Unlike the 1629 smoothbore gun, this hexagonal gun retreated violently as it fired, and the hoe violently shoveled two deep grooves in the sand, and the huge recoil pushed the two front wheels of the entire cannon to jump. Pen, fun, and www.biquge.info

The patriarchs couldn't help but look at the firing of this cannon in amazement, "The recoil is too great, right?" "That is, the gun carriages are all jumping, and the range must be much farther than that of smoothbore guns."

"That's right," Lin Shenhe finally caught something that excited him, "This is without a recoil buffer device, you must know that all the recoil is directly on the gun carriage, so the impact of recoil on the whole gun is more obvious." This is a demonstration gun, and a buffer device will be installed when it is officially produced. ”

"What's the range?" Bu Zhongfu completely ignored Lin Shenhe's excitement, his eyes stared into the distance and asked, from his position, he happened not to be able to see the landing point of the cannonball. Beiwei on the side raised his right hand and gave a thumbs up, "It's about 13,400 meters." ”

"You can also use the eye-jumping method on this sea? I don't have any references. Bu Zhongfu couldn't help laughing, Beiwei pouted and said, "This thing depends on intuition, it should be like this distance." ”

Soon, the naturalized civilian artilleryman with a one-meter rangefinder on the side loudly reported the distance parameters, "Report to the chief!" The shell landed at 1,580 meters! ”

The elders who came to watch the cannon all let out exclaims, and Beiwei couldn't help but say a little proudly, "I said it, basically guessed not how far it was." ”

However, no one next to him paid attention to him, and they all rushed to Lin Shenhe's side and asked, "Old Lin, what is the maximum range of this cannon?" "How much does it cost?" How long is the manufacturing cycle? "Compared with the 1629 smoothbore gun, how many times can the firing range be exceeded?"

Lin Shenhe was very satisfied with this reaction, you must know that the hexagonal rifle just now was far from achieving the expected effect, and he was very unhappy, and it was quite good to find some sense of accomplishment here in the artillery. He pressed down with both hands, making everyone a little quieter, and pointed at Bu Zhongfu, "Chief of the General Staff of the Navy, you can ask first." ”

Bu Zhongfu squinted his eyes and looked into the distance and asked, "What was the elevation angle of this cannon just now?" Lin Shenhe looked back, "Five degrees." ”

"And what's the maximum range?" Bu Zhongfu also looked at the three or four gunners on the gun position not far away, who were struggling to push the gun back to the firing position, and continued to ask.

Lin Shenhe grinned, "The range can reach three thousand meters when the elevation angle is fifteen degrees, and it can reach about four thousand meters when the double propellant is launched." ”

"What are the types of bullets that can be fired?" Li Jieqi didn't wait for Bu Zhongfu to continue to ask, and asked directly, "Is there a big difference between range and ballistics?" ”

"We just fired a solid shell, and the shell is about three kilograms, and the range is the largest; In addition, there are high-explosive shells, the fuse used is the same as the 1629 smoothbore gun, the warhead is 4.8 kilograms, the range is only about four-fifths of the solid bullet, the ballistic arc is slightly larger, in addition, we are trying to produce a bump fuze, but the spring material is not too good, the firing rate is only about 40%, and it cannot fire on the sand and mud at the soft point. Lin Shenhe smiled mysteriously when he said this, "In addition, there are four kilograms of shrapnel, you know." ”

"What kind of fuse is used for shrapnel?" Li Jieqi continued to ask, "Is it also a timing fuse?" ”

"Yes, that's right!" Lin Shenhe snapped his fingers proudly, "The warhead of the shrapnel is loaded with about a hundred grape shells, and the elevation angle should be raised as high as possible when the shell is fired, and the air explosion when the shell falls can show the power best." As he spoke, he shouted at the launch position outside, "Launch group, reload, one shotgun, a kilometer away." ”

"Yes! Heads! One shotgun! A thousand meters away! The gunner repeated, inspecting and reloading the cannon with the loader. When the reload is complete, the gunner raises the elevation angle, the observer reports the required parameters, and then everyone enters the concealed position, "Fire!" ”

After not hating the enemy, the ghost knots the battle, and the enemy is alone

With a loud "boom," thick gunpowder smoke erupted from the muzzle of the gun, and in the smoke of gunpowder, everyone could see with the naked eye that a long cannonball flew out of the muzzle, rose straight into the air, and then folded down in a parabola, and when it reached about forty or fifty meters above the sea surface, it suddenly exploded in the air.

