Although they had been on the warship for more than one month, and all the officers and men of the Kunming were very tired, they were all soldiers after all, so after receiving the order from the Central Military Commission, they did not have much objection and asked the Huaihua to return to Hong Kong first, and they joined up with the Sanya, Qingzhou, and Yizhou to monitor the submarine's sea trials.

The captain of the trial submarine was named Hu Wei, who turned out to be the deputy head of the sonar group of the radar department of the Kunming ship. In fact, there are no professional submariners in the crossing army, but the sonar of the warship is used to deal with submarines, so the fighters of the sonar group have a very deep study of submarines, and in the old time and space, they have all visited submarines, and they are very familiar with the performance characteristics and operation methods of submarines. The Kunming is the warship with the strongest anti-submarine capability in the Chinese Navy, and the hull sonar and anti-submarine electronic equipment on board are also the best, and the sonar group equipped with it is naturally the best.

However, Li Lina, the leader of the sonar group of the Kunming ship, is a woman and is suitable for working on the submarine, and the deputy team leader Hu Wei naturally became the best candidate, and the other three officers on the submarine are also soldiers on the Kunming ship, namely the * team leader Chen Yuantao, the helmsman Huang Dajun, and the power team leader Yi Xuan. These 4 people made up the officer group of the submarine.

This time it's just a test * launch, as long as * can be launched from the submarine, although the performance of * will also be examined, but the hit rate is not within the scope of the test, so the target ship is not arranged, but to launch * at a cliff near the shore, as long as * can hit the cliff and explode, it is qualified.

* is one of the important weapons in modern naval warfare, although the performance of this era is still very backward, but it is also a naval warfare weapon that all countries attach great importance to, because the emergence of * theoretically makes small ships also have the ability to sink battleships, so in the 80s of the 19th century, France has developed a set of theories of green water naval strategy on the basis of *, that is: * is the magic weapon to defeat the enemy at sea, and it will no longer be the huge battleship but * Attack ships, so in 1884 France canceled all battleship construction programs and built * boats exclusively. Although it later turned out that France's strategic theory of a green-water navy was a complete failure, the role of * was something that no country dared to take lightly.

Of course, at the beginning of the establishment of the East China government, there was no * ability, and the * used * was purchased from Germany, but the East China government never gave up the ability to open up independently, so on the basis of the * purchased from Germany, entered the retrograde development, and now there are finally results, the ship-borne * has been finalized in 1904, officially named the "Barracuda" type*, and has begun to be equipped with the People's Army naval forces; and after the development of submarines is on the right track, the Barracuda "type" * On the basis, the development of a submarine-launched version is also being carried out simultaneously, and is now being tested simultaneously with the submarine.

The "Barracuda" type * is heavy *, with a diameter of 530 mm, a length of 5.4 meters, a total weight of 1.32 tons, a warhead charge of 165 kg, a trigger lead, a speed of 32 knots, and a maximum range of 5000 meters.

The task of the Kunming is not only to monitor the actions of the submarine under water, but also to monitor the trajectory of the submarine in the sea in order to determine the performance of the submarine-launched and find the direction of further improvement.

A group of warships came to the test area, and the submarine captain Hu Wei ordered the submarine to sink, although the submarine cannot use radio communication in the sea, but it can release floating antennas to receive radio signals, so it can also communicate with other warships on the seabed.

After Hu Wei gave the order, the inside of the submarine was also busy, because the sinking of the submarine, on the one hand, it was necessary to open the gate of the pressurized water tank, inject seawater, and the water injection must first be injected into the bow of the boat, so as to ensure that the bow of the boat was tilted downward; on the other hand, the horizontal rudder had to be adjusted to cooperate with the water injection of the pressurized water tank.

"Report the length of the boat, 80 tons of water, 15 meters deep, 12 degrees of inclination, speed of 5 knots. ”

Hu Wei grabbed the handrail with one hand and said, "Stop filling water and restore balance." ”

Although the maximum depth of the submarine is 100 meters, in the actual combat of this era, the submarine will basically not dive below 50 meters, because the submarine in this era still relies on the bottom of the sea to advance, and when it reaches the bottom of the sea below 50 meters, the visibility will not exceed 100 meters, and it basically loses its value. Moreover, it is not possible to launch at a depth of 30 meters. Therefore, unless they want to hide their whereabouts, the general area of activity of submarines is within 50 meters below the sea surface.

After the submarine regained its balance, Hu Wei ordered the release of a floating antenna to make contact with the surface ships, and at the same time raised the periscope to observe the position of the target cliff.

