According to the battle records of the "Manta Whale", the time it took to shoot the first peacock and the time for the boat to disappear from the passive sonar of the "Manta Whale" was the point of force and the time to divide the seconds between the boats and the others, which means that the boat reacted in a little more than seven minutes. The active noise jamming system on the "Bat Zor" takes minutes to start without prior preparation, because the responsiveness of the system is mainly determined by the execution efficiency of the software. The execution efficiency of the software is the main performance indicator, so it can be seen that the active noise jamming system of the boat will not be worse than that of the "Bat Zor". Basically at the same level.

If it were not for the torpedoes fired by the "Manta", the two most advanced submarines in the world would have passed by at most.

Because of the heavy anti-submarine torpedo that "will not give up until the goal is reached," it is impossible for the "Bat Zo" and the boat to "laugh and enmity" and score a superior score.

As already described, "Active Noise Control System." The basic principle of operation is very simple. As early as the beginning of the century, Russian scientists proposed to use coherent technology to create noise control systems. In addition, the "voice jamming equipment" that is widely used in the intelligence community uses the same principle, except that it interferes not with all voices, but only with the voice of people.

So, what makes the "active noise control system." It didn't come out until the era of the Century Blade?

In practicality. There are two main problems, one is computer performance. The second is to interfere with energy sources. Without powerful computing, it is impossible to process the collected sound signals in a timely manner, and it is impossible to interfere with the sound signals. "Noise control" itself is to convert the energy of sound waves into internal energy, according to the principle of coherence, the energy output of the interference source must be exactly the same as that of the interference object, because there is a lot of noise in nature, so the power of the interference source is very amazing. It was not until the large-scale application of neural network computers and controllable fusion reactors that the two major problems of "active noise control systems" were solved. It is precisely because of this that the "active noise control system" appeared on the submarine designed at the beginning of the Century 3 pie generation.

As can be seen from this, the "active noise control system" has a big flaw.

That is. If the intensity of the outside noise is too high, the system will be overloaded. Or even malfunctioning.

In "Manta Whales. This problem was very prominent. Because the output power of active attack sonar is often measured in kilowatts, the intensity is very amazing. Therefore, the "active noise control system" cannot deal with the high-intensity infrasonic waves generated by the active attack.

According to the experience summed up by the "Bats" during the tests, it is necessary to avoid entering the active sonar coverage directly in front of the enemy ship as much as possible, and if it cannot be avoided, either add escape or turn off the "Sharp Noise Control System", and absolutely do not activate the "Active Noise Control System" when the enemy boat is using the active sonar.

The question is. Submarines encounter strong noise sources in combat not only active attack sonar.

Don't say anything else. When a torpedo explodes at close range, it not only has to produce an extremely violent shock wave, but the sea water is incompressible. The efficiency of transmitting the energy of the explosion is far greater than that of air, and it also produces high-intensity sound waves of various frequencies. In "Bat Trio. It has long been proven in the tests conducted by the Torpedo that the explosion of the torpedo is "slow down the active noise control". The impact is much higher than that of an attack sonar, and if the explosion is too close, it is even possible to burn the entire catty, system.

No doubt. In the face of high-intensity sound waves from torpedo explosions, the "active noise control system" had nothing to do.

Of course, this also broadened the horizons of the Navy.

Although at the end of the year, there was enough reason to believe that the United States was far inferior to the Republic in research in related fields, but the Republic Navy took precautions, considering that the United States also has the ability to develop an "active noise control system". The "Active Noise Control System" was added to the sea trial project. detection technology.

This is because the "Active Noise Control System" is capable of interfering with sound waves in all frequency bands, as long as the output power can be increased. It is even capable of dealing with active attack sonar, so any passive detection equipment will not come in handy. No, the engineers of the republic had the strength to not admit defeat, and after coming up with several proposals. Several young scientists have used the principle of scattering sound waves in a medium. The use of the "blasting detection method" was proposed. "The principle is very simple, it is a method of using the explosion as a sound source, and determining the target orientation by analyzing the transmission, reflection, refraction and other phenomena of the sound waves generated by the explosion in the seawater.

