If one were to select the person who contributed the most to this task among those who participated in the resource collection mission of the Jupiter system, then whether it was Zhao Changxing or anyone who knew about this matter, they would not hesitate to name Cheng Xuanjia.
name.
This man with a profound military heritage is like a hard and heavy rock. As long as he is there, no matter how huge the winds and waves are, no matter how huge the risks are, they will not be able to overwhelm the people in the Jupiter system.
In these years, including the initial stage when Voyager 1 left Sedna and headed for the Jupiter system, this group of people with the mission of saving civilization have suffered so many dangers and endured so much suffering that even Zhao Changxing himself can count.
Not clear.
But every time, the danger was saved in the end. Not only that, the people there almost exceeded the tasks originally assigned by Zhao Changxing.
When resource consumption exceeded previous estimates and the resource crisis came ahead of schedule, the Jupiter system even transported a huge amount of materials to Sedna in advance, revitalizing the entire civilization.
In this way, the subsequent development of civilization and the formation of an army were achieved.
There is no doubt that Cheng Xuanjia is the most suitable high-level human civilization to continue to sit in the Jupiter system. In fact, Zhao Changxing also hopes that Cheng Xuanjia can continue to stay there.
But this year, Cheng Xuanjia is 72 years old.
Counting the at least 8 years required for the return journey, he would be 80 years old.
If he continues to stay there, then...he may not be able to return to Sedna until his death.
After all, we don’t know when the next spacecraft will return to Sedna.
Zhao Changxing could not make such an inhumane arrangement. He finally decided to choose a new candidate to replace Cheng Xuanjia.
So Cheng Xuanjia could finally come back.
Many people chose to return with Cheng Xuanjia.
After wandering in other places for too long, they are extremely eager to return to the embrace of human civilization. But at the same time, there are also many people who choose to stay in the Jupiter system.
The former were mainly young people. They all spent the early stages of their lives here on Sedna, and they have their memories of their "hometown" here.
The latter are mainly people who were born during the journey, or simply born in the Jupiter system. For them, the distant star Sedna is more like a symbol, but they have no memory of it.
Zhao Changxing respected their choice.
He is not worried that this will cause the division of human civilization. Because no matter here in the Jupiter system or on the planet Sedna, all humans will receive a complete education at an early age, thus developing a deep-seated identification with human civilization.
Those people just don't agree with Sedna.
Having said that, does Zhao Changxing himself completely and completely agree with Sedna? I'm afraid not necessarily.
The earth is the only homeland he identifies with.
This actually doesn't matter much. Anyway, if human civilization continues to develop, it will soon enter the inner solar system on a larger scale, and transportation and communication between the two parties will become more convenient.
Jupiter, Sedna, all the same.
After arranging things in the Jupiter system, at this stage, Zhao Changxing's main focus was on the construction of the army.
With the full support of the human government, the First Military Factory quickly produced the first-generation combat spacecraft.
It is different from the time of the war with deep space civilization. The combat spacecraft at this moment undoubtedly uses the latest, highest performance, and most reliable ion thruster, and its combat radius is greatly expanded. The kind that goes out to fight for a while,
Basically, having to leave the battlefield and come back to refuel will never happen again.
Each spacecraft is equipped with a small fusion power station inside, which is responsible for providing energy and power to the entire spacecraft. The fusion power supply mode is adopted, which has been studied in the past but has never been put into practical use.
Technology can finally be applied to spacecraft.
That's reactive armor.
Reactive armor has been used in practical applications as early as the earth's age, when people were still using tanks, armored vehicles, etc. to fight. However, what people used at that time was explosive reactive armor, and its principle is probably,
Explosives are laid in advance in the armor layer of the vehicle. When foreign bullets or artillery shells hit the armor, the impact force will automatically detonate the explosives laid in advance in the armor layer, weakening the foreign bullets or shells through the explosion of their own explosives.
of striking power.
This model has been actually verified and proven to be effective. However, this method is not suitable for use in space battleships. Because the projectiles faced by space battleships are mainly electromagnetic guns, and the speed of electromagnetic gun projectiles is too high.
Fast, but itself too small.
At this moment, the technology used by people is another type of reactive armor, or it can also be called electromagnetic armor.
The principle is also very simple.
This kind of armor is divided into two layers, separated by a layer of insulator in the middle. At the same time, both layers of armor are connected to high-voltage electricity. When an external electromagnetic gun projectile penetrates the outer armor and insulation layer, it contacts the inner layer.