The periscope rose out of the water, Hu Wei stuck to the observation hole, looked at it for a while, and said: "Turn the rudder 11 degrees to the left and keep the speed unchanged." ”

At this time, the signal corps reported to Hu Wei that contact with the Kunming ship had been restored, and Hu Wei said: "Inform them that we are going to launch." Then he ordered: "Launch tube No. 1* is filled with water." ”

In fact, the principle of underwater launch* is not complicated, that is, compressed air is injected into the tail of the *launch tube, and the * is pushed out of the launch tube by the extrusion of the air, and then *driven forward* by *its own power. Therefore, before launching, the launch tube should first be filled with water, so as to better play the function of compressed air.

However, immediately after launch, the launch tube should be shut down, and the air is absorbed by the air recovery chamber located near the mouth of the launch tube, which prevents the air from entering the seawater, creating a large number of bubbles and revealing the submarine's whereabouts.

At this time, the distance between the submarine and the cliff wall is about 630 meters, which is basically the effective range of this era, and it takes about 40-45 seconds to complete this distance. During this time, the submarine was able to move at a distance of about 150 meters, and it was basically impossible to escape from the spot, so it could only dive to the maximum depth to hide its whereabouts.

"The No. 1* launch tube has been filled with water. ”

"Launch. ”

With Hu Wei's order, the submarine trembled suddenly, and looking at the lookout window at the bow, it could be clearly seen that a waterline shot out from the bottom of the submarine, extending forward.

The Kunming ship on the surface of the water had already turned on the hull sonar on the bow of the ship and closely monitored the situation on the seabed. In the command room of the Kunming ship, on the main display screen, a three-dimensional map of the seabed is displayed, and the location of the submarine and the movement trajectory of the submarine can be seen very clearly. After the establishment of the East China government, a comprehensive scan of the seabed along the coast of Shandong was carried out, and a three-dimensional map of the seabed was generated as the basis for the navigation of warships and ships. Significant resource savings can be achieved now.

* After the launch, Hu Wei's eyes were glued to the lookout hole, staring at the cliff in the distance, and his heart was reading the seconds and calculating the time. When Hu Wei counted 43 seconds, he saw that on the edge of the cliff, a column of water suddenly surged into the sky, and dazzling firelight and billowing smoke emerged from the sea, and a large number of rocks fell off and fell into the sea.

Hu Wei said: "Everyone hold on, be careful of falling." Before the words fell, the submarine immediately shook violently, and despite Hu Wei's warning, three soldiers were unsteady on their feet, fell to the ground, and rolled on the ground as the submarine swayed. Although Hu Wei held on to the handrail tightly and did not fall to the ground, his head hit the periscope, and he didn't care about the pain, and shouted at the top of his voice: "Steady the rudder, steady the rudder." ”

This is due to the shock wave generated after the explosion, which caused an impact on the submarine. Although the submarine is more than 600 meters away from the center of the explosion, first, the charge of the submarine is too much, almost three times that of a 305-mm shell, so the impact force produced in this way is naturally greater; second, the explosion in the water is much greater than that in the air; third, the volume of the submarine is too small, and the underwater is only more than 600 tons, so the impact resistance is naturally weaker, and several warships with similar positions to the submarine are much better, although they also feel a shaking, but it is not much different from the big waves.

After almost 10 minutes, the submarine was stabilized, and Hu Wei said while touching the position where his head was hit: "All departments report the situation." ”

Although the impact on the submarine was not small, it only shook and shook for a while, until there was no loss, and even the floating antenna that was released out of the sea was basically normal, and communication was restored, of course, several soldiers were injured in the bump just now.

Hu Wei nodded and said, "The 2nd* test shot." ”

The second * was launched with the No. 2* launch tube, and this time Hu Wei also learned smartly, before the * launch, he retracted the floating antenna, and after the * shot out of the launch tube, the submarine immediately sank to a place of 70 meters, sure enough, the impact this time was significantly smaller, and the submarine quickly stabilized its balance, and only after the shock wave subsided, did it float to the position of the launch * again. He also released the floating antenna again, got in touch with the surface warship, and learned about the results of the launch, and naturally succeeded again.

The third test launch was the simultaneous launch of the No. 1 and No. 2* launch tubes, and the submarine still concocted the same method, but this time only one of the two * exploded, and the other ran aground in the shallow reef. And the Qingzhou ship sent a small boat to pick up the unexploded * and bring it back for testing. Although this is a very risky approach, it has to be done, and only by bringing the unexploded* back for testing can we find out the problems and improve them.

The fourth test launch is to test the No. 3 * launch tube, that is, the * launch tube located in the tail of the submarine, and after this launch, the submarine did not sink, but immediately turned on full power, rushed backwards, at the time of the explosion, has driven a distance of more than 150 meters, when the shock wave arrived, and by the momentum of the shock wave, continued to drive, to the point was not greatly affected.

All 5 rounds* were successfully launched, and only one did not explode, of course, it is reasonable for such a problem to occur, and scientific research and development has been smooth sailing, so this test has also been completed and achieved the goal.