Prodigal Son of the Ming Dynasty

  Chapter 749 Eye-opening

  Just look at the 'thin' barrel and the barrel which is longer than ordinary artillery.

  In Zhang Mao's eyes, he was still suspicious.

   Can this thing be fried?

  Not afraid of bombing?

  He smiled and looked at Fang Jifan.

  Fang Jifan said: "Shibo, I don't know how far the artillery in the border town can shoot, and how accurate is it?"

   "This..." Zhang Mao only hesitated a little, and said, "It's probably two or three hundred feet. Accuracy...what is it?"

   Two or three hundred feet, this is too general.

  In fact, smoothbore artillery, especially the artillery with holes in the smoothbore, cannot be expected to have an accurate range. It depends entirely on luck.

  Fang Jifan nodded his head. This point is roughly consistent with the historical materials he knows. For quite a period of time, the artillery of the Ming Dynasty was dominated by tiger squatting cannons. The range was not long, and the accuracy... really depended on luck.

Later, when Westerners began to appear, and there were exchanges between the East and the West, the Hongyi cannon was introduced by the Ming army. This type of artillery has a long barrel, and the thickness of the tube wall gradually thickens from the muzzle to the tail, which is in line with the gunpowder The principle is that the chamber pressure changes from high to low during combustion; there are cylindrical lugs on both sides of the center of gravity of the gun body, and the gun can adjust the shooting angle based on this axis, and the range can be changed according to the amount of gunpowder; there are also front sights and rear sights. According to the parabola to calculate the trajectory, the accuracy is very high. And its most outstanding is the range. As a cannon, the Hongyi Cannon has a range of three hundred to five hundred feet.

  The blueprint provided by Fang Jifan is actually the style of the Hongyi cannon.

Its characteristic is that the barrel is long, but it is not as thick as a tiger crouching cannon. However, compared with the ordinary red cannon, it chooses to engrave a negative line in the barrel. This negative line is the rifling line. The Hongyi Cannon's range and accuracy are much stronger.

  Fang Jifan said with a smile: "Uncle Shi, look at the mountain on the opposite side."

As he said, he handed a binoculars to Zhang Mao. Zhang Mao looked at the top of the mountain from a distance, raised the binoculars, and saw that there was a large area of ​​trees on the opposite side of the mountain. In one area, the trees were all tied with red ropes. This area is several feet square, Zhang Mao frowned: "What are you doing?"

   "We want to attack those forests tied with red ropes." Zhu Hou beamed brightly.

  Zhang Mao was a little speechless. The opposite mountain was about seven or eight hundred feet away. How could he still hit the target at a distance of seven or eight hundred feet? are you crazy?

  Zhang Mao didn't believe it.

But in front of the prince, he didn't believe it, so he had to hold back. As a British man who played happily in the gun barrel when he was a child, Zhang Mao really knew artillery very well, so he could only laugh dryly: "This place is about eight miles away from me." More than a hundred steps...this...cough cough, His Royal Highness, you really have high ambitions."

  Only talking about high ambitions, in fact, means that the heart is as high as the sky, but... other things, of course, it is hard to say.

   "Lao Fang, let's open our eyes to Britain."

   "Okay." Fang Jifan nodded happily, and then said: "Your Highness, you reload."

  The cannonball was too heavy, and Fang Jifan's head hurt a little. This matter can only be done by Zhu Houzhao, who is in good health.

  Zhu Houzhao didn't say anything, he rolled up his long sleeves, tied them up, and screaming, he opened the wooden box beside him, revealing a row of cannonballs inside the box.

This cannonball is different from ordinary cannonballs. Fang Jifan called it flowering bombs. During the Hongzhi Dynasty, the cannonballs were still solid, but it was not until the Jiajing period, that is, decades later, that the Ming Dynasty began to invent the "poison fire fly", which is " "Poison Fire Fly" is the prototype of the flowering bomb, which contains "five taels of arsenic and sulfur poison".

Of course, Fang Jifan is a kind person. Although this kind of flowering ammunition has appeared for the first time, he did not fill the shells filled with gunpowder, filled with such wicked things as arsenic, sulfur, and poison. He ordered people to load steel balls, one hundred small steel **** in one shell.

  So, don't look at the shell as hollow, but in fact, it is extremely heavy.

  Fang Jifan was on the other side and began to load the gunpowder. He stuffed a pack of gunpowder through the muzzle, and then filled the gunpowder firmly with a long-handled cork.

   After that, Zhu Houzhao screamed, brought the shells, bared his teeth and cracked his eyes: "Get out of the way quickly." Then, he loaded the shells into the muzzle.

The inside of the gun barrel is very smooth, and because of the rifling, the accuracy of the shell must match the inner wall of the barrel. A long lead wire was reserved for this shell, and then it slipped into the barrel bottom of.

   Everything is done.

  Zhu Houzhao started to pick up the notebook.

  The style of this Hongyi cannon was originally a cannon, but now it was turned into a howitzer by Fang Jifan.

   But it doesn’t matter, as long as it is useful, he doesn’t like solid shells, he likes flowering ones, and a crackling one is good.

  Fang Jifan held the cannon barrel with his hand, and couldn't help feeling: "I'm so tired."

  Zhu Houzhao glared at Fang Jifan angrily, you are also tired as a gunpowder loader. What is that palace?

