Chapter 2291: Laser jamming system

Under the leadership of Qin Guan, they came to a tank that had just rolled off the assembly line, and they could see that the barrel of this tank was obviously longer.
When talking about the length of the barrel, the professional term is double diameter. How many times the barrel length is the caliber is an important indicator. The longer the barrel is, the longer the propellant will work. When the high-temperature and high-pressure gas is ejected from the muzzle, all energy is lost.
Therefore, increasing the length of the barrel can increase the speed at which the gun can eject. For armor-piercing projectiles, the speed is king, and the higher the speed, the higher the penetration.
The latest tank gun developed by Han Guo is already 55 times the caliber. If you continue to increase the length of the barrel, you will face many problems, such as the tiny deformation of the barrel itself under the action of gravity, the need to rotate the turret more powerfully, and in the woods. In other areas, the inconvenience of long barrels, etc.
Another important fact for the date palm country to accept this plan is the life span of the gun barrel.
The life span of a tank gun is not long. If you use the accumulation of time, it is a few seconds, and the number of shells is hundreds of rounds.
Tank guns have high chamber pressure. Each shot is a ravaged by the shells and barrels, as well as the burning of the propellant. Therefore, the barrels are prone to mechanical fatigue and so on in this harsh environment. It is the Hans State with the most advanced metallurgical technology, and the barrel life of their tank guns is also difficult to exceed 500 rounds. As for the bear country, due to the backward technology, the barrel life of their tank guns is about half lower. When launching grenade and armor-piercing shells, the life span is 300 rounds, and the life span of firing armor-piercing shells is only 200 rounds.
When the armor-piercing projectile is fired, the chamber pressure is the highest and the life span is the lowest. Compared with the life span of a few thousand rounds of an ordinary howitzer, it is absolutely short.
The time is very short, which can be calculated. For example, the muzzle velocity is 1800 m/s. According to the uniform acceleration movement, the average velocity of the shell in the barrel is about 900 meters per second, and the barrel length is 6 meters. The time the shell is in the barrel is 6 divided by 900 meters per second. Multiply it by 500 rounds, so that the life span of a barrel is less than 4 seconds.
Therefore, the tank gun looks majestic, but it is actually a kind of squeeze life. If it exceeds the lifespan, it can of course be used, but it has to bear the risk of bombing. This is still smooth boring, and the rifled gun is even worse. After a few hundred rounds are fired, the rifling in the barrel will be flattened. If you fire again, the accuracy cannot be guaranteed.
In these years of high-intensity wars, the 79 tanks equipped in the Date Palm National Tank Corps belonged to the elite. Therefore, they were used very frequently. In a few years, most of the tank guns had reached the end of their life. With the opportunity to upgrade, the tank gun was also upgraded, which is naturally a good choice.
Increase the length of the barrel and improve the armor-piercing projectile. Although depleted uranium armor-piercing projectiles are not used, it is completely possible to destroy the target.
If it can't be destroyed, then get closer. After all, the toughness of Eagle Nation's depleted uranium armor is well known all over the world.
Now, everyone is studying this tank carefully. The 79 tank of the Date Country is the most powerful ground weapon in the Date Country. It is equipped by the President’s personal guards. Therefore, it is not hesitate to spend money to upgrade. of.
"What's the mushroom head on this?" Compared with their own tank, you can immediately notice some differences in details. In addition to the longer barrel, there are some additional things on the turret, such as Say, this is something like a black mushroom head.
I know you will mention it! Qin watched this device and introduced it carefully: "This equipment is a secret weapon of our tank. Its full name is called the laser jamming system. Listening to this name, can you guess what it does?"
Qin Guan knew that the air combat trump card of the Date Palm Nation was the famous Reyere, but he was not very clear about some elites in the ground tank unit. The question before him was a tank general from the date palm country, although he knew his Name, job title, no more information about him, or a famous person.
However, this device is of course a new invention of our own. If the other party wants it, we can provide them with a simplified version.
"Laser interference system?" Hearing the name, the other party began to think about it seriously: "In other words, is it acting on the other party's laser rangefinder?"
The laser rangefinder is already one of the most important components in modern fire control systems.
If you want to accurately hit the target, you must have various data. The distance is a key data. Only by knowing the distance accurately and within the error of meters can you hit the target, especially the long distance. The precise shooting is even more essential.
In the past, the method of visual inspection was used. The width of the target was seen on the sight, the model was identified, and then the calculation was performed to obtain the data. Not only the tanks on the ground, but even the aircraft in the sky are also determined like this. With regard to target data, pilots have to memorize the wingspan data of various airplanes, as well as mental arithmetic. It is not easy to hit the target.
However, technology is advancing. Soon, a laser rangefinder appeared. It fired a laser beam to the past and then returned. It calculated the time and multiplied by the speed of light to get the distance. This is quite accurate.
For fighter jets, missiles were launched in this way at the initial stage. Later, fighter jets entered the era of radar. Radars calculated various data. However, for tanks, this method was retained. Use a laser rangefinder to measure the distance, after all, no radar is needed on the tank.
So, if you use this kind of laser ranging and give the other party wrong results, it can interfere with the other party's aiming and prevent the other party from hitting the target. This is the way the laser suppression system works?
"Yes, technology is constantly evolving, and tank troops also need to constantly learn modern scientific and cultural knowledge to be able to keep up with the times." Qin Guan admired the commander: "Your analysis is roughly Right, it took us about five years from the principle to the successful development. Now it can be put into use. It can interfere with the other party’s laser ranging, preventing the other party from obtaining effective and reliable distance data, thus making the other party’s The fire control system fails, so unless it is within 500 meters, the other party cannot accurately attack us."
Within five hundred meters? One thousand meters away, they can kill the opponent. With this weapon, the tank soldiers will have more confidence.