The last human in the universe

Chapter 106 Reactive Armor
If one were to be selected among those who participated in the resource collection mission of the Jupiter system, who contributed the most to this mission, then no matter whether it was Zhao Changxing or anyone who knew about it, they would say Cheng Xuanjia without hesitation. name.

This person with a profound military heritage is like a hard and thick rock. As long as he is there, no matter how huge the storm is, no matter how great the risk is, it will not be able to overwhelm the people in the Jupiter system.

During these years, including the stage when Voyager [-] left Sedna to go to the Jupiter system at the beginning, the group of people who took on the mission of saving civilization have suffered so many dangers and suffered so much that even Zhao Changxing himself can count them all. I don't know.

But every time it comes to the end, it can save the day.Not only that, but the people there almost overfulfilled the task that Zhao Changxing had assigned at the beginning.

When the resource consumption exceeded the previous estimate and the resource crisis came earlier, the Jupiter system even delivered a huge amount of materials to Sedna in advance, rejuvenating the entire civilization.

Only in this way can there be a series of things such as the continued development of subsequent civilizations and the formation of an army.

Cheng Xuanjia is undoubtedly the most suitable high-level human civilization to continue to sit in the Jupiter system.In fact, Zhao Changxing also hoped that Cheng Xuanjia could continue to stay there.

But this year, Cheng Xuanjia is already 72 years old.

Counting the at least 8 years required for the return journey, he will be 80 years old.

If he was allowed to stay there, then...he might not be able to return to Star Sedna until he died.

After all, the next time a spaceship returns to Star Sedna is unknown when it will be.

Zhao Changxing couldn't make such an inhuman arrangement.He finally decided and chose 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 the field 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 is dominated by young people at the time.They all spent the early days of their lives here on Sedna, and there are memories of their "hometown" here.

The latter are mainly those born during the journey, or simply born in the Jupiter system.For them, the distant Sedna Star is more like a symbol, but they have no memory about it.

Zhao Changxing respected their choice.

He wasn't worried that this would divide human civilization.Because regardless of the Jupiter system or the Sedna planet, all human beings will receive a complete education in their infancy, thus generating a deep-seated identification with human civilization.

Those people just didn't agree with Star Sedna.

Having said that, does Zhao Changxing himself fully agree with Sedna?Probably not.

Earth is the only hometown he identifies with.

It doesn't really matter much.Anyway, if human civilization continues to develop, it will soon enter the inner solar system on a larger scale, and the transportation and communication between the two parties will become more convenient.

Jupiter, Sedna, all the same.

After arranging the affairs in the Jupiter system, at this stage, Zhao Changxing's main energy was put on the construction of the army.

With the full support of the human government, the first military factory quickly produced the first generation of combat spaceships.

It is different from the time of the war with the deep space civilization.The combat spacecraft at this moment undoubtedly uses the latest, highest performance, and highest reliability ion propulsion, and its combat radius is greatly expanded.The kind of things that go out to fight for a while, and then have to leave the battlefield and come back to refuel will basically never happen again.

Each spaceship has a small fusion power station installed inside, which is responsible for providing energy and power for the entire spaceship.And the fusion power supply mode is adopted, a technology that has been researched before but has not been practically applied, and can finally be applied to the spacecraft.

That is reactive armor.

Reactive armor has been used in practical applications as early as the earth era, when people were still using tanks and armored vehicles to fight.However, people at that time adopted explosive reactive armor. The principle was probably that explosives were laid in the armor layer of the vehicle in advance. When foreign bullets or shells hit the armor, the striking force would automatically detonate the armor layer. Among them, the explosives laid in advance weaken the impact of foreign bullets or shells through the explosion of their own explosives.

This model has been verified in practice and proved to be effective.However, this method is not suitable for application in space battleships.Because the projectiles faced by the space battleship are mainly electromagnetic guns, and the speed of the electromagnetic gun projectiles is too fast, and it itself is too small.

At the moment, the technology people are using is another kind of reactive armor, or it can also be called electromagnetic armor.

The principle is also very simple.

