The Air Force started with the repair of fighters

Chapter 189

“It’s hard to do.” Zeng Zhemao mused to himself.

The Seawolf-class and Ohio-class nuclear submarines are both leading the way in dealing with submarine noise.

It is a huge challenge to develop a sonar system that can face these two nuclear submarines without giving up.

The level of the sonar system must at least reach the level of sonar installed in the United States.

“You can’t be fat in one bite.”

Yao Weiming smiled bitterly and said: “What we can do now is to develop a shaftless pump thruster as soon as possible, and first greatly reduce the noise of 095.”

“Our sonar can’t sweep away the U.S. nuclear submarines, at least they can’t sweep our sonar.”

“As for the sonar system, it can only be done step by step slowly.”

“In addition, we have to solve the problem of air noise and self-noise in cabin 095.”

Yao Weiming sighed after speaking.

The noise of the thruster is radiated noise.

This is the main problem with the noise of nuclear submarines.

As for cabin air noise and self-noise, it is related to other aspects.

In a word.

There are questions about submarines, one after another.

After solving one, there is another.

“Anyway, independent research and development, the difficulty is more. But no matter how many difficulties there are, we must persist in breaking them. ”

“Only the technology obtained through independent research and development can be regarded as truly in the hands of our dragon country itself!”

Yao Weiming’s tone was resolute.

When Xiao Yun heard this, he couldn’t help but sigh.

Without researchers such as Yao Weiming and Zeng Zhemao, Longguo’s independent research and development path does not know how difficult it will be.

Imitation, easy very.

For example, the Falcon Eagle.

But imitation is imitation after all, there is no progress.

What others do, you can only do with it.

Always one step behind others.

What is the significance of such research and development?

“Only independent research and development is the right way.” Xiao Yun smoothly spoke his heart.

Zeng Zhemao and Yao Weiming were stunned when they heard this, and then laughed loudly.

“That’s fine!”

“Indeed, independent research and development is the path we should take.”

The three looked at each other and laughed.

At this moment, a boom suddenly sounded.

Glancing at the water tank, Yao Weiming said with a smile: “The test is about to begin, let’s leave the water tank first.” ”

After he finished speaking, Xiao Yun and the three walked out of the water tank.

After they left, the tanks began to close.

Immediately afterwards, the submariners began to enter the tank.

Among them, Xiao Yun saw Jiang Xiaoyu’s figure.

He was actually in charge of this test?

Xiao Yun raised his eyebrows.

This kind of thing will generally be done by the corresponding test soldiers.

Although it is a test soldier, the technology of the test soldier is the best among all soldiers.

For example, the test flight of the J-20 demonstrator was completed by top pilots such as Chopin.

Because only if your own technology is strong enough, you can react in time when you encounter a situation during the test.

It seems that Jiang Xiaoyu is also an elite in piloting submarines.

Xiao Yun came to a conclusion in his heart.

……

Ten minutes later, all the submariners entered the nuclear submarine, and the hatch of the nuclear submarine closed.

Immediately afterwards, in the floating dock tank, an iron door opened.

The turbulent sea water seemed to have found an outlet and began to roll into the inside of the tank.

Xiao Yun looked through the glass and watched the submarine gradually flooded by the sea, his brows furrowed.

His gaze rested on the blades of the shaftless pump-jet thrusters.

This paddle, the material is not good, it is too easy to break.

Sure enough, the information provided by the system is awesome.

Xiao Yun sighed in his heart.

Buzz –

A buzzing sound suddenly sounded.

Immediately afterwards, the water tank began to sink and gradually submerged into the sea.

“Test starts!”

With a shout from the staff, the shaftless pump jet propeller on the butt of the 095 II began to turn.

Speed from slow to fast.

After reaching a certain speed, the 095, propelled by the thrusters, began to sail towards the sea ahead.

Immediately afterwards, the researchers began to report data to Yao Weiming.

“The current speed is 10 knots, and the noise is 94 shells!”

“The speed is about to increase to 15 knots, start testing the noise…”

Hearing this data, Xiao Yun’s eyebrows raised slightly.

The noise created by the shaftless pump jet propeller is really small.

The noise of the ocean itself is about 90 decibels.

So when the decibels of the submarine are about 90 decibels, the enemy submarine is basically undetectable.

Take the most advanced nuclear submarine in the United States, the decibels at low speed are about 90-100 decibels.

Now the noise level of 095 at low speed has caught up with the most advanced nuclear submarine in the United States.

As for the noise level when driving at high speeds, it also depends on the data.

“The current speed is 15 knots, and the noise is 102 decibels!”

“The current speed is 20 knots, and the noise is 114 shells!”

“The current speed…”

The data of a group is reported.

At 095 reaching 30, the noise was 137 decibels.

Xiao Yun nodded in satisfaction.

This result is not bad.

It is not known how much noise will eventually be if the speed continues to increase.

“The test is over, ready to return!”

While Xiao Yun was waiting for the data behind, the researchers suddenly announced that the test was over.

Slightly stunned, Xiao Yun frowned and looked at Yao Weiming.

“Maximum speed 30 knots? This motor can’t work! ”

You must know that Mao’s nuclear submarines can already reach a maximum speed of 46 knots.

The maximum speed of the US nuclear submarine, which is weaker, can already reach 38 knots.

30 knots? You can’t catch up with people to fight.

“The motor really doesn’t work…”

Yao Weiming replied a little embarrassed, and he immediately explained.

“The shaftless pump jet propeller operates with electricity, and the motor is mounted on an external ring conduit.”

“Our integrated power system is not perfect enough, and in the case of limited size, the horsepower generated by the motor is only about 35,000 left, and the power is not large, resulting in insufficient thrust of the thrusters.”

“So the current maximum speed can only reach 30 knots.”

“Then maintain a maximum speed of 30 knots, dive into the water, how long can a nuclear submarine sail?” Xiao Yun immediately asked.

Sighing, Yao Weiming said helplessly: “It can only sail 40 nautical miles.” ”

“240 nautical miles…”

Xiao Yun muttered to himself while calculating in his heart.

1 knot, which is 1 knot.

240 li, that is, at 0 nautical miles / hour, continuous sailing for 8 hours.

That is, when maintaining maximum speed, the 095 can only sail for 8 hours.

Even if it is driving at low speeds, it can last for a day or two.

The maximum speed is slow and the duration is short.

The problem of the motor is not a little serious.

Really.

The drawback of the shaftless pump jet propeller motor is still too difficult for Yao Weiming and them to overcome.

Xiao Yun sighed in his heart.

But fortunately, the system also provides research data on motors.

The current situation will be greatly improved.

When Xiao Yun thought about it, he suddenly felt that it was nothing.

Just as he was about to chat with Yao Weiming, the researcher’s panicked voice suddenly came to mind.

“Report! The 095 nuclear submersible shaftless pump jet thruster failed, and it was suspected that there was a problem with the blades, and it was impossible to continue sailing! “_

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