Guan Xiaoyun ran to the beach to pick up the rebound bracket, and was as careful as if he was holding a rare treasure: "Dean, this thing is amazing, just such a piece of wood can increase the range so much, Dean, what is the principle?" ”

Yuan Fang smiled and said, "You don't understand." ”

The red clothes puffed up and said, "How can we understand if you don't say it?" ”

Sang Rou, Yuyue, Ye Qingru, and Xia Yi all looked at Yuan Fang with blank eyes, looked at Yuan Fang with a chill, raised their hands and surrendered, and said, "I said, I said it's not okay." ”

After a pause, Yuan Fang was a little frustrated and said: "I really don't know how to describe this, it's pressure and equivalence or something, I really don't understand, really, I didn't lie to you, but I can tell you a rough idea, let's put it this way, it is simply described as airtight, before we only used shells, most of the thrust generated by gunpowder combustion was lost from the gap between the shell and the barrel, so the range of the shell would only be a few tens of meters, but with this butt, it was different, he could better close and preserve the thrust kinetic energy, and at the same time stabilize the shell, So that it doesn't mix before it is discharged, well, that's pretty much it. ”

Guan Xiaoyun nodded as if he didn't understand and said, "If you say that, this thing will be indispensable in the future?" ”

Yuan Fang nodded. Guan Xiaoyun's eyes rolled and asked, "Dean, is any wood okay?" ”

Yuan Fang thought for a while and said, "It wants to be strong, resistant to high temperatures, and there is nothing left, why are you asking this?" ”

Guan Xiaoyun smiled embarrassedly and said, "It's okay, I'll just ask casually." "The gunpowder is enough, everyone's interest is so high, Yuan Fang is not afraid of waste, and let everyone set off a cannon with his own hands.

In the past, Yuan Fang also experimented, and the sound of artillery was not unfamiliar to the navy on Changhuan Island, but today it feels a little unusual, because today's rumbling cannon sound is continuous.

Yuan Fang and they were having a good time, Situ Muran came over accompanied by Tian Erniu, and he saw the red clothes lighting the fuse from afar, Situ Muran saw Yuan Fang's experiment, and he was so frightened that he immediately crawled to the ground.

Saying a cannon sound, the expected explosion did not appear, instead of the cheers of the red clothes, Situ Muran stood up in embarrassment, circled around the cannon body several times, and finally asked in surprise: "Lord Yuan, succeeded?" ”

Yuan Fang raised his head proudly: "Of course, didn't you see it?" ”

Situ Muran looked at the sea and asked, "How far can you fight?" ”

Yuan Fang scratched his head and said, "I don't know, I haven't measured it yet, you came just in time, hurry up and let people get a few floats on the sea surface for reference." ”

Situ Muran agreed without hesitation, and ran back to arrange it in person, there was no way, this place was blocked by Yuan Fang, Tian Erniu and they didn't let any outsiders in, even if Situ Muran had to get permission or send someone to accompany him to come in, Situ Muran's adjutant was stopped outside this time, so Situ Muran had to go out to arrange the task in person.

Not long after, several small boats came to the sea area in front of Yuan Fang, according to Yuan Fang's instructions, one every five hundred meters, using small boats as a reference, Guan Xiaoyun ran back to get a box of cannonballs and enough gunpowder and fuses.

Everything was ready, and the ammunition was loaded, Yuan Fang took the torch and asked Situ Muran: "Do you want to try it?" It's very enjoyable. Situ Muran swallowed his saliva and shook his head vigorously, turned around and ran to a safe distance where Sang Rou and the others were. Yuan Fang pursed his lips disdainfully, lit the fuse, and then turned around and walked towards Sang Rou and them.

There was a loud bang, the fire snake gushed, Yuan Fang let go of the finger covering his ears and pointed to the sea in the distance and said to Situ Muran: "Look over there." "A dark shadow fell, smashed into the sea, and splashed a little wave.

Situ Muran's mouth opened wide in shock: "No, it won't, it's so far?" ”

After measurement, the range of the shells is about 3,500 meters to 4,000 meters, of course, this is not the limit, if you add more gunpowder, it should be able to shoot farther.

Then a few more shots were test-fired, the distance was about the same, and when Xia Yi made a record, Yuan Fang planned to test the limit of this kind of cannon, constantly increasing the filled gunpowder, and finally ended today's test perfectly with the explosion of the barrel. Xia Yi's records are very complete, all kinds of data are clear, and after Yuan Fang's preliminary calculations, the optimal dosage of this type of cannon was finalized.

This number is not the peak that the gun body can bear, although the more gunpowder, the longer the range of the shell, but the stability of the gun body itself will also change, simply put, the gunpowder is too much gunpowder vibration, which will affect the accuracy of the design, Yuan Fang finalized the standard is the longest range of the gun under the premise of stability, the range of the shell is a distance of 5,000 meters, which is more than twice the best heavy crossbow today.

The work of the cannon can finally come to an end here, that night, the blacksmiths worked overtime to create the base designed by Yuan Fang, and the next morning five cannons equipped with wheels and backseat shock absorbers were pushed to the test site in red and hung colors, lined up side by side, for other tests, of course, ironwood butts are also indispensable, Yuan Fang found a few carpenters from the navy's sappers who can work, and let them make a lot of butts.

For a whole day, the sound of cannons on the Long Ring Island has not stopped, after countless experiments, Yuan Fang and they no longer dodge after lighting the fuse, and stand next to the cannon with peace of mind, although it is more noisy, but it is also more exciting.

The base is a good thing, not only can stabilize the gun body, it is easy to move, but also the effect of cushioning the recoil is also very good, so the firing range has been increased again, reaching a distance of 5,500 meters.

After testing, the cannonball can easily penetrate the two layers of armor of the airship within 2,500 meters, causing penetrating damage, and at a distance of 2,500 meters to 4,500 meters, it can penetrate the armor of the airship.

Everything went well, but what made Yuan Fang a little depressed was that no one was proficient in geometry, so as to accurately calculate the landing point of the cannonball, so now he could only fire the cannon by feeling, but this was enough, with the current range and power, as long as the enemy was in sight, it would not be difficult to hit the target, not to mention that the hypothetical enemy was the opponent's airship, such a big thing, it should not be difficult to hit.

Time was limited, and after preliminary testing, Yuan Fang sent people to send various data and samples of the cannon to the military factory, so that Yan Xiong could organize enough manpower to manufacture it day and night, and then send it to Changhuandao in batches to equip airships and equip them with the air force and navy.

After Situ Muran got the news, he immediately ran to Yuan Fang and put forward his own requirements, as the commander of the navy, of course he had to consider the navy, and after some elaboration, Situ Muran's idea made Yuan Fang agree very much.

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