Aerospace science and technology, the most cutting-edge technological system, can definitely be called a powerful weapon of the state, and it is impossible for any government to allow it to be uncontrollably in the hands of private individuals, especially in a society like China, where the government's desire for control is so strong that it even needs to register with its real name to buy a kitchen knife, will maintain 120,000 percent attention to this, and once discovered, it will immediately take measures to nationalize it openly.

Ye Qiuli didn't think that the little strength he had could fight against the entire country, so naturally he couldn't make such a big move and ask for trouble.

Therefore, the take-off and landing mode of the aerospace aircraft he envisioned would adopt the vertical take-off and landing scheme of the Harrier fighter, through the nozzles in different directions on the fuselage to spray high-temperature particle streams to propel the aircraft into the sky, and then do continuous acceleration diagonally into outer space in the atmosphere until the speed reaches the first cosmic velocity, and then break away from the earth's gravity and fly into space. In order to conceal himself, he also plans to paint the inside and outside of the airframe with stealth paint to completely eliminate the possibility of it being discovered.

Choosing an aerospace aircraft with a streamlined aircraft shape, in addition to being pleasing to the eye, is mainly for ease of use, reducing the requirements of auxiliary facilities, and avoiding some unnecessary troubles. The choice of nuclear fusion power as the driving method of the spacecraft is to maximize its speed and endurance, so that it can meet the requirements of long-distance flight across galaxies.

The reason why Ye Qiuli gave up the now very mature rocket carrier manned spacecraft and space shuttle was that in addition to the complex structure and insufficient safety of those two spacecraft, the main reason was that they were too slow and too short in range, and they could not meet his needs for ultra-long-distance space travel away from the solar system and to other star systems.

You know, the diameter of the solar system alone is 8 to 12 hours the speed of light, a little farther away, the closest to the earth, the star system where terrestrial planets are speculated to exist, Alpha Centauri is 4.4 light-years away, and the three large planets of 55 Cancri (star), which is very similar to the solar system, are about 50 light-years from Earth, and the diameter of the Milky Way is about 100,000 light-years.

For such long distances, spacecraft would be of no use if the speed of light could not be measured. After all, even if the cosmic wormhole that can travel through time and space does exist, it is not everywhere, and it needs to be carefully calculated and found in the vast space, and even if the cosmic wormhole can be found, it still needs to be able to fly to it as soon as possible, otherwise it is still a sigh of hope and helplessness.

In the vast starry sky of the universe, the long distance calculated in light years is not at all imaginable by ordinary people, the speed of the spacecraft is not fast enough, the range is not far enough, and the interstellar voyage is not even thought about, it is better to simply go home as soon as possible to wash and sleep, and avoid dying of old age on the way to the target.

The spaceship that Ye Qiuli is going to build is not an ordinary cargo designed to land on the moon or Mars, his minimum requirements are to fly out of the solar system and be able to fly to the nearest star system to the earth - Alpha Centauri. Of the few teleportation arrays that Lu Yan had found near the earth that could still be used, the nearest one was there, and if he wanted to teleport to the cultivation realm, he had to use it as a starting point.

Therefore, if Ye Qiuli wanted to successfully leave the earth and fly there before his cultivation reached the distraction stage, his spaceship must have the strong ability to fly a distance of 4 or 5 light years, and it should not take too long. Otherwise, it would be best for him to stay on Earth honestly, cultivate step by step to the distraction period, and then use the power of teleportation to slowly fly there with his own cultivation.

To achieve this level of interstellar travel, the current rocket engines that rely on burning chemical fuel to propel spacecraft are definitely not possible, and at least they need to be powered by nuclear energy. Although the nuclear fission reaction engine can push the speed of the spacecraft to 6% of the speed of light, the two-stage fission engine can push the speed of the spacecraft to 12% of the speed of light. However, nuclear fission reactions require a thick layer of radiation protection, which takes up a lot of spacecraft space and greatly reduces its payload, and fission fuel is not easy to obtain in the universe, so nuclear fission engines are obviously not a good choice.

Relatively speaking, the fusion engine is much better, and there is no need to consider the radiation problem, first of all, a large unwanted part of the engine volume is subtracted. Moreover, the raw material for nuclear fusion comes directly from hydrogen, the most common particle in the universe, and if the problem of miniaturization is solved, fusion reactors can easily be refueled.

