The command of the 23rd missile regiment. The scientific and technological instruments are very advanced, especially the computers, which do not seem to be much worse than the command center in Hanjing.

The main thing is that there is also a satellite signal reception center that can receive signals from incoming spy satellites.

After the speech, Luo Junyuan was giving Wang Yunshan a detailed introduction to the current situation.

"Your Excellency, the three signal points have been confirmed so far, and the positions have not changed since last night. The signal strength also remained stable, which was in line with the mission plan we received. ”

Wang Yunshan nodded and said, "In addition to this matter, what about other preparations?" ”

"Yesterday, our regiment has already carried out various inspections of the six surface-to-ground penetrating missiles it received, and all indices have remained intact." Luo Junyuan replied.

"These six missiles have the only six penetrating warheads that we have, and we only have six such warheads. Therefore, in any case, this mission must not fail, you must be proficient in every detail, and you must know all aspects well. At the same time, it is also necessary to prepare for any unexpected situation, and once there is any accident, it can be quickly resolved. Ensure the smooth completion of the task. ”

Wang Yunshan is very concerned about this mission, which is related to the direction of the Second Artillery in the future, and it is a debut of great significance. He had to hand in a perfect answer, otherwise he wouldn't know how to meet Chen Shao.

For Wang Yunshan, this is the most important test paper in his life, for this test paper. He worked hard for twenty years to get the perfect answer on the test paper.

"Yes! I promise to be careful and careful to prevent any mistakes. Luo Junyuan replied with confidence, it is very important to Wang Yunshan, and it is not the case for him.

As the pioneer of the Second Artillery, and the first battle in his troops, he paid more attention to the details than anyone else. The pressure is also even greater, no less than Wang Yunshan's pressure.

Missiles are highly technological, and like many inventions, the higher the technology, the more complex they are. You need to pay more attention to it. Especially for missiles, which are such a sharp weapon of war. It is another domestic launch, and if it goes wrong, it is likely to cause catastrophic consequences.

No one can guarantee that there will be no problems, some are just careful and careful. Keep surprises to a minimum.

"The thruster is okay to say. Especially penetrating warheads. Be sure to check every screw and every line. We have only tested a ground-penetrating missile once before, and it turned out to be successful. This is the second time we have loaded the penetrating warhead with a missile, and we must ensure success. Wang Yunshan didn't feel that he was verbose. Again.

"Yes!" Luo Junyuan didn't care about Wang Yunshan's verbosity, he understood the pressure on the old chief's shoulders.

Ground-penetrating munitions are ground-attacking munitions that carry ground-penetrating warheads (also known as penetrating warheads) and are used to attack airport runways, ground reinforcement targets and underground facilities.

Ordinary bombs explode as soon as they touch the ground, but ground-penetrating bombs have their own tricks. When it hits the ground, it does not explode immediately, but continues to drill downward, and when it reaches a certain depth, it explodes, thus destroying the target deep underground.

China's current ground-penetrating warheads are only in their infancy, and they are not as powerful as the ground-penetrating missiles of later generations.

In later generations, ordinary ground-penetrating bombs can penetrate hundreds of millimeters of cement, and some ground-penetrating bombs can even drill to a depth of more than 100 meters underground and explode, which is equivalent to dozens of stories high skyscrapers!

Drilling bombs sound mysterious, but they're not that far away. In '99, the "JDAM" bomb that blew up the embassy in the Federal Republic of Yugoslavia was a kind of ground-penetrating bomb. At that time, B-2 bombers fired a total of five "Jedam bombs" at the embassy in Yugoslavia, two of which entered from the top of the embassy office building and ran through five floors from top to bottom, all the way to the bottom and basement before exploding.

The reason why the ground-penetrating bomb can penetrate deep into the ground is because of its strong kinetic energy.

From dynamics, we know that the kinetic energy of an object is particularly affected by velocity. Two objects with a certain mass, as long as they have a large relative velocity, will have a huge destructive force when they collide. If two colliding objects do not have a strong shell to support, they will be deformed and destroyed because they cannot withstand this external force. If one of the objects has a sturdy casing that protects the internal structure of the object from destruction during a collision, then the object will not be damaged and may exert a strong squeezing force on the other object and burrow into the inside of the collided object.

Ground-penetrating bombs use this principle to drill deep underground. The depth of penetration of a ground-penetrating projectile is closely related to factors such as its weight, the shape of its head, the angle and speed at which it hits the target, and so on. The shell of the ground-penetrating bomb is generally made of high-strength materials, and the inner and outer surfaces of the shell are also coated with a heat-proof layer. In this way, when the high-speed ground-penetrating projectile reaches the ground, its shell will not be cracked, and the ground-penetrating projectile will rely on its own huge kinetic energy to continue to drill down in the direction of the sharp warhead.