When a layer of armor is applied, it is equivalent to the circuit being connected.
At this time, a large current pulse passes through the electromagnetic gun projectile, causing the projectile's own magnetohydrodynamics to become unstable and disperse, thereby weakening its lethality and making it no longer able to penetrate the inner armor.
Experiments conducted by people have shown that an electromagnetic gun projectile that can easily penetrate one meter of standard armor cannot penetrate even 20 centimeters of armor after adopting electromagnetic armor technology.
Unless the projectile is made of insulating materials. But the principle of the electromagnetic gun is to use electromagnetic acceleration technology to accelerate the projectile. If the projectile is made of insulating materials, it cannot be accelerated at all.
Or you can make projectiles with outer metal and internal ceramics, but this will face many problems, such as unstable acceleration, insufficient strength of metal materials, deformation when hitting the target, etc., at least at this stage.
People can't overcome it.
In the past, the main reason why electromagnetic armor technology has not been put into practical use is that it consumes too much energy and is not suitable for equipment on moving targets. But now, combat spacecraft have adopted fusion generator mechanisms inside, so energy consumption is no longer a problem.
The application of this technology can extremely improve the survival rate of combat spacecraft on the battlefield.
In addition, there is another type of electromagnetic armor, which is called active electromagnetic armor. Its principle is to monitor the surroundings of the spacecraft through sensors at all times. Once it detects an incoming projectile, it will proactively launch a projectile.
To collide with enemy projectiles to achieve a defensive effect.
But this kind of mechanism obviously cannot be created at the moment, and people can only leave it for later.
In addition to reactive armor, fusion reactor power supply, and ion thruster propulsion, the new generation combat spacecraft is also equipped with up to 10 small detection radars and corresponding optical monitoring equipment. The weapon system is mainly a miniaturized electromagnetic gun, respectively.
There are 13 units equipped in different parts of the hull.
The laser cannon is temporarily unequipped due to some unresolved technical problems.
The guided weapon is a small interstellar missile - or it can be called a rocket. It can accelerate itself to a maximum speed of 13.9 kilometers per second in a stationary state.
In actual combat, this speed must be added to the speed of the spacecraft itself. The superposition of the two is enough to make its top speed reach more than 20 kilometers per second.
Each of these combat spaceships has a mass of hundreds to thousands of tons, and the longest point is as high as 26 meters.
When the combat spacecraft prototype was placed in front of Zhao Changxing, and after being introduced by military industry experts and understanding its performance, Zhao Changxing was filled with emotion.
He recalled hundreds of years ago when he led 500 warriors and drove a chemical fuel spacecraft on an expedition to the deep space star.
At that time, if you had the kind of spaceships you have now, not too many, just a few, it would be easy to destroy deep space civilization.
This is the improvement in strength brought about by technological progress.
The slight emotion in his heart disappeared immediately. Zhao Changxing's expression became serious again, and he looked at the War Commissioner beside him, who was mainly responsible for the training of soldiers: "Commissioner Li, please arrange practical training for the soldiers as soon as possible."
Li Dajiang put away the joy on his face and said seriously: "Yes, leader!"
At this moment, the training subjects for the first batch of 4,000 soldiers recruited into the army are mainly divided into three.
The first is the study of war theory, that is, learning some basic knowledge of interstellar combat, such as the main means of destruction and main fighting methods in interstellar combat.
The second is simulation training, learning the operating skills of various instruments and equipment, learning some emergency repair knowledge, and understanding the operating principles of the spacecraft, etc.
The third is discipline training and physical training. Discipline training is mainly achieved through practicing queues and the strict requirements of daily life. To put it bluntly, it is things like military posture and housekeeping. Physical training is running and cross-country running.
etc.
Things like standing in military posture and walking forward are actually meaningless in actual combat. The enemy will not show mercy just because a person walks well in military posture or has neatly folded quilts. Its main significance is reflected in discipline.
, obedience, collectiveness, and the tempering of one's will.
These things are indispensable in both ancient wars and interstellar wars.
What is particularly important is that these trainings will also change a person's mental outlook from head to toe, allowing people to notice the difference from civilians at a glance, thereby completely completing the division between soldiers and civilians. This pair
Building a sense of identity, honor, etc. also has great benefits.
Now, after training for almost two years, the soldiers finally have the opportunity to actually operate the combat spacecraft created by human civilization itself.
At this time, Zhao Changxing received an urgent message.
The news comes from the Voyager 1 spacecraft which is returning.