At the very least, there are large amounts of deuterium and tritium and helium-3 in the surface soil of the Moon and in Jupiter's atmosphere, and if a spacecraft is propelled by a fusion engine, it is perfectly possible to refuel on the Moon or Jupiter in the solar system and then continue interstellar travel.

In addition, the fusion engine is also more efficient, and can fully push the speed of the spacecraft to 12% of the speed of light, and the speed can be even faster when the multiple stages are combined. Even, on its basis, a fusion ramjet engine can be developed, which uses a powerful magnetic field to form a magnetic funnel with a huge diameter, and collects the hydrogen encountered during the interstellar journey to be used as fuel for the spacecraft's nuclear fusion reactor. A spacecraft without a fuel load, propelled by a fusion ramjet engine, is fully capable of traveling freely through space at speeds close to the speed of light.

This driving method is the one that Ye Qiuli is most satisfied with, because in the information he obtained, there happened to be ready-made design drawings for controllable nuclear fusion reactors, and there was no need to study too much, just build it directly. Moreover, its construction base is also a variant of various different properties of super materials, and it is completely possible to replace them by crafting similar materials by means of refining. At that time, if he made more ruthless use of some high-grade refining materials, maybe even the miniaturization of controllable nuclear fusion reactors would be achieved by the way.

Of course, in addition to fusion engines, there are also faster drive methods, such as antimatter rocket engines, which can push the speed of a spacecraft up to 66% of the speed of light. However, this kind of technology is too far away from the stage of practical application, and I don't know which year it will be possible, and Ye Qiuli doesn't have that long to wait for scientists on the earth to research those technologies.

Similar laser sail and solar sail technology are the same, although they also have bright prospects, but they do not know what year and month they will have to be realized, which obviously seriously does not meet his current requirements and expectations. Therefore, after comparing and comparing, Ye Qiuli finally chose the nuclear fusion engine as the most powerful source of power for the spacecraft.

After all, both the tokamak device based on the principle of magnetic confinement and the fusion reactor of the laser detonation device based on the theory of inertial confinement have been successfully tested. Moreover, the design drawings he obtained before were also the result of substantial improvements to these two devices, which already had quite perfect feasibility, and there was no need for too much research and experimentation, as long as the corresponding materials were manufactured, the construction could be successfully completed.

With this kind of ready-made thing, Ye Qiuli naturally wanted to use it directly. On this basis, if we use the method of cultivation to improve, for example, we can use the refining method to refine some new materials that are resistant to high temperature, high pressure, ultra-high strength, and ultra-high hardness to make the shell of the reactor, and some rectification formations are also laid inside to build a powerful force field that restricts the progress of the reaction. By merging two very different civilizations, Xiuzhen and technology, to create a miniaturized controlled nuclear fusion reactor is obviously the most feasible way at present.

In this way, the most important power problem has been solved, the most critical material problem has also been settled, and the overall design of the spacecraft has a ready-made drawing data, and only needs to make certain modifications on that basis, and a super spaceship is basically formed. The remaining problems such as control, protection, life support, and liaison are all minor troubles, and the existing technology can completely solve them.

After recording all the technical essentials and key points needed to build a spaceship on paper, Ye Qiuli formulated a rough construction step and prepared to start implementing it after the New Year. Now, his cultivation process has basically entered the right path, and with the assistance of the spar, he only needs to continue to maintain the cultivation of the "Nine Rank Ascending Immortal Technique", and there is plenty of time to complete this plan.

......

After simply finishing these things, Ye Qiuli didn't stop staying longer, quickly packed up, and prepared to go home for the New Year. Although he has embarked on a path of cultivation and cultivation and the pursuit of eternal life, he has not yet ascended to immortality after all, and his family and family still occupy an extremely important position in his heart, and he can't let go of that deep feeling for a while.

When you go home for the New Year, of course you can't do it without money. Recalling that after winning 24 million in the casino for the first time, he was robbed and retaliated by that Boss Mo, Ye Qiuli quickly remembered that there was such an underworld boss who had a little grudge against him. Lacking strength before, coupled with the fact that he was busy, he didn't have time to deal with this matter for a while, but now that he thinks about it, he doesn't mind going to find that guy's trouble and settle the general account.

Just thinking of it, Ye Qiuli quickly found a large entertainment venue, but just a little bit of looking for something, it attracted those underground people. Originally, those people were still shouting violently, but when they saw that Ye Qiuli simply flicked a few stones and lit the acupoints of several people in the air, and after breaking the steel knives and steel pipes in their hands, they were all dumbfounded, trembling and not daring to move.