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"By the way, is this the only piece of equipment we have?" Qin Zhenhua asked tentatively, "It should be more than that, right?" ”

Although it has not been officially put forward yet, the grapevine has long come out, and the big guys are working hard, and the second machine factory is also one of the best military factories.

It is estimated that there will be seven or eight projects that can be put on the front and back, or even ten, as for how many can be selected, of course, the Ministry of Hope has been selected.

The first machine factory is the boss, and the other factories are not to be outdone, and there must be other factories' specialty products, and the second machine factory is making artillery, and making artillery is the main business, do they have any new equipment to take out to participate in the military parade?

"Of course." Xie Huimin said: "Our development is naturally a big guy. ”

Big? Qin Zhenhua asked curiously, "How big?" ”

"It's bigger than the ones in active service."

Bigger than the active ones? The largest in service should be the 152mm howitzer, right? If it is larger than this 152 mm, then what is it?

A supercannon with a caliber of more than two hundred millimeters? Impossible, there is no such project in China, and after a little thought in his mind, Qin Zhenhua reacted: "It's just a few millimeters bigger, right?" ”

A few millimeters larger is also bigger, this is how the British played with the power of artillery export at the beginning, and now, it is estimated that it is still like this.

Sure enough, as soon as Qin Zhenhua said this, Xie Huimin nodded: "That's right, we have almost made a sample cannon, 155 mm plus howitzer!" ”

The military parade just completed last year was a 152-mm howitzer, which is also a commonly used caliber in China, while in the West, it was slightly larger, with a 155-mm caliber.

At the same time, there was a combination of cannon and howitzer.

The main difference between these two types of guns is the difference between the barrel and the caliber. The howitzer barrel and caliber are relatively small, generally 20 to 30 times the caliber. And the cannon barrel is longer than 40 times the caliber.

This has caused the difference in the way the two fight, the howitzer's barrel is short, so it leads to its small muzzle velocity, in order to launch far, the elevation angle is generally pulled very large, so that the trajectory is more curved, and the barrel of the cannon is long, so that the muzzle velocity of the cannonball is large, the firing range is long, and it can be shot directly aimed.

The two were initially different, but now, they have been combined, the howitzer trajectory is curved, which leads to inconvenient aiming, the need for complex artillery calibration, but at the same time, because it is a curved fire, it is possible to hit the enemy behind the bunker, and at the same time it is possible to carry out long-range over-the-horizon strikes on the enemy's rear positions.

The trajectory of the cannon is straight, and it can be directly aimed at a single target to bombard, so the tank gun with high bore pressure used in the tank, if it is classified, actually belongs to the sequence of cannons.

Both guns had their own advantages and disadvantages, and after the end of World War II, the functions of the two were combined and turned into a weapon of destruction. This is the cannon howitzer, or even the cannon howitzer.

In China, since the founding of the People's Republic of China, Soviet technology has been introduced, so what has been produced is the Soviet series of howitzers, with a caliber of 130 mm and 152 mm.

The Soviet Union was artillery, so in the beginning of time, the Soviets' suppression artillery had an advantage in range and power, but until the late sixties, NATO came up with a 39-fold 155-mm howitzer, with a range of 22 kilometers for launching ordinary shells and 30 kilometers for launching rocket extended-range grenades, not only for a long range, but also for a projectile weighing five kilograms.

In this way, the West has begun to gain an overwhelming advantage again.

By the time the Soviets marched forward and developed the second generation of 152 mm guns, namely the 2A36 152 mm cannon and the 2A65 152 mm howitzer, the West had already begun to have a better 52/54 caliber 155 mm howitzer.

In fact, the difference in caliber is only three millimeters, not particularly much, to say that the gap in firepower, naturally mainly because of the gap between the two sides in metallurgy and other basic technologies, the West's electroslag remelting steel and other technologies have long been perfected, with advanced cannon steel, withstand greater chamber pressure, load more propellant, is such a process. At the same time, it is also a performance advantage achieved by Western countries after a large amount of investment in the technical fields of howitzers, such as diameter, body tube, ammunition, sighting, and chassis.

And what about domestic?

The country, of course, can use the existing technologies to improve the 152-mm howitzer, but in this era, the country needs to go its own way.

How to choose the caliber of the next generation of artillery? In this special period of the 80s, it was very marketable to move closer to the West.

After all, the overall advantage of the West is still obvious, and now the relationship with the Soviet Union has not dissolved, and if the country wants to modernize artillery, of course, it must learn from the West, is it necessary to change it back to 152 mm in order to take care of itself?

On the other hand, of course, it is for the sake of export, now, the domestic economy is developing rapidly, the army is patient, and the military industrial enterprises are racking their brains to sell their products, and in such a big environment, the new generation of caliber choice 155 mm, that is, let it be, sell, it must be 155 mm caliber artillery more marketable.

Even if the target country has another 152 mm ammunition stockpile, as long as the cartridge is the same, it can be fired from the 155 mm barrel with a cartridge belt.

"However, it is not easy to import this technology from the West, right?" Qin Zhenhua asked.

The West has opened up to itself, but it is definitely not opening the door, at most it is just revealing a crack in the door, and the most advanced things of others are absolutely unwilling to be taken out, and those that can be sent over are all backward generations.

It is not easy for the Chinese side to introduce the most advanced 155 mm howitzer technology.

Xie Huimin smiled: "Yes, it's not easy, this matter is thanks to the push." ”

I? Have I ever done such a thing? Qin Zhenhua touched his nose a little strangely, good things and bad things, are they all our own?

"Do you remember when we went abroad for the first time, went to the West, in order to introduce advanced technology, and then went to Austria?" Xie Huimin asked Qin Zhenhua.

Of course, we know that the technology of electroslag remelting steel began to be talked about at that time, and Steyr Automobile was also talked about at that time.

"Actually, after we passed at that time, we did something more secretive." Xie Huimin said: "Now, this matter can be decrypted, we met Dr. Bull at that time!" ”