"Aren't we using the latest type of composite armor? The defense is high, and the enemy's artillery can easily take out our tanks?" Zheng Yucheng asked Xie Kai with wide eyes.

For a while, Xie Kai and Qin Jinyuan both looked at each other and smiled bitterly, how did they answer?

Attacking the shield with the spear of the other, what is the answer, who knows?

"Okay, the Iraqis are waiting, and we will have to test the artillery to find out. This cannon was dragged out like this, and when it came to the artillery range for target shooting, how thick the homogeneous armor that our cannon could penetrate, and how thick the composite armor it could penetrate, there would be a conclusion over there. Xie Kai sighed.

No matter how ugly the gun is, it is impossible to install the tank turret when it is test-fired.

The pedestal, in particular, is fixed.

I'm afraid that this thing can resist it, don't have too much recoil at that time, and the base can't afford it.

The Iraqis waited to see the test firing of the sample gun, and they had no other preparations, so they just dragged the sample gun to the artillery field for test firing.

The composite armor model of the base has been out for a long time, and various tests have been carried out these days, and theoretical analysis has not been tested on which kind of composite armor has higher defensive power.

The penetration of the 105-mm rifled gun at the same distance, the muzzle velocity of the high-explosive projectile, armor-piercing projectile, armor-piercing projectile, full-charge anti-personnel blasting grenade and reduced-charge anti-personnel blasting grenade of the 125-mm tank gun must be determined by testing.

According to the previous plan, the live-fire test will continue once it is launched.

Up to now, the 541 tank base has delivered a total of 5 sample guns, and each sample gun, according to the experimental plan, must hit different shells until the barrel is scrapped.

For each shell, the initial velocity of the chamber, the chamber pressure in different states of the charge, and the ability of the barrel to withstand the chamber pressure in different states must be measured.

After obtaining these data, special improvements are carried out, whether it is further improved in materials, or there are problems in the processing technology that need to be improved, or problems in the internal machining accuracy of the barrel, etc., all need to be analyzed.

125-mm tank guns, five prototypes were produced, not a single shell has yet been fired.

Even the original 120-mm tank gun of the Z-122 tank project ended up with just over a hundred guns.

At first, the test launch had to be stopped because of material problems and processing technology problems.

Now no one can guarantee that new casting processes such as new tank gun steel, self-tightening process of body barrel, electroslag remelting technology, and even the chrome plating process and processing technology inside the barrel are also imported technology.

No one can guarantee how far it will go.

"Do you need a long time to prepare?" The Iraqis were a little dissatisfied with Zheng Yucheng and Xie Kai's communication with the artillery experts of the 359 project alone.

They were worried that the people of 404 had cheated them.

"General, in order to understand the actual situation, we have been conducting extreme environment tests before, the combat performance of a tank, the most important thing is the attack ability of the tank gun! The best defense is to attack, no matter how thick the defensive armor is, without strong attack power, it will eventually be besieged and destroyed by a bunch of backward tanks. Didn't the Tiger tank and the King Tiger tank, which Germany terrified the Allies back then, also be surrounded and annihilated by the Soviet T34 tank?" Xie Kai asked Issad, who questioned it.

Iraqis know about Soviet weaponry.

The Soviet idea of army building even influenced Iraq, otherwise, Saddam would not have ordered more than 2,000 Type 69 main battle tanks from China.

Quantity is far better than quality.

The Soviet army was able to drag down the German army that overthrew the whole of Europe back then, relying on numbers.

Whether it is the number of troops, or the number of weapons and equipment.

"That's true. Issad had to admit it.

"We don't need to prepare, whether it's shells for firing experiments, or homogeneous armor for testing penetration, it's ready. Not only do you need to experiment with tank guns, but you also have to test the defensive capabilities of composite armor!" Qin Jinyuan said to the Iraqis.

He is from Base 541 and is not a member of 404.

The Iraqis are noncommittal, and there is nothing to argue about this.

If the Chinese want them to see the offensive power and defensive power, they naturally need to conduct experiments.

"Just drag the tank gun to the shooting range?" Seeing that the Chinese directly added a flatbed cart or something under the tank gun, the Iraqis were a little puzzled, "Don't you need to install it on the tank for experiments?"

"General, we don't have a suitable tank in our country that can withstand the recoil of a 125 mm tank gun firing a fully charged shell! The 359 tank uses new technology and new materials to solve the recoil problem. Xie Kai explained.

Theoretically, there are no problems with tank guns.

Five sample guns, all pulled out for experiments.

Some guns have muzzle brakes installed on them, while others do not.