Of course, according to the general principle of engineering, the simpler the principle, the more difficult it is to implement. Because the sound waves generated by explosions are irregular, and the propagation of sound waves in seawater will be affected by factors such as temperature, salinity, and ocean currents, the prerequisite for the practical application of the "blast detection method" is still a high-performance computer.

The mother is undoubted. The computer on board the "Bat Han" is considered first-class among all submarines.

Enter four, a pound of "bats". The main test lesson is to verify the effectiveness of the "blast detection method", because it is an effective means to achieve "passive detection". With "passive radar. Gradually popularized, in the foreseeable future, the Navy's underwater detection technology will also enter the "passive era." "Although in the long run, the use of various natural sound waves is the basis for passive detection, in the initial stage, there must be some tricks to lower the technical barrier. Because the source of the sound wave needed to detect the target is placed outside the submarine, the "blast detection method" is such a trick.

When it went to the Indian Ocean to participate in joint exercises, the "Bat Zor" tested the "blasting detection method."

It's easy to say. The passive sonar on the submarine is used to receive the noise from the outside world, and then the noise is comprehensively analyzed by the central fire control computer, and finally the surrounding underwater situation map is drawn, and then compared with the previously collected situation map

The test results weren't very good, and they weren't very bad.

At least one thing is certain. That is, the "explosion detection method" is operable, and what is missing is a more sensitive passive sonar and a more powerful central computer.

It can be seen from this that when the eight torpedoes were looking for targets in the sea, it seemed that the "Manchai" and the boat were in a very bad situation.

Breaking the "Atlanta" class to escape as quickly as possible, 4 intestinal millimeter heavy torpedoes have been added to the Naijie, and the previous Licking Ma millimeter heavy torpedoes that sailed in the Nai Jiedu also turned to the proud "Atlanta" after losing the target. class attack submarines.

A few minutes later, after the Tian mm heavy anti-submarine torpedo used to deal with the submarine did not find the target, it activated the autonomous homing system and aimed the spearhead at the "Atlanta"-class attack submarine. In other words, moving the submarine and 8 torpedoes are all sprinting, and the noise is very loud, which has made the active noise control system of the "Manta Whale" a little unbearable.

After the order was given to cut the torpedo wire. Xiao Jingbo made the "Bat Zuo" go deep to the blade of the beater.

In cases where the noise source is extremely complex. Deep diving is not the best way to avoid it, especially in shallow waters and unclear seabed topography. The reason is simple, the seabed will reflect sound waves, and depending on the specific conditions of the seabed topography, a complex acoustic wave convergence zone is formed, in an enhanced convergence zone. The intensity of the sound wave can be increased by up to a number of times. For the "Manta Whale", which needs to avoid high-intensity noise sources, it has to avoid entering the sound wave convergence area, which means that it has to avoid getting too close to the bottom of the sea. Because the active noise control system itself has the ability to test the intensity of sound waves, the course of the submarine can be determined based on the measured results.

The problem is, in just the net, to start.

Xiao Jingbo knew very well in his heart that it was impossible for Yu Torpedo to keep chasing, and sooner or later it would hit the United States

Boat.

It's just that Xiao Jingbo didn't feel worried.

When the torpedo exploded, the "Manta Whale" had to turn off the active noise control system. Similarly, the boat either actively shuts down the system or overloads the system. What's more, there is an incomplete "explosion detection system" on the "Bat Storm", which can determine the approximate position of the boat based on the reflected explosion sound. As for whether the boat has the same detection ability, Xiao Jingbo does not know. Only one thing is certain, the boat will not be better than the "manta whale." How much better.

For the next few minutes, Xiao Jingbo had been calculating the time when the torpedo hit was moved to the Atlanta tip.

The knife point is Hongfen, before the torpedo hits, it is in the "bat tower." The Atlanta-class attack submarine in front of the left of the ship was about a few minutes ahead. Xiao Jingbo ordered the reverse propulsion reduction, and when the degree of the "Bat Zor" was reduced to about 8 knots, he gave the order to turn off the active noise control system.

