In fact, the Han Empire already had mechanical drives, but to put it bluntly, they still relied on manpower to drive, not mechanical drives in the real sense.
The navy now has fifteen gunboats, among which the "Quanzhou" is equipped with a gear-mode drive device, but the gears are powered by human and animal power, and only a small part of the gear structure is made of metal.
The so-called gear drive mode can be regarded as an alternative "donkey grinding" ultra-complex version, which is composed of many large and small gears and bearing shafts to form a force increase mode of large and small gears.
The test of the drive device of the "Quanzhou" was not successful, firstly, the material composed of parts could not withstand the wear, and then there was a problem with the arrangement of the gears, resulting in too short service life, and the failure rate was too high, and so on.
The layout is a component relationship, and there are errors in the layout position.
Historically, the steam engine was studied and installed on ships, and it is not unreasonable for the layout of the paddling device to take the left and right sides of the ship's side, the main reason is that the horsepower is insufficient, and the layout can be adopted as much as there is to be as much horsepower, which can play a greater role under the limited horsepower.
The first generation of marine thrust device is the kind of propeller like a circular waterwheel, not a propeller like a propeller, and it may not be that the imagination is insufficient, but the power is insufficient.
"Your Majesty, the thrust device is arranged in the stern, and the position of the rudder has been changed" The Jockey Club speaks a lot of jargon, including some of the parts of the boat and related parts.
Some Liu Yan can understand, and more can't.
The rudder is a part that controls the direction of the ship, it is not arranged in any position, and it is not the same size of the rudder of each ship, or it is necessary to consider the tonnage of the ship itself, and then how to arrange it, and also design the size of the rudder according to the tonnage of the ship.
"The rudder of the Quanzhou underwent 17 changes before it was finally determined where and how big the layout would be to give the vessel maximum flexibility in steering."
The Jockey Club says that the Quanzhou is currently the main base of the Jiangnan Shipyard: "The rudder has been redesigned, and the hull has been redesigned. ” Liu Yan remembered that there seemed to be a report mentioning that the "Quanzhou" had only been used for less than two years, and there was a problem with the keel that could have been used for ten years.
And that was under the premise of constant maintenance of the keel, there was still a big trouble that had to stop sailing.
Facts have proved that as long as it involves science and technology, there is really no such thing as an overnight thing, all of which are continuous experiments, continuous improvement in the discovery of problems, and the degree of perfection may reach 99%, but it is found that the problem cannot be reversed, and finally the overall design is overturned.
If you don't get involved in a certain field to a certain extent, you won't find that the field is far more complex than you know, and it can even be said that the more you study this field, you will find that the more confusion you have, not that there are fewer and fewer places of confusion, but on the contrary, more confusion arises as the research deepens.
When a person who does not know how to look at a ship is to look at an object that shows a long shape.
Knowledgeable people look at the ship, just look at the hull and wonder if the design is right, whether the design of the horizontal plane and below has been optimal.
Boats are sailing in the water, and it is necessary to consider what kind of lines should be in order to minimize the resistance of the water itself.
After repeated experimentation, it was discovered that the original triangular sharp lines, or perfect arches, would be the best design solution.
Further research will show that it should be a razor shape under the water level, which will not only minimize drag, but also provide maximum stability for the boat.
Liu Yan had already boarded the iron ship, and when he saw that the deck was all metal, the answer he got was that it was only wrapped in a layer of iron.
The iron ship is divided into three tiers, with only one deck and two cabins.
The flagship room is placed in the middle and back of the ship, right in the middle of the aft mast and the middle mast.
"The mast is a timber structure" Sang Yu looked at the mast from a distance and the mast was also pitch black, but when he looked closer, he knocked on it again, and found that it was not iron: "That's right."
The sails are made of fire, and since the sails can't be burned, it really doesn't matter whether the mast is iron or not. ” That's right, Sang Yu is talking about fire cloth.
Legend has it that Emperor Wu of the Han Dynasty Liu Che obtained a piece of fire cloth from the Western Regions, and found that no matter how it was burned, it could not be burned, and it was regarded as a priceless treasure.