"There aren't a few countries that have muzzle brakes installed on their tank guns, right?" Harry Moisan asked Xie Kai, who clearly saw that two guns had muzzle brakes installed on them, "Although the muzzle brakes can absorb a large part of the recoil, they will also cause a lot of difficulties and affect the accuracy of shooting......

"That's true, it will even affect the separation of the tail stable shelling armor-piercing bullet from the butt......" Qin Jinyuan nodded, "Our current cannon has not yet been finalized, and we need to conduct experiments to obtain various parameters!"

In order to get more parameters, each cannon almost has some subtle differences.

In the course of the previous extreme temperature experiment, a large amount of data was obtained, and these data have subtle differences for the modification of the 125 mm tank gun, especially the aluminum alloy air interlayer thermal sheath installed in the middle part of the barrel, etc., almost the advanced technology used on the tank, and the 125 mm tank gun produced by the 541 gang 404 base can be seen on the shadow.

Xie Kai persuaded Mr. Zhu Yusheng to get technical support for the domestic third-generation tank project at the beginning of this project, and the technology of these artillery guns also paved the way for the domestic third-generation tank project.

Five guns, transported by liberated cars, were pulled to the artillery field, which was originally used for weapons tests.

On the way out, I encountered the construction site of the airport, where dozens of military excavators with 59 chassis leveled a large area of the valley floor, which was not very flat.

"Shouldn't these military excavators be delivered to the hydropower troops and the Iraqis?" Xie Kai asked Zheng Yucheng puzzled, looking at the dozens of excavators busy on the construction site.

"The Armed Police Hydropower Force, our infrastructure, are handed over to them for construction, and at the same time, their personnel are ......trained on our side," Wang Guilin explained.

Xie Kai usually pays little attention to these things.

The construction of the airport has been carried out for so long, and he has not come here to see it, and there is nothing to see, and everywhere is bare.

When Wang Guilin was talking about training, a flash of inspiration suddenly flashed in Xie Kai's mind, and he wanted to catch it, but he couldn't catch it at all.

"What do you think? This kind of cooperation is beneficial to both of us, after all, the current performance of our excavators requires a lot of use to draw conclusions. Wang Guilin thought that Xie Kai was worried about the impact on the relationship with the customer.

The construction of the 404 airport was contracted out.

The engineering regiment in the base had already been withdrawn when the various projects were evacuated.

"That's pretty good, if there's any problem, you can find it in the process of using it. Xie Kai nodded and said.

Didn't say anything more, but thought about the test firing of the 125-mm tank gun.

For Xie Kai, the effect achieved by the test firing of this gun seriously affected the progress of the entire tank project.

Any tank is often evaluated in terms of firepower, defensive capabilities, maneuverability, and the technology used above.

Test firing means whether the tank gun can be finalized, once the theoretical design data cannot be reached, these five sample guns are only experimental products, and they need to continue to be improved.

In this way, the progress of the entire project will be seriously affected.

"Are you worried about the experimental data of the tank gun?" Zheng Yucheng asked in a low voice when he saw Xie Kai looking at the tank gun sample gun in front of him dragged by the liberation car.

Xie Kai nodded.

"Rest assured, there are no problems, from the very beginning, our design has made use of a supercomputer for finite element analysis, and so far all the experimental parameters have exceeded the theoretical data. Qin Jinyuan comforted Xie Kai.

He himself was equally nervous.

In the 541 base, they were originally idle because of the lack of projects after the 541 base was converted to civilian protection, and with the 541 tank gun business, the entire 541 base artillery research team became busy again.

The scheme is in accordance with the design provided by 404, and a lot of analysis has been carried out at the same time, and the tank gun-related technology that has just been introduced abroad has been used.

"The attack ability of a tank gun is not only a cannon, but also a shell. Xie Kai spat out faintly.

The Iraqis were involved in the whole process of the experiment.

When the tank guns were transported to the test range, the shooting experiments were not carried out directly, but the tank guns were hoisted to specially prepared positions for installation by engineering vehicles.

The 125mm tank gun, when the gun is fired, produces a huge recoil force, if not fixed properly, will make the whole gun jump.

"The artillery is a completely new sample, and the shells are also newly produced!" Xie Kai is not worried, it is a fake.

There is no artillery of the same type in China, and the shells of tank guns are also jointly developed by the technical teams of 541 and 404, of course, the main source of technology is the 105 mm rifled gun ammunition sold to China by the British.

The installation was carried out quickly, several types of shells were placed not far behind the tank guns, from two to four thousand meters, with different types of targets, and more often homogeneous armor of different thicknesses.

Most of these targets have already been installed before.

Xie Kai looked at the target in the distance, and his thoughts were very complicated.