This armor is divided into two layers, separated by a layer of insulation in the middle.At the same time, the two layers of armor were connected to high voltage electricity.When the external electromagnetic gun projectile penetrates the outer armor and the insulating layer, and touches the inner armor, it is equivalent to the circuit being connected.

At this time, a large current pulse passes through the electromagnetic gun projectile, causing the magnetohydrodynamic instability of the projectile itself to dissipate, thereby weakening its lethality, so that it can no longer penetrate the inner armor.

Experiments conducted by people have shown that an electromagnetic gun projectile that can easily penetrate a one-meter-thick standard armor cannot penetrate even a 20-centimeter armor after adopting the technology of electromagnetic armor.

Unless an insulating material is used to make projectiles.However, 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 use the method of outer metal and inner ceramic to make projectiles, but this will face many problems, such as unstable acceleration, insufficient strength of metal materials, deformation when hitting the target, etc., at least at the current stage There is no way people can get over it.

In the past, the main reason why electromagnetic armor technology has not been applied in practice is that the energy consumption is too large and it is not suitable for equipment on moving targets.But now, the fusion generator mechanism is adopted inside the combat spacecraft, and of course energy consumption is no longer a problem.

The application of this technology can greatly improve the survival rate of combat spaceships in the battlefield.

In addition, there is another type of electromagnetic armor, called active electromagnetic armor.The principle is to monitor the surroundings of the spacecraft through sensors at all times, and once it detects an incoming projectile, it will proactively launch a projectile to hit the enemy's projectile, so as to achieve the effect of defense.

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 of combat spacecraft is also equipped with up to 10 small detection radars and corresponding optical monitoring equipment.The weapon system is dominated by miniaturized electromagnetic guns, and 13 of them are equipped on different parts of the hull.

The laser cannon is not equipped for the time being because some technical problems have not been solved.

The guided weapon is a small interplanetary missile - or it can be called a rocket.It can accelerate itself to a speed of up to 13.9 kilometers per second at a standstill.

In actual combat, this speed should be added to the speed of the spaceship itself.The superposition of the two is enough to make its maximum speed reach more than 20 kilometers per second.

Each of these combat spaceships has a mass of hundreds or thousands of tons, and the longest part 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 to understand its performance, Zhao Changxing was full of emotion.

He remembered hundreds of years ago, when he led 500 soldiers and drove a chemical fuel spacecraft to expedition to the deep space star.

At that time, if you have the current spaceship, not too many, just a few, it will be easy to destroy the deep space civilization.

This is the improvement in strength brought about by technological progress.

The slight emotion in my heart disappeared immediately.Zhao Changxing's expression became serious again, and he looked at the war commissioner who was mainly responsible for the training of soldiers: "Committee Li, let's 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 4000 soldiers recruited into the army are mainly divided into three.

One is the study of war theory, that is, learning some basic knowledge of interstellar warfare, such as the main means of killing and main combat methods of interstellar warfare.

The second is simulation training, learning the operation skills of various instruments and equipment, learning some emergency repair knowledge, understanding the operating principle of the spacecraft, etc.

The third is discipline training and physical training.Disciplinary training is primarily achieved through practice queues and the rigors of everyday life.To put it bluntly, it means things like military posture and internal affairs.Physical training is running, trail running and so on.

Things like standing in a military posture and walking forward are actually meaningless in actual combat.The enemy will not be merciful just because a person walks well in a military posture and folds the quilt neatly.Its main significance is reflected in discipline, obedience, collectiveness, and the training of individual will.

These things, no matter in ancient wars or interstellar wars, are essential things.

The most important point is that these trainings will also change a person's mental outlook from head to toe, so that people can detect the difference between them and civilians at a glance, thus completely completing the division between soldiers and civilians.This is also of great benefit to shaping the sense of identity and honor.

Now, after almost two years of training, the fighters finally have the opportunity to actually operate the combat spacecraft made by human civilization itself.

At this time, Zhao Changxing received an urgent message.

The news comes from the Voyager [-] spacecraft that is returning.

"Leader, Captain Cheng Xuanjia... is dying soon."

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(End of this chapter)