Soldier Armor: "Look at it!! Paper!! Pancreas!! It's been exchanged for objects!!!"
Soldier B: "Don't miss it when you pass by!!! Only collect chicken, duck, fish, meat and eggs!! It won't melt when you encounter water!! The pancreas that remove oil and clean the dirt will be replaced at will!!!"
Soldier C: "I'll try to change it and get some tighter!!! I'll change it today!!! I can only ask for it early tomorrow!!! No cash will be charged!!! Just chicken, duck, fish, meat and eggs!!!"
Yan Bing stood on the roof and looked at the group of soldiers who were shouting hard, nodded with a wicked smile, and then flew back home.
"Master!! Look!! What is this!?? I just exchanged a pound of pork!! The pancreas that cannot be melted when exposed to water!! It's so easy to use!!" Feng Chen said while holding the soap and approaching the old man.
The old man got up and grabbed the soap and looked at it. He smelled it again, then threw it back to Feng Chen, leaned back, shook his palm fan and sniffed two words: "Premature family!!"
The eldest brother was disgusted, and then his face turned slightly red. He had to carry the newly bought meat and vegetables to the kitchen...
Yan Bing smiled slightly.
It's okay, don't worry...
It was noon in a blink of an eye. Yan Bing was the first to rush into the kitchen as usual, served a bowl of rice for himself, picked a few favorite dishes and rolled them into the bowl, held the bowl and ran towards the room.
Although she was very embarrassed when she was squatting in the room and holding a bowl of sea to eat, she could at least escape from the scene before everyone was on the table, so she could still keep some decentness for herself.
Yan Bing gradually calmed down and ate and drank. When everyone finished eating and finished the table, she sneaked to Yingxian Courtyard while there was no one in the yard.
At this moment, this famous Duke Dingguo lived as a "transparent person" in her Duke Dingguo's mansion.
But only Yan Bing himself knew that all this patience would soon end...
Today, the reason why she was so anxious to rush to Young Hyun Academy was mainly because the first batch of experimental subjects, the Whitworth Magic Modified Rifle was time to inspect the goods...
Before, Yan Bing has always been concerned about the development trends of these flintlock rifles, and has been a participant from beginning to end and made suggestions.
Due to the super stability of yellow gunpowder, it cannot be detonated by flint alone, Yan Bing followed the principle of modern rifle bullets and wrapped black gunpowder behind yellow gunpowder with straw paper as the base fire to stimulate the yellow gunpowder.
Then Yan Bing broke the traditional front-mount design of the Whitworth rifle, and instead opened a foldable steel flip near the barrel of the photo door.
When the bullet is needed, the soldier only needs to press the machine spring on the side of the gun with his left thumb, then grab the door with his right hand and pull it up. The rear half of the hexagonal barrel is turned out. The length of this section of the barrel can be just enough to stuff a wrapped fire medicine bag and a hexagonal bullet, and then slap the flipped part back, push forward, and snap into the machine spring.
This design draws on the prototype of the world's earliest rear loading rifle design, which will greatly reduce the loading time of the flintlock rifle.
Although the loading speed alone is still slightly inferior to the composite crossbow, considering the range, power and accuracy, it is far beyond the former in all aspects.
However, this experimental innovation will also mean that this magic-modified rifle will face greater risk of explosion and test of barrel life.
So, she must be present today.
Not only as a witness, but also as a supervisor, she did not want anyone to lose her life because of her lack of understanding of gunpowder and her temporary carelessness.
While Sicuo, Yan Bing had already arrived at the shooting test site a mile east of Yingxian Academy. This was originally a place where she asked craftsmen to check whether the composite crossbow was qualified, and it was also a weapon test site she specially prepared in advance.
It covers an area of six hectares, which is exactly the size of a regular stadium. It is just surrounded by not stands, but piles of sand and gravel bags, surrounding the site, and patrols are constantly patrolling the posts.
When Yan Bing entered the test site, more than a dozen craftsmen had already fixed the gun to the wooden frame and tied the traction rope. They seemed to have been waiting for her anxiously for a long time, but they did not dare to complain. They could only sigh in a low voice and express one meaning.
You're here...
