The electromagnetic cannon is mainly the principle of electromagnetic ejection applied, which is so simple that a junior high school student can make a simple electromagnetic cannon.

But it's not so easy to make this thing powerful.

First of all, to overcome the inertial force, the electromagnetic repulsion force provided by the electromagnetic coil is not as huge as imagined, under the action of the inertial force of the object, in fact, the initial speed is very slow, basically can be distinguished by the naked eye. The speed of electromagnetic ejection in junior high school physics experiments is not fast, which of course cannot meet the standard of electromagnetic guns.

If you want to increase the electromagnetic repulsion, you either increase the current amount of the electromagnetic coil or increase the voltage, and the best effect is of course to use both together.

As we all know, in order for the solenoid coil to generate more magnetic force, the electrification efficiency is the key, and the better the conductivity of the wire, the stronger the electromagnetic force increased. The best limit is, of course, superconductors, room temperature superconductors have been studied for a century, and they have not been figured out, and now the most suitable is low-temperature superconductors, and the working environment of making a low-temperature superconductor with liquid nitrogen at a low temperature of more than minus 100 degrees Celsius has become the choice of many people.

The increase in voltage and power requires a powerful capacitor to provide it, storing more power and instantly excitation. For this purpose, each electromagnetic gun requires hundreds of sets of capacitors

Of course, this is not the most critical, the most critical thing is that in order to make the shell of the electromagnetic gun obtain a greater initial velocity, the guide rail needs to have as little friction as possible, and there are also multiple stages of acceleration.

Once the conductivity of the electromagnetic track reaches a certain level, the magnetic field lines generated around it can allow the permanent magnet to levitate along its magnetic field lines, and there will be absolutely no deviation. Many of today's maglev videos are made based on this principle. The two magnetic levitation tracks can constrain the permanent magnets more stable, and the parallel two magnetic field lines are like two fixed tracks, and it is difficult for the permanent magnets in them to deviate from this invisible track.

This magnetic confinement track is the barrel of the cannon, once it is energized, the electromagnetic cannonball becomes a suspended state, and it still has 0 friction along the magnetic field lines. And as long as the direction of the two magnetic field lines is kept in the same direction, this thing will be hit in the end, which means which to hit.

As for the multi-stage acceleration of the electromagnetic coil, this is actually the most difficult, and it is difficult to go to the sky in the past, because the human concept of time cannot grasp the energizing gap of the electromagnetic coil at all, but since the atomic clock and the microcomputer control unit have gradually taken shape, the accuracy of one ten-thousandth of a second can be accurately achieved with the microcomputer and atomic clock, and the energizing time of each stage of the electromagnetic coil can be easily calculated according to the acceleration formula.

The electromagnetic cannon designed by Xiao Chu can only achieve five levels of acceleration at most, and the initial velocity is more than 2,000 meters per second, and even if he wants to break through the initial velocity of 3,000 meters per second, he must add several more levels of acceleration coils. However, the magnetically confined orbits and atomic clocks required for that accuracy would be more expensive.

Take the electromagnetic cannon on the Zumwalt-class as an example, it is a multiple acceleration of more than 8 to 14, which is equivalent to the muzzle velocity of the cannonball reaching 10 times the speed of sound, and the muzzle velocity of the missile must be reduced, otherwise, the pressure of the air alone will make the cannonball as hard as hitting the concrete ground. The requirements for artillery shells are also higher. Unlike Xiao Chu, the direct strong magnet column is simply cut by the tail, and then a super-hard tungsten steel armor-piercing warhead is installed.

The power of this thing seems to be small, but the lethality is amazing, the tungsten steel armor-piercing warhead ensures the armor-piercing strength, and then the magnet inside is brittle and hard, once it suffers a powerful impact, it will immediately become shattered and cracked, and the state of breaking into pieces is even more terrifying for the killing after armor-piercing. Xiao Chu once watched some experimental videos on Wikipedia, and the final burst state can break all the members of an armored car into pieces, which is simply ferocious to the point of perversion.

And the tungsten steel armor-piercing warhead can easily penetrate the armor of any armored combat vehicle at a speed of more than Mach 5, except for the frontal armor of the main battle tank of a major country, which cannot penetrate it, other armored vehicles are scum in front of it.

Unless you get aerospace-grade materials, the electromagnetic cannon designed by Xiao Chu has reached its maximum power, and there is really no room for improvement.

Of course, this is not necessarily, if you can get better materials, you may not be able to make something more powerful, but that kind of thing is really not needed.

That's it, with the automatic aiming and control equipment and the high-precision industrial robotic arm, in the case of no one operating at all, this thing can also knock out low-speed flying targets within five kilometers when it turns on active defense, and even if you are lucky, many of them together, high-speed flying targets will be easily picked down.

It's definitely not legal to make this thing, but for the safety of yourself and your family, it's imperative. Because in addition to the mystical law he just figured out, he can only engage in some unregulated things. If he is engaged in gunpowder weapons, it may be simpler than this, as long as the steel is passable, there are machine tools, especially five-axis machine tools, and all the gun parts can be easily handled by him. But this thing is not conducive to hiding, as long as you know how to search, or even just look at the appearance, you can basically judge it.

And the electromagnetic cannon is different, to put it bluntly, when it is not assembled, it is a bunch of originals, even if it is assembled, it is just a rectangular box with nitrogen cylinder cooling, disassembled, there is still a bunch of incomprehensible components inside, there is neither a trigger, nor a barrel, completely beyond the ordinary people's perception of guns, even if they perceive that there is a problem with the five sets of electromagnetic coils, I am afraid they may not understand what it is. Because in appearance, it is too much like a set of communication antennas. As for the forged equipment label, it is also clearly marked that the directional high-power self-cooling communication module. This also explains why there was a huge three-layer insulated gas cylinder in the past. And also clear instructions, cryogenic nitrogen, the word danger. What's even more extravagant is that he also bought several compressors for small air compression to refine nitrogen, okay, this thing, the price of this thing in the international market has reached 10,000 US dollars, if it is not ordered from the black market, it will not be available in China at all.

This is not an exaggeration, and what is even more nonsense is that he also commissioned a top hacker to forge a set of equipment installation lists by placing orders from the dark web. The equipment installation and filing belonging to a telecommunications company, a complete set of evidence chain does not need to be worried about by him at all, and the hackers will get it. And this hacker is said to be the senior technical director of the company, this is inside and out, if it weren't for the 200,000 extra money, he wouldn't have done it. And it's still 200,000 for two years, and if you want to continue to use this equipment list after two years, you have to renew it.