After listening to what Wang Bin said, old Qin frowned. Although he had a hunch in his heart before, Tiangong technology probably did not have artificial gravity technology. After all, if Tiangong technology had artificial gravity technology, Tiangong technology would definitely have anti gravity technology, so the aerospace aircraft and space warplanes designed by Tiangong technology would not be the same as now, We have to use pulse detonation rocket engine to send into space. Compared with anti gravity technology, these pulse detonation technologies currently used are too backward


    However, when old Qin was full of disappointment, Wang Bin thought and said, "old Qin! Although Tiangong technology has no artificial gravity technology, it is not absolutely impossible. You said that sky city has a certain gravity. I think old Qin, as the head of the official Aerospace Department, must be familiar with choosing gravity technology!


    So if we can, we can use rotating gravity instead of artificial gravity. Moreover, with our human civilization, the current energy, rotating gravity, is also the best choice at present. "


    Old Qin thought about it. Indeed, as Wang Bin said, the rotating gravity system is indeed the best choice for human civilization. After all, other forms of artificial gravity, with the current capacity of human civilization, can not be realized at all.


    Therefore, Qin Lao said, "Mr. Wang, I naturally know about rotating gravity. After all, this technology appears in many science fiction works of human civilization, such as the previous wandering planet, but it is not easy to realize this technology.


    After all, what we want to build is a space city of more than 100000 tons, not those space stations with limited volume. Therefore, if such a space city wants to use rotating gravity, the material requirements for the space station are high. At least as far as I know, we don''t seem to have such material technology! "


    "No, Mr. Qin, if it were a few months ago, we really didn''t have such technology, but now it''s different. Not long ago, Tiangong technology really made a breakthrough in material technology. This alloy material not only far exceeds the materials we have mastered in many basic properties, but also far lower than the same type of materials in terms of cost What is important is that many of the most basic materials of this material are the most basic materials in the universe, such as iron, copper, aluminum, magnesium, etc. of course, there are some rare metals, but the amount required is not much, so the cost of this material is a little more expensive than ordinary iron.


    Therefore, this material is very suitable for large-scale smelting. It is precisely because of this that building a megaton space city with rotating gravity system is no longer a problem in terms of materials.


    Even for the shell of the 5000 ton space warship being built by Tiangong technology, we are ready to use this special alloy. It can be said that with the existence of this special alloy, we have the real capital to enter the universe. "Wang Bin said.


    "Really, that''s great." Qin said happily. After all, with this material technology, the cost of aerospace aircraft, space warships and warships manufactured by human civilization will drop sharply. At the same time, he also has a deeper understanding of the scientific research ability of Tiangong technology. After all, this is a million ton space city! The most important thing is that such a huge space city also needs to rotate at a certain speed. In this way, the centrifugal force generated by rotation is unbearable for ordinary metals, etc., while the material of Tiangong technology can withstand the centrifugal force generated by such heavy objects.


    Of course, Mr. Qin didn''t know that their Tiangong technology was able to develop this technology, which was entirely due to the material model provided by super God plane and Lao Huang.


    You know, according to Lao Huang, the material samples he provided are the materials used for the skeleton and body of the main warship of Taoxi civilization, while the main warship of Taoxi civilization is a giant with a length of several kilometers and a weight of millions of tons. Naturally, it is far ahead of human civilization in material science and technology.


    For such advanced materials as like as two peas, we can not reproduce the same materials just by virtue of Tiangong technology. However, these materials provided by Lao Huang are also of great help to science and technology in the field of technology.


    Although the material developed by Tiangong technology can not reach the level of Taotie civilized space warship material provided by Lao Huang, its performance has reached about 50% of Taotie civilized space warship skeleton material. However, even so, it has absolutely met the requirements of human civilization for materials.


    In addition, in fact, the materials provided by Lao Huang to Wang Bing are not only the materials used in the skeleton of the space warship, but also a large number of other materials.


    However, because these materials are too advanced, such as the materials for Taotie civilization elite soldiers, that is, the armor worn by super soldiers, and the materials used by male super soldiers, these materials have involved the dark matter level. With Tiangong technology and the current scientific and technological level of global civilization, it is simply impossible to understand and naturally can not reverse the same materials.


    For these technologies, Wang Bing consciously did not develop them, because he knew that it was impossible to succeed. Even if Lao Huang and Du obtained the formula and manufacturing process of these materials from Lao Du, it was impossible to manufacture them with the ability of earth civilization, because many of these raw materials did not exist on the earth, Or it is impossible to produce without knowing it at all.


    When Qin Lao knew that Wang Bin''s Tiangong technology had corresponding materials, he was naturally very happy and immediately said, "President Wang, since you Tiangong technology have corresponding materials and technology, I think there should be no other problems in the construction of space city?"


    After all, in the previous meeting, the superiors had expected that the construction of the space city would be dominated by Tiangong technology. At the same time, they had also expected that the courage and strength of Tiangong technology would never disappoint them. The space city built was at least tens of thousands of tons or even 100000 tons.


    However, they did not expect that Tiangong technology would have such a big heart that it wanted to build a million ton space city. Of course, they loved it. As for the cost of the space layer, the superior did not care too much, because since it had decided to build a space city, the required funds and other issues, The superior has made all psychological preparations.


    Now that all the problems have been solved, it is natural to implement them without hesitation, even if it needs to use the national strength of the whole country.