Chapter 633: A Bigger Caliber

Boarding.

Set your destination.

Takeoff.

Two hours later, we arrived at our destination without any problems.

The little golden dragon helicopter landed slowly.

It's a remote seaside.

On the coast, five PLZ255 heavy guns are already lined up, with huge muzzles pointing at the sky.

The test-firing personnel mobilized from the unit are in place.

For this test launch, Wang Buan is very much looking forward to it.

After all, it has too long a range.

The landing point of the shell can only guarantee an accuracy of ten meters.

That is, the maximum error is likely to reach about ten meters.

If it is used to attack small targets, such accuracy is obviously not enough. The accuracy needs to be about one meter.

However, for an artillery gun at an ultra-long range, this accuracy is already very high.

After all, it fires artillery shells, not precision-guided missiles.

If it is an artillery-launched missile, of course, the accuracy can continue to improve.

"Chief Engineer Wang!" Tawu greeted him warmly.

"Hello, Minister Tau. Wang Buan responded politely.

"Chief Engineer Wang. Chai Lufeng and Wang Buan greeted each other.

"Hello. Wang Buan nodded.

casually glanced around......

Unexpectedly, I saw a familiar and unfamiliar face in the crowd.

Sheng Huainan.

He actually reappeared.

It's really strange, this is a test launch of a PLZ255 heavy gun, what does it have to do with him?

He is studying nuclear submarines, why not get busy with his own business?

It's been in research and development for so long, and there is no movement?

Is it because of some technical difficulties?

Deserve!

Deserves no one!

You deserve to be above the top!

Without the help of Tyrannosaurus Rex Industries, I'll see how you solve the puzzle.

"What's the matter, you and Sheng Huainan are a little unhappy?" Chai Lufeng was really smart, and immediately felt Wang Buan's unhappiness.

"There were some disagreements on the technology. Wang Buan said quietly, "It's all trivial." ”

"It is said that his nuclear submarine project will soon be launched. ”

"How much tonnage?"

"Forty-nine thousand. ”

"Good fellows. ”

Wang Buyan smacked his tongue secretly.

This Sheng Huainan is really not a fuel-efficient lamp.

Sure enough, the maximum tonnage scheme was adopted. Up is a displacement of 49,000 tons.

Looking at all nuclear submarines in the world, this number can also be said to be the first. Even the typhoon size of the polar bear cannot be compared.

What waves, what Ohio, what goddess of the north wind, in front of it are all scum!

"The power problem has been solved?" asked Wang Bu'an curiously.

"I guess it's going to be two Rock 700 engines. Chai Lufeng said.

"Really?"

"Rock 700 ......"

Wang Buan nodded to himself.

The single power of the Panshi 700 combustible hydrogen engine is 100,000 K, which is 136,000 horsepower.

If two are installed, it can indeed drive a 49,000-ton nuclear submarine. Even compared to the nuclear power of the USS Ford, it is not inferior. Even, more energy-saving.

Nuclear power also needs nuclear fuel. Maintenance costs are also high. But the combustible hydrogen engine saves everything.

From this point of view, there is no problem with the powertrain.

The most critical is the housing material.

Is it to take pure titanium alloy?

However, the price of titanium alloys is very expensive.

A 49,000-ton pure titanium nuclear submarine needs about 30,000 tons of titanium alloy.

According to the calculation of 60,000 yuan per ton of titanium alloy, the cost of shell materials alone will require 1.8 billion yuan.

The price is still relatively high. It will push the price of the entire submarine to more than 10 billion yuan. After all, other raw materials or equipment are not cheap.

10 billion yuan!

It's just a nuclear submarine!

I'm afraid that the higher-ups may not approve it. Too much over budget.

In addition, the processing technology of titanium alloy is also very high. It is estimated that it will be difficult to meet the requirements.

Seriously, the price of titanium alloy itself will not be very expensive. China itself is a big titanium producer. Titanium is also not a true rare earth metal. Its stock is very large.

Why is the price of titanium alloy so expensive? The main reason is that it is difficult to separate and difficult to process.

The process requirements for the post-processing of titanium alloys are very high.

For example, titanium spectacle frames. The cost of raw materials is actually dozens of dollars.

However, in order to process titanium alloy into the shape of a frame, the process requirements required are very high. Very few factories are able to do that.

