The firing of a mortar is equally simple, first calculating the distance from the target, which requires knowledge of trigonometric functions; After determining the shooting elements, the direction angle and inclination angle of the gun are determined according to the shooting table, and the angle measuring disc on the gun body can be adjusted with a heavy hammer.

Of course, sometimes there are also issues to consider, such as wind direction and humidity.

The three mortars were used to draw up the firing table...... Wanshida watched as several technicians in blue overalls were preparing to fire, each mortar was manned by four technicians.

Is it safe enough? Wanshida was a little worried...... None of you have ever actually launched.

Song Ziqiang seemed to see his worry, and said with a smile: "I'm not stupid, it's a measuring shell with propellant!" ”

So that's the case, Wan Shida walked over directly, lying on the sandbag and watching them fire.

The cannon was so simple that the technicians quickly began firing ...... "Tom! "Tom!" "Tom!" , shells rushed out of the muzzle with fragments of the shattered air-closed ring and flew into the distance.

Those technicians are not stupid, after every shell, they quickly squatted down to avoid the fragments of the closed air ring hitting them, don't look at it as a rubber part of Eucommia, if you want to be hit on the head by it, an egg-sized green bag is indispensable, and if you don't get it, you will die.

This is also why the military was not found to test the gun, only the technicians involved in the manufacture knew best.

Song Ziqiang and Wan Shida held binoculars to observe the impact point------ which can hit four kilometers at the farthest, which is not bad.

Song Ziqiang said: "You can add some additional projectile packs, and you can hit up to seven kilometers!" ”

Wanshida said: "Enough, safety first!" ”

This is the truth, Wang Defa and Zhang Guoan have been running the Liuqiu Technical School for nearly ten years, and it stands to reason that it can train tens of thousands of technicians------ but after Song Ziqiang selected it, he only found thirty-seven assistants who could help him, and he barely formed a team.

Song Ziqiang commented on their technical level and said: "At their level, if you are in that world, if you give 2,000 yuan a month, it would be good to be able to manage a meal at noon, and you can only take two days off a month!" ”

Wanshida patted him and said, "The people who started the processing plant are all black-hearted!" ”

"If you don't understand------ it's hard to start the boss of the processing plant, and it's hard for everyone to ------ over there."

The technician's firing movements have developed from rusty to proficient, and later he wants to play the rhythm.

Song Ziqiang didn't let it at this time, this was suspected of being a waste, he shouted: "Let's make a unified shooting table first, your firing action is already skilled enough!" ”

As soon as his voice fell, the technicians immediately settled down.

To be honest, in the Liuqiu Military Factory, in the team he formed, no one disagreed with him Song Ziqiang!

This is definitely not because of status, but because of his skills...... Machining technology really varies from person to person.

The special-shaped parts that Wang Defa can't process are easy for Song Ziqiang, and they are processed with the same general-purpose machine tool with a cigarette roll in his mouth!

Five filaments of precision!

Song Ziqiang said proudly to the stunned technicians at that time: "Without this accuracy, you want to engage in diesel engines?" Dream on......"

What is a diesel engine?!

Well, there is no need for Song Ziqiang to say it to them for the time being...... There is no physical object, and they don't understand it.

But Song Ziqiang's technology amazed those carefully trained technicians, it turns out that the machining industry is so profound, not just learn to operate.

But Song Ziqiang also knows in his own heart, and his personal ability is still limited.

If he made it himself, he would have to spend at least 50 to 70 hours to build a 15-horsepower diesel engine, just the fine turning and milling of cylinder castings, the machining of crankshafts, etc., which are not small parts, and he will spend more than a dozen jobs at every turn!

This is meaningless------- the best way is to find a processing technology that is most suitable for the moment, not to achieve the level of assembly line processing, as long as it can save his own work.

For example, if he can produce a 15-horsepower diesel engine in 30 jobs, he can officially start work!