The so-called fire cloth is a kind of asbestos cloth, for a long time, it was regarded as a priceless treasure, if anyone can have it, it needs to be hidden and must not be discovered, otherwise there are people who want to destroy the door and rob people.
There are asbestos mines on the land of Zhuxia, and there are more in the Hexi area, and only two have been explored in the south.
The first to discover the characteristics of asbestos ore was not the people of Zhuxia, but the people from Ah San's side, and then spread to the Western Regions.
If you look through the history books, you will find that the people who take Huohuan cloth as treasures to sell in the land of Zhuxia are either from the Western Regions or the so-called Tianzhu people.
The Han Empire swept through the Western Regions, and there was a family that wanted to exchange the secret of asbestos for the price of living, but the secret was of course known by the Han people, and the family did not have a chance to live.
The navy has long wanted to obtain a sail that is not afraid of fire, and the four Han people who learned the secret of the fire raccoon cloth accepted the reward of the navy, and they got what they deserved, and the navy mastered the secret of the fire raccoon, which means that the center also mastered the secret.
When something is no longer a secret, then there is nothing strange about it, especially when the power of the state is used to produce, the thing will be less because of the lack of minerals found, and definitely not due to the lack of productivity.
Originally, it was a treasure, but because the navy mastered the production technology, the treasure became an ordinary thing.
"It's just an iron shell" Liu Yan put on it and walked around, there is a metal structure inside the hull, but in fact, the main material is still wood: "Since it is a wood structure, what is the consideration of using a metal waterproof hatch?"
The horse club showed an embarrassed expression and replied, "There are relevant concepts, accumulate experience." ” That's right, this is an experimental ship, the premise of ensuring that it will not sink when it is launched is to maximize its use value, regardless of whether it is a reliable thing, it can be installed and built.
Liu Yan got out of the bilge and didn't go to check the sailors' lounge, but came to the stern of the ship.
This place is emptied, and if you look at some of the architecture, you can find that it seems to be deliberately vacant for something, and then look at the style of the architecture, you will find that it is not haphazardly arranged, as if it is waiting for something to be installed.
"I think ironclads are not wind-driven."
The Jockey Club didn't know why, and a fanatical expression appeared on its face: "The Quanzhou can run sixteen knots at the fastest with a mechanical drive.
Although it can only last less than five minutes, Chen believes that the ship should use mechanical energy, not just natural wind. ” What the Jockey Club didn't say was that the "Quanzhou" ran 16 knots that time, but at the cost of the collapse of the gear unit, and there were 24 people who supervised and maintained it at that time, and 13 of them closed their eyes forever.
"The Quanzhou is nearly 1,000 tons and can run 16 knots.
The minister made a conjecture "The horse club said excitedly: "If we can ensure the operation of that set of devices to drive ships under 100 tons, will we be able to run to 35 knots?"
Liu Yan couldn't hold back, and after laughing dumbly, he looked at the horse club that changed from excitement to constipation, and reminded: "Volume." ” If you want to install a device on a 100-ton ship, the machine must be downsized, and it is necessary to consider whether it can still play the same role once it is reduced.
Of course, the Jockey Club has taken into account the shrinkage, if it is someone else, he will definitely spray when he opens his mouth, and he can only hold back in the face of the emperor, and compliment against his will: "Your Majesty Shengming."
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People who are engaged in scientific research may be a bronze in other fields, but they will be a king in the field they are familiar with.
They are not afraid to repeat failures in a research project, because all failures are about accumulating experience for success.
Those who are engaged in scientific research are most afraid of bureaucrats, who obviously don't even know a single fart, but they like to talk openly and give guidance in the name of their official positions, so that scientific research personnel are doomed to fail if they do what they do, and if they don't do it, they will lose even the opportunity to continue to fail.
Liu Yan mentioned the "idea", at least he was right.
The Jockey Club was depressed and then became even more excited.
Many of the scientific and technological products of the Han Empire were based on the points of the Son of Heaven, and those who were not engaged in scientific research would take it for granted that the Son of Heaven understood everything, but those who engaged in scientific research understood that the Son of Heaven must have the quality and knowledge of scientific research.