Gas impurities (oxygen, nitrogen, hydrogen, etc.) have a great influence on the machinability of titanium alloys, because titanium is chemically reactive and easily combined with gas impurities. When the temperature exceeds 600 degrees, titanium is oxidized to form a brittle layer, the so-called "microstructure α layer", which produces hydrogen embrittlement with hydrogen and hard and brittle TiN with nitrogen at high temperatures.

In addition, titanium alloy has little plasticity, which obviously affects its plastic deformation during cutting. The deformation coefficient of titanium alloy is only 1 or even less than 1, while the deformation coefficient of ordinary carbon steel is about 3. During cutting, the chip has a very small contact surface with the rake face, which makes the contact zone pressure and local temperature high, and the tool wears quickly.

Titanium alloys can produce severe work hardening when machining. When C>0.2, the titanium alloy will form hard carbides, which will cause abrasive wear and reduce the machinability.

The titanium alloy specification required for nuclear submarines is titanium 64, and the grade requirements are very high.

At present, the titanium alloy processing technology of Lao Maozi in the world is relatively advanced.

Even the United States, Dongying, and Germany cannot be compared with Lao Maozi. So, Lao Maozi used to build several titanium alloy nuclear submarines.

Until now, these titanium alloy nuclear submarines are Lao Maozi's secret weapons, and they are never easy to show.

Even if the Typhoon class is pulled out for advertising, these titanium alloy nuclear submarines must be hidden.

The Americans also want to build titanium submarines. It's a pity that the processing technology is not up to par.

Of course, these are all digressions.

For the time being, it is not in Wang Buan's consideration.

For Sheng Huainan, just ignore it.

"Ready!"

"Reload!"

The test-firing officer issued a verbal order.

A heavy shell was lifted by four people and stuffed into the chamber.

A 255 mm caliber shell weighs more than 270 kilograms, and four people must work together to lift the shell smoothly.

In fact, even if it is operated by four people, it is very exhausting. The requirements for arm strength are very high.

It must also be the use of specially tailored clippers.

The PLZ255 super-heavy gun is not self-propelled. It's drag-and-drop.

Its barrel was too long for the self-propelled to be balanced.

Only the ancient towed type can be satisfied.

However, the PLZ255 itself weighs less than eight tons.

Relatively speaking, this weight is still very light. At least lighter than American-made 240mm howitzers.

American-made M1 type 240-mm howitzer with a total weight of up to 22 tons. The maximum range is only 23 km!

With a weight of eight tons, the average road is passable. There are no barriers.

"Let's go!"

"Let's go!"

Shells were stuffed into the chamber.

Subsequently, piece after piece of propellant was stuffed in.

This propellant is a big highlight. It's very generous.

The weight of each propellant pack is one hundred kilograms. It also requires four people to operate. It's still a bit difficult for a person to pick it up.

At its most, it can fit five propellant packets. That is, 500 kilograms of propellant.

The propellant of ordinary artillery must not have such a terrifying weight. Up to a few tens of kilograms. It will not exceed a hundred kilograms.

Why do you use such a large amount of propellant? 500 kilograms?

Of course, it's about the maximum range.

How can a distance of 130 km be played without a propellant of a super-perverted component?

In fact, there is no upper limit to the amount of propellant. There is no problem in making thousands of kilograms. The key is that the barrel and chamber are able to withstand it.

If the weight of the propellant is too large for the barrel to bear, there will be an explosion.

Even if the bore is not blown up, it will greatly shorten the life of the barrel.

The range of the PLZ45 self-propelled gun is not particularly long.

The firing range of the American-made M1 240mm howitzer is only a little more than 20 kilometers.

The main reason is also the problem of the propellant.

Can't hold too much propellant.

Otherwise, it will blow up.

Only Wang Buan is not afraid.

"Whatever you want!"

"You can put as much as you want. ”

Wang Buan said very happily, "Five hundred kilograms, five thousand kilograms, no problem!"

Of course, Chai Lufeng couldn't take his words seriously.

Really stuffed with a few thousand kilograms of propellant?

Others will think of him as crazy.

It doesn't matter if Wang Buan is crazy. He Chai Lufeng didn't want to be a madman.

In the end, the study decided that the shell was 270 kg. The weight of the propellant is 500 kg. The two are in a one-to-two relationship.

This ratio can be regarded as a strange precedent in the field of artillery.

It is estimated that others dare not imitate it.

Why?

100% explosive!

The enemy didn't blow it up, he blew himself up first.

"Let's go!"

"Click!"

A dull sound came.

The buckle fell, and the chamber of the cannon was tightly sealed.

