Great warships

The interception of ballistic missiles requires a huge amount of calculations, predicting the trajectory and impact point based on the trajectory of the target, and calculating the best interception point based on one's own position and the range of the interceptor missile. After all these calculations are completed, Determine the right time, launch the missile, and intercept!

The last time a satellite in space was shot down, the trajectory was known in advance, so the interception could be carried out calmly. But now, everything is unknown. The real simulated actual combat situation is more urgent and tests the performance of the system.

Yes, the main thing is to test the system. People can't play a big role at this time. All calculations are systematic. People are only responsible for selecting the best one from several suitable trajectories and then launching the missile.

"Red Flag-19 power-on self-test!"

"Open the launch cover!"

Orders were issued quickly, and the atmosphere on the entire bridge was tense and calm.

Qin Tao stood on the bridge and looked at the launch device in front of the bridge. This time it was launched from the front, so the launch scene could be seen from the bridge. However, the cold launch was not as spectacular as the hot launch.

Small missiles are suitable for thermal launch. For example, the Hongqi-16 can dive directly to attack the target after coming out of the launch tube. However, large missiles are generally cold-launched. Large missiles such as the YJ-18 are thermally launched. There are only a few, and other large missiles, such as Changjian-10 and Haihongqi-, are all cold-launched.

"The interception trajectory has been calculated, and there are three options!" At this time, another report came.

Three plans have been hung up on the big screen on the wall. Among them, the best plan is red, and the other two are green. The three plans give three different interception points. As for which one is the best... It is better to trust your own judgment than to trust the computer program.

"Choose the first interception option!"

"The first interception plan! The interception data has been entered into the missile!"

"There are still ten seconds until launch, countdown starts now!"

"Three, two, one, launch!"

The missile launcher was enjoying himself again. As his finger pressed the button, there was a loud bang at the front of the ship's bow, and the missile flew out of the launch tube, and at the same time some gas rushed out.

"When you see this gas, you know it is our secondary piston ejection device." Qin Tao said.

Although they are all cold launches, cold launches are also particular.

For details, please refer to the heartless cannon. In many movies, the shooter only needs to stuff the explosive package into the oil barrel, then light it, and the explosive package will fly out with a bang.

Why did the explosive pack fly out? Relying on the director to generate Qigong?

The real heartless cannon has a two-layer structure. First, a propellant pack is inserted, and a disc wooden baffle as big as the cut surface of the oil drum is placed in the middle. An explosive pack is placed on top, and the lead of the explosive pack must be inserted into it. Go below.

In this way, the propellant package below is ignited, and the propellant package generates gas and pushes the baffle, so that the baffle can push the explosive package in front to fly out. At the same time, the fuse of the explosive package is also ignited, and then it flies through a line in the air. Arc, falling on the enemy's head, and exploded with a bang.

Putting the heartless cannon upright is similar to this cold-firing launcher.

The missile can fly out, of course, because it is squatting on the baffle. Below the baffle is a gas generator. When you need to launch the missile, start the gas generator to generate gas, push the baffle upward, and the baffle pushes the missile. , push the missile out of the launch tube and fly into the sky.

However, traditional cold launch devices still have many problems. The baffle does not always push the missile to accelerate. As it moves upward, the pressure of the gas becomes lower and lower, and the acceleration of the baffle also begins to decrease. When the baffle reaches about half the length of the launch tube, it can no longer push the missile. The forward function is here, where the baffle will hit the buffer and separate from the missile.

As the launch device lengthens, this defect will become more and more obvious. Specifically, it's similar to the problem faced by steam catapults.

Can that increase the energy of the gas generator?

This energy can be increased, but if the energy is increased, the thrust at the moment of ignition will be too large, which will increase the overload of the missile and affect launch safety.

So, how to solve this problem?

In order to make the nine-meter-long launch tube work normally, relevant technical personnel developed a two-stage ejection method, which perfectly solved this problem.

If the air pressure is too small, it will become weak in the second half. If the air pressure is too high, it will be unbearable when starting. Therefore, we simply changed it to a two-stage cylinder. The piston areas of the two-stage cylinders are different!

When it is just working, the pressure of the gas is very high. It enters the first-stage piston cylinder mechanism first. The area of ​​this first stage is small, so the pressure generated is not very large. It can push the missile to rise smoothly. It waits until about one-third of the time. At about a height, as the volume of the air chamber of the first-stage cylinder becomes larger and larger, the pressure becomes lower and lower. At this time, the high-pressure gas enters the second-stage piston cylinder mechanism through the air inlet on the cylinder. This The piston area of ​​the second stage is larger, so even if the air pressure has been reduced, the thrust is still large enough.

To put it simply, it is the basic formula, F=P*S. The pressure is equal to the pressure multiplied by the area of ​​action. At first, when the pressure is high, use a small area. Later, when the pressure is low, use a large area. In this way, during the entire cold launch process, the launch The device can push the missile to continue to rise, so that it rises to the top, and the entire process is doing work.

