Chapter 406 Submarine Model

Yangcheng Shipyard.

The South China Sea Fleet has just driven away the Type 022 missile boat, Type 022A torpedo boat, and Type 083 minesweeper.

Liu Tao also focused on the development of submarines.

There is naturally no way to build a complete submarine.

But there is no problem in making a submarine model.

He will stay in the Yangcheng Shipyard for a while and try to complete this work before the Spring Festival.

The steel selected as the submarine hull has a yield strength of 590 MPa.

Liu Tao knows that such steel is not enough. If you want the submarine to be underwater deep enough, then according to Liu Tao's estimate, the yield strength must reach about 800 MPa.

However, Liu Tao does not have this kind of special steel.

First use the current special steel as the submarine hull, and then use your own gold finger to upgrade it.

At present, China is still quite lacking in special steel used in submarines.

Because submarines fight underwater, they have very good requirements for steel. They must be metal materials with high yield strength, good corrosion resistance and good ductility.

In terms of steel requirements, submarines have much higher requirements for steel than surface ships.

One of the important reasons why China's nuclear submarines are not very good is that the material of the hull is not very good.

Originally, the 091 attack nuclear submarine and the 092 strategic nuclear submarine were very noisy. The noise at high speed was far more than 100 decibels, reaching the range of 140~160 decibels. As soon as they left Qingdao, the US military in Guam could hear it, so they were also called "underwater tractors" by the US and Japanese intelligence departments.

Later, the propellers of nuclear submarines were processed with high precision by the five-axis machining center at Panshan Machinery Factory, which greatly reduced the noise, and this aspect was improved a lot.

However, Liu Tao can help with processing, but he can't help with other things, such as nuclear reactors, which are much behind the US and Soviet nuclear submarines. In terms of materials, due to material limitations, the diving depth of the two nuclear submarines is less than 300 meters.

The diving depth of US and Soviet nuclear submarines can reach 400~500 meters.

Although the diving depth is only 100~200 meters different, the difference is huge.

The deeper the diving depth, the more secretive the submarine is, the more difficult it is to be detected by sonar, the safer the submarine is, and the greater the threat.

Liu Tao's positioning of conventional submarines is that the diving depth is 300~400 meters, and it can perform a variety of tasks including near-shore operations and ocean patrols.

After spending some effort, Liu Tao finally made the first submarine model, which looks like a Type 035 submarine.

Throwing the submarine model into the sea, Liu Tao took a boat out to sea. On the boat, Liu Tao controlled the submarine to sneak.

Liu Tao looked at the status of the submarine model on the screen.

The development of submarines is much more troublesome than that of surface ships, because submarines are underwater during testing and cannot be seen.

Maybe during the test, the submarine model is finished, it may be caught in a fishing net, or it may lose the signal and cannot be controlled.

So Liu Tao seemed cautious.

Once the submarine model is finished, it means starting over.

Every day he spends almost all his time testing the submarine model.

As time goes by, he optimizes the submarine model again and again.

More than a month has passed in the blink of an eye.

It is approaching the Spring Festival.

Liu Tao carefully controls the submarine model to float up.

Compared with before, this submarine model has undergone tremendous changes.

Putting his hand on the submarine model, Liu Tao looked at the virtual panel:

[Item: Conventional Submarine Model]

[Manufacturer: Liu Tao]

[Item Level: LV9 (1000000000/1000000000) (Upgradeable)]

[Upgrade Points: 2800]

[Item Status: Intact, Analyzable]

"System, upgrade!" Liu Tao muttered in his heart.

[Please select the upgrade direction! ]

Looking at the upgrade direction selection on the virtual panel, Liu Tao upgraded the AIP system this time.

The so-called AIP system is an 'air-independent propulsion device'.

Conventional submarines use diesel engines when sailing on the surface and batteries underwater; the battery capacity is limited, so after a period of time, they must float to the snorkel state and use the diesel engine to charge the battery.

In order to solve this part of the defect, all countries are exploring and working hard.

Liu Tao is naturally also working on this technology for this submarine.

This time he upgraded the AIP system.

Swish~~

A faint light flashed.

Looking at the virtual panel again, the data has changed.

[Item: Conventional Submarine Model]

[Manufacturer: Liu Tao]

[Item Level: LV10 (0/10000000000) (Not Upgradable)]

[Upgrade Points: 2800]

[Item Status: Intact, Can Be Analyzed]

Liu Tao pondered for a moment and knew that the submarine model was not enough to be upgraded in this way.

Then, Liu Tao chose to upgrade with upgrade points, leaving only enough upgrade points for analysis.

Swish~~~

A faint light flashed.

Liu Tao chose the direction he wanted to upgrade one by one.

Then he silently said in his heart: "System, analysis!"

Suddenly, drawings quickly appeared on the virtual panel, these were all design drawings.

Soon, tens of thousands of drawings were completed.

If scientific research and development are truly carried out, hundreds or thousands of people will have to work hard for ten or even twenty years, and the data generated during the whole process will require at least twenty or even thirty train cars to fit.

But Liu Tao does not need it, he only needs to analyze it in the end.

The development of just such a submarine will save the country at least tens of billions or even tens of billions of scientific research funds.

Liu Tao controlled the submarine model and went to Yangcheng Shipyard.

Even if it is just a model, the value inside is very high.

Therefore, the models used by Liu Tao are highly confidential, and the models will eventually be transported to the collection hall of Panshan Group for collection, and no leakage is allowed.

When he arrived at Yangcheng Shipyard, he operated the equipment to lift the entire submarine model. Although it was just a model, it weighed a lot, up to nearly 70 or 80 tons.

Then Liu Tao arranged for someone to transport the submarine model back to Panshan Group.

After that, Liu Tao went to Dalian Shipyard, stayed there for two days, and then returned to Panshan Group.

At this time, the submarine model had arrived at Panshan Group and was placed in the collection hall.

The collection hall mainly contains models of various weapons and ammunition, and the first weapons. Of course, not all of the first guns, cannons, and vehicles of each weapon are available, but they will be supplemented later.

In addition, there are some photos, including the original photos of each factory, photos of the reconstruction, and various group photos, recording the transformation of Panshan Group.

Every milestone is recorded.

In addition, there are some videotapes that record the changes of the times and the battles of the front-line troops.

These are precious materials, and they are also left for future people to understand the past years.

Liu Tao came back this time to test the weapons and equipment, missiles, and torpedoes that were transported to the headquarters of Panshan Group during this period.

In more than a month, a lot of them have been piled up.

In addition to testing weapons and equipment, the design drawings of submarines are printed.

The relevant size adjustments are all expanded accordingly.