"The navy got that set of animal power devices" Liu Yan touched the metal bracket and said with a smile: "I know that it is a transitional product at best, so I still let them do it." ” The horse stopped breathing, looked at Liu Yan's mouth, and his heart was beating violently.
"You should try everything, otherwise how will you know if there is any result" Liu Yan didn't pay attention to the Jockey Club, and walked a few steps to look at an occlusal device on the ground: "Animal power drive is naturally not good, it is doomed to fail, just let the gear application get enough accumulation, that is, the gear application has been successful." ” The horse will continue to hold its breath, and that rewarding sixth sense will become more and more intense.
"Today's business, you can go to Chang'an."
Liu Yan squatted down and looked at the occlusion device, guessing what it was used to fix, and said, "Shaofu is working on a big teapot plan, you may be able to join in." ” The horse knew that this was what he had gained, and when he resumed breathing, he inhaled and exhaled in large gulps, and he didn't know if it was holding or what, and his face was flushed.
The so-called "big teapot" project is of course the study of the steam engine, and the related work has been carried out since the tenth year of Yuan Shuo, and after four years, it has been figured out how steam is generated.
Liu Yan went to Chang'an before leaving and found that the relevant personnel had entered the stage of observing the steam entering the cylinder.
He also heard that there had been a few explosions before, but fortunately there were only injuries, and no one died because of the accident.
Once the study of the steam engine has entered the cylinder stage, the rest is to figure out what the internal structure of the cylinder should be.
Liu Yan is not familiar with the steam engine, but he knows that the cylinder needs to have two things, such as a slide valve and a piston, and no matter how much it is, he has no relevant knowledge.
The "Big Teapot" project shocked the researchers just because Liu Yan mentioned the sliding valve and piston, and they wondered what was missing, but it took time to think about it from scratch, and it also needed to go through repeated failures, and after countless failures, the parts and construction were constantly changed, and finally the results were produced.
Liu Yan didn't understand what kind of layout the slide valve and piston of the cylinder should be, otherwise he should have presided over the test himself.
Although he was anxious in his heart, he could only wait patiently, maybe this year's "big teapot" plan will produce results, and it may take another three or five years or even longer.
If the "Big Teapot" project succeeds, it will not be the navy that will benefit first, but will definitely be used on land first.
Just understand the power generated by steam, is not the same as mastering the use of power, and then the next is the mechanical technology matching, otherwise there is only a steam engine without a supporting connecting rod mechanism and flywheel device, and the power generated is only the effect of evaporation.
"Quanzhou" went to engage in gear machinery, isn't it just groping for the power output of the steam engine?
The kinetic energy of the steam engine drives the flywheel to run, and the next thing is the bearing shaft and gear, which rotates is a kind of use of power, as long as it can be rotated, the next step is to consider the problem of increasing horsepower.
Liu Yan looked around and found that the layout of this place was waiting for the installation of relevant machinery, but he wondered why the "Quanzhou" had proved to be insuitable for installation at the stern, so why did he choose the stern layout.
"Huiji has built a set of abrasives over there, and a batch of gears has been cast."
The Jockey Club was not sure if Liu Yan knew what was going on, so he naturally didn't dare to hide it when asked: "The minister knows that steel is used." ” Liu Yan nodded, and there was no other expression.
It's great to have a spirit of exploration, especially when it comes to technology, and isn't it just about trying everything to produce results?
Maybe because you want to experiment with something, you don't come up with something you want to get, but you have a new scientific research result, and the tech tree is originally like this.
In the country founded by Liu Yan, in the twelfth year of the Yuan Shuo, the annual pig iron production had reached the output of Russia in the middle of the nineteenth century.
It should be said that the total production of pig iron in various countries in the world today is about a fraction of that of the Han Empire.
The Han Empire now produces 260,000 tons of pig iron and 43,000 tons of steel per year.
It doesn't look like much, but what you need to know is that it's only 356 AD, not 19xx: