"Can you skip this step?" Academician Wang stared at the torpedo position on the screen in front of him, but he was still at his wits' end.
The Taishan does not have active sonar, nor does it have any delayed sonar array, but it does have a powerful computer acoustic signal processing system.
But now the active sonar pulses in the water are coming and going, and the signals are reflecting back and forth between various targets. The computer can easily calculate the specific location of each target.
But is it more maneuverable than a torpedo? Faced with modern torpedoes, submarines are much more helpless than aircraft.
As for the official communication ID, there is no official communication ID. The Taishan equipment is a test equipment and there is no household registration in the official communication system at all.
"I've already tried it, and I can skip this step, but the other party doesn't respond." It's definitely true when I think about it. This is not an experimental state. There is always an operator sitting in front of the console to keep the equipment turned on.
Waiting to receive information, you must send a legal connection request command, and then the other party will have a signal to summon the operator.
Academician Wang desperately recalled every detail of his participation in the hydroacoustic communication experiment.
The concealment effect of underwater acoustic communication equipment is not very good. Remember, its sound can be heard by sonar, but after modulation, it looks like ocean noise, so it is easy to deceive people's ears.
But as long as the opponent masters the signal characteristics of this device and gives it to the computer to identify, the submarine using this thing in front of the opponent will have no way to hide.
Therefore, Academician Wang once called this thing a waste, a contemporary high-tech product, but only suitable for use by wolves during World War II.
Obviously, the sonar soldiers on the nuclear submarine were either too lazy and did not take the signal sent by Xiao Song seriously, or they should have reported it to the commander.
It's just that the commander is still hesitant to turn on the device and try to see if it can receive decoding. It should be noted that other people's nuclear submarines have hydroacoustic communicators that work at similar sound frequencies.
"Right rudder! Heading 028." Academician Wang decided to take the initiative to promote the development of the situation again.
This time Xu Siqi repeated the order promptly and accurately.
"Xiao Song, you can directly send connection requests repeatedly, Su Qin, target 433, one active sonar pulse."
"Boom..." A sonar pulse was emitted straight ahead, followed by a long wait. The wait was so long that Su Qin put on the headphones with a little guilt.
"It seems like it didn't hit, wait a minute..."
"There is an echo, the distance is more than 40 nautical miles." Even with accurate computer timing, the speed of sound in seawater is not stable, especially in Antarctic waters.
Ice floes cause the salinity in seawater to vary greatly even within a small range, and precise distance data cannot be obtained. Moreover, for active sonar, this working distance is too far.
"Send another one." Seeing that Xiao Song had not responded yet, Academician Wang decisively decided to send another sonar pulse.
If we talk about the so-called noise characteristics of a submarine or what is called a voiceprint signal, it can be regarded as the fingerprint of the submarine.
"Who are you?" The call line was directly connected to the headset at Academician Wang's command position. As soon as Academician Wang was connected, he heard an anxious voice.
"This is Expedition 51. I only have one device here that is in early experimental status. I request that the situation be reported and the attack stopped. If safety is ensured, we can surface to the surface to verify the identity."
"Taishan number? That Taishan number?" The other party obviously knew about the Taishan number, but what was going on with the phrase "that Taishan number"? Before Academician Wang could think of how to reply to this sentence, another furious roar started coming from the other side.
"I don't care who you are, listen, dive immediately! Dive to the maximum depth! The beautiful Chinese have launched a nuclear bomb, you must get down immediately, you have no time to maneuver out of the attack range!"
"Nuclear bomb? What nuclear bomb?" Academician Wang could only think about it as a conditioned reflex, but before he could say anything, he heard the sonar signal processing computer's piercing alarm sound.
Su Qin only turned his head and glanced, then shouted loudly.
"The four torpedoes are accelerating, and two of them have accelerated to 40 knots. They must have cut the control cables and entered autonomous attack mode."
But no matter what, the information sent by the brotherly troops was not false. Academician Wang wanted to ask more questions, but the several torpedoes that had entered the active attack state still had sufficient energy.
The active sonar on the torpedo bombarded the Taishan one pulse after another, and the fragile hydroacoustic data link was immediately interrupted. It seemed that the nuclear bomb had to be believed, although the nuclear depth bomb had never been put into actual combat.
But it's nothing new, but why did the captain of the brother army suggest diving as deep as possible? The combat depth of nuclear depth bombs is quite large, and deep diving in the current water in this sea area is useless.
Moreover, as a conventional submarine, the Taishan cannot dive to its maximum depth, so it will not be able to escape. However, Academician Wang thought about it, besides deep diving, what other tricks does he have?
Whether sailing on the surface or underwater, he should not be able to escape. Otherwise, why would he use nuclear bombs as depth bombs?
"Bearing 233, countdown to 70 seconds for route intersection." Su Qin clearly read the prompt on the sonar signal processing computer screen.
"What should the captain do now?" This was the first torpedo fired in the last two minutes of the voyage.
"Turn to 233 with full right rudder, two cars entering three! Go ahead at full speed!" Academician Wang gave the order while personally ringing the rudder signal bell to notify the rear cabin to speed up. In the end, he could only focus on the torpedo in front of him.
The water depth at the current position is more than 300 meters. This depth is more than enough for limited anti-torpedo evasive maneuvers. Even if there is no cover provided by the seabed terrain, it may not be useful.
So he waited until Xu Siqi finished reciting the helm order before issuing the next order.
"Speed dive! Continue to dive at maximum speed."
The back cabin began to respond loudly.
"The maximum downward angle of the horizontal rudder is used to fill the speed diving tank with water, and all ballast water tanks are filled with water at the maximum speed."
"After 150 meters, the depth will be reported every 10 seconds." Academician Wang finally added another command, then grabbed the intercom and started calling the torpedo cabin alone.
"Attention torpedo room, are the decoys ready?"
"One is loaded and can be launched at any time." Zhao Rongguang's voice came over there. It seemed that the manpower in the torpedo cabin was still not enough.
"Speed up! Get ready for launch!" Academician Wang couldn't help but feel a little annoyed.
"50 seconds for torpedo No. 1, 80 seconds for torpedo No. 2, bearing 279!" As he spoke, another torpedo entered the final two minutes of sprint.
