Bright Sword starts with the grenade flat.

Chapter 40 Modified grenade launcher.

Of course, this shaped armor-piercing grenade can not only deal with tanks, but also with bunkers like little devils.

Although the little devil's bunker is made of cement and blue bricks and can only protect against bullets and small-caliber mortars, not even the Type 92 infantry cannon, shaped-energy armor-piercing grenades can easily penetrate it.

Moreover, its high-temperature and high-speed metal jet is also a killer weapon for people in the bunker.

After all, a tank is just a smaller bunker.

The work in this arsenal is also an assembly line operation. The person in the first process is responsible for disassembling the collision fuse of the grenade, then the second process is responsible for pouring out the TNT gunpowder from the grenade, and then the third process is responsible for removing the bottom Fire primer.

After that, the fourth process is responsible for installing the shaped metal dome used to trigger the metal jet, and then filling it with TNT gunpowder again and putting it back together.

Therefore, the modification process of changing an anti-personnel grenade into a shaped armor-piercing projectile does not require any machine tool processing at all.

At most, it's just a matter of using a sand mold to cast the cone-shaped medical mask used for energy-concentrated armor-breaking, which takes some time and some copper.

And this sand mold casting can be done by rural handicraft workshops in the Pharaoh's Iron Kingdom, so why can't it be done by this arsenal?

After Liu Xiu taught the arsenal how to make shaped armor-piercing projectiles, he turned his attention to how to improve grenade launchers.

To reduce the recoil of the grenade, Liu Xiu could only use cotton pads to reduce the recoil. For example, air buffering and long-stroke barrel recoil were not possible at all after a few decades.

However, you can add a muzzle brake to the grenade, and use the high-pressure gas recoil principle generated by gunpowder to reduce the recoil of the grenade.

You must know that the muzzle brake used by the famous Barrett can effectively reduce the recoil force by 70%!
  As for the production of the muzzle brake, it is also very simple. The old method is to use a sand mold to cast it, and then use a machine tool to cut out the threads. Of course, the grenade barrel also needs to cut out the external threads at the muzzle.

As for this machine tool, it naturally belongs to the arsenal. After all, it is an arsenal and there are still one or two machine tools used for cutting threads. Otherwise, they would not be producing rifles.

Although it was only in early 1941 that the arsenal on the 8th Road was capable of producing rifles, it was just that due to the scarcity of machine tools and the lack of materials, the production quantity could not increase.

Only four to five hundred rifles can be produced per month, which is naturally a drop in the bucket for the Eighth Route Army with hundreds of thousands of people. After all, even if it is produced in a year, it can only be used by four or five regiments.

Therefore, most of the weapons of the Eighth Route Army were obtained by capturing the little Japs, so the Little Japs liked to fight with bayonets, but the Eighth Route Army, who lacked weapons and ammunition, wished that the little Japs would fight them directly with bayonets!
  After all, no matter how powerful the little devil's bayonet is, it can be more powerful than the red tassel gun! Besides, even if one can't fight, two can't fight!
  You must know that the total population of the little devils at this time is only more than 70 million, while our population is more than 400 million!

Not to mention two, even three little devils can't afford it.

Of course it would be best to die less, after all, they are all his compatriots Liu Xiu! Maybe they were still the same family five hundred years ago!

Since Liu Xiu traveled through time, he naturally had to use the knowledge in his mind to make some contributions to his compatriots.

It's just that the system that Liu Xiu came from through time travel is not powerful. Other time travelers use a system that kills enemies and explodes equipment. Killing little devils is just like playing a game.

His savior system has only given him a bonus that doubles his attributes, which is really incompetent.

After Liu Xiu made the grenade brake, he also found someone to try it. The recoil was reduced by about half, and his body did not sway when firing.

In addition to adding a muzzle brake to the grenade, Liu Xiuze also put a rear sight on the grenade. After all, even though it is said that the grenade can be leveled, it is not really leveled. With the muzzle velocity of the grenade cannon's shell being 100 meters per second, if it were really leveled, it would have to fall into the soil after flying fifty meters. .

Because according to the formula of gravity acceleration, after the grenade flies horizontally and leaves the barrel, it will fall under the influence of gravity. If it flies fifty meters, the drop height of the grenade will have reached 1.25 meters.

At such a height, it would be fine even if it didn't fall into the soil. It would be even worse if it was fired while standing in a trench. It probably wouldn't even be able to fly thirty meters.

As for what a sight sight is, in layman's terms, it means that it can adjust the aiming angle according to the distance. In the Liangjian TV series, there is an episode where Li Yunlong and Zhao Gang bet whether Zhao Gang can hit the kid setting up the cannon from 500 meters away, and Zhao Gang also gave Li Yunlong showed his hand.

He immediately took a 38-meter rifle, adjusted the sight on it to the 500-meter mark, and killed the little Japs setting up the gun with one shot.

The thing that Zhao Gang put up and adjusted was the ruler sight. After all, although the bullet is fast, it will still be affected by gravity, and it will fall when it is far away.

So the weapons designer came up with such a scope, using the principle of three points and one line, and then measured how much the bullet dropped at a certain distance, and then made a scale on it, so that the shooter no longer had to rely on feeling to shoot. .

This method of shooting is much faster than placing the grenade on the ground and then finding the angle and aiming based on feeling.

Later, the M79 grenade launcher, a shoulder-fired grenade launcher developed by the US army, used the sighting method.

Shooting over the shoulder in the station is much more convenient than shooting on the ground. It can be fired and moved away easily, although the transfer of the little devil's grenade is already much more convenient than that of an ordinary mortar.

Unlike ordinary mortars, which require a mortar base to be placed first, you can place it on the ground and aim it before shooting.

But it is far behind when compared with the US Army's M79 grenade launcher.

In fact, after Liu Xiu's modification, the grenade launcher of the Japs was no different from the M79 grenade launcher of the American army, and they could both be fired over the shoulder.

Even because the caliber is 79 mm, it is more powerful than the M grenade launcher.

Of course, Liu Xiu's major changes to the grenade were not afraid that the little devils would learn from it and cause trouble to the so-called Allies.

After all, there are only two main battlefields for the Little Devils. One is where Liu Xiu is, and the other is the battle with the Mi Army on the sea. When the Little Devils and the Mi Army fight on the sea, they use either aircraft carriers, battleships, or aircraft. .

You can't count on shaped armor-piercing bombs to hit battleships and aircraft carriers!
  Of course, if the little devil has some conscience and tells the country about the anti-tank grenade he got, he might be able to cause some trouble to the giant bear country.

Of course, it's just a little troublesome. After all, Liu Xiu has tested the penetrating power of shaped armor-piercing bullets in the arsenal. It's 7.5 centimeters, and it can only penetrate 7.5 centimeters at most.

It is much different from those anti-tank rocket launchers that are only ten or tens of centimeters long.

The armor thickness of tanks on the battlefield in Deguo is generally more than ten centimeters thick.

So this anti-tank grenade is specially used to deal with the tanks of the Japs.

PS: I have put the modification pictures of the grenade grenade in the book review area, so readers who want to complain about the unreasonableness should take a look at the modification pictures in the comment area first!
  Everything is based on reasonable and rigorous military technology, and will not be made up without purpose! Readers, you can question my plot, but please do not question my military knowledge. I am serious about military technology.

(End of this chapter)