Super military empire

(Greatly add 56/100 for liwers)

"Have you studied this? And also conducted experiments?" Liu Yijiu was surprised.

This has proved that his work over the years has not been wasted.

Factory 2983, after having the foundation, the development trajectory is completely developed in the direction that technology can support.

Who said that the Chinese are not strong in design ability?That's because the foundation is not enough.

It has been developed abroad for hundreds of years, but how long is it in China?

"Yes, the samples are still in our warehouse. The project is temporarily abandoned. If the main part is made of high-strength gun steel, and the bracket and auxiliary parts are made of light-weight aluminum alloy, it will make top-heavy and have a serious impact. To the shooting accuracy. If the main body is made of titanium alloy or super aluminum alloy, the high temperature and high pressure generated in the barrel when the shell is fired will quickly deform the barrel..." Tian Deming explained to Liu Yijiu.

According to this situation, such problems will indeed arise.

Although domestic titanium alloys and super hard aluminum alloys are not much worse than foreign ones, they have developed rapidly in the field of materials research after Liu Yijiu entered the Dabashan base of the Ninth Academy.

The hardness of titanium alloy is indeed relatively high, but the toughness is also high. Relatively speaking, the hardness and strength of this ultra-light material is not as good as super-hard gun steel in some aspects, especially in gun steel used in China. A lot of rare earth elements were added under Liu Yijiu's interference to make the performance even more outstanding.

After heat treatment, the mechanical and physical properties are very good whether it is hardness, wear resistance, toughness and other aspects.

The only bad thing is that the weight is too heavy.

If the density is high, the weight will naturally increase.

"Take me to see." Liu Yijiu decided that he should go and see this gun.

If the design is reasonable, as long as the material problem is solved, you will soon be able to have a flying cannon.

The people at the gun factory are naturally willing to take Director Liu to see their super-era projects.Without saying much, a group of people headed towards the factory warehouse of the laboratory.

Along the way, Liu Yijiu kept introducing the various technical characteristics of their ultralight heavy artillery.

"The gun frame is h-shaped with front support, the cradle and the anti-recoil device are integrated, which is conducive to weight reduction. The barrel of the artillery should be 39 times the caliber. It can reach 5 rounds per minute, and 2 rounds per minute for continuous shooting." Tian Deming introduced the design to Liu Yijiu."The h-shaped gun mount can ensure that it will not roll over under the huge recoil when the cannon is fired. At the same time, the bottom is attached to the ground, so that the recoil is directly transmitted to the ground... And the theme part, we use aluminum alloy, but also useful Titanium alloy. In the early test firing, the effect is very good. If you continue to fire for ten minutes, the temperature inside the barrel will rise rapidly, causing the barrel to deform. After testing, the barrel of titanium alloy is better than aluminum. The alloy barrel has better performance..."

Liu Yijiu sounded a little frightened.

This design, how it sounds more and more like the ah-4 155mm ultralight howitzer that was only unveiled in China in 2014!

You know, this howitzer is the first ultra-light howitzer that can fly in China. The weight of the whole gun is only 3.5-3.8 tons, which is similar to the American m777 artillery. Many people even guess that this is a fake American m777. artillery.

Liu Yijiu is no different.

After all, this thing is too similar, even combat performance and so on.

But never thought that in this era, China actually made this thing before the United States.

In the warehouse, Liu Yijiu was completely shocked when he saw the three solitary guns unfolded in full form and the gun barrels were raised high.

Just a little bit, I exclaimed ah-4!

Really h-shaped front support, the chassis is attached to the ground, there is no huge support for counterweight like the drag heavy gun, and even the entire gun body has become more compact.

"For this one, the barrel is made of super hard gun steel with rare earth elements added, and the other brackets are made of aluminum alloy, etc. During the bombardment, the center of gravity changes drastically due to recoil force, so we have to increase the breeding and weight It’s not too much..."

"For this one, the barrel is made of titanium alloy. The overall gun frame is made of super-duralumin alloy, which reduces its weight and can transmit recoil to the ground. It will start to deform..."

"For this one, the barrel is made of super-hard aluminum alloy, and the whole is made of aluminum alloy. A total of 60 rounds were tested, and the entire barrel was scrapped..."

Pointing to the three heavy cannons neatly arranged in the warehouse, Tian Deming said to Liu Yijiu.

Here, all of them are the supply guns they researched. These guns are completely different from other 155 howitzer cannons, but the barrels are also hideous.39 times the body tube, very long.