Eight heavy anti-submarine torpedoes exploded one after another. It's like dropping 8 flares in the sea.

While moving the "Atlanta"-class attack submarines were torpedoed to pieces one after another, the "Manta Whale" also found two suspicious targets with the help of the "explosion detection system."

I have to say, "Bat trivia." The situation is really bad.

If it is in the northern Indian Ocean or the western Pacific Ocean, Xiao Jingbo is more than eighty percent sure that he has not yet gone far. However, in the unfamiliar South Atlantic, there is no accurate seabed topography data in the database of the "Manta", so it is impossible to compare and analyze the data collected after the explosion.

Two suspicious targets appeared, which surprised Xiao Jingbo.

There is no doubt that there are only two possibilities, one is that in addition to the boat, there is an American submarine nearby, and the other is that the boat preemptively appeared "manta whales." and fired a torpedo at the "Manchai".

Because of the "explosion detection method." It is not continuous, and in order to obtain the navigation data of suspicious targets, it is only possible to compare and analyze the data obtained several times before and after. The fire control computer has been calculating the information intercepted by the passive sonar, and there is no extra computing power, so it is impossible to give the specific situation of the two suspicious targets in time, and it is impossible to determine whether it is a submarine with a slower degree or a high torpedo.

Computers don't work, everything depends on the captain's brain.

In the midst of the lightning, Xiao Jingbo made a decision to save the officers and men of the boat: activate the active noise control system and dive.

What's more, the active noise control system on board the "Bat" is ready to be activated at any time.

The "Manchai" was added to the dive not long ago. A torpedo fired by an American submarine exploded on the original line of the sailor, only a few hundred meters away. If Xiao Jingbo hadn't given the order to dive all the way quickly and decisively, that is, he hadn't changed the "bat." The course of the ship, even if it would not be directly hit by a torpedo, would have been hit hard.

In fact, even if it's a dive. Avoiding the torpedo, the "Bathan" was also hit.

Because the explosion was too close, the active noise control system on board the "Manhaul" was seriously overloaded. Xiao Jingbo had to reduce the submarine's degree to less than 4 knots, and then turn off the active noise control system.

It can be said that this sudden attack woke up all the officers and soldiers, including Xiao Jingbo.

Up to now, the officers and men of the "Batzo" have considered themselves to serve on the most advanced submarines, and among the submarines in active service, none of them are "Batzo." No. of the opponent. The torpedo that exploded hundreds of meters away was a resounding slap in the face. Tell the officers and men of the "Manta Whale" that the "Manta Whale" is indeed very advanced, but it is not unique. It is not incomparable either, at least one submarine has considerable strength.

Xiao Jingbo was still calm because he had to be calm.

It didn't take much effort for Xiao Jingbo to think that the torpedo fired by the boat proved that the boat not only had the initiative to advertise in the mouth, but also had a cautious mouth. Otherwise, it would be impossible to appear the "Manta Whale" in a noisy environment and determine the "Manta Whale" track. Although judging by the point of the torpedo explosion. The boat's detection system was not accurate enough, and it deviated by several hundred meters when calculating the course of the "Manta Whale", and the boat did not have the "Manta Whale" that was following before this. It has proven that its passive detection system is not very reliable. It could not work continuously, but what could be proved was enough to convince Xiao Jingbo that the performance of the boat was not under the "Bats", and in some respects even surpassed the "Bats".

After a little consideration, Xiao Jingbo had reason to believe that the torpedo was not aimed at the "bat." No.

Leaving aside for the time being whether the U.S. submarine will waste expensive torpedoes, the boat is obviously the most advanced submarine in the United States. And it is a submarine that is in the testing stage, and the US Navy will send it to the South Atlantic to deal with the submarines of the Navy of the Republic, and it will certainly be equipped with a sufficiently good submarine, just like the Navy of the Republic. Change positions and let Xiao Jingbo command the boat, before there is no way to ensure that the opponent is killed. He definitely doesn't shoot torpedoes blindly. Obviously, the torpedo had a different plan, and all Xiao Jingbo could think of was that the boat's passive detection system was the same as that of the "Manta Whale", which needed to rely on the sound waves generated by the explosion to detect potential submarines.

