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Chapter 167 Bullet Expansion Concept
The core concept of Mini's bomb is expansion. When Allen talked about the concept of expansion, the slaves who were still working in the distance showed confused expressions.

They were not selected for the new bullet production team, but the old bullet craft will eventually fade with time, and sooner or later they will have to learn a new craft.

They have a reason in the bullet workshop, and they must stay in the workshop to listen to the lectures, and work while listening, as much as they can hear.

Since they still have to make the round lead bullets at hand, most lion tribe orcs can only listen with their ears.

The working tables of a small number of orcs face the blackboard area directly, so they can concentrate more on listening to the lectures.

"This is the shape of the new bullet. It is difficult to grind a sharp cone with the center of the circle aligned with the bottom of the bullet with the existing technology, so our bullet will be a round bullet that tends to be conical. Its body is larger than the round lead bullet. It's a bit longer, and it's cylindrical at the end."

Swish, swish, white chalk fell, and a pair of round-headed cylindrical bullets appeared in front of the orc.

Many skilled workers thought that the conical bullet was already a very powerful principle analysis. Unexpectedly, this time Allen completely changed the shape of the bullet and changed it into a conical cylindrical bullet.

"Why does the follow-up part become cylindrical, can't it just use a conical warhead?" Some orcs wondered.

Allen glanced at him, explained the function of the cylindrical body, and drew a perspective view of the interior of the cylindrical body, with the conical concave cavity inside.

Obviously, this cavity is not a design defect, but the core concept of this expansion bullet.

"This is an internal perspective view of the tail of the bullet. The tapered cavity inside will help the bullet fit snugly into the bore of the barrel."

"Master Allen, you just said that the specification of this bullet will be a little smaller than the barrel. Now that it has become smaller, what about the gap between the bullet and the barrel?" Daisy stopped writing, a little puzzled.

Under Allen's full-level teaching, he already had in his mind a complex perspective view of the interior of the Minie bullet, as well as a perspective view of the rifled barrel.

When the two perspectives were deduced in his mind, he found that the bullets inserted into the barrel would leave a very obvious gap, and such a gap was obviously a defect.

"Don't worry, we all know that our muskets use the internal energy of gunpowder to propel the bullets to fly fast and penetrate everything in their path."

Having said that, Allen pointed to the tapered cavity at the end of the bullet on the blackboard, and quickly drew a cork with chalk and the grains of black powder behind the plug.

After drawing the black powder, move the arm down, and draw a picture of the black powder burning violently at the end of the bullet. "When the gunpowder burns in the barrel, we can see the gunpowder gas pushing the cork into the cavity, and propping up the cylindrical tail of the bullet."

He paused, then drew another picture of the decomposition steps of the expanded bullet, and then drew a mess of gas, "After the tail expands, it will bite with the barrel of the barrel to form a tight high-pressure air seal. It spins out along the rifling, and then there's the aerodynamics."

"You can see that when the air passes through the conical bullet, the gas is also rotating, which makes the trajectory of the bullet more stable and will not easily deviate from the trajectory."

After some explanations, at the 8th minute, the orcs in the group kept saying, "So that's how it is!"

After explaining the principle, it came to the link of how to make the Mines bullet. Allen miscalculated the time this time and spent a few more minutes teaching people. It took a total of 22 minutes to teach the new technology to the orcs.

When he left the blacksmith shop, the orcs from the Bullet Workshop gathered around the blackboard, looking at it over and over again, like looking at rare treasures.

"I didn't expect to have so much knowledge in making a small bullet. It seems that I have to work hard on the junior high school physics at home." Dai Xi, the project leader, looked at the notes in front of the blackboard, thinking about the physics book.

Allen's talk today is a relatively in-depth content. It is very difficult for orcs without foundation to learn, so quickly pick up the small notebook and write down the notes on the blackboard into the small notebook.

The orcs who make round bullets don't have this kind of treatment. They can't stop the work at hand, they have to keep doing it.

In order to prevent leakage of secrets, the contents of the blackboard will be wiped with a blackboard eraser after the new working group has finished taking notes.

"Master Daisy, after get off work tonight, let's study physics together."

"Yeah, yeah, I don't re-learn physics, it feels a bit difficult to learn."

"If Lord Alan hadn't taught it himself this time, it would have taken us at least a month to understand these contents."

When Dai Xi heard what his subordinates said, he also felt that it made sense, "Okay then, let's form a group to study physics tonight."

Bullet workshops generally do not work at night. Tomorrow there are many places in the town that need candles to work night shifts. The supply of candles is insufficient, and the brightness of candles is not enough. People in dangerous industries will naturally wait until daytime to work.

The orcs who don't go to work don't have much entertainment at night, and the orcs who love to learn often gather together and study by lighting a few candles.

However, physics is really difficult to learn. The test paper practice questions assigned by Allen made the orcs see that their heads were getting bigger, which made the scumbags feel resistant.

Parents don't beat their children now, they just take out a stack of test papers. When a child gets into trouble, pressing the child to do the test paper is the biggest punishment.

It is conceivable how courageous it is for the bullet workshop group to make up their minds to re-learn physics.

……

After Allen returned to the administrative building, Windsor was still typing in his seat, and other administrative staff returned to their jobs to continue working.

"What does it feel like other people don't try to use a typewriter?" Allen asked a little strangely.

In the morning meeting, I saw a group of people walking around the typewriter, but I didn't expect that the office was empty when I came back in the afternoon.

"They haven't memorized the characters yet. I'm afraid they'll wear them out, so I dare not give them a try." Windsor stuck out her little tongue, got up obediently, and took away the small hot cotton pad on her buttocks.

She returned to her seat reluctantly, and saw a blank piece of paper on the table, with the signature of the Ministry of Education Hoss on the paper, and the content was to arrange the date of the midterm exam and ask Mr. Allen to write the test questions.

Windsor handed the paper to Allen, and said, "November is coming soon, have you thought about the test questions for the midterm exam?"

"Well, the questions are all in my head. I thought copying was troublesome before, so I just typed out the test questions for each subject with a typewriter." Allen smiled slightly, flipping through the test papers in his mind, densely packed like an ocean.

When Windsor saw Alan's smile, she also showed a gentle smile.

If outside students saw the smiles of the two, they would definitely shudder, because with Alan with a typewriter, there would be more and more test papers.

Alan saw Windsor's smile, as if she was expecting the students' reactions.

He suddenly thought of those elementary school students who were troubled by various problems, especially Olympiad problems, they were too devilish.

"Hey, I didn't mean to make things difficult for them. My questions will try to test everyone's level, and I won't make things difficult for the sake of making things difficult." Allen said seriously.

(End of this chapter)