For this kind of large missile, the thrust force is not enough, and it really can't be fired. The nine-meter-long launch tube is unique to Dongfang and the only one in the world. Only Dongfang can solve this kind of launch tube technology.

At the same time, there are other changes to the ejection device of the secondary cylinder, such as the way the gas is discharged. Originally, it only opened a hole at the tail of the ejection cylinder. When the piston reaches the corresponding position, the gas starts to be released. Now it is changed to the piston being completely flushed out. After the top of the cylinder, it is released from the gap between the piston and the cylinder, so the efficiency of work is greatly improved.

This also means that you can determine what kind of launch device it is by looking at the gas overflow during launch. However, only an expert can know this.

As the double-stage cylinder ejected, the huge Hongqi-19 missile left the launch tube and continued to rise toward the sky. Li Pingfan looked at the missile with bright eyes, preparing to issue the next order.

Cold launch, what if the missile ejects but does not ignite?

In the past, the briquette launcher was tilted outward, so that if it failed to ignite, it could fall directly into the sea water, but the current launcher does not work. The chocolate launcher is vertical and cannot be tilted, otherwise it will hit it below. .

If there is no ignition, then quickly turn to the left full rudder! Missiles are dead, people are alive. This is also the reason for choosing to use the front transmitter, so you can see clearly.

However, this kind of thing did not happen. After the missile jumped upward, a flame appeared at the tail, and then accelerated upward!

Successful launch!

The guys didn't shout excitedly. After all, unlike the YJ-18 launched last time, this time it was an attack. It not only had to be launched, but it also had to hit the target!

A new bright spot appeared on the big screen, climbing upwards, and the bright spot of the target was also flying towards it. At this moment, Qin Tao had the illusion that he was not in a warship, but in a satellite launch center.

The Satellite Launch Center in Qiongzhou also has such a scene, except that the screen is bigger and the space is larger, but now, even if the space is smaller, the feeling is the same.

We who build warships also want to engage in aerospace?

This illusion only lasted for a few seconds before Qin Tao heard the report.

"The first stage of the rocket fell off, reaching a speed of 1,500 meters per second!"

"The second stage rocket ignites and the speed increases further!"

Is this really a good idea to launch a rocket? Only rockets have first and second levels!

If a missile wants to reach a high enough speed, it must find ways to reduce its own weight. In this, there is a very important basic law. The easiest way to reduce its own weight is to throw away the useless shell. This is modern The basic idea of ​​​​air defense missiles.

Take Hongqi-9 as an example. It only has a single-stage rocket, which will fall off completely after burning out. The shutdown speed is only meters per second. As for Hongqi-B, it uses a two-stage design, and the outer shell is changed from steel to fiberglass composite material. The shutdown speed was increased to three thousand meters per second, so the combat distance increased several times.

However, this speed is still not enough for anti-missile missions. Therefore, from Red Flag 9 to Red Flag 19, many advanced technologies have been used, such as more powerful solid propellants, carbon fiber composite materials for the casing, etc. , such a two-stage rocket engine can push the missile to a higher speed. Moreover, the fragmentation warhead was originally used. In order to obtain the largest killing radius, the weight of the warhead was as high as hundreds of kilograms. However, after using the kinetic energy warhead, no explosives are needed, and the weight is reduced to dozens of kilograms, so that the range is natural Just further.

"The second stage rocket is shut down, speed is four thousand meters per second!"

"The kinetic energy warhead and projectile are separated!"

"The kinetic energy warhead is flying according to the predetermined orbit!"

On the screen, the two bright lines were getting closer and closer, and everyone held their breath.

The bright line on the screen seems to be still following its original trajectory. In fact, in the floating frame on the 19th highlight of the Red Flag, many numbers are beating rapidly, which means that this kinetic energy warhead is constantly adjusting its attitude. Prepare for the final precise collision.

At that time, someone proudly claimed to have shot down a fly in space. In fact, it was just using a nuclear bomb to destroy a nuclear bomb, which was a lose-lose behavior. But now, using a kinetic warhead for precise impact is the real hit in space. mosquitoes!

The airspace they are flying in is outer space, and they are rapidly approaching, approaching.

Suddenly, other electromagnetic waves also hit this side, and then more electromagnetic waves began to gather!

There's a new audience!

However, the kinetic energy warhead did not panic because of the bystanders. It was still flying correctly according to the trajectory it had set before. It continued to adjust its posture, and finally met the thing flying from the opposite direction, and then slammed into it. !

There is no air in space, so the sound of impact cannot be transmitted, and there is no scattering of light in space. Therefore, the light caused by the collision only lasts for a moment, as if nothing happened in space, it is still quiet, and only some debris flies into the atmosphere. Then it turns into a shooting star.

"Success!"

"Success!"

On board 055, everyone shouted excitedly.

"Turn on the satellite communication system immediately, we want to report the good news to the capital!" Li Pingfan said excitedly.

As soon as the satellite communication was turned on, Wu Shengli's voice came from inside: "On behalf of the leaders of the capital, I would like to congratulate you on your success!"

and many more!

