In the evening of the same day, Mu Feng was eating while reading Neptune's printed summary:

The basic model is a single-mounted 155mm electromagnetic gun, with an energy conversion rate of 75% and a maximum muzzle kinetic energy of 290 megajoules.

The data measured on the 055 all-electric propulsion improved missile destroyer is divided into three typical gears according to different maximum muzzle velocities.

Upscale.

The muzzle limit muzzle velocity is 10 times the speed of sound, the maximum firing range is more than 600 kilometers, and the effective firing range is 400 kilometers.

When the ship is parked, the energy supplied by the hull power system can support a maximum rate of fire of 25 rounds per minute.

However, due to the limitations of energy storage, the efficiency of energy supply equipment, and the bearing capacity of the barrel and shells, the actual maximum rate of fire is 12 rounds per minute.

When the hull is sailing at a speed of 35 knots, it is capable of maintaining a rate of fire of 10 rounds per minute.

When firing at 10 times the muzzle velocity of sound, the muzzle kinetic energy is too large to be used for the time being.

Mid-range.

The muzzle velocity of the gun is 7 times the speed of sound, the maximum firing range is more than 400 kilometers, and the effective firing range is 380 kilometers.

The maximum rate of fire is 20 rounds per minute when the hull is sailing at 35 knots, and the theoretical maximum rate of fire when firing at a stop is 40 rounds per minute, and the actual maximum is 25 rounds per minute.

Low.

The muzzle velocity of the muzzle is 5 times the speed of sound, the maximum firing range is more than 260 km, and the effective firing range is 200 km.

The maximum rate of fire is 40 rounds per minute when the hull is sailing at 35 knots, the theoretical maximum rate of fire is 100 rounds per minute when the ship is stopped and firing, and the actual maximum is 50 rounds per minute.

At the bottom of the overall data report is the dispersion and detailed data of shells in each state, and Mu Feng can only understand a conclusion.

Finally, there is the direction of upgrades and improvements.

Upgrade and improvement direction 1:

Continue to improve the efficiency of energy storage equipment, improve the barrel and shell endurance, and strive to achieve the theoretical maximum rate of fire when the ship is parked in three gears.

Alternatively, add a set of energy storage equipment and a gun barrel at the same time, although it takes up extra space, but can directly maximize the use of energy.

Upgrade and improvement direction 2:

Further improve energy utilization to a target of 90%. The higher the energy utilization, the less energy is lost and converted into heat, which helps to improve the rate of fire, accuracy, and guidance ability.

Upgrade and improvement direction 3:

Research new shell materials to create guided projectiles that can withstand 10 times the muzzle velocity of sound.

After reading the report, Mu Feng thought about it for a while, in the hypersonic state, the resistance of the shell material is particularly important, and the electromagnetic cannon shell eats more material than the barrel.

On the Ship's Niang Technology Tree, the difficulty of developing new materials is countless times lower than that of the earth.

If you don't know the direction, you can try and experiment in a way that costs almost nothing and doesn't consume much time.

But even so, there are still no materials that can achieve guidance at 10 times the muzzle velocity, which is really difficult.

If it can't be guided, the range data of this electromagnetic gun at 10 times the speed of sound is just good-looking.

The hit rate against battleships at a range of more than 400 km did not exceed 10%, and even worse against destroyers.

Although the data at 7 times the speed of sound is already very good, the material at 10 times the speed of sound still needs to be done, otherwise when the next generation of supersonic anti-ship missiles is made in the future, the guidance problem will still be a troublesome matter.

Guidance materials at hypersonic speeds can only be done slowly, and Mu Feng decided to solve the first small problem first.

Doubling the energy storage equipment and adding a cannon barrel only requires a small scientific research plan to temporarily maximize the effect of the electromagnetic gun.

Mufeng directly entered the system and established a corresponding scientific research plan, and the scientific research consumption was only 200 points, and Mufeng directly consumed its own scientific research points.

