Liu Deyun and Du Weize looked at the non-proportional sketches on the drawings, both of them frowned, although they could see from the appearance that this drawing was a cannon, but this cannon was 108,000 miles different from the cannon in their consciousness. ΔΔ『E small『Ω ┡ said .

"Brother Fan, dare to ask if this is a blueprint of a cannon?" Du Weize asked in a low voice, he was also confused with Liu Deyun, judging from the drawings, this cannon was not reasonable at all. The barrel on the drawing looks short and thick, and even if there is a standard shell, such a short barrel can only blow up the heels of their own fighters.

Liao Fan smiled awkwardly, in general, he was not too layman, but this thing was drawn with the appearance of his imagination, and he had never seen the entity.

"The drawing is not good, and I don't have the specific proportions, only such a shape, so when the design comes out, we will improve it!"

Du Weize picked up the drawings on the table and studied them in detail, the drawings are indeed as Liao Fan said, there is only one shape, and the minimum proportion and length are not available: "Brother Fan, what is the barrel on this drawing made of, so thick and so long, even if we have a factory, the steel used to forge the barrel we can't meet the requirements, if the barrel has a little flaw, it is easy to explode." ”

Liu Deyun also nodded and agreed with Du Weize's opinion, it stands to reason that Liao Fan is a division commander, and he has seen more guns than they have ever seen, and he should understand that the barrel needs qualified steel and forging technology, otherwise the barrel is not durable, and the designed cannon will have to replace the barrel frequently, so it is better not to waste these energy and material resources.

"Actually, I don't need such a good thing for this barrel, I plan to use gasoline barrels to make this barrel!" Liao Fan saw the confusion of the two people, and hurriedly explained the material of the cannon barrel to the two people.

Liu Deyun and Du Weize looked at Liao Fan in surprise, it was the first time they had heard of using gasoline barrels to make cannon barrels: "Brother Fan, are you sure you're not joking." ”

"Come on! Let me tell you two how this cannon works. Liao Fan took the drawing in Du Weize's hand and put it on the table, "This cannon is not used to shoot shells, but to shoot explosive packs, or it can be said to eject explosives packets." ”

"Catapult? What does Van mean to install a catapult under the gasoline drum, then put the explosive pack in from above, and then eject it out? Du Weize immediately understood what Liao Fan meant.

"Yes, that's it, but instead of a catapult underneath, I'm going to install a partition and seal it with gunpowder at the bottom, so that I can use the explosion of gunpowder to push the explosive bag out and ignite the explosive bag at the same time." This cannon made of gasoline barrels is called a flying thunder cannon, which is clear to the People's Liberation Army, but now it is used on the little devil, Liao Fan feels very cool when he thinks about it.

"This theory works!" After listening to Liao Fan's explanation, the eyes of the two people lit up, if an ordinary catapult is used, even if the explosive package can be ejected, it will not be able to hit far, if it is used gunpowder, it will be different.

Now the 33rd Independent Division is not able to make TnT, but it is still possible to make some yellow explosives and black explosives, and the most important thing is that as long as one of these cannons is successfully designed, they can mass-produce more in a short time, and the most important thing is that they do not use much material at all, and the cost is low, which is very in line with the style of the 33rd Independent Division.

Liao Fan discussed with the two of them some specific details of making the Flying Thunder Cannon, and then asked Chu Pengtian to go to the logistics department to ask Sun Boyong for some materials, and they began to make the Flying Thunder Cannon tonight.

"Brother Fan, I've put all the things in the yard next door!" Chu Pengtian reported to Liao Fan that the courtyard next door to the school was Liu Deyun's dormitory.

"Okay, I'll eat here tonight, and while we have free time now, let's get this cannon out first." Liao Fan said happily at Du Weize and Liu Deyun.

That night, after having a full meal, several people were busy in the yard, and several people gathered around to watch what Liao Fan and they were doing. As for Shen Zhengwen, after a few people had eaten, Liao Fan was called by Liao Fan to see the construction drawings of the power plant, but a few female students gathered around Liao Fan and them with nothing to do.

"Brother Fan, we still build an ordinary shooter, so that it is safe, if it is successful, we can also design another one with gunpowder under the bottom according to the method you said." Du Weize suggested on the spot that he didn't want to design a defective product when the technology was immature, in case it was not possible to blow up the chamber after loading the gunpowder, and they would really die before they could get out of the school.

"I agree with Du Weize's opinion, we use yellow explosives, which are not as stable as TnT, so we still focus on safety." Although Liu Deyun's understanding of weapons is not as good as Liao Fan's, they still have some understanding of explosives, so the two suggests that when the flying thunder cannon is caused, first use ordinary methods to try the power and effect, and if it is successful, then improve it into filled explosives.

