aircannonsinc Chapter 239
Chapter 239
Hearing Xu Hao's words, Mr. Huang's eyes lit up and he immediately became interested.
"Oh? Xiaohao, tell me..."
He was a little curious about what Xiaohao said.
The other researchers in the conference room also turned their eyes to Xu Hao.
If Xu Hao had said such a thing before, they would definitely think he was pretending.
But now there is absolutely no such idea.
Everyone has seen the strength that Xu Hao has shown during this period.
Even though they are in different fields at this moment, they are also in an attitude of listening and learning.
Xu Hao said.
"Mr. Huang, you are an expert in the field of nuclear submarines. I believe you also know that the biggest feature of nuclear submarines is 'surprise and surprise'."
"And to achieve this, you need to make the submarine 'silent' so that its survivability and attack performance can be maximized."
Mr. Huang nodded in agreement.
"Yes, this is the most basic and most important point of a submarine."
"Its attribute is equivalent to an assassin, making it impossible for the enemy to detect its traces, and then launching an attack at lightning speed to destroy the enemy's important defense and attack means."
On a nuclear submarine, the level of noise is an important criterion for judging the performance of a nuclear submarine.
Nuclear submarines with superior performance often have very low noise.
For example, the underwater noise level of the Eagle Country's Sea Wolf-class nuclear submarine can reach 95 decibels, which is currently the lowest noise nuclear submarine in the world.
The underwater noise of the most advanced North Wind-class nuclear submarine of the Bear Country is about 100 decibels, which is almost the same as the background noise of the ocean.
The Dragon Country started late and lags behind the Eagle Country and the Bear Country in terms of noise performance.
For example, the earliest Han-class nuclear submarine was as high as 140-150 decibels, while the noise of 093 and 094 was reduced to 110-120 decibels.
However,
As we catch up, the underwater noise of 095 and 096 nuclear-powered submarines can also be controlled below 100 decibels, almost on par with the nuclear submarines of the Eagle Sauce Country and the Bear Country.
But obviously, this is far from enough!
In response to this, Xu Hao put forward his own ideas.
"The main source of noise in nuclear submarines is the propulsion device."
"Therefore, if you want to make an absolute breakthrough in noise, you must work hard on the propulsion device."
Xu Hao stood up from his seat and came to the small blackboard at the front of the conference room.
Picked up a carbon pen and wrote on it.
"The current mainstream nuclear submarine propulsion devices can be roughly divided into three types: propeller propulsion, pump-jet propulsion and magnetic flow propulsion."
"Propeller propulsion mostly adopts low-speed multi-blade large-angle propeller design to reduce submarine noise and improve propulsion efficiency. For example, our 095 nuclear submarine adopts a seven-blade propeller and fillet structure."
"But no matter how it is designed, how to add blades, and how to accelerate the cavitation produced by the blades, it will produce a lot of noise, which is inevitable."
"For this problem, my suggestion is to use pump-jet propulsion!"
Hearing this, Mr. Huang's eyebrows flickered and his eyebrows frowned.
On the one hand.
He was surprised by Xu Hao's insights on nuclear submarines.
Unexpectedly.
I originally thought that Xu Hao had made some achievements in nuclear-powered aircraft carriers, but after listening to his well-reasoned analysis just now.
He seems to have dabbled in nuclear submarines?
And not shallow?
The most important thing.
Regarding Xu Hao's proposal to use pump-jet propulsion, Mr. Huang has a big question.
He asked.
"Xiaohao, your idea is very good."
"But you have to know that pump-jet propulsion is essentially no different from propeller propulsion."
"They still use the drive shaft to drive the propeller to rotate, generating reaction force to propel the submarine forward."
"The only point is that it reduces the noise generated by the rotation of the propeller to a certain extent."
They have also studied pump-jet propulsion, but the effect is not good and the cost is high.
Huang Lao's doubts did not deter Xu Hao.
He smiled slightly, full of confidence.
Looking at Huang Lao, he spoke.
"Huang Lao, what if the drive shaft is cancelled?"
Hearing this.
Huang Lao's face was stunned, and his eyebrows were raised instantly.
"Cancel the drive shaft? This..."
He lowered his head and thought.
Cancelling the drive shaft will greatly reduce the noise caused by the rotation of the drive shaft.
Now, the silent effect will be significantly improved.
But...
If the drive shaft is cancelled, what drives the blades?
It seems that he saw the doubts in Huang Lao's heart.
Without waiting for Mr. Huang to ask, Xu Hao spoke directly.
"Cancel the traditional drive shaft, install the propeller blades inside the annular duct, and integrate the power unitInside the annular duct outside the submarine, the motor drives the blades inside the entire annular duct to rotate together! "
"In this way, the propeller wingtip cavitation noise will be greatly reduced. At the same time, the noise of the drive shaft rotation will also disappear. "
"Not only that..."
"Since the power source of the shaftless pump-thrust is outside the submarine, it can greatly save the internal space of the submarine, and the overall combat effectiveness of the submarine will be significantly improved."
"In addition, the shaftless pump-thrust can be flexibly arranged, almost in any area of the submarine's tail, to improve propulsion efficiency. It can be reversed and reversed in advance!"
After Xu Hao finished speaking, the entire conference room fell into a long silence.
Even Mr. Huang was staring at Xu Hao at this moment, looking at what he wrote on the small blackboard.
The turbid eyes were full of shock and disbelief at this moment.
It took him a long while to come back to his senses.
Looking at Xu Hao in a daze, his mouth muttered.
"Genius!"
"Xiaohao, you are really a genius! ”
“Using shaftless pump-propelling technology, the noise of nuclear submarines will reach a terrifying level.”
“Such a nuclear submarine is completely a real big black fish under the ocean, invisible and silent. It takes the enemy by surprise and attacks them when they are unprepared. By the time the enemy reacts, it is too late!”
“Huh…”
Mr. Huang stood up excitedly and walked towards the small blackboard tremblingly.
Seeing this.
Xu Hao was startled and hurried forward to support him.
Mr. Huang did not refuse, and his palm tightly grasped Xu Hao's wrist.
It can be imagined how excited this old man in his nineties was at this moment.
He pointed to the small blackboard filled with content written by Xu Hao and asked Sun Su.
“Sun Su, this small blackboard is given to me. If you have any requirements, just ask! "
Sun Su, who was already extremely shocked by what Xu Hao said, was even more shocked when he heard what Huang Lao said?
???
What's going on?
Huang Lao didn't even let go of the blackboard of the 701 Institute?
But...
He obviously knew that what Huang Lao valued was not the small blackboard of the 701 Institute, but what Xu Hao wrote on it.
Naturally, he was embarrassed to refuse and agreed directly.
"Huang Lao, if you want me to give it to you, how can I not give it to you? Hahaha..."
Seeing Sun Su agree, Huang Lao was satisfied.
Looking at Xu Hao, he said from the bottom of his heart.
"Xiao Hao!"
"It's really a waste of your talent to stay in 701..."