To know. The first few explosions were far from the "Manta Whale", and the effect was not very obvious. In order to turn the tide, the captain of the boat will definitely use the intercepted torpedo information to calculate the torpedo firing point, and then judge the "manta whale." After firing a torpedo it is possible to take an evasive course and then shoot a torpedo. I have to admit that the American captain was very lucky, or Xiao Jingbo's tactics were too conservative.

In any case, the "Manta Whale" was very unlucky.

After about a minute, Xiao Jingbo breathed a sigh of relief.

At this time, the officers and men of the "Manta Whale" were still very nervous, and no one relaxed like Xiao Jingbo.

In fact. The most dangerous old minutes have passed.

Xiao Jingbo had reason to believe that the boat's active noise control system had also been seriously overloaded due to frequent explosions and had stopped working. More importantly, the boat certainly did not occupy the most advantageous position, otherwise it would not have remained silent.

Other words. The two sides returned to a state of parity.

Looking at it from another angle, there is reason to believe that the "Bat Lock" is in a favorable position.

Anyway. The "Bat Lock" is a mature submarine that not only has independent combat capability, but also has the combat capability to go as far as the South Atlantic, and judging from the performance of the boat, its state is similar to that of the "Bat Zou" a few years ago, and it does not have perfect combat capability.

Here's the key.

As long as the submarine does not have perfect combat capability, it will certainly not be able to wait patiently for a few days, or even several days, like a real submarine, and wait for the opponent to make a mistake. Then take out the opponent in one fell swoop. No doubt. The "Bat Zor" has this catty. Capital, the fresh vegetables and fruits stored in the fresh-keeping freezer are enough for the officers and men of the whole ship to consume the days, before that. Don't think about the surface.

Xiao Jingbo has reason to believe that it is impossible for the boat to stay under the surface of the sea any longer.

He also had reason to believe that the captain of the boat must have understood this.

Other words. After a missed counterattack, the captain of the boat will choose to retreat. According to Xiao Jingbo's estimate, the boat will not retreat directly to the southwest, but will choose to approach the Falklands, rendezvous with other American and British submarines in that direction, and then turn north to return to the US mainland or US military bases, so when resetting the route of the "Manta Whale", Xiao Jingbo chose the "safest" southwest route.

When sailing at 4 knots, "manta whales. The noise of the trumpet is less than a decibel level, which is very peaceful.

For the next few hours, Xiao Jingbo stayed at the command center, while the manta whale's electronic officers were busy repairing the damaged active noise control system.

The more time passes, the safer the "Bathan" becomes.

Because the possibility of two submarines that escaped separately choosing the same route and the same voyage is almost non-existent, as long as you have a little patience, you can spend more than ten hours and distance yourself from the enemy boats. number will be safe.

Merely. Including Xiao Jingbo, many officers and men of the "Bat Zuo" did not expect that Daqi would be so bad.

After sailing for an old hour, that is, at about 7 o'clock in the morning of the battlefield time, Xiao Jingbo let the "Manta Bao" rise to a depth of Wumi from the sea. The communication mast was stretched out of the water, and the laser directional communication instrument was used to engage the American submarine and sink 2 "Atlanta." class attack submarines, as well as the news of the encounter boats.

Xiao Jingbo did not choose to use communication buoys, first, because shooting communication buoys would produce noise, and second, the information capacity of communication buoys was very limited. After encountering an opponent of equal strength just now, Xiao Jingbo was more cautious and didn't want to make a little noise.

It can only be said. The fate of the "Bat Jing" should not be extinguished.

If it weren't for the fact that the bandwidth of the laser-directed communication equipment was very large, and the efficiency of transmitting information was very high, it only took less than a second to get out the information that it would take a minute to complete with a high-frequency antenna, otherwise, the "Bat Zor" would have been hit by a torpedo that suddenly attacked before it could finish reporting the situation.

It was precisely in this way that when the submarine command relayed the information it had just received to Pei Chengyi, the "Bat Zuo" was diving to the maximum extent to avoid the heavy anti-submarine torpedo that suddenly appeared.