Changkong Fighter

Chapter 116 Whale Falling
Gurgle. The propeller at the tail of the electric mine quickly stirred the sea water, and it continued to move towards the preset element area at a speed of 40 knots. The thermal mine was even more violent. The propeller stirred the sea water frantically, and the internal gyroscope ensured that the two torpedoes always moved in a straight line in the water, getting closer and closer to the target.

Tick-tick-tick. The captain looked at the timer in his hand. Two minutes had passed since the torpedo was launched. The electric mine would hit the target in 2 minutes, and the thermal mine would hit the target in just 13 seconds!
It would be fine if the noise of the electric motor was very small, but the revolver is a hot-tempered one and will produce a lot of noise at a speed of 50 knots. After all, the opponent is a modern nuclear submarine, it is impossible for it not to react!

However, even if there is a reaction, it is useless. Although submarines, like fighter planes, move in fluids, compared with the air with very little resistance and light fighter planes, submarines, especially big black fish, with a displacement of several thousand tons, need a lot of time to perform tactical maneuvers in the deep sea.

"Hasn't the other party changed course yet?"

The captain looked at the stopwatch. At this distance, the thermal mine would definitely be picked up by the passive sonar! If the big black fish on the other side didn't react, he didn't know whether to feel sad for the crew above or laugh at the submarine's equipment.

"Report to the captain, the target remains on the original course. Wait."

At a distance of 18000 meters between the two sides, the speed of sound propagation in seawater is 1500/S. Even if the gradient layer will affect the speed of sound, it is still roughly the same. In other words, the sonar operator hears the sound from 12 seconds ago, and there is a delay of more than ten seconds between the two sides!
Everyone held their breath when they heard the sonar operator's words. The sonar officer listened for a moment, and suddenly his pupils shrank. He would never forget this voice, a voice that all sonar operators would never forget: "Captain, the target torpedo tube is flooded! Decoy bombs are being launched!"

The sonar operator listened again and reported: "Suppression type 1! Decoy type 1!"

The submarine in front fired decoy bombs backwards. The suppression decoy released strong noise to interfere with the guidance device of the incoming torpedo and attempted to blind the phased array acoustic guidance device; while the other decoy decoy used its own acoustic characteristics to generate a response signal in an attempt to deceive the torpedo's acoustic guidance device.

"Yes! Switch hands!"

"Yes! Switch hands!"

Both the noise and the simulated reply signal were trying to mislead the two approaching torpedoes. However, the wire-guided torpedoes would not be attracted by the sound pattern bait. The fire control officer switched to manual control, and the torpedo entered inertial navigation, waiting to pass through the bait's effective area.

At this moment, the captain looked at the sonar operator and asked in a serious tone: "The other party, didn't they make an emergency ascent?"

"Report to the captain, no!"

The captain's eyes grew stern. Why did he launch a wire-guided torpedo as soon as he came up, instead of following behind and silently destroying the opponent's wake homing torpedo at a low and silent speed? It was just to give the opponent a chance to survive.

If the other party surfaces urgently, the wire-guided torpedo can self-destruct at any time, and then the 054B will come over to send this unwelcome guest away, and everyone can still save face. This is the bodhisattva heart of the University of Tokyo.

However, now the enemy not only refuses to surrender, but also dares to inject water into the torpedo tubes. Let it taste what thunderous means are!

"The enemy launched an air curtain bomb!"

The sonar operator reported the enemy's response, and the fire controller who was also a first-term sergeant sneered, thinking that launching air curtain bombs would be useful?
The torpedo was controlled to make small maneuvers in the water to avoid the area of ​​the air curtain bomb. The thermal mine was pointed directly at the enemy, like a sharp sword drawn from its sheath, with the blade against the enemy's throat.

"Yes! Attack and defense team! The enemy torpedoes are coming!" The captain said as if he had expected it.

At this moment, no one dared to speak. The crew members in the submarine even spoke in low voices, fearing that their words would affect the sonar operator's report: "Report to the captain! Torpedo in the water! Count 2!"

The captain looked at the stopwatch in his hand and saw that there were still 120 seconds before the torpedo entered the acoustic homing range.

