Tower Defense Strategy

C National Academy of Sciences discovered the identity of the octopus, but in order to avoid being forced away by excessive purpose, it has not yet decided how to get information from him.

Outside the Academy of Sciences, various departments have been busy recently, especially in the areas of architecture, industry, and weapon design. A large group of people have not touched their beds for more than half a month.

The progress is also gratifying enough.

The new superconductor White Magic ZERO enters the mass production trial production stage. At this stage, the equipment will run through the complete mass production process, and will stop production at any time to adjust the equipment according to the situation.

The new sodium battery production base is still early, but the battery factory that has been transformed has also begun trial production. Anyway, before ensuring that it can fight the monsters, this thing will not be supplied to the commercial chain in the short term, and the daily output of several hundred tons is pieced together. Can still be used.

The Weapon Design Bureau got the performance table as early as when these things were ready for mass production, and entered the weapon design stage ahead of time.

The energy density of the sodium battery that has been put into production is 4.2 times that of the existing high-performance lithium battery, and the eight-fold version has to wait for the new production chain of the new factory.

Compared with Datuo's hydrogen fuel cells, solid-state batteries are easier to increase the final current and voltage. Therefore, although the performance improvement of the 4.2 times version is not large, it is still better than the existing scheme of a large number of teams with a laser tank.

After the superconductor problem is solved, the energy consumption of electromagnetic weapons is actually much smaller than that of lasers, because most of the energy will not be converted into kinetic energy, and will flow back to the battery pack along the closed loop of the circuit.

The specific battery carrying capacity has not been released during the weapon design. The design bureau decided to be conservative and provide a buffer time for the energy return to the battery pack through the capacitor bank.

In the end, the previous large fleet of more than a dozen vehicles was transformed into four vehicles. The weight of the battery vehicles was controlled below 50 tons, and the fuel-powered vehicles were completely abandoned.

An electromagnetic tank with three battery vehicles requires a certain amount of preparation time before the battle, but the efficiency is much better than that of a large fleet.

The electromagnetic tank uses a power system of more than ten tons to ensure that two shells can be fired after leaving the convoy.

The caliber is 50 mm, and the projectile material is temporarily unavailable, but the shape can be "learned" from the large-caliber projectiles in the game.

The electromagnetic bullets in the game are relatively long and have engravings.

It stands to reason that the resistance is related to the smoothness of the surface. Engraving should increase the resistance, but the experimental results have proved that it can indeed reduce the resistance.

The Weapons Bureau also didn't want to understand the principle. It was a matter of physics and fluids. They only needed to know that this would reduce resistance.

They don’t know. In fact, at this time, people in the Institute of Fluids who have in-depth study of related alien knowledge can indeed give an explanation: this is a plasma defense measure of the missile body, which uses pneumatic heating to make part of the surface burn off in advance. A plasma jet is formed to reduce the resistance in the second half. Tuqiu's existing materials are obviously still a few hundred million short of this theory, so they didn't mention this at all.

In short, although some theoretical links were skipped, before the mass production of superconducting wires came out, the Weapons Bureau had already tested it with old-fashioned experimental electromagnetic guns.

When the mass-produced superconducting enameled wire is in place, the Weapons Bureau immediately pulled the team to the designated manufacturer to build artillery and conduct the second round of testing.

In science fiction works, I always like to make high-energy weapons with square cross-sections, and the body of the gun is often divided into several parts, which seems to be more sci-fi.

The Weapons Bureau tells you, you still have to make it round!

Of course, some materials can be wasted to make the shell more square, but the more you make, the more mistakes you make, which may cause some unexpected interference to the weapon.

Now everyone does not have time to do a lot of preliminary theoretical demonstrations. According to the requirements of cooling and maintenance, it will be round in the end.

The caliber of 50 millimeters has an outer diameter of 220 millimeters, and the thermal insulation coating is thicker.

The white magic guide ZERO theoretical superconducting temperature can exceed zero degrees Celsius, but the actual mass production is 263K, which is ten degrees below zero. This temperature is not difficult to reach for the current coolant system, but the Weapon Bureau considers environmental heat and projectiles due to technical problems. The friction and heat generation in the barrel caused some superconductors to temporarily fail or even melt, and other factors have made it like this.

Such a thick tube needs to be long enough to accelerate the projectile, and finally it is more like an armored self-propelled gun.

In fact, the concept of a turret is still used instead of a new truck gun. It is also the result of cooling. Not only does the electromagnetic gun need to be cooled, the entire electrical system is the same. The closed turret is easier to control the temperature.

Notify the Electric Power Bureau to start a long-distance fire test with a mobile substation.

The first few guns couldn't hit anything at all. This was normal. The soldiers in charge of the operation had never used electromagnetic weapons. The staff in the Weapons Bureau did not know how the trajectory of the electromagnetic projectiles changed several kilometers away.

After twenty shots, one shot finally hit a steel target five kilometers away.