After dismantling the propellant warehouse, the space inside the hull is also sufficient, and after the single tube can reach the theoretical rate of fire, it can be dismantled and replaced with a fuel warehouse.

Mufeng directly entered the system, and set up a plan for the production of 10 sets of twin 155mm electromagnetic gun and energy supply systems for the equipment of the manufacturing center.

After all this was done, Mu Feng put down the report and looked up at Sirius and Neptune opposite:

"Tomorrow and the day after tomorrow, you two will rest, and after I put the electromagnetic cannon on everyone, I will take Sirius to familiarize myself with the environment of the headquarters, and Neptune will follow, right?"

Sirius still had a mysterious smile on his face:

"Sirius is certainly fine, and my stupid sister shouldn't have a problem either, so Sirius decided to accept the commander's invitation."

Mu Feng controlled his desire to complain, nodded with a smile and continued to eat.

And Neptune next to him blinked, and said with a little confusion:

"But, but Commander, are you going to take us two sisters with you? Is this the legendary Sister Double Fly? This is really big news! ”

"Oh!" Sirius also showed a look of sudden realization, "I see, Commander, you are so greedy, so what is the headline for the next issue of the Minato Daily......

Mu Feng's face was expressionless, and when he looked up, two brains collapsed.

Although the personalities of these two sisters are very different, they are definitely in the same vein in doing things.

Mu Feng finished eating, and first went upstairs to assign a room to Sirius.

Now there is no choice, only the last room is left, but the conditions are the same, all the equipment is brand new, there is no need to worry about the accommodation conditions.

After Sirius entered, he looked around, and then nodded earnestly:

"The conditions here are very good, Sirius is very satisfied, thank you for the Commander's care."

Mu Feng smiled and rubbed Sirius's head:

"If you need anything, remember to tell me, after a busy day today, just rest early, and after dinner early tomorrow morning, I will take you out with Neptune."

Sirius nodded earnestly again and said, "Commander, you are really a very responsible commander. ”

"Haha...... It's okay, I'll go first......"

Mu Feng smiled a little embarrassedly, waved goodbye, and left Sirius's room and came to the hallway.

Mu Feng sighed, he also changed his past habits because of Liaoning's reminder, so he really took care of and guided the newcomers Kunlun and Sirius.

But it is precisely like this, let Mu Feng think back to the past, for Lanzhou, Yiwu, Hulun, and a few 22 people, he didn't take them seriously and responsibly at that time, and now he feels a little indebted to them from time to time, and then he began to think about how to find a way to compensate for it.

Mu Feng thought in his heart, walked to the door of the Nanchang room, knocked on the door and entered.

"Commander!" Nanchang had just replaced himself with an electromagnetic cannon, and now he was in high spirits, when he suddenly saw Mu Feng coming to him at night, he was a little surprised, "Come to me at this time, is there anything special?" ”

Mu Feng smiled and nodded: "It's still about the electromagnetic cannon tested this afternoon, didn't we find out at that time that we can't maximize the energy of the hull at the moment?" ”

Nanchang nodded: "Well, Sirius said that some improvements would be made. ”

Mu Feng thought for a while: "It will take quite a long time for the overall performance to improve, but there is a simple way to temporarily maximize the hull capacity. ”

Nanchang was a little puzzled: "Simple way? ”

Mu Feng said with a serious face: "Add a cannon barrel." ”

Nanchang laughed directly: "Poof...... It's really easy enough......"

Mu Feng smiled and said: "So lie down quickly, I'll change it for you, use it like this for the time being, and then change it to a more advanced one after the overall upgrade is completed." ”

"Hmm." Nanchang nodded and agreed, took off his shoes and went to the bed to lie down.

Mu Feng replaced the electromagnetic cannon in the bow of the Nanchang ship with a double-mounted version that had just been produced, and the corresponding internal energy supply system of the hull was also changed to two sets.