To use a popular analogy, the principle of burrowing bullets is like driving nails into a wooden plank. When we smash a nail hard, the nail moves downward at a very fast speed. into the planks. However, if the nail head is not sharp, it will be difficult to drive in; If the nail is not made of iron or steel, but is made of wood, it is also difficult to drive into the plank.

Of course, in conjunction with ground-penetrating bombs, delayed fuses are also required. The combination of the two is the real ground-penetrating bomb.

The so-called fuse, simply put, is a device that detonates a warhead. The fuse of the ground-penetrating bomb can ensure that the ground-penetrating bomb is in a safe state at peacetime and does not explode, and when it is drilled to a certain depth underground, it can work according to specific instructions, so as to detonate the warhead in time and produce an explosion.

The fuze of the ground-penetrating bomb can be divided into many kinds, and at present, China uses a time-delay fuze, which is also the most commonly used, and the scientific and technological content is not very high, and the effect is also very good.

After the ordinary bomb hits the target, the fuse contact in the warhead is turned on, which ignites the detonator in less than a millisecond, thereby detonating the explosive. When the ground-penetrating bomb hits the target, because the time-delay fuse works, the detonator does not fire at this time, but after a delay of more than 300 milliseconds, it ignites and then detonates the explosive.

In World War II, Britain used rudimentary ground-penetrating bombs to attack Germany's underground arsenals and submarine bases. It's just that it's more appropriate to call it smashing the ground, which is similar to a goblet, and doesn't really realize the ability to drill into the ground. The United States also developed ground-penetrating bombs in World War II because of Japan's hidden bunkers on the Pacific islands, but it seemed that they were not put into actual combat, and little Japan knelt down.

Ground-penetrating bullets, which China has been studying for many years, are like the development of spears and shields. Fortifications have a deep history with the development of thermal weapons, but initially they were only foxholes, bunkers, tunnels, trenches, etc. In particular, as weapons become more and more advanced and powerful, and the strikes from the air become more and more serious, the underground defense facilities and technology have made great progress.

With the beginning of World War II, it is not difficult to find that it is not uncommon to skillfully use underground defense facilities to protect personnel, preserve materials, and deal with the enemy in war, and then create a record of inferior victory.

Especially in the European theater and in Australia, both the Axis and the Allies built a large number of underground fortifications. It can not only be used for defensive warfare, but also can safely store ammunition.

It was the Allies in Southeast Asia who also built the cities of Boli and Shayawa. The underground fortifications inside were very strong, and they were supposed to deal with the Japanese landing battle, but they did not expect that the enemy facing these two cities was the Chinese army.

For this reason, Chen Shao also decided to use the latest penetrating warhead and missile coordinated strike method to destroy the two defensive fortresses of the Allied forces in Southeast Asia and reduce the casualties of Chinese soldiers.

The reason why the ground-penetrating bomb attracted Chen Shao's attention was that it could meet the military needs of some countries and accomplish tasks that ordinary bombs could not accomplish. The theory of spear and shield has existed in China since ancient times. Now that the enemy has built a strong shield, China needs a sharper spear.

You want to destroy an enemy's underground fortress or warehouse, but you don't want to cause too much damage to ground targets. Since it is difficult to achieve such a demand with ordinary bombs, Chen Shao set his sights on a warhead that can drill into the ground.

After many tests, compared with ordinary bombs of the same power, the ground-penetrating bomb is not only small in size, but also light in weight, and causes very little collateral damage, which can not only destroy the enemy's reinforced underground military targets, such as strong fortifications and underground command posts, but also can be used to attack enemy submarines and other targets hidden under extremely deep ice.

Especially when the ground-penetrating bomb is combined with a missile, the lethality will also become even greater.

Ground-penetrating missiles generally consist of a carrier and an penetrating warhead. The carrier is generally a missile body, an aerial bomb body, a rocket, etc., and its carrying function is to make the penetrating warhead reach sufficient speed at the end stage.

The penetrating warhead is composed of an internal penetrating warhead, a high-explosive charge and a fuse, the penetrating head is generally made of high-strength steel or heavy metal alloy material, and the fragmentation method is adopted, and the fuze is usually a time-delay proximity fuze. The penetrating warhead generally adopts a large aspect ratio, and its diameter is generally not more than 50 centimeters due to the limitation of the carrying capacity of the weapon.

In addition, in order to carry out precision strikes, the bomb is also equipped with a control and guidance mechanism.

Of course, there are many types of ground-penetrating bombs in China, and there are also ground-penetrating bombs that can be fired by land artillery or naval guns, but the effect is not as good as that of airdrops and missiles, so they are not used in large quantities.

In order to knock out Boli and Shayewa and crush the will to fight of the allies in Southeast Asia, Chen Shao took out the most advanced equipment, which was still the kind of equipment that only knew that the effect had not undergone a lot of tests.

With the ground-penetrating missile in the first battle of the Second Artillery, Chen Shao wanted to make this unit shine in the national defense force system. (To be continued.) )