So far, human civilization has not mastered anti gravity technology, so spaceships can''t be built on the ground and then take off.


    Of course, in the future, they have mastered the ability of using heavy rockets to send hundreds of tons of things into space. At that time, it will be made on the ground, and then the spacecraft will be sent into space using medium rockets.


    However, in doing so, it is very uneconomical in terms of cost, and compared with heavy rockets, medium and large Rockets have a greater success rate, higher recovery success rate and lower cost.


    The most important thing is that with the development of Tiangong technology, success has also been issued. It must not be long before the Phoenix 2 series aircraft can be successfully developed. At that time, the cost of transporting all kinds of materials to the space station will become very low, which is far from comparable to launching rockets.


    Of course, for the design of spacecraft, their Aerospace Department of Tiangong science and technology has started at this time. However, compared with other spacecraft, the real spacecraft design is undoubtedly much more difficult. After all, according to Wang Bing''s plan, the spacecraft must at least be able to fly freely in the inner circle of the solar system.


    That is to say, the spacecraft is a new system, which must provide survivability for internal personnel for at least 1 ~ 2 years. Moreover, the spacecraft must also have strong armor and certain force to make it have certain survivability in the universe.


    Of course, because this plan will not be implemented until at least a year or two later, so. At this time, they are not in a hurry. For their Tiangong technology, the most important thing now is to speed up the research and development of the second generation aerospace aircraft, that is, Phoenix 2 series aerospace aircraft, and the orbital space station they are building.


    At the same time, since Tiangong technology moved to the great desert Aerospace Center, their Tiangong technology has also launched the research and development of military small combat aerospace aircraft. However, different from the previous Phoenix series aerospace aircraft, the combat aerospace aircraft they want to develop this time is not a manned aircraft, but an unmanned Aerospace aircraft, In terms of volume and weight, it is far from being compared with Phoenix series aerospace aircraft.


    According to the plan, they just want to design a combat unmanned aerial vehicle. The maximum weight will not exceed 30 tons, the maximum length will not exceed 30 meters, and the maximum wingspan will not exceed 25 meters.


    Although the weight and size of this air force aircraft are far less than those of Phoenix series and aerospace aircraft, which are only equivalent to the size of heavy fighters in the atmosphere, they are still very powerful in terms of combat effectiveness.


    According to the design data, although the space plane is very small in size, it can carry about a ton of ammunition from the ground to low earth orbit, and there is no need to worry about the internal personnel status. After all, as an unmanned combat, there are no astronauts in the space plane, so it is not necessary to consider the status of the astronauts in the plane.


    Similarly, as an unmanned space plane, all kinds of biological only life and internal circulation systems are naturally cancelled in the aircraft.


    In addition, since there are no astronauts in the territory, the aircraft can naturally walk in space for a long time without a period of time, and must return to the ground for maintenance.


    Most importantly, if the aircraft is refuelled in low earth orbit, there is absolutely no pressure to fight even in medium and high orbit.


    It''s just good in low and medium orbit. We can rely on the ground network to command these UAVs to fight.


    However, if fighting in deep space above medium and high orbit, it is very unrealistic to rely on ground command. Only data delay is enough for the enemy to destroy all these UAVs.


    Therefore, when fighting above medium and high orbits, these space shuttles must be equipped with a command hub.


    According to Wang Bin''s assumption of their R & D personnel of Tiangong science and technology, each formation of combat unmanned aerial vehicles takes a phoenix series of aerial vehicles as the master aircraft to command these unmanned combat aerial vehicles to fight.


    As time went by, Wang Bin kept running around in various workshops and laboratories in Tiangong technology desert Industrial Zone every day.


    Especially for the high-energy physics laboratory, the construction of controllable nuclear fusion test reactor under development is of great concern.


    Nevertheless, they have encountered great difficulties in the construction of controllable nuclear fusion reactors.


    After all, it is not simple to realize controllable nuclear fusion. Even if magnetic confinement technology is used, it is not simple to firmly restrict the core temperature of controllable nuclear fusion reactor to hundreds of millions of degrees in the reactor so that it will not damage the reactor shell.


    In addition, if we want the nuclear fusion reactor to work, we must reach the temperature of hundreds of millions of degrees in an instant in order to make the nuclear fusion reactor carry out nuclear fusion reaction.


    Of course, if it was half a century ago, there was really no way to achieve a temperature of hundreds of millions of degrees in an instant, except for the atomic bomb. But now, due to the development of science and technology, human civilization has found a way to reach hundreds of millions of degrees quickly, that is, using multiple lasers.


    Moreover, now human civilization has also carried out the research and development of controllable nuclear fusion to a certain extent, and has achieved the degree that the reactor can operate continuously for more than 100 seconds at most.


    Of course, even so, there is still a long way to go before a real wave of controllable nuclear fusion technology serves human civilization. If you want to make controllable nuclear fusion technology truly realize commercial application, according to the inference of scientists from various countries, it will take at least more than 50 years.


    Of course, this is normal, but now the situation is different. Because Tiantong technology or Wang Bin has the existence of the technology mall, he can obtain the controllable nuclear fusion technology of other worlds in the technology mall, so he is confident that he can realize the controllable nuclear fusion technology in a short time.


    At the same time, the controllable nuclear fusion technology of Tiangong technology is similar to that used by other countries in the world. It uses laser to ignite and magnetic restraint technology to restrict the operation of reactors. After all, it is the easiest to realize for today''s human civilization.


    Now, after all, too high-end controllable nuclear fusion technology, let alone whether it is sold in the mall. Even if it is, it is very difficult for the current human civilization and Tiangong technology to realize its technology.


    Of course, with the technological development of human civilization, in the future, when the materials developed by human civilization can withstand hundreds of millions of degrees of high temperature or even higher, magnetic confinement technology is not necessary to realize controllable nuclear fusion, but for today''s human civilization and Tiangong technology, the use of magnetic confinement technology is the best way.