Therefore, how to simplify the process, professionalize the processing technicians------ and then use the method of fine grinding and fine turning and milling to get it when the final assembly is a very brain-consuming thing.

It is different from the medium and high pressure steam engine, which can solve 90% of the problem with stupid, stupid and heavy methods.

Of course, the fifteen-horsepower diesel engine he wants to make is almost 300 pounds------ and it will make people laugh to death in that world!

There is really no way to do this, he has no energy to make more alloy parts for the time being, so he can only use thickening and enlargement to deal with it.

So, during the period when these two products were not yet available, he certainly had some time to work on such simple weapons as mortars.

In the next step, Song Ziqiang was ready to make a hand-cranked Gatling machine gun------ he rejected Wu Dapeng's suggestion to make a Makqin machine gun, although he could make it if he wanted to.

Song Ziqiang said:

"You stupid, that Makqin is a pig who swallows bullets!

At our current processing level, at most we can make a bullet coated with copper and lead, and we can't make a copper-clad steel plate at all, and a bullet is a few pennies!

Besides, we basically process it by hand, and the bullets we produce in one day may not be enough for it to shoot in a few minutes------"

Wu Dapeng could only keep his mouth shut, he never argued with Song Ziqiang about technical equipment, and honestly continued to engage in his religious affairs.

Wan Shida can say a few words, and he is also in favor of making a hand-cranked Gatling at this time.

This weapon has a certain bullet output density and a simple structure, so there will be no malfunctions in the parts of the firearm, which is more suitable for this time and space.

Of course, it has the problem of being bigger, heavier, and less accurate, which is also inevitable.

It also has a fatal flaw that the soldier who controls and rotates the handle must have a very good psychological quality, and must always rotate the handle at the same speed in the face of the enemy's fierce attack, so as to ensure that the feeding speed and the firing speed are consistent.

This problem is also easy to deal with, and leave it to the army to solve it on its own.

Song Ziqiang drew a design drawing of the hand-cranked Gatling in his spare time and gave it to Wanshida to see.

Hehe, this guy is more like a two-wheeled cart, and the total weight has already reached one hundred and twenty-five kilograms!

It consists of six barrels and is expected to have a rate of fire that can reach one hundred and twenty rounds per minute!

It has a separate steel chamber------ which is separate from the barrel.

The machine-gun shooter rotates the barrels, which are evenly arranged along the circumference, by shaking the crank, and the chambers filled with ammunition enter the locking slots behind each barrel from the feed hopper.

When the barrel is turned to a certain position, the firing pin fires the ammunition.

And when the barrel is turned to another position, the chamber after the shot exits the machine gun.

The chamber can be reused, and the reloading, firing and unloading of 6 rounds can be completed sequentially with the barrel rotated for one turn.

In order to solve the problem that the independent chamber and the running chamber can always be coaxial, Song Ziqiang designed a conical chamber, which makes the diameter of the rear part of the chamber larger, making it easier for the bullet to enter the barrel.

As with the five-wheeled pistol, this machine gun may not be very airtight.

Wan Shida watched at the time, and at the same time made up his brain, the machine gun may have not been fired for two minutes, and several machine gunners were enveloped in smoke from the gunpowder.

Hey------

Song Ziqiang looked at him and smiled, and said, "It's no problem to hit three or four hundred meters away!" What are you laughing at? Are you going to do it?! ”

"No, no, you're good!"

Wu Dapeng later looked at the prototype of the hand-cranked Gatling machine gun, and he patted Song Ziqiang on the back and praised it, saying: "It's good, it's still you!" When the time comes, use it to kill the cavalry!! ”

Song Ziqiang was beautiful, and he asked, "Have you talked to those monks and old Taoists?!" ”

Wu Dapeng nodded and said, "Okay, they support our approach, and they also promised to go to those colonies to develop------

Song Ziqiang immediately said: "How can it be called a colony? It's our land! ”

"Yes, yes!"

PS: Thank you for the reward from the book friend Australian Lao Wu.