Following the 30mm small-caliber infantry artillery that has appeared, the leading artillery researchers have accumulated some artillery design experience and tried to scale up the structure of the 30mm artillery in proportion. With the initial starting experience, the artillery design team had some confidence before starting to design larger caliber artillery.

Today's 30mm small-caliber infantry support artillery has been adjusted through multiple iterations. After material processing and engineering optimization, it can fire 25 rounds continuously without causing damage to the barrel.

Ji Lin provided them with a design idea of ​​the ratio of caliber to caliber to see if it would provide some direction for their artillery design.

Rather than simply enlarging the proportion.

Then continue to throw money into it. What is scientific research? Scientific research is endless burning of money. Until a group of skilled scientific researchers are burned out - that is not the end of burning money, but the beginning of burning more money!

The rapid advancement of multiple projects, each step forward in each project corresponds to the disappearance of the output value of dozens of acres of farmland, and the cost of the materials they use is ten times or even a hundred times higher than the salary Ji Lin gave them.

Even so, the dean still ran to his office every day to ask him for people and money.

He first had a vehicle platform, so he could design the artillery according to the vehicle platform.

Unlike the light infantry support artillery that needs to move forward with the infantry, this type of artillery is designed to rely only on airships for transportation, and it is particularly loose in weight.

The load capacity of the artillery pod is the same as that of the infantry pod, with a maximum load capacity of 2.2 meters, and the remaining 3 meters of weight are protected by the thick and strong pod of the airship.

Excluding the ship-borne artillery, the weight occupied by the ship-borne artillery ammunition is determined by installing two artillery in one artillery pod... Their artillery design can reach up to 700 kilograms/0.7 meters.

With the weight allowance, the gun barrel design was quite wild, and none of the designs submitted by the design team was less than 600 kg/0.6 caliber.

Almost everyone piled materials on the barrel without restriction to offset the chamber pressure and the damage to the barrel caused by a large amount of charge.

"We use 75 mm, 25 calibers, and a total length of 2 meters. Including the total weight of the bracket, it is 650 kg, with an effective range of 800 meters and a maximum range of 1500 meters. The first batch has a total of six guns, one pod, and the remaining two pods carry shells and gunpowder."

The researcher saluted him and told him the answer he was going to give.

75 mm, about 1 inch six-pound gun.

Ji Lin thought about it, and saw the Seagull-class airship that had begun to land in the distance, and he felt a little itchy.

He hadn't come into contact with normal artillery of this standard caliber for a year. Although the 75mm artillery is less powerful, it is still a standard artillery developed and produced by the leader.

It can also fight against thicker shells.

But if it is a steel-made thing like the Governor's mecha, or the giant ancient tree with thick bark owned by Li Yan. The power of 75mm is extremely limited, and it is considered successful if it can break the armor.

You have to wait until the professional giant 152 and 203 smoothbore guns appear to effectively fight them... or just take out the 400mm or above mortars and smash them to death.

It's a pity that Ji Lin doesn't have a special mortar technology tree, and only puts technology on artillery.

"Let's go, take me up and try it. Let's set up two targets to try it out."

Ji Lin smacked his lips, with joy on his face, and called the officers to get on the ship with him.

Rub it.

"Charge, falling speed, range, have you made the corresponding tables?"

He walked to the pure black cast barrel, which was engraved with symbols that faintly flashed with purple light, which was very wonderful. It seemed that there was life flowing in it, and the substandard steel was enhanced in a special way to show higher structural strength.

The sliding and rotating bracket supporting the barrel was also engraved with corresponding symbols and floating stones to make the gun carriage easier to rotate, which shows that they have put in a lot of effort.

Character learning...

"Done!"

The engineering student was stunned and took out a small notebook from his arms and handed it to Ji Lin.

Ji Lin quickly glanced over the contents written on it and nodded with satisfaction. The researchers conducted the test with the prescribed medicine according to their own requirements, which meant that the soldiers did not need to worry about adjusting the amount of medicine bit by bit.

Although he was flattered to let this student teach him how to operate the 75mm muzzle-loading gun, he still instructed Ji Lin cautiously on how to operate the 75mm muzzle-loading gun. They completed the loading, measuring the distance, and placing the charge step by step.

Aim and fire.

On the distant ground, small camps were being built with the remaining building materials, with target groups of 200, 400, 600, and 800 meters each.

Limited by the shooting window of the pod, the firing angle of the 75mm shipborne gun installed on the internal gun mount was also limited, with only 10-15 degrees of adjustment up and down and right. Only by reducing the charge can the shells be adjusted to hit targets at different distances.

Unlike the firing of muskets and 30mm guns, the 75mm is a real gun. When firing, there is a dull and transparent vibration transmitted through the thick shell of the pod.

The rotating bullet was fired in the bursting flames, losing the accuracy provided by the rifling, but also having a higher chamber pressure and initial velocity, accurately penetrating and smashing the temporary tents built with wood in the distance.

400 meters, 12 out of 16 shots, 75% hit rate.

The officers who heard the sound of this kind of artillery for the first time looked at each other in surprise. This was their first time coming into contact with artillery of this caliber. The researcher from the School of Engineering regarded it as normal. He tested the firing effects of several rounds of different artillery every day.

Ji Lin had a small problem...he forgot to equip the soldiers with sound-isolating earmuffs.

The charge of the 75mm gun is not likely to directly cause serious damage to human hearing, but if there is long-term close contact, no one can be sure. It is better to equip sound-isolating earmuffs.

Taking the pen and paper handed over by the officer, Ji Lin wrote down his suggestions and improvements on the new 75 gun - he also had to start writing artillery drills for the leader, and his rare rest time was about to disappear again.

He was extremely satisfied with the brand new artillery, but unfortunately it was still a little less powerful.

If you move a 120mm cannon...

‘75mm ship-mounted front-mounted smoothbore gun’

'Range: 800'

'Weapon power: 175'

‘Crystal Mine Gunpowder: It provides armor-breaking power and range, but the overheating time of the barrel caused by each shot is extended. ’

‘Armor-piercing damage: This unit has a significant penetration effect on high armor when using single-ended projectiles. ’

‘Shotshot charge: +100% damage to low-armor units, -50% effective range. You don't want this thing firing on your infantry line, trust me. ’

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