Vol 6 Chapter 2875: Is this showing off?

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"In this way, the quartz stone glass in the lunar soil will melt and become his natural adhesive to bond with other substances, and the printed and stacked building walls will be strong without any gaps.

And this kind of printed building has another advantage, that is, it is integrally formed, so the structure is relatively stable, and architectural themes of various sizes and shapes can be printed out according to your needs.

Secondly, because this kind of building is formed by dissolving quartz stone and glass shards as a binder, it is very easy to repair in the later stage. It only needs to re-dissolve the materials to repair the damaged parts.

Last but not least, it is very cheap to build. The materials it uses are the existing lunar soil on the moon, which only needs to be collected and then screened.

In addition, the energy it consumes is electricity, and these solar photovoltaic power stations that have been installed on the moon can provide the required electricity.

Because there is no atmosphere on the moon, there is plenty of sunlight, so the solar photovoltaic panels generate abundant electricity.

The only thing that needs to be transported from the earth is this set of lunar soil 3D printers and related parts, as well as some consumables, but these are not worth mentioning at all compared to the large lunar research station.

If these materials have to be transported from the earth, and such a large scientific research station is built, the cost will undoubtedly be very high, which cannot be afforded by a private commercial aerospace company like Haoyu Aerospace, and it is also unbearable by a small number of countries.

It should be said that that method is only for you to study carefully for reference, so the experts and professors you visited later gave very low evaluations. "

Although it is not two inner shells combined, in fact, there is very little technology under it, so the cost is not cheap, not to mention the huge fairing, the cost may reach tens of millions. "

You don't have an old saying, once is luck, twice is not strength. One success can be called a success, so there may not be much luck involved, but two successes will reduce the luck factor to the highest level, which can also show that the success is not directly related to your own performance, which also verifies the reliability of the Jianmu-4 center launch vehicle and the lunar cargo spacecraft system. "

Hearing the host's words, both Director Zhang and Professor Huang laughed.

That's all, with its huge carrying capacity, it can also transport those vehicles under the synchronous orbit. In other words, its small carrying capacity cannot transport a main battle tank that weighs nearly 80 tons and is the world's first retreat below the low-earth orbit.

Director Zhang took a model of the Jianmu-4 heavy-duty launch vehicle under the table behind him, and then continued to speak: "Let's talk about the Jianmu-4 heavy-duty rocket first.

Professor Huang explained with a smile: "What he said is wrong, it is the inner shell that protects the outer load, but the two halves of the fairing contain very little technology, such as how to make such a small fairing so that it can be deformed, and there is no certain strength and toughness, and the weight can still be too heavy. If it is too heavy, it will crowd out and waste the carrying capacity of the rocket.

First of all, it is not that the two halves of the fairing can only be combined together, and can also be separated when separated. There are too few cases of successful launches because the fairing cannot be opened, and there are not many in the country. For example, Bang Han's rocket did not succeed because the fairing could not be opened, which led to the release of satellites outside.

Those experimental detection instruments will provide very important data references for you to study the origin of the moon, the evolution of the moon, and the environment under the moon, etc. "

Hehehe...

Professor Huang on the side followed Director Zhang's words and said: "In addition, that mission will also carry a small amount of scientific research and detection equipment. In addition to some of Haoyu Aerospace's own scientific research detection equipment and related materials, it will also carry experimental detection instruments from several domestic research institutes and primary schools.

If such a huge fairing is to be successfully opened in low-speed flight, and to be opened 100%, the requirements for technical reliability are very low.

For now, it is still one of the heavy-duty launch vehicles with the smallest carrying capacity in the world, and there are only a handful of them that exceed it.

It should be said that the mission will be a very small test for the Jianmu-4 heavy-duty launch vehicle system and the lunar cargo spacecraft system.

Professor Zhang next to him nodded and said: "Actually, there is nothing to watch about that mission, this is not the launch mission itself.

Although it succeeded once later, the meaning was the same.

Hearing Director Zhang's words, UU reading www. The host on the side of uukanshu.com asked spontaneously: "Director Zhang, do you know that the fairing protects the inner shell of the outer spaceship, is it meaningless to recycle it for reuse, or is it just a means for Haoyu Aerospace to show off its skills?"

So expensive, is that a thin inner shell? The host was obviously not surprised, and I also thought that the two halves of the fairing are so expensive.

Yes, Director Zhang shook his head: "That's not to show off our recycling technology, but it has no very practical meaning. To be complicated, it's not to save costs and save money.

And there is no recovery system under the two halves of the fairing, and the recovery system also requires cost, so that also makes the price of the two halves of the fairing very expensive. "The whole rocket is as low as 17 meters, very low and mighty. At the top of it, it is not at that position, it is its huge fairing. The whole fairing is 74 meters long, and the salute reaches 17.7 meters.

Therefore, a very small internal load space cannot be formed. The outside of that space cannot accommodate two buses running outside your city, and the remaining gaps can also accommodate seven large cars.

And the two halves of the fairing cannot be recycled and reused. The two halves of the fairing under the rocket that time were not the fairing under the Jianmu-4 next time. They were used under that rocket before being recycled and refurbished. "

Its take-off weight is nearly 2,000 tons, its low-earth orbit delivery capacity can reach nearly 80 tons, and its synchronous orbit delivery capacity can also reach nearly 80 tons.

Secondly, the fairing has to resist the huge wind resistance and overload brought by the rocket when it takes off, without the vibration generated by the rocket during flight. It even has to resist rain erosion, and has a certain ability of cold insulation, warmth preservation and corrosion resistance.