"But what's good for this catapult?" Liao Fan asked the opinions of the two people, "The weight of this explosive package wrapped in yellow explosives is not light. ”

"Leave this to you and we, we'll do it!" A few female students on the side who were watching the excitement heard that Liao Fan was going to make a catapult, and immediately stepped forward to recommend herself.

"Oh?" Liao Fan looked up at a few female students, "You guys will do it?" It seems that the woman really doesn't let the eyebrows, so I'll leave this matter to you, and build a catapult according to the size of this gasoline can. Liao Fan pointed to the catapult on the side and said to a few female classmates.

A few people were busy until late at night, and the appearance of the flying thunder cannon gradually took shape, and then they just waited to see how the effect would be after the trial.

"It seems to be not bad, thanks to a few of you today, otherwise the three of us would have been busy until the middle of the night." Liao Fan praised a few people on the side on the spot, saying that the catapult was made by a few female students, and the catapult they had just experimented with was enough to catapult a stone seven or eight catties out of about thirty or forty meters.

Several female students heard Liao Fan praise them, and said a few polite words with a smile.

"It's hard for you two tonight, let's all go back to sleep early, and tomorrow morning I invite you to go and see the power of this flying thunder cannon!" It was already getting early, and a few people had to teach the children tomorrow, so the trial of the Flying Thunder Cannon could only be scheduled until tomorrow.

"Lu Liming beckoned the two soldiers, moved these things to the headquarters, and moved them to the open space in the back mountain early tomorrow morning." Liao Fan looked at the flying thunder cannon on the shelf, and felt a sense of accomplishment, this thing is inexpensive, and the most important thing is that it is lethal, it is estimated that it will be used on the battlefield in the future, enough for the little devil to drink a pot.

In the early morning of the next day, Liao Fan had already informed everyone about the test gun, and Liao Fan didn't want to show off anything, but to prevent the soldiers from hearing the explosion and panicking, thinking that the little devil had come in.

As Liao Fan expected, the flying thunder cannon was loaded with more than a dozen catties of explosives, which were thrown out more than 30 meters, and the explosion of more than a dozen catties of explosives was huge, blowing up the surrounding rocks to smithereens.

Looking at the scene of the explosion, several people were very satisfied with the newly created flying thunder cannon, but it was too close to the fight, more than 30 meters, and it could not play a decisive role on the battlefield at all, and could only be used for defense, not offensive at all.

"It's a pity that the distance is too close, if it can be projected to about 100 meters, this thing is much more powerful than using mortars to hit the little devil's turret, more than a dozen catties of explosives go down, and half of the little devil's turret and pillbox will be gone." Liu Deyun looked at the destroyed place at the explosion site and had to sigh at the power of more than a dozen catties of yellow explosives.

"Wait for us to go back and improve it, change it to install gunpowder at the bottom, as long as the sealing is done a little better, we don't have to worry about not going far, although we have an artillery battalion, but the flying thunder cannon can still play a lot of role before we show our artillery." Liao Fan was not discouraged, after all, the catapult made of wood was not strong enough, and if gunpowder was used, it would definitely be able to achieve the ideal state.

Just when Liao Fan was busy showing new weapons and building power plants, the little devil in order to take Changsha, the army was divided into three ways to attack Nanchang, Nanchang is the east gate of Changsha, if Nanchang is lost, Changsha will become the last barrier of Chongqing, if Chongqing retreats again, it can only be withdrawn to Yunnan.

On this day, Liao Fan was supervising and inspecting the power plant that had just been built, and the cement and steel bars used in the power plant were all obtained from the hands of the little devils.

"Report Brother Fan, we caught a spy on the periphery of Taihang Mountain!" A fighter found Liao Fan at a newly built power plant.

"Spies?" When Liao Fan heard the report, he thought he had heard it wrong, now in the strongholds on the periphery of Taihang Mountain, the little devils dare not send troops to garrison, so they can only arrange for the puppet army to be stationed, and the puppet army is under the deterrence of the independent 33rd Division, and it has completely become the gateway of the independent 33rd Division.

"Brother Fan, it was our patrol team who appeared, and the person who was caught was wearing the clothes of ordinary people, sneaky, and when our soldiers appeared, they also said that they knew Brother Fan, so we tied him up as a spy." The fighter continued.

"Where are you now?" Liao Fan asked with a frown.

"Now at the command, there are two fighters watching him."

"You'll know your post first."

Liao Fan fell into contemplation after ordering the soldiers to return, judging from the situation reported by the soldiers, this person said that he knew him, he must know him, but from outside Taihang Mountain, and the people wearing ordinary people's clothes, he didn't know a few people at all, out of Chongqing A few important people and the proprietress of Qi County, is there anyone else?

When he thought of Chongqing, Liao Fan was suddenly stunned, could it be that this person was really from Chongqing, at this time, ** was fighting fiercely with the little devil in Nanchang, Jiangxi, maybe it was really someone sent from Chongqing. Thinking of this, Liao Fan hurriedly walked towards the headquarters.