"Start the 3004th nuclear fusion thruster simulation!" in the science and technology simulator, Du Xingyu carried out the simulation tirelessly.

    The nuclear fusion thruster can not be completed simply by replacing the nuclear fission reactor in the original nuclear power thruster with a nuclear fusion reactor.

    Nuclear fusion has more energy output, which requires power devices that can withstand more energy and higher power.

    This is another great test for the structural design of the device and new materials.

    "The design concept should be the same as that of the hybrid propulsion group of the Mars spacecraft. Nuclear thermal power and nuclear plasma propulsion ensure the flight state in the planetary atmosphere and space at the same time."

    "The output power of a combined power unit is too low... It is designed as one main power unit and four auxiliary power units, with the nuclear fusion reactor as the energy source, and five power units output at the same time, generating the power that can lift up space warships weighing tens of thousands of tons..."

    Du Xingyu is constantly modifying and simulating, which is the most powerful propeller he has ever designed.

    The maximum load of previous spaceships was only more than 1000 tons, which has increased dozens of times this time!

    Science and technology simulator: "1 + 4 combined nuclear fusion thruster simulation..."

    In Du Xingyu''s mind, a Spherical Tokamak device is undergoing a stable fusion reaction. The output energy is first converted into heat energy, which heats the working medium and oxidant to produce huge propulsion.

    The model space warship began to take off and burst out of the atmosphere. The power unit was replaced with a nuclear power plasma propeller in time. The nuclear fusion energy began to generate a strong magnetic and strong electric field, controlled the high-temperature plasma jet, and formed a dark blue tail flame behind the warship, allowing the warship to continue to accelerate its flight in space.

    ……

    The design and manufacture of space warships is definitely a super project beyond space elevators. After all, there has been some engineering experience in the construction of artificial islands, towers, space stations and so on.

    But space warships, this is the first time in human history!

    Experts from all over the world will also face various problems. In order to build the first space warship flying to the stars, China has built a huge "super dock" along the northern coast, Longgang.

    The source of funds for the construction of space warships comes from the energy welfare brought by the use of controllable nuclear fusion technology in social production!

    Yes, after the successful test of the "Jinwu" device, China immediately began the commercial promotion of controllable nuclear fusion, and began to build controllable nuclear fusion energy stations in China and all over the world.

    The use of new energy has brought the foundation for the development of the whole human society. In recent years, due to the breakthroughs of various technologies, civil technology has also entered a period of rapid development.

    The economic growth and the cooperation of all countries in the world have satisfied the economic foundation of building space warships.

    The root of all this lies in Du Xingyu. If he hadn''t used the scientific and technological simulator to overcome these technical problems, I''m afraid now humans have thought about how to escape the earth.

    ……

    Three years later, Longgang dock.

    The huge space warship body is being spliced. The hundreds of meters long ship body is erected in the super dock. Its appearance is silver, and its edge is like a sharp blade, as if it can cut time and space.

    At the top is a sharp "arrow". This shape has its special significance. A new weapon system will be released from here.

    This is also Du Xingyu''s main work after completing the nuclear fusion thruster, the design of space weapons.

    In space, conventional weapons have lost their effectiveness, and long-distance space nuclear explosion technology and energy weapons are the most effective attack methods.

    Those nuclear weapon experts of space hydrogen bomb have solutions. Du Xingyu mainly designs "laser weapons". Using the huge energy generated by nuclear fusion, he arranges ultra-high temperature laser arrays in warships to form a laser emitted in a straight line at the speed of light. It can melt almost any metal and produce ablation, shock wave and radiation.

    Such destructive power is even more powerful than space nuclear explosion at a single point!

    In addition to the main body and internal mechanism, the space warship is also equipped with other weapons and auxiliary equipment. For example, the super missile with the ability to strike in the atmosphere, covering the whole planet, supporting small space fighters, and some newly developed military robots.

    "The splicing and subsequent overall test of the ship body will take two months, which is the fastest time," Hu Chun, the chief engineer in charge of the ship body engineering, reported to Du xingyuhui.

    In three years, it has been very hurried for mankind''s first space warship. Almost all the world''s top military enterprises and high-tech companies participated in the manufacturing.

    "Two months, the progress needs to be accelerated, but the construction quality needs to be guaranteed." although he has said it many times, Du Xingyu still couldn''t help telling him.

    "I''ll guarantee my life!" Hu Chun said seriously. He was an engineer born in a soldier and was never vague about his task.