  He was too lazy to talk to Fang Jifan, but took out a notebook from his sleeve.

  After the accuracy was enhanced, Zhu Houzhao soon discovered during the test firing process that this new type of artillery is regular.

When the shell is fired, it has its trajectory, which is the principle of a parabola. Therefore, as long as the ear is used as the central axis, the shooting angle is adjusted, and the target is determined with the gate and front sight at the same time. After the shell is fired, the calculation of the trajectory is the final calculation. Find out where the shells landed.

  And this...it involves arithmetic.

  Of course, Fang Jifan also gave Zhu Houzhao some pointers, and Zhu Houzhao seemed to have begun to get the hang of it.

  Fang Jifan was about to command the gunners to calibrate the elevation angle and front sight of the same artillery. Zhu Houzhao waved his hand: "Come here, get the abacus!"

   "..."

  Zhang Mao looked at it, although he was quite organized, but...what the **** is the abacus, your family still needs to use the abacus to set off a firecracker?

Someone had already prepared the abacus. Zhu Houzhao was holding a charcoal pencil, lying on the ground with pouted buttocks very seriously, spread out the book, and compared the formulas he had shot before. Stretching out a pen, trying to calculate something, he muttered to himself: "Three three is nine, nine nine eighty one, eighty one..."

  This...this...Zhang Mao clutched his heart.

  I shouldn't have come, these two bastards, are they playing the master?

  Finally, Zhu Houzhao roughly calculated something.

   His eyes lit up: "The result is out, come here, come here, the elevation angle is 72 degrees, and I will personally come to the school to shoot."

  Fang Jifan had to admire Zhu Houzhao, this guy is very particular!

  After finishing the school shooting, Zhu Houzhao was worried, and looked at Fang Jifan: "Old Fang, your gunpowder is not wrong, right? Too much or too little will affect my calculation results."

  Fang Jifan seemed to shake his head with a rattle: "His Royal Highness wants to employ people without doubt."

  Zhu Houzhao said excitedly: "Okay, come, let me light the fire.

   Someone took a torch and lit the fuse of the shell first.

  Cannonballs also have fuses?

  Zhang Mao is full of doubts.

  Sparks sputtered from that lead.

   At the same time, the lead wire inserted into the rear wall of the artillery began to be ignited. Zhu Houzhao and others had already fixed the artillery, and then, a long-lost roar sounded.

At the bottom of the gun barrel, a pound of two taels of gunpowder exploded in an instant, producing a huge air wave. The air wave expanded crazily, pushing the shell, and the shell quickly rotated along the rifling. The moment it left the barrel, the cannonball started to spin along with the rifling. With this inertia, the crazily spinning cannonball headed directly towards the target.

  The difference between a smoothbore gun and a rifled gun lies in this. After the gun is rifled, the resistance of the shell in the barrel increases, and the shell can obtain more gas energy. The most important thing is that the rifling has the ability to give the shell a rotation. After the shell flies out, it rotates by itself, which greatly reduces the resistance in the air and enhances the accuracy at the same time.

  The cannonball roared in the sky, like a meteor, smashing towards the opposite target.

  Zhang Mao opened his eyes wide. Soon, he realized that his naked eyes were no longer enough. He hurriedly took out the binoculars, lifted them up, and saw that the cannonball had sunk into the forest tied with the red rope.

  Zhang Mao took a breath...

   Actually... hit.

  Moreover... the range of the tiger squatting cannon is more than doubled compared with the ordinary one, and it is... where to shoot.

  Zhang Mao is not stupid. He naturally knows what the increase in range means. If this thing is put in the army, it will be a magic weapon. It's amazing, amazing... He was amazed.

  But at this moment, the opposite mountain suddenly burst into flames.

  What...what's going on?

  Zhang Mao was a little confused, and it exploded again?

   Cannonballs still explode?

On the other side of the mountain, in a forest tied with red ropes, flames shot into the sky. With a loud noise, the air waves blasted countless branches and leaves and the forest into a mess. The sparks caused by the explosion ignited the dead leaves nearby. , Black smoke billowed.

   Zhang Mao gasped for a moment.

   couldn't help but said: "Damn it, it's amazing!"

  Zhu Houzhao also raised his binoculars to aim, and cheered.

  Zhang Mao's old face flushed with excitement: "This cannon is powerful, very powerful, Jifan, we have to go to the top of the mountain to see, the old man wants to see for himself how powerful it is."

  Ordinary solid shells are actually nothing to look at, just a lump of iron falling from the sky, but Fang Jifan’s cannonball can actually be bombed twice, so accurate and with such a range, this is a magic weapon.

  Zhang Mao was an eye-opener. After he was a general, how could he not know how terrible the result would be after the appearance of this thing.

  He was like a child, before Fang Jifan could respond, he rushed towards the opposite hill excitedly.

  Zhu Houzhao and others had no choice but to follow and catch up.

Zhang Mao overcame thorns and thorns, walked like flying, his face was flushed with excitement, and his eyeballs were about to burst out of their sockets. Countless thoughts popped up in his mind. If he thought back to the time when Emperor Wen had this artillery, my father would have died in battle. ? Won't! Back then, if there was such a thing, in Jiaozhi, my late father would regret leaving Jiaozhi, and would it become the most regrettable thing in his life from then on? Won't!

  (end of this chapter)