How did the leaders of the capital know?

Qin Tao was very curious. After Li Pingfan finished answering and ended the call, he finally had time to ask: "Captain Li, did you know in advance?"

"Yes, this is equivalent to an examination for us. Of course, we must have an invigilator."

"Proctor?"

"Mr. Qin, you don't know that we have a long-range warning radar somewhere in the south, right? That radar can completely monitor the entire eastern and southern coasts. The entire process of our experiment is being monitored. .”

A long-range warning radar established on the ground? At this moment, Qin Tao thought of the Pavement Claw. Could it be the same as that big guy?

"In fact, as early as the 7010s and s, we built the long-range early warning radar, which occupied a hillside and adopted a phased array system." Li Pingfan said: "Later, due to backward technology, the entire long-range radar base was Abandoned. In the past year or two, in order to better detect space, we have built new ground-based large-scale phased array radar stations in several locations in China. They use our mature active phased array system with high performance. Much higher than before.”

Qin Tao opened his eyes wide. He really didn't know that such a thing happened?

"As for the one in the south, it is 30 meters wide and 24 meters high. It is built on a building and uses X-band. It is said that tens of thousands of T/R components are used. But strangely enough, other places use P Band, this is the only one, using X-band.”

Different radars have different bands. Although P-band cannot see things clearly at long distances, it attenuates little in the air, so it is most suitable for long-range warning radars. However, one of them switched to X-band. Why is this? ?

Qin Tao smiled. It seems that there are some people like him who can predict the future. In other words, in order to avoid future troubles, we will use the same waveband first. Later, if they want to build Pavement Claws, we will also have them. The band is the same, and the power is stronger, making their radar completely useless.

These long-range early warning radars were all built after the Hongqi-19 matured. After all, no matter how powerful the radar of the Hongqi-19 is, it cannot have a detection range of several thousand kilometers. This kind of detection can only be achieved by advanced large-scale Phased array radar to achieve!

This kind of radar cannot move and can only be fixed on the side walls of buildings or hillsides. However, they have a huge search range and can provide long-range early warning information to make up for the shortcomings of the air defense missile system itself.

Superiors attach great importance to anti-missile missiles.

"It seems that today's mission is over. Is it time to go back?" Qin Tao said.

"Mr. Qin, there are new test projects coming next."

"What project?"

"Ship-borne unmanned helicopter takes off and lands autonomously."

Unmanned helicopter? Qin Tao frowned. It seems that our Mingzhou Group has never developed carrier-based unmanned helicopters. What we have developed are fixed-wing unmanned aerial vehicles that take off and land on aircraft carriers. However, it is impossible for us to put all the equipment together. Everything has been researched, so we have to leave some meat for other brother units.

"The relevant departments developed it for us, code-named WZ-6. This UAV is 9.56 meters long, has a maximum take-off weight of 1.6 tons, has a flight life of 8 hours, and can carry a 25 kilogram mission load."

25kg! What is the use of such a small helicopter? It can only be used for battlefield reconnaissance.

"Our key test is the high-precision navigation system. This kind of drone must have full autonomous take-off and landing capabilities. It has been tested during the day and is now being tested at night." Li Pingfan said: "The helicopter is in the hangar behind. , Mr. Qin, do you want to go and see it together?"

"Of course." Qin Tao became interested.

Walking backward from inside the warship, passing through the missile launcher at the back, you arrive at the hangar area at the rear.

055 is a -ton engine, and the helicopter hangar behind it is of course also very large. At this time, two helicopters can be seen inside.

One is huge and the other is small. The appearance of the two planes has a sharp contrast, just like a giant and a dwarf.

This large helicopter is of course Z-18.

Although the Z-20 has come out and will become the main helicopter of the Navy, this helicopter is only ten-ton class. It is mainly equipped with 052 and 055. The deck is wider. The length of the landing platform at the tail is 25 meters, and the width is even more. It exceeds 20 meters, so it can completely take off and land larger helicopters. When designed, it can carry the Z-18.

Compared with the Z-20, the Z-18 has a maximum take-off weight of 13.8 tons and can carry a load of five tons. This capability is incomparable to the Z-20. However, due to its huge size, in the past, only aircraft carriers and amphibious Only ships can carry it, destroyers don't have this chance.

Now, 055 has the opportunity to carry this large helicopter!

Qin Tao looked at the tail of the helicopter and saw a retracted flat panel there, which also meant that it was an early warning type.

"Our 055 will serve as the core force of the formation in the future. When sailing in high-risk areas, it can take off early warning helicopters to provide the most important low-altitude blind-covering capability." Li Pingfan said: "The navy's air defense capabilities will be further improved. At the same time, if necessary, it can also carry the anti-submarine Z-18, and only one can undertake the important anti-submarine mission."

There are two hangars, how do you usually carry them? An early warning type and an anti-submarine type are the most suitable!

The early warning helicopter specially developed for the 001 aircraft carrier will not be wasted and will protect the core formation of 055 in the future!

The helicopter on the other side is too small in comparison!