Yan Bing looked at their anxious expressions and smiled awkwardly, then saved a series of speeches prepared in advance, walked directly to the front, raised one hand, and shouted loudly: "Testing Rifle No. 1!! Let it-!"
The craftsman, who had been safe for a long time, opened his mouth and laughed, pulled the traction rope, and with a bang, the bullet came out. In just a few seconds, he saw a piece of dust rising from the gravel bag at the end of the wall...
The craftsman was stunned for a moment with a laugh, then laughed and danced, shouting: "I succeeded!!! Hahahahaha!! I succeeded!!!"
Yan Bing smiled.
Sure enough, there are not many normal people doing scientific research...
He ignored him and raised his hand again and shouted loudly: "Testing rifle No. 2!! Let it go—!!"
Looking at the craftsman again, I don’t know if he was too nervous or because he was anxious about waiting, he tightened the rope and pulled it hard. At the same time as the gunshot, the wooden frame fell to the ground. Everyone immediately ran away. Only the stupid guy who had just celebrated was still jumping and jumping in place, and he had no idea what happened...
The dust settled and everyone came out of the bunker one after another.
Manager Fang went up and gave the man a head and cursed: "It's not that you can tug of war!! You're so hard!! You stupid guy!!"
Then he carried his robe and ran to the No. 1 craftsman, lifting his leg and kicking it.
"You're so fucked up!? The guns fell just now, and you're still jumping with this one!!"
Fortunately, the No. 2 gun did not explode, but the bullets had long since flew to where...
Yan Bing persuaded Director Fang a few words, then raised his hand and said, "Experience No. 3!!! Begin!!!"
The third craftsman immediately pulled the traction rope, and the gunshot sounded! The bullet came out! There was no explosion!
Yan Bing nodded. Sure enough, the pressure resistance of the steel barrel is not comparable to that of a mature iron barrel...
During this experiment, they prepared a total of ten rifles.
The amount of gunpowder in each rifle increases by 2000 yuan, in order to test the critical point of the barrel pressure resistance.
In this way, I tried until the seventh hand and exploded...
Then there is no need to try the remaining three, and it will be blown up even if you try it.
So Yan Bing ordered everyone to continue to test five of the remaining nine rifles according to the amount of gunpowder No. 6, and four were continuously tested according to the amount of gunpowder No. 5.
Because this step is to test the durability and life of the gun, so as to select the most appropriate firing dose, and then conduct a specific test of range, power and preciseness.
But this... takes a lot of time...
Yan Bing asked about the progress of the sand mold casting cannon again.
Manager Fang pondered for a moment and said slowly: "Now the sand mold has just been formed. It will take at least one or two months to pour the molten steel, then form and cool it, and then drill and polish it..."
This is basically the same as Yan Bing’s expectations.
The sand mold casting method can be said to be the most efficient method before the formation of a mechanized factory, and there is no doubt about it.
So much so that this method has been used in modern times.
Of course, it's not used to cast cannons anymore...
Instead, it is mainly used in the casting of mechanical parts.
There are two ways to build sand molds.
One is the integrated casting method, and when the steel is completely cooled and formed, then smashed the sand mold of the gun barrel, you will directly obtain a complete cannon.
The other is the solid casting method. The cast gun body is solid and requires later drilling and polishing. Although it is more time-consuming and labor-intensive, its muzzle will make the gun wall more uniform and smooth because it is drilled in the later stage.
Logically speaking, Yan Bing should choose the second one.
But that's the choice of a conventional round cannon.
She produced hexagonal cannons!
The gun wall itself is thicker than other guns, and it can be polished and trimmed in the later process of polishing the hexagonal gun barrel. Naturally, the first method of integrated molding is chosen, which is more time-saving and labor-saving.
Yan Bing praised the skills of Superintendent Fang and these dozen craftsmen, and gave high recognition to their work during this period. After greeting and painting cakes, he put his hands behind his back and returned happily.
Walking on the streets of Tongshun City with satisfaction, while fantasizing about how to build a modern force, I suddenly realized something was wrong...
Why is it in broad daylight... There are no restaurants on the street that open the doors, and they all have door panels on them... they are closed??