"Yes! Trim the bow 15 degrees, dive urgently, set depth 300 meters, launch decoy bombs, and start distance 6000 meters!" The captain said coldly. The purpose of the wire-guided torpedoes or dual-plane acoustic homing torpedoes launched by the other party was to force the Changzheng 18 to change its course in order to avoid the torpedo, thereby cutting off the torpedo wire and making the torpedo lose its target, but it was too late.

"Yes! Launch the decoy torpedoes!"

Gulu! Gulu!
The two torpedoes in tubes 3 and 4 were fired in sequence. Two decoy torpedoes approached the incoming torpedo, one of which continuously made noises as it approached, luring the incoming torpedo. Compared to the stable input parameters of the Long March 18, the enemy's hastily launched torpedoes were unable to accurately locate the Long March 18. Since the invention of sonar, the ability to accurately detect the position of underwater targets has not improved much. However, with the power of computers, the number of targets that sonar systems can detect and process, as well as the data processing time, has increased.

However, wire-guided torpedoes can correct their course while being launched, so we must be on guard.

"Report to the captain, one of the enemy's torpedoes is accelerating, 50 knots, 60 knots, 70 knots!" The sonar operator reported the speed of the enemy torpedo.

"70 knots? It's a swordfish!" said the political commissar on the side with a frown.

He knew that this type of torpedo was a thermal-powered torpedo with a maximum speed of 70.5 knots and a low-speed range of 40 kilometers. It was considered a relatively advanced torpedo.

The captain did not speak, but continued to stare at the pocket watch in his hand. Time passed second by second, and the two decoy torpedoes launched by the Long March 18 approached the torpedoes launched by the enemy submarine. When they reached the predetermined distance, they began to emit noise with a buzzing sound, interfering with and guiding the two incoming torpedoes.

The acoustic homing head of one of the torpedoes was immediately interfered with, and it turned and moved towards the bait torpedo. When it entered the detonation distance, the warhead detonated with a bang. The huge noise instantly resounded throughout the seabed, and all the acoustic monitoring equipment was blinded. Only the wire-guided torpedo was not interfered with. However, the other wire-guided torpedo seemed to have its wires broken by the explosion, and it lost control and drilled towards the seabed.

The sonar operator's ears were instantly disturbed by the noise in the sea water, and he hurriedly took off his headphones. At this time, the captain looked at the stopwatch in his hand, waiting for the sound of the explosion to disappear.

【3】

【2】

【1】

"Report to the captain, the thermal lightning wire is cut!"

The tail wire of the thermal mine was cut off, the torpedo homing head was activated, and the active sonar resounded on the seabed. The opponent seemed to have sensed the approach of death and frantically fired air curtain bombs and various baits, successfully deceiving the homing head of the thermal mine. However, just when the opponent was glad that he was alive, another electric mine with a cut wire approached the submarine silently!
boom!
The warhead with a yield of several hundred kilograms was activated, and the sea water churned violently under this violent force, as if it was being stirred by an invisible giant hand, and countless bubbles surged up frantically.

In an instant, the surging energy swept everything around it, creating a chaotic and shocking underwater explosion scene.

Due to the incompressible nature of liquids (macroscopically), the hull of the Black Fish was squeezed by water pressure. After the seawater destroyed the hull, the water pressure would quickly rush into the cabin. It was difficult for the submarine to take effective damage control measures in a short period of time. The seawater continued to pour in, and eventually the Black Fish lost its buoyancy and sank to the bottom of the sea.

The sonar operator heard the hull crack and the water entering the boat sounded a bit harsh. He turned his head and looked at the captain: "Report to the captain, the enemy's hull is broken and it is rapidly sinking."

Crunch!

Crunch!

After a nuclear submarine exceeds its maximum diving depth, it is as if being squeezed by an invisible giant hand. The hull deforms elastically and eventually reaches its limit, sinking continuously and producing a creaking sound that makes one's back numb. The heavy oil inside and some objects with a density less than water float toward the surface of the sea along the broken hull, while the big black fish disappears deep into the seabed like a whale falling, constantly emitting bubbles.

"Report to the captain, the target is silent."

"Yes! Ascend to periscope depth and send a message!"

(End of this chapter)