In the evening of this day, Ha Laocai had already boiled out the crude nitrate, and as long as he boiled it again tomorrow, he could get the net nitrate that could be used. Pen | fun | pavilion www. ｂｉｑｕｇｅ。 ｉｎｆｏ

I couldn't wait for the sun to fall, so I called Yang Liu to bring the three-eyed gun and wanted to try it.

In an open space, Sun Yi took the three-eyed gun in Yang Liu's hand.

The three-eyed gun is basically a five- or six-foot-long wooden stick, with an iron spear tip at one end and three barrels at the other. It is made of iron, and the surface is pockmarked and pockled, and it is a foot and a half long. The whole gun is made up of three iron pipes with three iron hoops on the outside. From the mouth of the gun, it looks like a pig's nose with three nostrils. The iron hoop at the mouth of the gun is thick, like the nose of a pig turned out. The hole is large on the outside and small on the inside, like three nostrils. Sun Yi touched it with his fingers, and the inside of his nostrils was relatively smooth. At the rear end of the iron guns, a through hole is drilled into each gun pipe to the outside. The three barrels are combined at the end and transition into an iron sleeve, which is fixed to a wooden stick.

"How far can this thing hit?" Sun Yi asked.

"If you load lead, it is estimated that you will take 30 steps, and if you load iron sand, you will be closer, and you can hit about 10 steps." Yang Liu replied.

Thirty steps is also one hundred and fifty feet, which is equivalent to fifty meters in the later life, and is the same as a bow and arrow.

"Not bad!" Sun Yi praised.

Yang Liu hurriedly explained, "Master doesn't know, these three-eyed guns with lead are not accurate at all!" It is estimated that you can hit it in 50 steps, but I don't know where it will go. The border army said that this guy couldn't even hit the rabbit under his nose. ”

Sun Yi looked at the "pig nostrils", but no, the axes of the three nostrils were not parallel, and each of them stretched out slightly like a trumpet flower, and the diameter of the largest nostril and the smallest nostril could be separated by two millimeters.

Yang Liu continued, "If these three-eyed guns are loaded with lead, it is best to use them on the city wall, and a row of people will be angry at the same time, so that they can have an accurate head." ”

The famous Three-Eyed Sun Yi has known it for a long time. It is stated that the Northern Army was willing to make the Three-Eyed Gun, and the Southern Army was willing to make the Bird Gun.

Sun Yi asked Yang Liu: "Is the three-eyed gun good?" ”

Yang Liu replied, "The border army brothers are willing to use three-eyed guns. Sturdy and durable, it can be far and near. Bomb from afar, smash at close, what the Tartar is most afraid of is the three-eyed gun. The brothers in the border army were willing to fill the gun with more gunpowder and more loose children, and when they reached the distance, they bombarded a large area, and they didn't even need to aim. Every time the Tartars were on the side, when they saw the three-eyed gun up, they were so frightened that they lay on the ground and didn't dare to get up, and they dared to get up after three bombardments. Later, the border army put a few hemp thunderbolts before releasing them, and the Tartars hit their faces together! That guy is so enjoyable. If you still can't hit the three guns, you will immediately use the guns as a stick, no matter what armor this guy wears, as long as you pick it up, it will be over. ”

Sun Yi imagined it in his heart, if you want to talk about melee combat in this era, there is really no opponent with a three-eyed gun within a dozen steps.

Sun Yi asked again, "Are there any shortcomings of the three-eyed gun?" ”

Yang Liu immediately replied: "It's too troublesome to ignite, and you have to wait for a while to get angry when you light the fire, and the timing is not good." ”

When Sun Yi learned about the Three-Eyed Gun from Yang Liu, he was squatting on the ground at the end of the day, putting the wet coarse nitrate on a piece of tile and drying it over the fire.

When the nitrate was dry, the sun fell and the prepared sulfur and willow charcoal were taken out, and the three were carefully ground and mixed into black powder.

Sun Yi noticed that the ratio of gunpowder in the sunset was not the legendary 75:10:15.

When the sun fell, he poured gunpowder into one of the barrels of the three-eyed gun, tamped it, and instead of putting lead seeds, he stuffed some pieces of paper.

The three-eyed gun was raised high, and the sun fell and ignited the line of fire.

