[Thank you for your votes, work hard to code words, and ensure quality]

Bai Erwa flew up, under the liliang of four horses.

Unfortunately, flexibility, stability, and maneuverability are far inferior to those brought by Li Yuanxing from later generations, which is the gap in technology. Li Yuanxing approached Li Changying: "Changying, this king congratulates you, such an achievement is very powerful." This king is very satisfied, but you also have to haode take care of yourself, you have lost weight these days! ”

Li Yuanxing said a few words of praise, plus words of comfort, Li Changying almost burst into tears of excitement.

Li Yuanxing gently patted the back of Li Changying's hand twice, then picked up the telescope and posed to watch Bai Erwa fly. In fact, Li Yuanxing was communicating with the time machine at this time.

"Is there a result?" Li Yuanxing asked the time machine.

"The time difference is four times, and there must be other items produced. But according to this steam engine, the relationship of fourfold necessity has been demonstrated. The time machine gives an affirmative answer.

Li Yuanxing asked again: "I have always suspected that these are in movies or animations. ”

"Your speculation is wrong, and theoretically it is achievable. But in your time, it is only because there is a more efficient way that the steam engine is used only in a single direction of mechanical kinetic energy. Such a steam cannon, if placed in the era of human beings, can be made more sophisticated, and the air pressure can reach more than 60 pa. And the one I saw in front of me was only about 15 pa. ”

Li Yuanxing seemed to understand: "I think Yaozhou should be studying steam turbines, the pinnacle product of steam power!" ”

The time machine did not answer. seems to have acquiesced to Li Yuanxing's speculation.

"Additional question! Artillery and steam cannons are theoretically more difficult to manufacture? ”

"Artillery!" After the time machine gave an explanation, it stopped expressing an opinion. The Weishenme artillery is more difficult, and this is something that Li Yuanxing needs to learn and study by himself.

Li Yuanxing put down the binoculars, and at this time Bai Erwa had already flown back.

"About this cannon, this king needs a detailed report!" Li Yuanxing put the telescope on the small table next to him.

It was not Li Changying's task to hand over the report, she leaned against Li Yuanxing's side: "Your Highness, originally several Danshu Immortals were going to use gunpowder for fireworks to make cannons, but unfortunately after loading the iron bullets, they didn't even fly out a hundred steps, and the increased amount of gunpowder was blown up. The iron bullets did not fly out either. ”

"Yes!" Li Yuanxing nodded.

Although Li Yuanxing did not go to college. However, even if you go to university, you may not be able to learn a similar major. Real knowledge still comes from a lot of reading.

Li Changying said that Li Yuanxing could understand that the strength of the barrel was a problem, but now this is made of gunpowder not explosives, and there is a qualitative difference. It's still okay to put a Vulcan crow. But really turned into artillery. Explosives are needed, and explosives of sufficient purity are needed.

"Your Highness, this cannon was inspired by that little snack tool!"

"A snack?" Li Yuanxing couldn't think of it. Is there something that makes snacks that can be turned into cannons?

"It's popcorn!"

Popcorn!

Li Yuanxing smiled, that thing is really powerful, I remember that when I was a child, the long iron ball was burned on the stove, and then the strong air pressure turned the corn kernels into popcorn, and the moment Zuihou opened it, there was a bang, and it was very powerful.

But what about increasing this power tenfold?

Thinking of this, Li Yuanxing motioned to bring a cannonball and take a look.

The guards brought in three shells, and the three shells were almost identical, and the most interesting thing was that each shell had three rings.

"Your Highness, the first is a wooden ring, the second is a rubber ring, and the third is an oil ring." Some guards brought three more rings.

Li Yuanxing nodded and motioned for the guards to continue.

These three rings, to put it simply, increase air tightness, increase lubrication, and reduce friction with the barrel.

"Your Highness, the first iron bullet is a solid bullet, the front is a pointed iron bullet, and the back part is a lead case. The second iron bullet was a hollow bullet with a phosphorus warhead at the front end, which contained gunpowder and some tiny iron nails. The third is also a hollow bomb, which is filled with oil and is also ignited with phosphorus at the tip of the warhead! ”

"Let's try it!"

The air gun of later generations, Li Yuanxing played. Ordinary air guns are loaded with lead bullets the size of mung beans, and it is still very useful to shoot a bird or something at a distance of seventy or eighty meters, and the lethality is not small, that is, it hits the rabbit, as long as it hits the vital point, it can also make the rabbit not die but also seriously injured.

However, if it hits the leg or something, the rabbit will still escape.

Later, the high-pressure air gun could hit about 200 meters, and the effective range was about 120 meters.

At the moment, I don't know how far this air pressure cannon can hit.

The guards opened the back cover and began to reload.

Li Yuanxing sat from a distance and watched, this is the rear loading type, and it is obvious that the flange is used, and then six iron buckles are added to fasten the flange, and the sealing is sealed with four rubber rings, and then connected to the filled cylinder.

The cylinder is twice as long and about four times thicker than the one used to make popcorn.

