Open an aircraft carrier to fight against Japan

Yuhiro Ito first said: "Today's meeting is attended by experts in our Imperial Japanese Navy. Our meeting today has only one topic, which is what kind of fleet we want to build to defend the dignity of our Imperial Japanese Empire! "

A voice first said: "To build a navy, we must first determine our opponent. Our main opponent is that mysterious ship!"

Another voice echoed: "Yes, I agree with this view. As we all know, the most powerful navy in the world is the Royal Navy of the British Empire! But judging by the strength displayed by this mysterious ship, the fleet of the British Empire It’s like a child’s toy compared to it.”

Ito Yuheng said: "First of all, the speed of our fleet's warships is too slow. At the beginning of the battle, our fleet has already approached the mysterious ship. It seems to have suddenly appeared in front of us. Our naval guns have already been able to Attacked it, but let it escape."

Everyone was silent. Everyone knew that the fastest speed of the warship at that time was only [-] knots, and it was just a dream to reach the speed of the mysterious ship of [-] knots.

Ito Youheng said: "The power of our warship's main gun is obviously insufficient. Our Fuso ship has already hit it, but it is a pity that it did not cause much damage."

A voice said: "Regarding the power of the artillery, we should increase the range of the artillery, so that we can take the lead in the confrontation with the mysterious ship. The only way is to increase the caliber of the artillery. The larger the caliber of the artillery, we will More propellants can be added, and the warhead can be made larger, so the power of the artillery will naturally increase."

Ito Yuheng said: "It's not easy to do this. Our current Sankei ship with the largest displacement does not exceed 3 tons. A ship of this tonnage is equipped with a [-] mm caliber main gun. When the muzzle rotates, it will hit the ship. Stability is affected, so if you want to increase the caliber of the artillery, you must increase the displacement of the ship, can we build a warship with a displacement of [-] tons?"

A voice said: "The solution to this problem is the same as the speed. We want to build faster warships and warships with larger displacement. The fundamental method is to improve the power system."

Ito Yuheng said: "How do you say we should improve the power system?"

The voice said: "There are two ways to improve the power system. It is easier to improve the design of the ship, that is, to optimize the facilities on the ship and remove some unnecessary equipment. For example, the ramming angle, the support of ramming tactics Readers have always been obsessed with the Battle of Lissa in 1866. In this battle, the Austrian flagship successfully sank an Italian warship with a ram. However, when facing the mysterious ship, we found that it was impossible to get close enough to ram. distance, simply remove the angle of impact."

Ito Yuheng said: "Your opinion is very good, who else has another opinion?"

Another voice said: "Our Sanjing ship is still using fire-tube boilers. I think we should fully replace them with water-tube boilers. The tubes of water-tube boilers contain water, which is converted into steam by the high temperature outside, and the fire-tube boilers The tube is a high-temperature gas, surrounded by water, and turns the surrounding water into steam to do work. Due to the limitation of the material, the steam supply pressure of the fire tube boiler is difficult to exceed 2 MPa, and the higher the gas supply pressure, the higher the speed of the ship. , so we should improve the fire tube boiler into a water tube boiler.”

A voice said: "But there is a lot of salt in sea water, and these salts will form salt scales and accumulate in the water pipes. It is not an easy task to clean them."

The voice said: "I have already considered this, we can add a seawater filtration device around the boiler, use chemical means to remove the inorganic salt ions, achieve the purpose of seawater desalination, and reduce the accumulation of salt scale, I have already calculated Yes, the increased load of installing this seawater filtration device is negligible compared to the power increase brought by the replacement of the water tube boiler."

Another voice said: "In addition, we can also modify the steam engine part. As we all know, if you want to increase the efficiency of the steam engine, you must find a way to increase the initial temperature of the steam. I think we should improve the pressure air supply device. On our current warships, there is indeed a way to improve combustion efficiency by using pressure air supply, but this device is still relatively crude, and we should redesign this device."

A voice said: "The steam engine we use on the ship now is to let the high-pressure steam push the piston, and the piston converts linear motion into rotary motion through the crank-link mechanism. During this process, the loss of mechanical energy is relatively large. If we can Having that steam push directly on the shaft of the propeller would greatly improve efficiency."

Ito Yuheng said: "I think this idea is good, is it difficult to realize it?"

The voice said: "Now it seems that it is quite difficult to realize. There is no problem in the basic theory. The problem lies in the engineering implementation. For example, if you want the steam to directly push the shaft of the propeller, there must be a belt on the shaft. There are blades, such a large-sized blade, the rotation speed is very high, and the centrifugal force it receives will also be very large, which will inevitably bring about strength problems; there is also the problem of vibration. At present, we still have a good understanding of the vibration mechanics of the rotor. If you don’t go deep, there will be many detailed problems in the engineering field. Let me give a very simple example. It is impossible to have only one axis in this system, because the whole system is very large, so how to connect the two axes? , how to choose the connection stiffness, these need our further research.”

Another voice said: "My lord commander, in fact, these problems are all about one problem, that is, whether we have money. These researches are all supported by large sums of money. We are not sure whether the government can give us enough funds? "

Ito Yuheng smiled and said: "This problem, the professors here don't have to worry, even if we don't have money to eat, we still have money to build a navy!"

Only Yuto Ito laughed a few times in the audience. Everyone knew that in order to strengthen the military, the Japanese government invested half of its annual fiscal revenue in military construction. No one dared to question the significance of this.

Ito Yuheng said again: "Now let's discuss the issue of weapons and equipment. I think that kind of flying machine will definitely become the thing that dominates the battlefield in the future! Professors, can we create that kind of thing?"

At this time, Lin Yuan heard a voice, which was the one who spoke in the last meeting. He said: "We went back and analyzed the idea of ​​​​making airplanes, and found that there was a problem with our original idea. We wanted to use the backward injection of air. Doing work, this is really too difficult, so we also choose to use propellers for propulsion."

"If an airplane wants to overcome gravity and fly into the sky, it must be subjected to vertical lift. When we tracked the development of aerodynamics in Western countries, we found that Russians such as Kovsky deduced the lift formula for the flow around a cylinder. , according to this formula, we can design the shape of the wing, although the calculation of this design is very rough, but we can verify the shape of the wing through subsequent experiments."

"Then we will face the problem of the rotation of the power unit. First of all, the most mature one is the steam engine. After our preliminary research, we found that this kind of machine is not suitable for powering the aircraft. It is too heavy, and you need to bring water by yourself. Coal, so we want to use internal combustion engines as the power of the aircraft. Compared with internal combustion engines, the weight is small, and gasoline is used as fuel. We decided to use internal combustion engines. In this way, the day when our Empire of Japan has flying aircraft is just around the corner.”

Ito Yuheng said: "In this way, we also have a flying machine, and it is not far from our Great Japanese Empire dominating the world! Professors, sort out your plans and estimate how much money it will cost. I will see you in a few days." Go and ask the government for money." With that said, the meeting broke up.

Lin Yuan put down his earphones, and saw Shen Wanqing standing in front of her with a mask, smiling, and she showed off, "Look, my mask is ready."

Lin Yuan asked: "When do you plan to send Shang Tai away?"

Shen Wanqing smiled and said, "Tomorrow."

Lin Yuan smiled and thought: "This time, there is a way to piss off that old guy Hirofumi Ito!"