Super Weapon Swap System

For Qin Guan, since he wants to do it, he must do his best. Anyway, even if he doesn't ask for it, the ruby Design Bureau will improve it.

Although they are all called kilo class submarines, there is a big gap in performance. In the early days, they were called 877, and later, they were called 636. Their appearance did not change much, but their displacement was slightly enlarged, but their combat capability was different.

Now, since the Han state wants to order, it's better to simply purchase the most advanced submarines. Moreover, if we want to improve, the submarine designers of the Han state will design with them. After all, many of the equipment inside will be replaced by the Han state's own equipment. In this way, the combat effectiveness of the submarine can be further improved.

The first transformation is the propeller.

For submarines, the noise generated by propellers is the largest. In the past, submarines used three blade propellers with high speed and high noise. Later, the number of propeller blades began to increase, including five and seven blades, and the number of blades began to increase. At the same time, the diameter of blades began to expand. In this way, they can obtain high enough thrust while reducing the speed, The lower the speed, the lower the noise.

"It is necessary to use seven blade or even nine blade large side inclined propeller with better design, and reduce the speed to 250 rpm, so as to have better low noise performance," Qin Guan said.

Spesky frowned for a while. Do you think it's so simple to say a word? Building a new propeller requires complex programming and complex calculations. Do you think it's as simple as talking?

"If you can't do it, you can leave the propeller at the tail and we can process it in China and then install it," Qin continued.

For a submarine, the propeller is one of the most confidential parts. It can be seen that even when it is transported in the dock, the propeller will be wrapped tightly, that is, it is afraid that the outside world will know the shape of the propeller, so as to infer the sound characteristics of the propeller.

Since this submarine was ordered by Han, Han should join in. Anyway, Han is absolutely the most advanced in this regard. There are countless schemes to achieve better performance. As long as the parameters of the transmission shaft are matched, the propeller can be installed by itself.

"In terms of batteries, the service life of the batteries you produce is only two years, which is absolutely impossible. We have better battery supporting enterprises in China, and the batteries produced can have a service life of at least five years. If you don't have the same batteries, we need to use our own batteries," Qin continued.

When the submarine sails underwater, the battery is the main power, which is no different from that of the elderly scooter and electric bicycle. The most common lead-acid battery has good performance in the first two years, and then it begins to shrink significantly. It used to be 100 kilometers full of electric energy, but in the end it can't even run 50 kilometers. For electric vehicles, it's not important to charge more times, For submarines, it's hard to force. Increasing the charging times of floating will increase the risk. Therefore, as long as the endurance is reduced to a certain value, they have to replace the battery.

Xiong Guo's products only have a service life of about two years. After that, they have to be replaced. Those produced by ourselves can last for at least five years. Therefore, if the other party does not have similar products, they have to use their own. In this way, they can achieve excellent performance. Qin Guan is definitely striving for perfection. Even with the AIP System, the battery indicators cannot be relaxed.

The oldest lead-acid batteries have always been used in submarines. Lithium batteries that can increase the energy density by a large part have never been used. This is because lithium batteries are too dangerous. If small batteries are connected in series and parallel to make a car, it is already very dangerous. Not to mention the batteries used in submarines, which are equivalent to dozens of cars, and are more complex, Moreover, the performance of this thing is not good at low temperature. After the submarine dives underwater, the temperature will not be too high.

Spesky's eyebrows are getting more and more wrinkled. Originally, he wanted to deceive the Han people. Who would have thought that they knew the parameters of their submarine so clearly that they even knew the life of the battery! They are not as easy to fool as the white elephant people!

"We also have a five-year battery, which can be used by you," spesky said.

"That's the best, but when we sign the agreement, we have to mark it clearly. If the battery life of the submarine is less than five years, you should be responsible for replacing it free of charge. We will leave the last balance and make it up in five years," Qin Guan said.

When Qin Guan said this, spesky was even more shocked. Their conditions were really harsh. In the past, when Xiong Guo sold military equipment to foreign countries, they were picky and had to deduct the balance!

This is market-oriented. It's not your era before. Qin Guan thought secretly in his heart. In fact, it's normal to leave part of the balance in any project. You promise a five-year life. What if you can't reach it in those five years?

Rely on your credibility? If the reputation is good, it really depends on luck. Like some electric vehicle enterprises, they promise a lifetime warranty for the battery, but the battery is not a battery. What if the control circuit of the battery breaks down? Moreover, even if the battery cell is broken, when people test it, they say that it is artificial to charge improperly when you charge. What can you do?

Only by leaving the balance can we have confidence. If you don't repair it for me, I won't give you the balance. It's that simple.

"Its sound insulation system should also be more refined to ensure lower underwater noise. We also hope you can use the latest silencing tiles."

Xiong Guo has made great progress in submarine technology in these years of development, including silencing tiles. They have developed many types of silencing tiles, which are pasted on the surface of submarines to greatly reduce noise. Of course, in the long voyage, silencing tiles sometimes fall off, so some submarines of Xiong Guo will be mottled and have a sense of vicissitudes.

"We hope to know the specific indicators of some equipment inside. If it is not advanced enough, we also hope to replace it with our similar equipment, especially the most important sonar system inside," Qin continued.

Spesky was about to start a case. We stopped your business! It's just four submarines. Why is there so much nonsense? It's just that we have to tailor it for you. The amount of labor paid in the design bureau is quite large, not to mention that the factory has to learn new technology again.