Yuan Fang handed over the test flight of the fighter to Ye Qingru and Xia Yi to be responsible for observing the statistics, and the navy sent ships to fully cooperate, and at the same time as the test flight of the fighter plane, the island was also lively, and the selected first-generation artillery officers were selected in groups of two and two, first listened to a theoretical lesson in the morning, and after keeping in mind the safety common sense that needs to be paid attention to, the live fire test began in the afternoon.

This test is a two-way test, the first continues to test the artillery, and the second is to select the feeling and feel from the live ammunition shooting of the artillery is better, no way, Yuan Fang does not know how to calculate the landing point of the shell, and what is the initial velocity, elevation angle, gravity, and acceleration, Yuan Fang has a big head when he thinks about it, so now he can only rely on his feelings, who feels good, and who hits accurately.

The five artillery pieces made by Yuan Fang before, plus the ten guns sent by the military factory this time, a total of fifteen artillery pieces, Yuan Fang took them all out to cooperate with the test, and as a result, an afternoon passed, and a lot of shells were fired and a lot of gunpowder was consumed, but the accuracy of these artillery pieces was really not flattering, which made Yuan Fang disappointed.

That night, Situ Muran found Yuan Fang, the two discussed, and the next day, more people joined the test, including many naval soldiers, this is what Situ Muran meant, when it comes to operating heavy crossbows, naval soldiers are no worse than anyone else, in a sense, it is more suitable for Yuan Fang's requirements.

For example, the navy's heavy crossbowmen generally shoot at the station ship under sail, and the design environment of the artillery selected by Yuan Fang is to conduct air combat on fighters and attack moving targets between movements.

Gunpowder is no secret in Changhuandao, but how the gunpowder came from is not clear to anyone except Yuan Fang, in order to keep it secret, Yuan Fang also put a smoke bomb, and unloaded large boxes of bulk gunpowder from the airship sent last night and came back this morning, giving people the illusion that these things were made somewhere before they were shipped.

There are many people participating in the test, and it is absolutely not enough to rely on Yuan Fang and a few of them to record data and personal results, so Tian Erniu selected more than 20 careful female soldiers to help, every three people are responsible for an artillery, one person records various data of artillery, one person is responsible for recording the results of test artillery, and the other person is responsible for supervising and counting the number of shells, gunpowder, and fuses consumed, and then these data are sorted out and handed over to Yuan Fang for review.

Yuan Fang, Sang Rou, Jieyue, Hongyi, and Guan Xiaoyun were also each responsible for a cannon, but after a morning when their ears were buzzing, Hongyi picked up, and Yuan Fang also found an excuse to run away, and this boring test was a kind of torture after losing the initial freshness.

Yuan Fang is not like Hongyi, he simply wants to stay away from the noise of those artillery fires, in addition to this reason, Yuan Fang also has another idea, that is, the fuse.

Starting from the military factory, the fuses used by Yuan Fang are all self-made rope-like things, and the burning of gunpowder is not stable, so more burning lengths must be reserved to ensure safety, but in this way, there will be a period of waiting after lighting the fuse, and the shooting of fixed positions and fixed targets is fine, just wait a few more seconds, but if it is the same in actual combat, it is possible that the shell has not been fired after aiming at the opponent, and the opponent will get out of the embarrassing situation of the firing angle, so, A more stable and secure fuse is also very important.

After the red-clothed escaped, she found that Guan Xiaoyun was still sticking to her post, and she was embarrassed to let Guan Xiaoyun leave her post without permission, so she had to wander around on the island alone, but it was not interesting to turn around, and later found that Yuan Fang ran back to the artillery base, and Xiao Nizi was really bored and followed, and then, and then the red-clothed who threw himself into the net was caught by Yuan Fang and studied the fuse together.

In a stone house, Yuan Fang stared at a disassembled fuse and pondered, wearing a red coat of metal heavy armor and sitting on the side depressed, for a long time, Yuan Fang did not move, the red clothes really couldn't stand it and shouted: "Brother, do you have to wear this thing on this hot day?" I'm dying of heat. ”

I don't know when, Hongyi no longer calls Yuan Fang Brother Yuan, but directly calls Yuan Fang 'brother' like Xiaomei and the others, Yuan Fang has no discomfort with this, as if it is as natural as a matter of course.

Yuan Fang glanced at the red clothes: "It's not for safety, it's not like you haven't seen the terrible explosion of gunpowder." Of course, Hongyi knew that the explosion of that thing was terrible, and he couldn't help but shudder at the thought that he was blown to pieces and didn't even have a whole corpse, and what scared Hongyi even more was that he was not killed but was disfigured, which was worse than death.

Yuan Fang beckoned and said, "Don't just sit still, come over and help think of a way." Hongyi sighed, leaned to Yuan Fang's side, and looked at the fuse that was dismantled on the table, and the two of them were in a daze together.

After a while, Hongyi asked, "Brother, why is this thing sometimes fast and sometimes slow and unstable?" ”

Yuan Fang was not angry and said, "Do you still need to ask?" Of course, the gunpowder was uneven. ”

Red-clothed reminded: "Then just make it even." ”

Yuan Fang rolled his eyes and said, "It's easy to say, but how can you get even?" ”

Redcoat then asked, "How did you make this thing?" ”

Yuan Fang said patiently: "Now the oiled paper that has been brushed with glue is sprinkled with gunpowder, and then wrapped around the silk thread that is also stained with gunpowder powder, and when it reaches a certain thickness, it is the fuse." ”

Hongyi tilted his head and thought for a while, and said, "In other words, whether it is the gunpowder on the oily paper or the gunpowder on the silk thread, it is uneven, right?" ”

Yuan Fang nodded: "Well, I'm just thinking about this problem now, how to make it even." ”

The red clothes were so hot that they couldn't stand it, so they took off their helmets and wiped their sweat while asking, "As long as it's even, is there any requirement for how much gunpowder there is?" ”

Yuan Fang thought for a while and said, "Of course there is, but that's later, let's solve the problem of uniformity first." ”

The red coat pouted and said, "This is not easy? ”

Yuan Fang was surprised and asked, "Do you have a way?" ”

The red cloth said proudly, "Of course." ”

Yuan Fang was overjoyed, leaned over and asked, "What way?" ”

Hongyi pointed to the balance on the table: "Weigh." ”

Yuan Fang looked at the balance blankly, then thought of something, shook his head and said: "It doesn't work, even if a unit of gunpowder is filled to a certain length of fuse, it still can't be absolutely average in every distance." ”

Hongyi shook his head and said, "I didn't mean that, my idea is can I change the way?" ”

Yuan Fang was confused: "Another way?" ”

Hongyi nodded: "Brother, does the fuse have to be a combination of oil paper and silk thread?" ”