    ……

    When we are busy building space warships on earth, humans are also constantly launching exploration satellites to the solar system to look for the traces of unknown enemies. Unfortunately, we have nothing at present.

    What mankind pays most attention to is still the star of death!

    Now they can confirm that this is a kinetic weapon launched by alien civilization!

    After sacrificing three foreknowledge detection satellites, they speculated that this "kinetic energy weapon" was very simple.

    It has few devices except a large asteroid propeller and laser defense system.

    But such a simple weapon, relying on the mass and speed of the death star, can bring powerful kinetic energy and destructive power, making the whole mankind struggle!

    "We''ve figured out the laser defense device on the death star. The foreseer 5 detection satellite will never be destroyed. This time we can get more information!" the death star observation team of the human alliance is making a new round of observation on the death star.

    A detection satellite approached the death star again. At this time, it has been eight years since Du Xingyu predicted that the death star has flown two billion kilometers during this period, half of which is still far from the earth.

    In the photos sent back by the detection satellite, the propeller behind the death star is still cold. The detection satellite gradually approaches and tries to take photos from various angles. This time, the laser weapon does not appear.

    "Laser weapons also need to consume a lot of energy!" said a space military expert excitedly. "Our guess is right. The energy inside the death star has been exhausted! Now the laser weapons can''t be used!"

    "Great, then we can launch a small probe into the thruster to check the situation in the next step!" everyone was delighted. The survival time of forerunner 5 has exceeded more than three times that of the previous four generations of exploration satellites!

    Just as they were about to send a new mission command to the forerunner 5, a new set of photos came.

    In the photo, the propeller of the death star, which has been silent for eight years, emits blue flame light and has been started!

    This is not a flame, but a scene in which a large number of substances are burned into plasma and ejected.

    Death Star, accelerated again!

    "It still has energy!" everyone trembled like falling into an ice cave! At first, they all guessed that the death star had no energy and could no longer accelerate.

    But now, the facts tell them that this is just a beautiful delusion, and the death star can accelerate!

    This means that it will hit the earth faster and in a shorter time! The kinetic energy carried will double again!

    The foresight 5 probe satellite also hung up and was punctured by a laser, but it has sent back enough information.

    Death Star accelerated again!

    "It''s over, it''s really over this time!" an observer turned pale. He knew that the disaster would worsen. The hidden enemy is like playing with them!

    "Do we still have a chance to resist?" the shadow called "despair" enveloped everyone''s heart.

    The news was soon reported, and the human Guardian alliance decided to hold an emergency meeting.

    "If we continue to accelerate like this, our asteroid impactor can''t stop the Death Star!" someone couldn''t hurry.

    Du Xingyu was also full of anxiety, but he forced himself to calm down. After so many years, he had developed the calmness of Taishan''s collapse without changing his face.

    "Don''t worry, I''ll keep my previous point of view," said Du Xingyu. "There isn''t much power left in the Death Star!"

    "To start the propellers of the death star, we must consume energy and eject materials. If its power source is enough, it should have accelerated long ago and the earth would have been destroyed long ago! According to the radiation detection of the forerunner 5, the radiation inside the death star is not high. Even if there are anti radiation devices to block it, it means that there is not much energy storage."

    "For this reason, I guess the enemy behind us wants to give us a threat and let us mess up."

    "The acceleration of Death Star will not last long. After a period of time, it will stop!"

    "Now we can only wait except to speed up the plan." the members felt a deep sense of powerlessness.

    Du Xingyu''s guess did not go wrong. According to the observation of the space telescope, after the Death Star accelerated for a week, it stopped accelerating and continued to fly by inertia.

    Even so, it will hit the earth two years earlier, and its kinetic energy will increase significantly.

    ……

    In a house somewhere in England, a gray haired and haggard old man was writing at his desk.

    He is a famous astronomer and one of the members of the death star observation group of the human Guardian alliance, Hansen.

    "The death star is accelerating again, leaving us less and less time... I don''t know whether humans still have a chance to deal with it. Various evidences show that in addition to the death star, we have to deal with alien civilizations that don''t know where they are... They are like upcoming demons, torturing my heart every day and night, and I can''t bear it anymore... My children, please forgive me for not being able to Continue to accompany you. I''d like to say goodbye to you, but this news can''t be known to the world, otherwise they will suffer from torture and suffering like me every day... "

    Hansen finished writing the letter and was ready to throw it into the burning fireplace, but when he was about to stand up, his eyes darkened and fell directly to the ground.

    Hansen, dead! The letters he left were put on the table with wet ink.