The cylinders were not directly attached to the gun body, but were placed on a shelf, which was then connected by a flange.

"Your Highness, this cylinder can be fired four times in a row!" Li Changying whispered to Li Yuanxing on the side.

Li Yuanxing remembers reading in a book that in Europe in the 14th century, there was a prototype of an airsoft gun. Then in the seventeenth century it was equipped with an army, and there were also cylinders that could fire twenty buckshots.

But that's airsoft guns, that's airsoft guns.

"Write it down, let them study it, and let the whole bottle burst out at a time to increase the intensity. This is a cannon, it must have a range, it must be powerful. If it's small, there's some fun to shoot for! Li Yuanxing said, and there was a guard next to him who quickly recorded it with a pen and paper.

Bai Erwa had already landed, her face full of excitement.

"Since Erwa, you like to fly so much, you are allowed to recruit a hundred, one out of a hundred." Li Yuanxing said lightly.

"Your Highness!" Bai Erwa gave a heavy salute and stepped aside.

Li Yuanxing closed his eyes slightly, waiting for the launch of the air cannon, and finally, all the guards left the air pressure cannon and stood on the side and bowed down waiting for the order, the fan in Li Yuanxing's hand was raised slightly, and then waved violently.

"Put!" The guard in charge shouted, and then one of the guards pulled the cannon door hard.

dared to test the cannon in front of Li Yuanxing, that is, after many shiyans, he had enough confidence. Otherwise, Li Changying would not have rushed back to Qinwangzhuang overnight, so there would definitely be no possibility of failure.

There was a muffled sound, and Li Yuanxing felt that the ground under his feet was shaking.

The eight-foot-long barrel was still trembling slightly, and a hundred feet away, more than a dozen bamboo rows had been laid out there.

I didn't see it clearly when it happened, those bamboo rafts were smashed and smashed.

"Maximum range?" Li Yuanxing asked.

"Your Highness, I haven't tested it, because there is not enough space in Yaozhou, and I have accidentally destroyed a workshop and injured a few people when I tested the gun. I originally wanted to test the cannon in the field, but all the money was blown up in the field! Li Changying already knew about the soap, so he was naturally reluctant to destroy the fields.

"Maximum lethality?" Li Yuanxing asked again.

Li Changying was very nervous: "Your Highness, I still haven't tested it!" ”

"Okay, don't be nervous. You rest for two days, and then conduct a comprehensive evaluation, I think you are anxious to let this king see this cannon, and your mind this king knows! Li Yuanxing was very gentle, which made Li Changying really moved.

After stretching out his hand to help Li Changying up, Li Yuanxing said to Bai Erwa: "First, fill that gas cylinder, this king wants to know that it can be stored for a few days." Second, requisition the Xiying of Chang'an, ask the Security Department of the Tang Empire to arrange guards, and test the cannon three days later, and the king must know all the data. Third, send someone to Yaozhou, this king should know the power of this small steam engine. Fourth, block the news! ”

Li Yuanxing said that, turned around and left.

After walking a few steps, he stopped: "Fifth, you guys have a good rest today, but you keep an eye on your things!" ”

"Yes!" Bai Erwa bowed down and obeyed the order.

Sent Li Changying back to the backyard, and after comforting Li Changying by the bedside, Li Yuanxing returned to the study.

In the study, Wu Cao is sorting out all the information of the past year, and listing a detailed table, ready to make a very detailed analysis.

"I need you to go to Yaozhou in person, this time it will be longer, at least a month."

Wu Cao was stunned for a moment: "Is there something happening in Yaozhou?" ”

"Yaozhou, the air pressure gun was made, the principle is similar to the air gun, but they also made two air guns, I let them be tested in three days, so you need to run Yaozhou in person, don't be in a hurry this time, look at the problem carefully."

Wu Cao stood up, walked in front of Li Yuanxing, and gently took Li Yuanxing's hand: "This time, I will only watch and promise not to say anything." ”

"It's not that serious, some basic knowledge of mathematics, physics, and chemistry can be considered for teaching. You have an idea! ”

Wu Cao seemed to have some hesitation.

"You're not afraid that I'll make another mess for you?"

"No!" Li Yuanxing shook his head.

Squatted on the ground and said to Wu Cao: "My Li Yuanxing's woman is not a good-looking vase placed there, nor is it my Li Yuanxing's echo worm, she should have independent thoughts, you take Chunlan and Lanqiu with you, my only suggestion is to observe first, don't rush to conclusions!" ”

Wu Cao's originally depressed expression was swept away: "I'm still very good!" ”

"That's it, otherwise I don't worry about who goes to Yaozhou. And I can't leave now! Li Yuanxing also praised it with the slightest hesitation.

"I'm excellent!"

"I know." After Li Yuanxing nodded, he said to Chunlan who was standing aside: "Take good care of Princess Mingyue in Yaozhou, and this king will be rewarded when he comes back!" (To be continued......)

PS: I consulted a lot of information, although it is black technology, but this is a historical text, and it will never be outrageous.