"Launch. ”

"Boom!"

The test firing personnel pull the rope.

The whole ground seemed to shake violently.

The 255 mm cannon was ejected from the chamber, and the power was too strong.

Previously, those large-caliber naval guns, when fired, were even able to form a hurricane on the muzzle.

The hurricane spreads in all directions, sweeping everyone nearby into the sea.

During World War II, such a tragedy occurred on the battleship Yamato in Toei.

A single salvo of heavy guns with a caliber of 460 mm swept hundreds of sailors into the sea, leaving no bones left.

The caliber is 255 mm, which is completely different from the caliber 460 mm.

However, the muzzle hurricane that broke out of PLZ255 is also very terrifying.

Around the entire artillery position, a cloud of dust was flying.

Covering the sky and the sun, the sun and the moon have no light.

Wang Buan must cover his mouth and nose with a handkerchief.

Otherwise, as long as you want to breathe, whether it is through your nostrils or mouth, you will inhale a lot of dust.

After a full minute, the dust did not dissipate at all.

Wang Buan shook his head and retreated again and again.

If he continues like this, he will suffocate.

At this time, the test firing personnel had already begun preparations for the second round.

Frankly, the PLZ255 heavy gun was slow to fire. The theoretical rate of fire was only about three rounds per minute.

If the gunners are well-trained and skillful in cooperation, the speed can be increased to four rounds per minute. However, this is already the limit. If you want to continue to increase your speed, you can't.

This is due to the drawbacks of large-caliber artillery. It's just that the launch speed is too slow. This is true even with an automatic loader.

Of course, for super-caliber heavy artillery, the rate of fire is not a problem.

The key is the hit rate, but also the lethality.

Video came from afar.

Shells fell.

"Boom!"

"Whoa!"

The entire surface of the water seemed to be boiling.

The shells directly set off a column of water more than thirty meters high.

A full 275 kilogram shell! The warhead charge is more than 200 kilograms. Its explosive power can be imagined.

"Whew!"

"Whoa!"

Suddenly, the unexpected happened.

On the surface of the sea, an octopus suddenly sprang out.

It frantically swung its tentacles, as if to express something. Soon after, it slowly sank again.

"Observation Point, what's going on over there?"

"Observation Point, what special circumstances have you found over there?"

"Observation Post Report Launch Point! There's a huge octopus that has been blown up here. ”

"A super-massive octopus?"

"Look ......"

Boy.

Sure enough, it's a super huge octopus.

Its body is fifteen meters in size. For an octopus, this is a terrifying size.

The point is, it also has a lot of tentacles.

The longest tentacle is even more than fifty meters.

"Oh my God! It can't be a deep-sea monster that has been blown up, right? Such a big octopus!"

"I don't know, who of you can be sure?"

"There's no way to be sure ......"

Everyone was amazed and delighted.

This sea test launch is really tough!

The lethality of shells with a caliber of 255 mm is indeed not covered. After all, it's a 200-kilogram high-explosive charge.

Such a large octopus was blown to death, let alone an ordinary fish.

"Good! good!"

"Great! Great!"

Tau was very satisfied.

That's what he wants.

All he wanted was to be able to blow up these damn octopuses.

The coast of South Africa is now occupied by these varieties of octopus. Somehow had to be found to eliminate them.

These heavy guns with a caliber of 255 mm are exactly what meets this need.

Just bombard the sea indiscriminately.

From an economic point of view, it is definitely more cost-effective than flying an airplane.

A 500-kilogram bomb costs tens of thousands of dollars. The price-performance ratio is definitely not as good as the 255 mm shell.

"Boom!"

"Whoa!"

Artillery test firing continues.

One shell after another fell into the sea.

Countless columns of water were tossed up. It's a spectacle.

Accidentally, several mutant octopuses were blown up. They became the best advertisement for the PLZ255 heavy gun.

However, Tau, Mobati and others seem to be unsatisfied.

"Mr. Wang, is there anything further afield?" said Tau.

"Mr. Wang, is there a bigger caliber?" asked Mobarty.

"Do you need a longer range?a larger caliber?" Chai Lufeng said calmly, "How big do you want?"

"How big can you produce?" said Tawu, eager to try.

Chai Lufeng turned his head to look at Wang Buan.

This question can only be answered by Wang Buan.

The barrel is the most critical component. The range and caliber all depend on the barrel!

So, how big can Wang Buan make the barrel of?

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Chapter 633: A Bigger Caliber