400 mm guns, which is already the level of the battleship's main gun, during the First World War, the ultra-fearless warships, most of their artillery caliber is about 15 to 16 inches, that is, in the World War II period, in the War ofmusmon and Dahe such a class of warships, they caliber more than 400 mm, reached 460 mm, other major countries of the warship, less than 400 mm.

Of course, the Japanese technical level is very low, their 460 mm caliber artillery, may not be more than the U.S. military's main battleship, 356 mm strong where to go, the caliber of the gun, although it is a very important speed of sound, tube, and other speed of sound, is also quite important.

At present, the Navy has solved the two problems of materials and gunpowder, and at the same time uses three methods, which only appeared in the late 20th century to strengthen the artillery, and the strength of the artillery can be accommodated has reached the maximum, so the power is naturally high.

The gun, to put it bluntly, was a weapon that caused the gunpowder to explode in it, and then produced the expansion gas, the propelling shells, moving forward quickly, and producing damage.

In principle, as long as the gun can withstand how much attack, the gun itself will be more powerful.

The power generated by the explosion is unlimited, filled with more gunpowder, you can produce how much power, sometimes, the life of the barrel, probably hundreds of guns, according to a shell, in the barrel of the explosion time, dozens, or even hundreds of seconds, hundreds of guns life, is the continuous force of a few seconds, or even lower.

Whether it is the tightness of the tube, or the iron hoop, or the coating, these can strengthen the strength of the gun, the premise of the three together, the strength of the simple barrel, the naval barrel, has reached the second half of the 20th century, or even the end of the level, under this level, more than 2 combat levels, it is very normal.

Even if the Navy, in the artillery research on some of the research, not in-depth, but the artillery, especially the large artillery, the most critical basis is the material, as long as the material is solved, the gun is equal to half of the problem, the understanding of the gun is not profound, may not be able to shrink, but magnifying, there is no problem.

In this way, in a certain coincidence and Zhao Xin's continuous investment, the artillery is also bigger and bigger, the biggest one, has been produced, the caliber above 400 mm, this gun, calculated to be 40 cm, after the technical concept of future generations, the use of more advanced gunpowder, and more powerful warheads, these artillery, infinite power, even if the bastion of such a reinforced concrete structure, in front of such a gun, is also vulnerable.

Zhao Xin is a military enthusiast, he even personally studied the long bow, but also to hunt, as the most peak of the heavy artillery of the era of the representative work, the era of the dreadnought and the ultra-fearless ship, he is very eager to reproduce these ships, the artillery has a breakthrough, compared to the early days of the Dreadnought ship, has increased a lot, but the other foundation of the dreadnought ship, the large ship, but a constraint, the Navy can not be manufactured.

The Navy, because Zhao Xin's leap forward, directly across the existence of wooden iron ribs, directly walk the ship, unfortunately, there are many problems, although the Navy has a pool experiment, there are more scientific methods, but the time of rise, it is too little, others use a hundred years, hundreds of years, can accumulate the harvest, on the side of the fixed navy, it may only take a few months, this is because the results of Zhao Xinjing, but does not mean that there is no bottleneck, now, this bottleneck is shown.

In the windsurfing era, the ship has been the largest human production of means of transport, to the Spanish galleons and seagoing ships such as the seagoing ship, is much larger, from dozens of tons, suddenly jumped to a thousand tons, but from the ordinary sail warships, and then into the ship to this degree, it is not the same, thousands of tons are normal, greater is also.

So constantly rising weight, especially suitable for wood, lighter than water, but steel and other heavier material, which itself has a certain difficulty.

Zhao Xin came from the afterlife, and after the college entrance examination, and was baptized by counseling for so many years, of course, he knows the basic principles of the ship.

Density this thing, is to look at the whole, rather than a single material, steel ship, the reason why it can float on the water, because his overall density is still lighter than water, to put it bluntly, is to divide the steel into a different compartment, so that the density of the air is much lighter than the water, the air and steel, once neutralized, the formation of something heavier than water, can also make the ship this.

Space, cabin, and some unique settings, such as fluid, as well as design aspects, set the navy, under the promotion of Zhao Xin, made a Spanish galleon, as well as a flying shear, for the fluid system is not strange, the spacecraft is a fluid buoyant, unique design, hollow bow, will let the ship in the wind forward, slightly on the way, so that the whole ship and the water contact is small, at the same time, the overall shape of the ship is the same, is the same.

Zhao Xin did not have much research on the ship, nor did he have knowledge of mechanics and ship studies, but he had seen many, not to mention, the position of the propeller, he would design, this has been formed by the generations of ships in the future, at the same time, the shape of the entire ship, chimney, and some overall layout, he also knows.

Of course, he knows the law of development, after the Chinese-style sailing, to the Spanish sailing, to the sailing, and then, without having to consider other forms of transportation, directly into the ship, with steel to make this field, the field is common sense in the future.

But even so, the development speed of the ship is still very slow, before all the rapid progress, here the formation of a huge barrier, even if hard work, can not complete the ship's molding and mass production, even civilian small fire wheel, did not get out, not to mention the warship above, is really very difficult.

For this, Zhao Xin is also very helpless, on the gun, there is a huge advance, 400 mm artillery, not to mention compared with the First World War, the First World War is almost invincible, even if it is placed in World War II, it is also the best, the power is higher than 356 mm, perhaps can press its head, there is only a monster like that.