With a "boom", the confetti flew for a day.

Looking at the confetti in the sky, the sun fell and smiled like a doll, "I'm not afraid now." ”

The stuffy man asked the sunfall: "Which one is better than your original nitrate?" ”

The sun fell and replied, "Not much." ”

The current nitrate is only crude and should contain a lot of impurities. After refining it again or twice, Sun Yi was confident that he would get nitrate that was purer than anyone in the world at this time.

The stuffy egg pouted that the sun was falling, "Put your original treasure nitrate in your private collection, let's compare which one is loud!" ”

The sun did save a little bit of the previous nitrate, just a small bag, and put a three, five-gun amount.

At this time, the sun fell and did not shirk, took out the nitrate bag, dug out some and put it on the tiles and baked it.

The stuffy man asked the sun: "Your nitrate is not freshly refined, why do you have to bake it?" ”

The sun is in a good mood, and it is rare to explain carefully to the stuffy egg: "The nitrate is too easy to absorb water, and it will get damp after a long time." Therefore, the nitrate in the army is all freshly used and baked. When baking, you can't see ironware, so you have to take a tile or porcelain jar. ”

The chemical composition of nitrate used by the Ming Dynasty army was sodium nitrate. One of the problems with sodium nitrate is that it is too easy to absorb water and get wet, so it must be dried before each use.

Sun Yi now has potassium salt, and theoretically converts sodium nitrate into potassium nitrate, which can avoid the water absorption of this nitrate. But Sun Yi didn't plan to do anything.

There are two reasons, the first is that the current production of potash is also very limited, and Sun Yi believes that it is more important to use potash as a fertilizer to increase grain production. The second is to avoid the water absorption of nitrate, and the potassium nitrate made must be of very high purity.

When the nitrate was baked, the sun fell and gunpowder began to be mixed again, and the ratio of gunpowder was still not the legendary 75:10:15.

Sun Yi knew that the border army was fiddling with the three-eyed guns every day, and they were the most proficient in how to dispense medicine, so he asked: "The sun is falling, the gunpowder you prepare is different from the ratio I know, do you have anything special to pay attention to?" ”

I was very happy to be able to explain to Ye, "Master, this gunpowder is all based on nitrate and sulfur, nitrate to yin, sulfur to yang." The nitrate is mainly straight, and the direct hitter is nine and one is sulfur. Sulfurous main horizontal, critter nitrate seven and sulfur three. The bird gun is long and thin, and it is necessary to use direct medicine, and the nitrate should be put more, and the three-eyed gun is short and thick, and the horizontal medicine should be used, and the sulfur should be put more. As for all kinds of cannons, the amount of nitrate and sulfur should be measured according to the temper of the cannon body. ”

Sun Yi understood.

The textbook ratio of black powder is 75:10:15, which is equivalent to nitrate eighty percent eight sulfur and one into two, which belongs to the "straight medicine" in the mouth of the sunset.

Modern black powder is mainly used in muskets and artillery, and these guns have a thin diameter, a long barrel, and a long time to advance the projectile, so it needs black powder to react fully and produce gases with maximum efficiency.

The three-eyed gun belongs to a short and thick alternative, it does not pursue a complete reaction of black powder, but produces the most gas in the shortest time, so it is necessary to use explosive "horizontal medicine".

The stuffy man listened to the instructions for preparing gunpowder in the sunset, and made a clever suggestion: "You are too troublesome, I will teach you a trick when I am hungry, you can prepare the horizontal gunpowder for the three-eyed gun in advance, and you can use it directly when you are in a war." No need to match it now! ”

The sun fell and said happily: "Okay, before the next battle, I specially asked you to bake the gunpowder for us." You have to be careful, a little spark, just bang at once, smoke you black! ”

The stuffy guy was also happy.

This time, as the sun set and lit the line of fire, the three-eyed gun let out a roar, and the sound was noticeably louder than the first one.

Sun Yi was interested, and he released the third gun.

However, Sun Yi deliberately chose a "direct medicine" ratio of 75:10:15.

As a result of the test, the gunpowder of the third gun was far less powerful than that of the first gun.

After three rings, the people of the Ironwood camp knew that there was gunpowder in the camp.