The cannonballs exploded in the air and rose up like a dark cloud, and the deadly grapeshothulet bombs slammed into the sea like hailstones, sending columns of water below the target in an instant.

"Hah!" Bu Zhongfu shouted excitedly, "This is a good cannon!" How much does it cost? ”

"How much does it cost?" Lin Shenhe hesitated slightly, "The cost is a little higher than that of the 1629 naval gun, about one-fifth higher than the cost, but the cost of the shells is much higher." ”

"Why are shells more expensive?" Immediately, there were questions from the elders who did not know what to do. Lin Shenhe shrugged his shoulders, "This can't be helped, you must know first, the production process of hexagonal shells is slightly more complicated, and the warheads of long cylinders are more cumbersome to process." ”

"Not really, right? Aren't they all cast? "That is, if you make a mold and pour molten iron into it, won't it end?" The processing is not cumbersome, right? In addition, both shrapnel and high-explosive shells should be stamped, right? It shouldn't cost much, right? ”

"It's indeed casting, but you have to know that our boss is difficult, the material is not up to par, often the cast shells are always cold on the outside and cold on the inside when they are cooled, so the weight inside is uneven," Lin Shenhe couldn't help but pour bitter water in front of everyone, "The cylindrical shell is rotating, if the center of gravity is wrong, it is easy to cause the trajectory to be not straight, and it is a trivial matter to hit the target accurately, if there is a deviation when accelerating in the barrel, it is easy to cause an accident." ”

"Then there is no solution?" Bu Zhongfu couldn't help frowning, "I remember that this was the same problem when I used to cast cannons, right?" ”

"Yes, when casting a cannon, the outside is also cold first, and the inside is cold, so the entire barrel is prone to the density of the inner and outer tubes to be different, and it will be easy to explode and other accidents when the cannon is fired. However, our current solution is to cast the cannon with a water-cooled gun bore, so the strength of the inside and outside is relatively close. In addition, this method of casting cannons is fast, which is several months faster than the clay casting method of this time and space, so the output of our artillery barrels is quite high. Lin Shenhe shouted outside as he spoke, "Load high-explosive bombs, the distance is 1,300 meters!" ”

The cannon commander outside repeated loudly as a new round of reloading began.

With a loud bang, the cannonballs whistled out and flew straight into the distance, exploding in the air near the sea a few seconds later, and shrapnel swept through the smoke like a dark cloud covering the sea surface with a diameter of about 10 meters. The sea water was washed out by the shock wave three or four meters high, and the bitter sour hula filled with the shells suddenly threw the flames onto the sea, and it burned for a while before it was extinguished.

"As you can see, the explosion range of high-explosive bombs is about eight meters to ten meters, and the trajectory of high-explosive bombs and solid bombs is relatively close, and they are relatively straight, especially suitable for dealing with large targets," said Lin Shenhe smiled at the veterans of the navy department, and then nodded to the veterans of the army, "The accuracy of dealing with cluster targets is also quite high." ”

"Well," Li Jieqi nodded, thought for a moment and asked, "What is the lifespan of the body?" The elders next to him nodded unconsciously, you must know that although the 1629 smoothbore gun can completely defeat the natives of this time and space in terms of range and rate of fire, especially in the firing range, it can directly beat the indigenous forces, but the life of the body is not much, generally speaking, the barrel is close to scrapping if it is about ten to one hundred and thirty rounds, and it is necessary to stop firing about ten rounds in a row and wait for the gun to cool down. Such a thing is very fatal on a rapidly changing battlefield, and the yield is not high. The weight is large, and the number of military horses in the Senate is not enough at this time, and soldiers are even needed to replace the animals when transporting, and a platoon is equipped with three doors at most.