Weapons above, especially large-caliber heavy artillery, is already the level of World War II, the quality of steel, and even has reached the new century, in Zhao Xin's view, everything is not a problem, in the large steam engine just after the completion of the steam engine, the development of the ship.

I thought, how, should also have a little development, not to say, tons of battleships, thousands of tons of warships, should be hand-to-hand.

Zhao Xin ignored the technical content of the ship, unscrupulously said that even the Northern Song Dynasty, the manufacture of any ship sailing on the Inland River, it also needs a lot of technology, those passed down from generation to generation, from the most junior helper, to the master of a ship, these take many years to walk.

To the Spanish sailing and sea shearing, their technical content is higher, unwarranted, every plank, the setting of each sail, need to be calculated countless times, which is also reversed, to the ship this level, the upgrade is higher, almost the whole of every structure, need to calculate, to give the buoyancy can not pass, then just sent to the water, will sink.

In the fields of ordinary river ships, in the fields of Spanish sailing ships and sears, the combination of these two aspects, the combination of the two aspects taught by the later academicians and teachers, promoted the development of the navy in the oceanic seagoing ship, but in the ship, it could not, the previous leap-forward development, skipped the structure of some ships, and finally produced the evil results, even if it was a pool experiment, and everything was correct, but it was impossible to make a qualified ship.

Either the ship made out, the water is still good, a wave hit, it sinks, or it is very reliable, it is easy to have such a problem.

At first, the researchers just thought that this was an inevitable problem in the experiment, as long as it was solved in the right direction, but the more it was solved, the more there was a problem, and even later, it was produced, and even the water could not be put down, because as long as it entered the water, it sank immediately, and the dock could not be out.

Zhao Xin has always been very concerned about the ship, in the discovery of the American waterway, and in the Americas has set foot on a foothold of the premise, the future of the Americas is definitely to be developed, North and South America, these two huge continents, full of animal and plant treasures, is definitely worthy of attention.

North America is also just a little bigger, a little more resources, but South America, it is really a treasure, the world's largest river Amazon, Brazil's rainforest, contains a treasure trove of plants, the eyes to the south, in Argentina, and a Pampas plateau.

In the 16th century, the Spaniards first brought the cattle to the pampas grassland, and then there were no natural enemies of them, growing wildly on such a fat grassland, and by the 18th century, the Spaniards coarsely estimated that there were 88 million bison on this plateau.

In the past 200 years, it has increased tens of millions of times, and I am afraid that the fertility is stronger than them, and that is only the Australian rabbit.

No wonder later, on the Internet, the next paragraph, what the Argentinian said, when the Argentines, when they encountered an economic crisis, they were indignant, and came home to a barbecue meal, in Argentina, once beef, was the cheapest kind.

The ship is quite good, and it is the pinnacle of the entire sail fleet, but it still has many problems, so the ship can be solved perfectly.

I thought that the researchers would give him a perfect answer, not to mention thousands of tons, tens of thousands of tons of the kind of ship, a thousand tons of small fire wheels should always be able to do it, but the reality is like a stick, not to mention one or two thousand tons, 50 tons, 100 tons are not made.

In the end, it is difficult to be a proportion, but according to the formula he gave, the formula above the density and buoyancy, perhaps, the one that sinks directly down is not the buoyancy, but the other ones are not, there is only one hollow steel plate, the rest is all empty, the proportion in this regard, compared to the wooden, much lighter.

However, floating on the water surface, the performance is more unstable, once the wind and waves come, it is easy to overturn.

Zhao Xin carefully analyzed the reasons, suddenly thought of the development of future generations, it seems that from the wooden sailing ship to the ship, but also through the process of iron ribs, although said, the Navy has used strength, across the process, there will be problems here.

When Zhao Xin controlled the Navy, most of the situation was smooth when promoting the development of the Navy in terms of technology and machinery, but in some special areas, it was still prone to problems.

For example, the part that should have been crossed, it seems that this part, it seems that there is no direct connection behind, but in fact, it is a very important step in this research process, and the one that misses this one will have an impact on the whole study.

Dealing with these things, especially the real example, in Zhao Xin felt that perhaps this wooden ship iron rib, for the whole ship, there is not much impact, but still refers to the point of the technical staff, this aspect of the attempt.

Sure enough, Zhao Xin's idea is correct, the wooden boat iron ribs, he is a step that the ship must go through, only to the wooden boat with iron ribs, you can control the size of the buoyancy, its own sailing, has a certain center of gravity, can easily sail on the sea, and has been highly sea-like, can also be successfully stabilized, not capsized.

Coupled with the iron rib, the weight of this iron rib, the size of the iron rib, for the overall center of gravity is very critical, this is different from the previous direct ship, this can be tried before and after, to figure out the density of the problem, the future, in the production of the ship has a great help.

To make it clear, of course, if Zhao Xin has an excellent understanding of density, for fluid mechanics, and even research in very in-depth cases, it does not have to go through this process, directly focus on the center of gravity, but also to get out the shape of the entire ship, but Zhao Xin did not, then according to the historical development, is the right choice.

After the iron ribs were made, a study of his ribs was made, and the steamship had a bottom, and some proportions were generally done according to the iron ribs, even if they did not understand, directly brought into the doctrine, used it, and soon, they harvested the first more successful ship, but this ship was very small, only 100 tons of displacement, at most in the 19th century, the small fire wheel of the river, but the small fire wheel of the river, but the small production.