"In other words, the current structural design is reasonable?" Although I was sure that the structure of this design is absolutely reasonable, Liu Yijiu still asked.

This is definitely the design of the m777 and the domestic ah-4 ultralight 155mm howitzer!

Even if there are differences, the differences will never be small.

The gun mount that supports the entire gun, when folded, is the frame on which the gun moves, with wheels on it.Once unfolded, it became a carriage supporting the center of gravity of the heavy artillery.

"Indeed, our structure is reasonable. This has been improved many times. Of course, there may be a more reasonable design, but we don't have the funds and energy to study at present. The scientific research tasks of the entire factory are very heavy... "Tian Deming nodded.

"If a titanium alloy is used for the support, should the barrel be made of gun steel? How much can the weight be controlled?"

"Seven tons. This is our first gun. The accuracy is very poor, unless we continue to extend the bracket..." Without any thought, Tian Deming answered Liu Yijiu's question.

"Are all titanium alloys used? The best titanium alloys." Liu Yijiu had a headache.

This will speed up the research process a lot. The problem is the current situation. It is difficult to solve the material problem.

Materials are the most fundamental factor restricting the development of all technologies.

He feels that the current domestic titanium alloy materials have sufficient strength.

However, it now appears that the use of titanium alloy for the barrel is clearly not enough.

This is really too nonsense, not to mention the difficulty of processing. It is just that when the barrel pressure and temperature deform the titanium alloy when the barrel made of titanium alloy is used for saturated shelling, it is a bit of a headache.

"That we considered, there is no problem. The life of the barrel will not exceed two hundred rounds, and the cost will exceed ten million..." Lu Ruixiang gritted his teeth and said.

The cost of a heavy artillery exceeds ten million, can the artillery afford it?

The corners of Liu Yijiu's mouth twitched.

However, he was a little disbelief. According to the current situation, the cost price of the top domestic titanium alloy is only more than 700 kilograms, which is almost 700,000 per ton.The gun weighs four tons, which is less than three million.But when I think of the scraps cut off during the machining process, and then consider the cost of the machining, there are actually some reservations about the ten million guns.

"If the barrel and the main body of the support are made of titanium alloy, and other non-core components are made of super hard aluminum alloy, can this cost be reduced?"

"Yes, the cost can be reduced to less than five million, but..."

Obviously, this design was unsuccessful.

There is a kind of gun next to it.

"This kind of cost is the lowest, but compared to the domestic 155 guns, the quality is only one-third, and the range and accuracy are even worse. The price is more than five times. It is difficult for the military to bear such a price. Even if it can be airlifted and airdropped, it is the same."

"What if graphene is added to the barrel of this gun? The outside is made of aluminum alloy barrels, and the brackets are made of titanium alloy..." Liu Yijiu asked Tian Deming with gritted teeth.

At present, if we want to make this kind of ultra-light cannon, obviously the material is still not up to the 21st century.

Then, we can only think of a solution from graphene.

The strength of graphene is far better than that of titanium alloy.

This Ninth Academy should be able to solve it with ideas and solutions.The weight of this material is even lighter than titanium alloy.

If you make a graphene lining on the inside, use super hard aluminum alloy on the outside, and apply a layer of graphene material on the outermost layer, and spray paint, no one can know what the material is.

In particular, this type of gun is basically impossible to export.

Unless the material is developed, the barrel is made of titanium alloy or aluminum alloy, or the barrel of super hard gun steel is used directly, it is possible to export.

"What material is that?" Hearing Liu Yijiu whispering, apparently afraid of leaks, Tian Deming also asked him in a low voice, "If the hardness is stronger than the titanium alloy and the toughness is not so high, there should be no problem... …"

"Then you can only discuss with the comrades in the Ninth Hospital Base. I just think this is possible. Anyway, the factory is mainly production. You can discuss it with Chen Yang..." Liu Yijiu is here No more introduction to graphene.

The existence of this material is still an absolute military secret.

"Anyway, I hope I can get this gun out as soon as possible, and then maybe there is a place to help us conduct battlefield experiments. At the same time, we need to add digital fire control systems, automatic primer loading devices, auxiliary loader and other automated systems. This improves survivability, lethality and operational reliability, and provides light artillery with radius autonomy..."

As long as the titanium alloy barrel or aluminum alloy barrel is made, the total weight of this thing will not even exceed two tons!

Of course, if you use super hard gun steel, you have to work hard in the design.

Liu Yijiu studied artillery, but he studied electromagnetic artillery. Although they are all artillery, they are not the same principle at all...