The penetration depth is not ideal, only a few hundred millimeters. This is related to the material of the projectile, but the kinetic energy is real. If the target is not completely penetrated, all the kinetic energy will be eaten. When the projectile penetrated into the steel target, a huge pit appeared. Observing the temperature generated at the moment of deformation, the rust on the surface of the steel target was partially deoxidized!

This kind of kinetic energy, if the distance is a little closer, can overturn the body of the enemy tank without any explosives.

However, people in the Weapons Bureau were not satisfied with the results, and the power did not constitute a qualitative change to traditional gunpowder weapons.

No way, the live ammunition experiment continued, and they ran to find a way with people from the Academy of Sciences.

There are two ways to increase the current and increase the weight of the projectile.

Increasing the current is straightforward. For the same coil, as long as the current is larger, the projectile will exit the bore faster. However, considering the impact of the air resistance at the ultra-high speed, the benefit from ten kilometers and twenty kilometers away will be very poor. , It is possible that the current is increased ten times, and the kinetic energy of the impact point has only increased by several tens of percent, or even cannot be doubled.

The weight gain of the projectile is the reverse, reducing the initial speed, mainly using the mass to carry the kinetic energy, because the speed becomes lower, the resistance loss will be relatively small, and the striking ability of about ten kilometers will be much improved!

For example, the former 500g projectile has a final velocity of three kilometers per second at a certain distance; the latter uses two kilogram projectiles, and the initial velocity is less than 30%, because the path loss is slightly smaller, and the end velocity is also two kilometers per second. Second. The final kinetic energy ratio of the two is 9:16, and the latter is more than 70% higher.

The latter is obviously higher in terms of energy yield in the surface environment. Conversely, if it is placed outside the atmosphere or in an ultra-high altitude environment, only the former needs to be considered.

In addition to these two, there are similar effects such as increasing the number of coils, but the price is to continue to increase the weight of the weapon body, and the tank-based system cannot support improvements in these directions in the short term.

While discussing, I also found someone to cut the electromagnetic bomb in the game to see if there was a difference in density.

The result did not.

But there were unexpected gains.

Operators are habitually encountering any problems, first ask the NPC, and one NPC said that the power of the electromagnetic bomb is not ideal, and gas compensation can be considered.

Continue to ask, and actually got a conceptual sketch.

The air resistance does not only include the friction in the front, the rear vortex is a low-pressure area. If the speed of the object is too high, the pressure of the wake vortex will approach the vacuum, and the suction of the wake vortex is also part of the resistance. The weapon bureau uses the spindle projectile to reduce the impact of the wake vortex, but because the speed is too high, the gas expelled by the forward projectile has no time to return, and the impact is still not small.

The concept of gas compensation is similar to the rocket concept, but the purpose is completely different. The rocket is to provide thrust, and gas compensation only compensates for the pressure difference between the wake vortex and the outside, and does not require full compensation.

The actual operation is simpler. Drill a hole behind the projectile and fill it with solid fuel.

For an electromagnetic bomb with a length of more than one hundred millimeters, the distance that needs to pass and the ratio of the length of the bomb is larger than the ratio of the rocket through the atmosphere. This small hole cannot affect the electromagnetic performance too much.

There are a lot of things to pay attention to, but they are all problems that have been solved in the development of gunpowder and rockets, and they are not at the same level as the difficulty of developing new types of missiles.

The gas-compensated projectiles were delivered directly from the local factory, filled with medicines on the spot, and several versions were made on the spot, so that the trial vehicles were tested and fired. Regardless of the theoretical basis of the supercalculation results, the results showed that the impact was quite large and the best performing one. This kind of solid fuel increases the terminal kinetic energy by more than 15%.

This is 15% of the electromagnetic projectile, which is equivalent to an extra 88mm solid shell.

Continue to teach projectiles in other areas~www.wuxiaspot.com~ It is hoped that without power and superconducting systems, a 50mm electromagnetic gun can be used to shoot a tank gun at a distance of 10 kilometers.

But how can the power system not move? With the increase in the actual test data, the on-board power system is expected to remove at least a few percent of the redundant weight. The superconducting coil scheme is not so conservative. It is not unacceptable to make the superconducting wire thinner.

The head of the Weapons Bureau had already blown out the cowhide during meetings with other departments. Within three months, at a distance of ten to twelve kilometers, five times the kinetic energy of the existing 120mm tank gun and eight times the energy density. When the new sodium battery comes out, this value can continue to push up!

With this power, even if you fly another ten kilometers, you should be able to beat the monster, but the increase in distance can prevent the attacking unit from being hit by certain monster skills. As long as it can guarantee the continuous launch ability, it has practical significance.

In fact, it has only been a few months, and now it's time to test the combat performance of the car, which is used to fight humans' own ground units. The king of land warfare is also well deserved.

But no matter how difficult the application and running-in of new technologies are, the monsters are still acting at their own pace.

What follows will be a real disaster.