Chapter 707: Thoughts (Part 2)

"Easier said than done?" Zhao Yanyan sighed, then suddenly thought of something, turned her head and asked Guo Tailai, "Do you have a solution?"

"The noise that a submarine can produce is nothing more than a few points, the hydrodynamic noise produced by the shape during navigation; the active noise produced by the rotation of the propeller; the position and design size of the drainage hole will also produce noise; the most critical is the engine, transmission, etc. The shaft running device will generate noise." Guo Tailai thought for a while, then slowly replied: "Revise the design in a targeted manner!"

"It's hard." Zhao Yanyan shook her head, she didn't know the truth, but it was too difficult to realize.

"I don't have any good suggestions for the shape, and I'm not very familiar with fluid mechanics." Guo Tailai pondered and replied: "But the improvement of materials and some processes should be able to reduce it?"

"Generally speaking, if the noise can be reduced by 6 decibels, the detection range of the enemy's passive sonar will be shortened by 50%!" Zhao Yanyan agreed with this point: "If you use your level of processing accuracy, it can indeed be reduced a lot."

"I'll think about the materials. I should be able to find some suitable materials for the anechoic tiles. If possible, they can also absorb some radar waves." Guo Tailai thought for a while: "Pay attention to some special joints to isolate some of the materials that pass along the pipeline. The vibration and noise should be reduced a bit, right?"

"But the engine, the transmission shaft and the propeller are the main noise sources!" Zhao Yanyan knew what Guo Tailai meant. Although it could be reduced a little, the place that accounted for the largest proportion was not solved. The reduced noise of other parts was not enough to make the submarine Noise reduction.

"The propeller is noisy." Guo Tailai pondered for a while, and said slowly: "You can refer to the latest propeller design of the United States and Lao Maozi. We now have large-format five-axis CNC, and we can also process high-precision curved propellers. If the size is not enough If it is, I can make it even bigger, and there have been some improvements recently, and it should be able to achieve higher precision. The area can be several times larger."

"Really?" Zhao Yanyan was overjoyed, lifted her body from Guo Tailai's chest, and looked at Guo Tailai in great surprise.

"Really." Guo Tailai nodded, but then he remembered something: "It seems that too big a workpiece doesn't need such high precision."

Zhao Yanyan also gave a wry smile, and pressed her face against Guo Tailai's chest again. Guo Tai is right. Those large workpieces are different from precision workpieces. They can easily exceed the size of a few meters. At that size level, a temperature change of just one degree Celsius can trigger hundreds of times the processing accuracy required by some precision workpieces. It is enough to change to a few wires, and there is no need to be more precise. And generally speaking, the working environment of large workpieces is unlikely to be constant temperature.

"What else?" Zhao Yanyan continued to ask.

"The future will definitely be dominated by magnetic fluid thrusters." Guo Tailai said with certainty: "Last year or the year before last, didn't we already have some scholars who successfully developed a magnetic fluid thruster?"

"The size and power are too small." Zhao Yanyan shook his head slightly and said: "The hull can be pushed up to one ton at most, and the speed can't reach one meter per second. It's still in the experimental stage, and it's far from practical application. And it needs a large generator. The battery also needs a revolutionary improvement."

"Or learn from the single-shaft jet propulsion of the American Seawolf-class nuclear submarine." Guo Tailai said subconsciously, but immediately denied it himself: "Well, they are behind, their latest should be the single-shaft single-blade pump jet propulsion, we You can do it too!"

Zhao Yanyan raised her head again, and looked at Guo Tailai with a smile, her face full of pride. If it were someone else, at this time, they might ask Guo Tailai why he knew such details. Seawolf-class nuclear submarines are a bit early, so it’s not surprising. How did he know the propeller information of the latest Virginia-class nuclear submarines in the United States? But Zhao Yanyan didn't ask at all, did the fat man know something, did he need to explain it to others in such detail?

"Single shaft and single propeller is actually not the best." Guo Tailai thought for a while and said: "We can try a shaftless pump to push the drive shaft directly, and naturally there will be no noise from the drive shaft. If the engine uses a motor If it is used, it can definitely be very quiet. At that time, conventional submarines can be completely lower than the background noise of the ocean.”

"What about a nuclear submarine?" Zhao Yanyan asked.

"The reactor must not be shut down at any time." Guo Tailai replied quickly: "It depends on the efficiency of the anechoic tiles and sound insulation materials, as well as the application of other sound-absorbing designs. You can try it, and maybe it can be equal to the background noise of the ocean."

Come on, Zhao Yanyan kissed Guo Tailai on the cheek, and then got up directly. The noise of the nuclear submarine is equal to the background noise of the ocean, which means that it is almost impossible to be easily detected. This is a real weapon of the country, and Zhao Yanyan has to report it quickly anyway.

As for whether Guo Tailai's ideas could be realized, Zhao Yanyan never doubted that Fatty had never let her down. It doesn't matter how it is realized, she just needs to know that this is a shortcut to quickly catch up with the advanced submarines of the United States and Russia.

Didn't my fat man also say that he is going to study sound-absorbing materials? If it is a report from a certain research institute, Zhao Yanyan may need to check it out, ask experts to discuss it, and then hold a meeting with the leaders of the final assembly for a long time to study. But if the fat man says to do it, Zhao Yanyan doesn't even have to think about it, then he must be relatively confident.

In this regard, Guo Tailai has a natural advantage. He does not need state funding, and sells the results to the state after he has results. In this way, private companies bear a large part of the decision-making risks. Compared with state research, it is actually more cost-effective. Because Guo Tailai doesn’t need to pay attention to academic disputes, he doesn’t need to argue about which school is right or wrong, he is the boss, he can do what he wants, but the state investment is not like this, there are too many things to consider, whether it is the utilization rate of funds or efficiency. There is no way to compare with Guo Tailai's private company.

The flexible system and the incentive system that thoroughly mobilizes the enthusiasm of researchers make Zhengyifang Technology's high efficiency frightening. The aircraft carrier deck steel that the fat man invested in before, the formula has been successfully researched in just half a year, and the strength fully meets the requirements, and the process is now being studied. This speed is unimaginable among national research institutes, but unfortunately, only Guo Tailai and his family can do it.

Anyway, now whether it is Zhao Yanyan or the general assembly, they all have a kind of trust in Guo Tailai and Zhengyifang Technology. As long as they plan to invest in development, there is almost nothing that they cannot develop.

"I wish I had heard about it when General Li was around." Zhao Yanyan couldn't help complaining to Guo Tailai: "If he knew, he would be so happy."

"Isn't that just an idea?" Guo Tailai laughed: "Wouldn't it be more pleasant to wait until we really have something?"