite aircraft carrier, Makarov, director of the Black Sea Shipyard, once clearly explained the difficulty of building an aircraft carrier.

At that time, in 1993, when the red woolly bear had just exploded into a bunch of small hairy bears, Comrade Maklov said at a working meeting that the "Varyag" aircraft carrier would never be completed.

Someone on the spot asked: What are the conditions for the completion of the factory?

Makarov replied:

"The red woolly bear, the Central Committee, the Military Commission, nine ministries of defense industry, 600 related majors, 8,000 supporting manufacturers, and a great country is needed to complete it, but this country is no longer there. ”

Well, what does that mean?

No one else counts, even the simplest skilled workers, according to 8,000 supporting manufacturers and 500 people in one factory, this requires 4 million skilled workers!

In other words, a country without 4 million skilled workers can't even think about building a modern aircraft carrier.

Is this just 4 million skilled workers?

No, you don't dare to let him actually make parts for aircraft carriers, do you?

So, that's 4 million mature skilled workers.

In addition, a country can't all skilled workers build aircraft carriers, right? What do the common people eat and use?

Therefore, if a country does not have tens of millions of skilled workers, it will not be able to squeeze out 4 million skilled workers to build aircraft carriers.

How many people are needed for tens of millions of skilled workers?

First deduct the elderly and children, and then deduct the number of people from all walks of life, and then count the fact that most of the skilled workers are men, and the population of this country is basically not less than 100 million.

In other words, students with a population of less than 100 million can go out and rest.

If it weren't for the lack of military force, the number would even be 200 million.

Looking at the global population ranking, there are only five countries that meet the requirements.

First exclude a magical football country where JC can't even beat drug dealers, and then exclude a garbage country with a unique taste that has to eat bats, only Hua, Ying and Ah San are left.

(Of course, rabbits are absolutely peace-loving!Even if they build No. 004, it's all a test ship!Everyone sit down, especially you, Eagle Sauce, sit down, it's just a test, don't worry!)

The requirements of modern top technology are so harsh, a population threshold will filter out the vast majority of countries in the world, and countries with small populations will not even think about it, no matter how advanced the technology is, it will be in vain.

Don't have a population and still make a yarn?

Therefore, Mao Xiong's technology and military industry have degenerated into what they are now, not because of a lack of money at all, but because after the self-explosion, Da Mao directly divided half of its scientific research personnel and skilled workers, and even the population was not enough (only 130 million remained).

Jiang Yuan clapped his hands and said:

"Well done everyone! This place is basically ready, I will not participate in the finishing work, Zhang Jin, you should cooperate with Academician Wang to complete the rest of the work. Now look at ultra-long-distance wireless power transmission, the progress is a little delayed, and I will immediately go there to participate in technical research. ”