Chapter 469: Divine Machine

The "Italian cannon" used a screw bolt.

The screw latch body is mounted on a latch fixed to the side of the gun tail and can be freely rotated when the latch is opened and closed.

The threaded surface of the latch is divided into even-numbered sections, and the threads are cut every other section.

The threads on the inner surface of the tail are treated in the same way, except that the section of the thread that is cut off is exactly staggered from the section of the thread that is cut off on the latch.

When the latch is closed, the thread on the latch body is the corresponding thread on the inner surface of the gun tail, and the teeth and reels are first meshed.

Then the latch shank can continue to move, at this time, the gear under the latch shank will drive the latch body to rotate in a circle, and the threads on the latch body and the gun tail will be tightened to each other.

This is the basic principle, and of course there are many accessories, such as a safety device that prevents the latch from turning back and opening in case of shelling; A device for the automatic reset of the mechanical firing pin to the firing state when the latch is closed; After the firing fails, the firing pin is manually reset to the firing state and fired again; and safety lock devices, etc.

As for the tight plug used at the bottom of the medicine bag, the observation equipment used for gun aiming, and other devices, that was a matter of much later.

Su You had only seen the shape of the Italian cannon in the Military Museum, so he could only roughly draw a shape for Shi Fu, then explain the principle of the cannon latch, and finally let him use his own brain.

And he picked soft persimmons and pinched them, and presided over the research and development of simple equipment - mortars and son-mother guns.

It's a lot simpler.

The barrel of the mortar is not very demanding, and it can be achieved with the already mature mast technology.

The guy made is still incomparable with later generations, although the barrel has been bored after being made, the concentricity can be guaranteed, but it is still much thicker, obviously it can only fire 50 mm shells, but the weight has reached the weight of the mortars that fired 80 mm shells in later generations - 130 catties.

Moreover, for the safety of the shooter, instead of relying on the mass of the projectile itself to make the bottom of the shell hit the firing pin at the bottom of the barrel, but relying on its own mass to slide to the bottom of the gun body, the shooter hiding behind the cover pulls the pull rope to release the firing pin and hit the bottom of the shell.

This is a design made by Su You to prevent the bombing of the bore from harming the shooter, which is not very confident in today's steel manufacturing technology.

As for the rest, it's about the same as later mortars.

The body of the projectile is a cast iron and lead closed air ring, and the bottom end of the tail pipe is made of an internal thread, which is loaded into the basic medicine tube and screwed with a primer. Several different muzzle velocities and ranges can be obtained by adjusting the number of additional packs.

The mother and son guns are actually the Franc machine guns introduced from abroad in the Ming Dynasty, the mother guns are slender and long, the caliber is small, and the guns are equipped with crosshairs and doors, which can aim and shoot at long-distance targets.

The rear part of the gun is thicker, and there are long holes and grooves to fill the guns.

The sub-guns are similar to artillery shells, each mother gun is equipped with nine sub-guns, which can be pre-loaded with ammunition for later use, and the mother guns are loaded and fired in turn during battle, thus increasing the firing speed.

However, because wrought iron was used instead of cast iron, the thickness of the pipe wall was much lower than that of the Furlong cannon, and the weight was reduced to 200 catties.

And due to the development of Meishan precision machine tools, although it is a split type, the sealing is much better than that of the Ming Dynasty Franc machine.

Unlike the Franc machine, there is also a spiral device at the tail of the gun, which can adjust the position of the bottom bracket of the barrel.

If it is rapid-fire, the bottom bracket is set back to facilitate the loading and unloading of the sub-gun.

If it is a slow fire, after the gun is installed, you can shake the disc, and the bottom bracket will hold the gun tight, so that the gun and the barrel are tightly combined, which can increase the air tightness and get a longer range.

In addition, the use of medicine bags close to the modern era, so the firing range is much farther than the Ming Dynasty Franco cannon, nine-foot-long son-mother gun, one pound of ammunition, one pound of medicine, when firing rapidly, it can attack targets at a distance of 400 meters, and when firing slowly, it can hit more than 1,000 meters away.

These two types of artillery, one is flat-firing firepower and the other is upward firing firepower, which fires flowering shells, Su You believes that it is enough.

Of course, this is only an experimental product, in addition to understanding the principle, it also needs a large amount of experimental data to support in order to achieve the best results.

Both of these are flexible and mobile offensive firepower, and Su You found it unpleasant, so he invented a third one.

Fortress guns, barrels three meters long, weighing one ton, caliber one hundred and fifty millimeters, shells one hundred and forty millimeters in diameter; The amount of gunpowder is nine catties, or four catties of nitrocellulose, and the shell weighs twenty catties, and when filling gunpowder, the effective firing range is 400 meters, and when loading nitrocellulose, the effective firing range is 600 meters!

In addition to being used as a fortress cannon with a fortress, the most important thing is that it can be installed on a giant ship in combination with a sub-mother gun and used as a naval weapon!

