Survival Three Kingdoms

Chapter 249 Ground to Air (1)

Just now Zhou Cang was distracted because he thought: Yuan Shao really built an archery tower. In history, it was Liu Ye who presented Cao Cao with a catapult to destroy Yuan Shao’s archery tower. Liu Ye didn’t join the army this time. This credit must have been stolen by him. Hehehe ... What is a catapult like?
"What is Wei Guo thinking so focused on?" Cao Cao asked again.

"I thought of a method just now, but I don't know if it's feasible, so I didn't hear Mr. Cao's question. Please, Mr. Cao."

What's the matter, hurry up and say it.Cao Cao's eyes widened, "Let's listen to what Wei Guo said."

"Whether it will work or not will not be known until you try it. Mr. Cao, I won't say anything. Can you give me five days to prepare?"

"Yes." Cao Cao nodded without hesitation, "What does Wei need?"

"Yes. One is to ask Mr. Cao to order people to cut down huge trees, which must be hardwoods. The second is to have skilled craftsmen, mainly carpenters and some blacksmiths. The third is to prepare an extra hundred catties of stones and long ropes. The more the better."

"Okay. Le Jin, you will do your best to obey Weiguo's dispatch. I will wait for your news in five days."

When the crowd dispersed, Zhou Cang asked Le to go in to prepare the materials, summoned the craftsmen, and ordered to draw out a block with a radius of two miles, so that idlers could not enter.Back in the camp by himself, he desperately recalled the structure of the catapult, and then picked up a pen and kept sketching.

The next day, Zhou Cang found Le Jin with the picture. At this time, Le Jin had found a good craftsman and cut down nearly a hundred giant trees. The branches of the tree had been cut off, and only the trunk was kept. Zhou Cang was very satisfied after seeing it.

"I'm going to build such a thing, and I'll call it the Perak Car." He showed the picture to the craftsmen: "Look, this is the base, and the base is equipped with four wheels. On both sides are the supporting wood, on which the A crossbar, and a long log on top of the crossbar..."

"General, isn't this a catapult?" Someone asked.

Zhou Cang was taken aback for a moment, unexpectedly someone knew Catapult. "How do you know?"

"The villain's house has always been a craftsman in the army, so I recognize it. It's just that the catapult is only one or two hundred paces away, and it can't reach far, and its accuracy is not good."

I was actually negligent, the catapult had already come out in the Warring States Period, how could anyone not know about it.Since someone knows it, it is convenient to do it, but why is there only one or two hundred steps?Could it be a parabola problem?Or is it force and friction?
"Besides, this cart throwing rocks requires a hundred people to pull it." The man continued.

Zhou Cang understood that it might be due to the problem of traction, as long as he made a slight change, it would not be a big problem to go a hundred steps away.

"What's your name? Where are you from?"

"The villain is called Wang Dahammer. He is from Runan."

What?Wang Dahammer?Zhou Cang stared blankly at the person in front of him.

"The villain's father didn't study. When my mother gave birth to me, he was swinging a sledgehammer, so he named me Sledgehammer." Wang Dachui said shyly.

"Okay, Sledgehammer, you will follow this general from now on. This general ordered you to be a battalion steward for the army craftsman." Zhou Cang wanted to dig out talents when he saw them, especially grassroots talents like this kind of unobtrusive.Old blacksmith Zhang is old, and his son and apprentice have inherited a little craftsmanship, and the level of military equipment is obviously inferior. "If you have any colleagues or old friends, you can introduce craftsmen to do camp. I will reward you with a hundred coins for every qualified craftsman you introduce."

Under the envious eyes of everyone, Wang Dachui knelt down and kowtowed to thank the sky. With snot and tears pointing to the sky, he swore that he would do his best to repay Zhou Cang's kindness. Introduced by my nephew.

"Let's change this picture a little bit. Add two support woods and a horizontal bar at the end of the base, and add baskets to both sections of the long wood, and that's it..." Zhou Cang said: "Sledgehammer, you Do you understand?"

Wang Dachui thought for a while. "General, isn't this a way to use the traction force to pull it down and turn it sideways?"

"Smart!" With one sentence, Wang Dahui's stewardship is not a waste of reputation. "Since you understand, then you can lead them to do it." Zhou Cang's words are fine, but if he really leads them, he will be blinded.

Wang Dachui was very motivated. The craftsmen worked together, divided labor and cooperated, and completed the assembly in a day and a night. Le Jin still sent people to cut down trees and collect stones.

On the third day, Zhou Cang had people install a basket on one end of the long log, put a stone about [-] to [-] jin inside, and put a stone about [-] jin on the other end and tie it with a rope.Zhou Cang ordered fifty soldiers to pull up the five-hundred-jin section with ropes, and shouted, "Let go."

A section of five hundred catties fell rapidly, and the other end was tilted up, and the stone was thrown far away. It was about 150 steps by visual inspection.

It's done!The crowd cheered together.

Zhou Cang frowned: Although the 50 people let go as much as possible, they were still fast and slow. The nearly ten soldiers who let go slowly were all scratched.One by one was bloody, and some people's wounds were almost as deep as the bone.

It seems that the current problems are: first, the speed is too slow, and it is difficult for the soldiers to keep pace; second, it is too laborious to pull the two load-bearing stones, and the rope is estimated to be broken after a few times; third, the throwing distance is still not enough.

"Sledgehammer, you are looking for a large log in the shape of a wheel, and put the middle hole on the crossbar, like a grinding disc. In addition, carve a groove on the outside, that's it, the groove must be smooth into a line. There is a section of the base Also add a crossbar, put a log in the middle, and the upper and lower logs form a line." Zhou Cang also designed a pulley of the millstone version, "You pass the rope through the groove."

With pulleys, friction can be reduced, and it may be easier for soldiers to pull up the boulder, and what needs to be solved is to be able to let go and put down the boulder at the same time.Zhou Cang arranged for the craftsmen to continue assembling according to the new pattern, and he started to use his brain again.

"General Le Jin, please find some stonemasons from the army to polish the stones, preferably round or oval, at least not as weird as they are now." The shape of the stone bullet will also affect the trajectory and distance of the flight. "You prepare some more long strips of rags, so that the soldiers will wrap their hands."

This simple request is relatively simple, and Le Jin went to handle it after agreeing.

On the fourth day, the craftsmen had already assembled ten of their catapults, and the others were still being processed in divisions.Zhou Cang summoned his soldiers again and threaded the rope down the upper and lower pulleys. It only took a dozen soldiers to pull up the boulder.

This time Zhou Cang didn't yell to let go, but said to the dozen or so soldiers: "You guys have to stand firm." Then he drew out his waist knife sharply and cut off the rope with one blow.The boulder fell, and the stone on the other end was thrown more than 300 steps.A dozen soldiers lost their footing and lost their center of gravity, all fell to the ground.

"General Zhou's method is good. We can lay thick grass on the ground without falling. But the rope will get shorter and shorter, and it won't be long enough if you use it twice," Le Jin said.

(End of this chapter)