"Look at this cannon outside," Lin Shenhe said and led the elders out of the bunker and came to the artillery, "This cannon has fired more than 300 rounds, and now there are no cracks and pores on the artillery, which shows that our metallurgical capacity has reached an extremely high level, in fact, we are still testing the life of this artillery, to be precise, it is not certain, it can only be said that it is at least more than 300 rounds." ”

The patriarchs let out exclamations one by one, some came over and patted the cannon gently, and some came to the muzzle of the cannon to see the hexagonal muzzle, Li Jieqi circled around the cannon with satisfaction, turned around and asked, "Since our metallurgical level has reached an extremely high level, why can't we get breech guns?" Bu Zhongfu smiled on the side, and also asked Lin Shenhe, "That's right, can't the problem of the breech gun bolt be solved?" ”

"Can't ...... yet" Lin Shenhe spread his hands, "You must know that the instantaneous chamber pressure when the gun is fired is very high, and our gun bolt material is still difficult to grasp, not too brittle or too soft, if the material is soft, it is easy to deform the gun bolt, and it cannot be opened after reloading after launch; If the material is too hard, it will be brittle, and it may break directly during firing and cause accidents. I have been discussing this material problem with Li Jin, but everyone must be prepared, we may continue to use breech-loading guns for a long time, after all, the formula of the bolt material can not be found in the big library, we can only match it little by little according to the metallography data, this is a long-term and tedious work, and there is no shortcut to it. ”

The patriarchs all sighed in unison, everyone knew that although the breech-loading gun was not much different from the breech-loading gun, it was more than eight streets away from the breech-loading gun in terms of loading. Especially on naval ships, in the cabin that is not spacious enough, the gun needs to be retracted first, loaded and cleared before the next launch, and it is time-consuming and labor-intensive to reset and re-aim before launching, which can easily lead to mistakes in the rapidly changing battlefield, and once an accident occurs, it is very likely to cause irreparable losses. Therefore, from the very beginning when it was decided to develop armaments, breech guns were developed as a long-term goal of the Senate's weapons development department.

"So how long is the manufacturing cycle of this hexagonal cannon? How long does it take for a gun barrel to go from ingot to finished product? "Bu Zhongfu already has a good impression of this kind of artillery, and you must know that the thirst for rifled guns has always been a pain in the hearts of the naval forces. The firing range of ordinary smoothbore artillery is only more than 300 meters, even if the 1629 smoothbore gun is known as the best in smoothbore guns, the ultimate firing range is only 1,800 meters, and it is still achieved by filling in double propellants during test firing, if it is only ordinary propellant, the firing range is generally only within one thousand meters, and because there is no rifling, the flight trajectory of the shell sometimes undergoes some inexplicable changes. What's more, on the undulating sea, the ship is swaying, aiming is a very troublesome thing, whether it can hit the target or not, in many cases even have to gamble on character, in the kind of combat mode at sea that is an inch long and an inch strong, the range and trajectory are the biggest determining factors in determining whether a battle can be won. "How much can you produce per month?"

Lin Shenhe was stunned for a moment, looked down at the small notebook he was carrying, and after looking at it for a while, he replied, "The body tube is directly produced by the cannon foundry, and this kind of cannon is not the same as the 1629 smoothbore gun, so the entire production process needs to be readjusted." It basically takes 16 days for a cannon to go from the beginning to the end of production, plus test firing and flaw detection and inspection, it will take about 20 days. ”

"How long is it going to take?" Bu Zhongfu hesitated for a moment, "How long is the production cycle of a 1629 smoothbore gun?" ”

"That's about twelve days, but ......" Lin Shenhe's words were quickly interrupted by Li Jieqi, "Don't chirp crookedly, our army will definitely have this artillery, at least nine first, equipped with an artillery company first." ”

"Hey!" Bu Zhongfu hurriedly pushed Li Jieqi, "This is a naval gun, what are you guys doing here?" What we want to use to defend the sea frontier is, of course, to give priority to equipping the navy, and your army platoon will go behind. ”

"Fart!" Li Jieqi straightened up without showing weakness, and shouted at Bu Zhongfu with a red face and a thick neck like an attack, "Your navy says to defend the Senate every day, but what did you do? In the battle to defend the port of the East, it is nothing more than sinking a battleship, our army not only sank two battleships, but also has to deal with the enemy on the ground, we have to wipe our ass for the things you didn't do well, and you also grabbed the budget and equipment with us all day long, what do you say you have done? ”

"What?" Bu Zhongfu's eyes widened suddenly, "What did we do?" We were defending the sea, was it our naval radar that day that first spotted the enemy? Are we going out to find out the hostility? We are capable enough to sink all the ships, but we only put them ashore in order to capture more ships, and you have to say that against the enemy who came ashore, not only your army, but also our marines fought valiantly! ”

Wu Di and Xue Ziliang glanced at each other, and hurriedly walked to the side together, still talking about today's weather hahaha and other unnutritious words.

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