Finally got rid of a group of unruly guys, and just before everyone had time to smoke a cigarette and drink saliva, Liu Lang heard the soldiers of the guard platoon on duty outside the door arguing with people, and the voice was still a little familiar.

Liu Lang stood up curiously, walked out of the door and couldn't help laughing, isn't that an acquaintance?

It was Su Xiaomei, the youngest of Comrade Lao Ye's group of students, although she was young, her sharp thinking and to the point answer that day still left a deep impression on Liu Lang.

On some sultry days, "Su Xiaomei", who still covered herself tightly, stared at her round eyes, puffed out her cheeks with baby fat, and was arguing with the guards and soldiers ten meters away from the door.

But apparently, because of the rules, the fighters of the guard platoon had no intention of letting him in, no matter what he said.

"Haha, Yan Qiguan, let Su Xiaomei come in! In the future, it is Xiong Zhen and a few of them, so there is no need to stop them, let them come in directly. Liu Lang smiled and shouted from afar.

"Head Liu, what do you say! These guys under your command are disciplined, but they are a bit brainless. After entering the courtyard gate, Su Xiaomei, who had been blocked at the door for a long time, was obviously still angry, complaining sullenly.

"Hehe, they didn't receive my military order, it's a dereliction of responsibility to let you in, if you want to blame, then blame me for neglecting." Liu Lang smiled and explained to the somewhat immature student.

"That's right, but I'm being careful." Su Xiaomei's face showed a hint of amazement, and then as if she remembered something, she peeked out of the door.

Liu Lang brought a bench over, and asked with a smile: "What's the matter, there are Xiong Da Xiong Er and they are chasing you behind?" ”

"No, Head Liu, do you know what project Senior Xiong and Senior Qian asked me to be responsible for? I'm not convinced to come to you to complain, so naturally I have to guard against a few of them. Su Xiaomei's northern dialect has a bit of Wu Nong's soft language, and her unchanged voice is still a little crisp, which is quite good.

"Haha, don't worry, even if you sue, no one will dare to trouble you." Liu Lang was amused by the children.

"I remember Professor Ye said that you only enrolled last year, and I am afraid that he brought you to Guangyuan to show you the wonderful world outside! You should still learn more from your teachers and seniors. Liu Lang, who had laughed, took the tea brought by Sanchuan'er, and admonished while putting it in front of Su Xiaomei.

"Hmph, Captain Liu, why don't you look down on people?" Su Xiaomei's eyes widened, and she angrily spread the drawings in her hand in front of Liu Lang, and an oval rocket profile was impressive.

"It's 。。。。。" Liu Lang was slightly stunned.

"This is a diagram of the structure of the rocket that I spent a week designing." Su Xiaomei pointed to the figure she drew and proudly introduced: "Look, here is explosives, I call it the battle head, and here is the fuel room of the rocket artillery, just like that sky monkey, do you understand?" I call it the propulsion section, which ignites the fuel, erupts backwards, pushes the rocket out, and depending on the time, ignites the explosives, and finally explodes。。。。。。 ”

Liu Lang looked shocked, looking at the little boy in front of him with a baby fat and childish face on his face, that's right, when he explained the principle of rockets to Xiong Zhen, he had basically told them the principles of rocket flight that he knew, but it only took a week for this person to draw drawings that were almost the same as those of later generations.

Liu Lang is sure that the drawings he once saw in the arsenal are almost the same as this hand-drawn one, this little boy, the special mother's will not also come through the time! Otherwise, Liu Lang would not have thought that there would be a person in the future who was still surnamed Su at such an age. Are you so lonely? It's also the third generation of red with positive roots!

However, Liu Lang's surprise continued.

"Head Liu, I came to you today, in fact, I have two very important questions I want to ask you." Su Xiaomei looked back at Liu Lang with a serious face.

"You say."

"You're an ordnance expert, you're judged. The rifled gun is more accurate than the smoothbore gun because there is rifling in the breech, which can allow the shell to rotate in the air to maintain the stability of the trajectory. ”

"That's right." Liu Lang gasped, bared his teeth and nodded.

·“ Senior Xiong is more inclined to use the center of gravity rudder proposed by Senior Qian to maintain the rotation of the rocket in the air, and denies my design, you say that it is not angry. Su Xiaomei angrily accused her two seniors of being black.

Liu Lang。。。。。。

Didn't you tell me what your design was? Xiong Qian and the two used the most common practice in this era, and it was also normal.

"And what is your design?" Since he had seen the demonic drawings, Liu Lang's voice had become a little cautious.

He had long dared not underestimate the little friend in front of him, especially after he had shown such an amazing talent.

"My design is much simpler than theirs, using the turbine rotation method, that is, using the nozzles at the tail of the rocket, from one to several, each nozzle and the center line of the rocket are deflected at a small angle, so that after the rocket is ignited, the propellant can push the rocket forward while pushing the rocket to rotate like a shell of an ordinary rifled gun." Su Xiaomei said with a bit of arrogance.

"Your design is correct, and I fully support it." Liu Lang slapped the table and said with certainty.

In my memory, the 107 rocket seems to be the way the turbine rotates to keep the shell rotating in the air, although Liu Lang doesn't know how it is maintained, but Su Xiaomei's design, Liu Lang thinks, is very advanced, very bullish, and can definitely be realized.

"Hehe, I know that Captain Liu, your vision is different from those stupid seniors." Su Xiaomei raised her head and smiled brightly, revealing her two good-looking little tiger teeth.

Liu Lang sweated, Su Xiaomei can say so, he doesn't dare, those few people will be at the pinnacle of the Republic of China standing on the peak of science in the future. Even his high-ranking old man was courteous to those people.

"There is also the issue of the fuel for rocket propulsion. The seniors insisted that with gunpowder, the rocket moved forward by the propulsion generated by the back-jet of the high-pressure gas produced after the gunpowder was burned, but I think that with gunpowder, the range is not enough, if you want to increase the range, then you must increase the amount of charge, and increase the weight of the rocket, you have made specific requirements for the weight of the rocket, it cannot be higher than 18 kilograms, I know that it is for your consideration of transportation, a soldier can carry up to two rockets, if it is greater than this weight, then at most one can be carried. However, if the rocket wants to maintain sufficient power, the explosives department cannot be reduced, and in order to ensure that the high temperature generated by the fuel does not affect the explosives in front of the rocket, the rocket requires extremely high steel in the combustion chamber, which also requires a great deal of mass.

However, if you can't maintain a longer range, you can't suppress the Japanese artillery, you must know that the range of the Japanese army's 41 mountain gun is 6,000 meters, but that is not their main artillery, their main artillery 150 howitzer can reach 12,000 meters. As the main artillery of the independent regiment, if the main artillery of the Japanese invaders cannot be suppressed, it can only be a fish belly in wartime, which does not meet the needs of the independent regiment and also humiliates the School of Science of Huaqing University。。。。。。 Su Xiaomei clenched her fists and talked very passionately.

Liu Lang admires this kid a little, this special mother wants to engage in the rhythm of extended-range rockets! You hang like this, do your teachers and seniors know?