Bright Sword starts with the grenade flat.

Chapter 100 Liu Qin’s Talent

Because Liucun was further away than Zhaojiayu, while Zhao Gang and Li Yunlong were eating chicken and drinking wine, Liu Xiu took the special operations platoon back to his Liucun station.

However, it was not until Liu Xiu brought Liu Qin home that Liu Qin took out a thick document bag from his body.

Liu Xiu looked at the thick document bag in his father's hand and said curiously:

"Dad! What kind of precious information is in your file bag? You are so precious!"

After Liu Qin heard Liu Xiu's question, he did not choke and hide it, but said directly:

"It's nothing, just an engine design drawing!"

Liu Xiu became even more curious after hearing this, so he continued to ask:

"Dad, can you show me? Is it the kind of engine used in cars? Is it powerful?"

"Look! Just be gentle and don't break it!"

When Liu Xiu heard Liu Qin's words, he was not polite and immediately opened his document bag and looked at it.

However, Liu Xiu was confused at this sight, because what was drawn on the drawing was not the piston engine Liu Xiu imagined, nor was it the turbojet engine used in the Me262 turbojet fighter that would be put into the battlefield next year.

Because Liu Xiu never saw the fan blades of the turbine in this drawing, nor did he see the cylinder piston of the piston engine or anything like that.

This made Liu Xiu a little worried. You must know that he is a time traveler, and his vision is far beyond the current world for more than 80 years!

But now Liu Xiu didn't understand what kind of engine Liu Qin drew on this drawing. You must know that Liu Xiu is not a novice. Liu Xiu pays attention to technological products, especially turbojet engines and Liu Xiu knew something about piston engines.

Although he couldn't understand, Liu Xiu was good at one thing, that is, he asked if he didn't understand. So Liu Xiu looked at his cheap dad and asked:

"Dad, what kind of engine are you designing? I have also disassembled the car engine of the Little Devil. Doesn't it look a little different to you? Is it the engine used on the Little Devil fighter plane?"

Liu Qin heard that Liu Xiu actually dismantled the car engine of the little devil, so he smiled and said:

"Actually, both the car engine and the aircraft engine are the same. They are both piston engines. They are just a cylinder. There is a movable plug in this cylinder, which uses the air expansion when the oil and air are mixed and burned to do work. The more cylinders, the more The power of an engine means the greater the horsepower or power! But the working mode of my engine is completely different! Even the combustion method is different, because I call the engine I designed an explosive engine!"

When Liu Xiu heard the name, he was even more confused. He thought about it over and over again. The memories before the time travel were going back and forth in his mind, but he didn't even think about what the exploding engine was.

Turbojet engines, turbofan engines, ramjet engines, variable cycle engines, pulse jet engines, plasma engines, but I have never heard of any explosive engines!

So Liu Xiu had to pretend not to understand and continued to ask Liu Qin:

"Dad, I understand what you said before, but what is this explosive engine you designed that you mentioned later?" Liu Qin looked at Liu Xiu's curious face and did not feel impatient. Instead, he decided that Liu Xiu had a different attitude toward things. Curiosity is good material for research and technology, so I sorted out my thoughts a little and said:

"Xiu'er, Dad knows that your marksmanship is naturally accurate, but do you know where the power of the bullet comes from?"

"Dad, I still know this. It's the gunpowder inside the bullet case. The firing pin of the gun hits the primer, and then the primer ignites the explosive in the bullet case and finally pushes the bullet out quickly!"

Liu Qin nodded after hearing what Liu Xiu said, and then took out an 8mm pistol bullet for the Southern Fourteenth Pistol from his pocket, then bit open the bullet and poured the gunpowder in the bullet case onto the kang. On the small table, he then struck a match and lit the small pile of gunpowder on the table!

After Liu Qin finished all this, he smiled and said to Liu Xiu:

"Xiu'er, do you see the difference between the explosive ignited with a match and the explosive ignited by the primer when you hit the firing pin in the pistol?"

Seeing this scene, Liu Xiu immediately understood that Liu Qin was trying to tell him the difference between burning and explosion, so he nodded and said:

"You can see it! When Dad lights the explosive, it burns. When the explosive is lit with the primer, it explodes. It is precisely because of the explosion that the power of the bullet is so great! Because the explosive explosive burns up in an instant, so it will It emits so much power in an instant!”

When Liu Xiu said this, he was thinking of the scenes in the movie where American soldiers cook and eat with plastic explosives. Yes, the ignited explosives will only burn but not explode. Only explosives that are detonated with detonators or strongly impacted will explode.

After listening to Liu Xiu's words, Liu Qin smiled and nodded:

"Yes, there are actually two types of combustion of combustibles, one is regular combustion, and the other is explosion. The difference between these two types of combustion is the burning speed, so the power of the two is completely different when burning! Conventional piston engines allow the oil mixture to burn in the cylinder, but the engine I designed allows combustible materials to explode inside the engine, and uses the power of the explosion to push the aircraft or car forward!"

Finally, after Liu Xiu heard Liu Qin's explanation, he finally remembered what the explosive engine Liu Qin made was.

To be more precise, the engine Liu Qin developed was actually a concept engine that had been proposed in the 1880s and had not yet been successfully studied until the 1920s before Liu Xiu's time travel. Shock engine or detonation engine.

In fact, whether it is explosion, detonation or detonation, they all have the same meaning in the concept of physics. This kind of engine also has a full name, called pulse detonation engine or pulse detonation engine.

Of course, the concept of detonation was proposed in the 1880s, but the concept of using detonation as a propulsion engine was the idea of ​​scientist Yakov in the 1940s. Of course, it is not ruled out that someone thought of it earlier. The combustion method of detonation is used to make engines, but it has not been released. After all, the combustion efficiency of detonation is nearly twice as high as the thermal efficiency of deflagration, that is, ordinary combustion!

Thinking that his cheap father had actually developed an engine that had not been developed for decades, Liu Xiu immediately said excitedly:

"Dad, let's go to the arsenal tomorrow to see if we can make this engine. Our Eighth Route arsenal also has some machine tools!"

However, Liu Qin's words made Liu Xiu's excited heart cool down. Liu Qin smiled awkwardly and said:

"Xiu, in fact, my engine is only a semi-finished product. Although it is said to be running, the running time is not long, and the problems such as heat dissipation materials have not been solved yet! I have tried it before with Xiaoguizi, ordinary steel It simply can’t withstand the high temperature generated by the explosion!”

(End of this chapter)