However, this is a front-loading gun, the rate of fire is very slow, and before the invention of the bolt of the rear-loading gun, it can only be played like this.

As for rockets or something, the accuracy is too poor, and large-scale coverage is to burn money, and you can't afford to burn it.

Chongyi is about to go crazy, the carriage ballista and porcelain bullets have already made him feel that he can set foot in Xixia to subdue Yanyun, and now that he has this, then count Liao Gaoli into it.

Su Youpao came up on the back of his head: "Arrogance! War is fought on national strength and logistics, otherwise it is to send people and equipment! ”

"Honestly give me the statistics of experimental data, the relationship between the proportion of charge and ammunition weight, the relationship between the proportion of body barrel and firepower, the design of the gun carriage, the design of the aiming device, the design of the control device, these are all handed over to you!"

"There are also tactics, how to use these things to cooperate with the existing army, complete rationing, transportation, fighting, this is also a topic."

"And then how many operators a gun is equipped with, how many horses are equipped with it, how much ammunition is there; A few guns can form a unit, and how many troops can be matched by one unit; How much is the maximum cluster reasonable, and how many guns are commanded by one commander......"

"How to observe the enemy's situation, how to transmit message parameters, how to improve combat efficiency, how to match ammunition varieties, all these must be studied! Things are not made for you to be fooled with! A set of tactics must be formed! ”

Chongyi raised his hand: "Then I'm going to do a lot of live shooting!" ”

Su You said: "It's up to you, but you must pay attention to safety, this is equivalent to sending a twenty-pound earth-shattering thunder hundreds of meters away, if it explodes, it is a very terrifying thing." ”

"Every time I test, give me an honest hiding behind a reinforced concrete bunker! Once I find out that I don't follow the test regulations, as long as I do it once, I will be disqualified from the experiment forever! Go back to Weizhou and practice bows and arrows with your brother! ”

Artillery is only the most important scientific research project of the Weizhou Military Industrial Test Site, in addition, firearms and individual explosives weapons are also the focus.

The problem of the long barrel has almost been solved by Shi Fu, who changed the shape of the barrel from a cylindrical shape to a regular hexagon, which solved the problem of machine tool clamping at once.

After this problem is solved, you can use a high manganese steel milling cutter to boring the soft iron, hook the rifling, and then make the barrel the outside and soft on the inside through carburizing and heat treatment, and the problem of the barrel is basically not big.

Instead, ammunition has become a bottleneck.

Like the brass shell bullet used for Shi Wei's runner to separate the propellant and the copper cap of the primer, the processing difficulty is too high and too expensive to produce in large quantities, so the rear-loading paper shell bullet needle has become the first choice for Su You.

The resulting product, with the exception of the hexagonal barrel, closely resembles the later Dreiser, plus a Mauser M1871 safe.

This is a rifle in the true sense of the word, with an empty gun weighing nine pounds, a gun length of one meter three, a barrel length of eight hundred millimeters, and four right-handed rifling.

Bullets are shelled with a paper cylinder, which combines a projectile, a propellant and a primer.

When loading, the bolt is used to push the bullet into the suffocation from behind, the bolt moves forward against the barrel, and the needle is kept at the rear by the trigger.

After pulling the trigger, the firing pin pops forward, pierces the paper shell, hits the primer, ignites the gunpowder, and shoots the projectile.

The use of black powder modified with potassium nitrate for gunpowder can greatly save costs, with an effective range of 300 to 800 meters.

It can be said that apart from the hellish lifespan, things are almost indistinguishable from the afterlife.

In order to increase the service life of the barrel, the warhead was forced to use flat-headed lead bullets, as well as some steel-core lead bullets, which were used for special purposes.

Now this robber is still being transformed, because it is a paper shell bullet, which will cause the gunpowder gas to escape from the contact between the bolt and the barrel, so that the bullet loses part of its kinetic energy.

In fact, it is not difficult to solve this problem in theory, the first is to use brass cartridge shells to make the barrel contact with the bullet closer, and the second is to let the bolt, barrel and bullet be wrapped so that the gas does not leak.

The initial test object looked like a strange iron rod lying horizontally on a weapon rack, and when the iron rod was actually able to shoot effectively, the core part was successfully developed, and then the attachment was attached.

It should be done to do addition to do addition, and it should be done to subtract and subtract.

For example, if the barrel is done well, in fact, there is no need to have the same thickness before and after, and the explosion mainly impacts the bottom of the barrel.

In other words, after the internal boring is done, the appearance can be polished to make it grow into a tapered barrel to reduce weight and adjust the center of gravity.

Another example is the design of sighting systems, bayonets, wooden handles and other supporting facilities.

But these are all later words, this magic gun, can cross the front-loading smoothbore gun, arquebus, flintlock pistol, rear flintlock pistol, like a shark step evolution in place, so that Su You is proud of Meishan's fifteen years of industrial science and technology achievements.

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