[The Wuyalou Ship Battleship is also known as the Sui Wuya Battleship in our today.

This kind of building ship warship originated in the Sui Dynasty, because of the five floors of the building then named Wuya, the length of the ship is 55 meters, the width is 15 meters, the draft is two meters and two deep, and the height of the ship is about 30 meters.

This is a very typical ancient Chinese warship, with the top attic for observation and command, and the lower four floors for troops.

During the Sui period, there were not many threats at sea, and they were basically small boats, so the initial firepower of the Wuyalou ships was basically to deal with light enemies.

On each floor, there are female wall arrows, allowing soldiers to shoot the enemy with their bows, and the main means of dealing with enemy ships is to shoot the poles.

The principle is also very simple, the clap rod is like a large mast, with a boulder on it, and when the rope is put down during the battle, the boulder will naturally fall and directly smash the enemy ship.

The soldiers on deck then turn the winch and use the pulley system to pull the lever back up, and then they can aim and shoot again.

The first version of the Wuyalou ship was equipped with six sets of levers in the front and back, left and right, and when the fight started, it directly rushed into the enemy fleet, and the six-pronged circular slap was said to be incomparable.

Imagine being like a big bug, it's quite joyful.

And after the Tang Dynasty inherited this kind of warship, it was not good to find such a large ship empty, so it simply placed the winch crossbow, trebuchet and other big killing weapons on the building ship, and this kind of warship was qualified to be called a ship.

According to the documents that can be found today, at the end of the Warring States period, the first repeater that could fire multiple crossbows at a time appeared, and at that time it was necessary for multiple people to use winches to wind them.

For the first time in the Han Dynasty, a bed crossbow appeared, and this kind of thing didn't have to be said, so it highlighted a powerful brick flying.

The craftsmen of the Tang Dynasty combined the repeater and the bed crossbow into one, and improved the single bow arm of the Han Dynasty bed crossbow into a multi-bow arm, so the Tang Dynasty winch crossbow was born.

This is a kind of giant bow and crossbow that can be moved at any time on the car, with a winch to open the bow, the crossbow arm is set up with a main six pairs of seven arrows, the main arrow is placed with giant arrows, the secondary arrow crossbow arrow is slightly smaller, after pulling the trigger, the seven arrows are fired together, the range is 700 steps, Tang is about one meter five five, and the range of the winch crossbow is about one thousand meters.

Compared with the winch crossbow, which is a large killing weapon, the trebuchet of the Tang Dynasty is very simple, and it is still a very traditional pulling type, that is, a simple lever system.

The wooden pole is placed on one end of the stone and the other side is pulled by people, although it is inefficient but cheap.

These two things, coupled with the rockets of the Tang Army, can be called a dimensionality reduction blow to the Japanese army, so it is indeed not surprising that they can win a big victory.

However, it is a pity that the Song Dynasty inherited these things from the Tang Dynasty, but they only made improvements and lacked innovation in the fundamental sense.

The Ba Niu crossbow is an improvement on the bed crossbow and the winch crossbow, with an increase in firing range of 500 meters.

The highest masterpiece of the stone thrower, known as the seven-tip cannon, requires more than 200 people to pull and can throw a 64-kilogram stone projectile to a distance of 100 meters.

The energy conversion and energy loss can only be said to make people cry, and its practicality should also be questioned.

As a result, the craftsmen found by the Mongols from West Asia changed their hands casually, and the return cannon directly smashed Xiangyang City and smashed the Southern Song Dynasty to the ground.

But in fact, at that time, the counterweight trebuchet was not new in the West, and it was a compromise product of Arab craftsmen.

Not to mention that at that time there were already classic torsion trebuchets in the West.

If you really want to see the change, you have to look at the Ming Dynasty, directly change the cannon to the cannon and play with gunpowder. 】

In Bianliang's Imperial Garden, Zhao Kuangyin's face was a little heavy.

Squatting next to him, using a small jade axe as a pen, he drew on the ground this time.

After staring twice, Zhao Kuangyin stood up and directly erased the simple lines of the cannon with his foot.

Next to him, Zhao Guangyi wiped off the superfluous expression on his face, full of sincerity:

"Brother, brother, please be the supervisor and supervisor, and share the worries of the elder brother!"

Zhao Kuangyin looked at his younger brother, and finally put his left hand on his shoulder:

"If you have a heart, now you just know a picture, and the civil craftsmen don't understand, what is the purpose of going?"

Zhao Guangyi lowered his head slightly, looked at the jade axe in his brother's right hand, and stopped talking.

Sitting back on the stone bench, Zhao Kuangyin slowly got up an idea in his heart.

One skill to rejuvenate the country, one skill to break the city, perhaps those merchants who trade with foreign races should be strictly ordered not to bring craftsmen to make magic weapons.

Well...... As well as look twice more, this so-called twist ...... What trebuchet to note.

Zhao Kuangyin wrote it down in his heart, and he should find a few good writers from the inner servants, otherwise it is really not safe to memorize it by himself.

As for this brother...... Zhao Kuangyin didn't count on it.

What is your brother, can you not know?

……

Kong Ming in the Chengdu Mansion was full of interest.

Now, with a charcoal pen, he can also vividly depict the illustrations of those later examples, and Pang Tong is envious of him.

Kong Ming is almost an all-rounder, he knows it.

When I was in Nanyang, Linti, Fuqin, Danqing, etc. have all seen it with my own eyes, and even when the weather is hot, I can swim down the river a few times.

At that time, Pang Tong was amazed, and Kong Ming's energy seemed to be endless.

And now, watching Kong Ming take out a thin stone strip and compare it to the paper, he divided the drawing of a trebuchet on the paper in three times and divided it by two.

Then there was leisure to change the brush again, and after dipping the ink, the words "torsion trebuchet" on the book were neatly arranged, and Pang Tong suddenly felt a little stuffy.

"What does Shi Yuan think of this thing?"

Awakened by Kong Ming's question, Pang Tong silently adjusted his mentality, leaned over and looked at it carefully, and soon saw the doorway:

"The power of this trebuchet depends on the material of this kink rope."

Pang Tong pondered for a moment and felt that even if it was to replace this part with rough hemp rope, it would not be easy.

"And compared to that...... Drag-type trebuchet. ”

Pang Tong stretched out his finger and nodded, stating his opinion: "Each has its own advantages and disadvantages. ”

"After all, this kind of towed cannon is easy to make and operate, and only a few iron parts are needed, and it only takes three or five soldiers to build it in a moment."

"And this Western cannon is more delicate, I'm afraid it is inconvenient to carry, and if the twisted rope wants to be easy to use, I am afraid it must be a cow tendon or a rubber rope."

After the rise of engineering in Gong'an County, some large equipment needs a kind of soft but tough, similar to cow tendon in the critical places.

Kong Ming and his wife spent a lot of effort, and finally only researched and replaced peach gum, but peach gum is also scarce and expensive.

Sighing and shaking his head, Kong Ming also smiled:

"I don't know how the West solved this thing."

As for the slap stick, everyone in Chengdu Mansion also understood it at a glance.

After all, in the hydraulic workshops all over the place, there are not many things like this pulley, and there are more gears.

Gong'an County even had a gear workshop early on, making Jijin (bronze) gears and iron gears for engineering utensils.

It is also for this reason that Kong Ming also thought of several ways to improve this clapstick, and planned to draw it out and send it back to Jingzhou when he turned around.

Although there are many restrictions on this racket rod, it is like the drag-type trebuchet, which highlights a simple and durable structure that is easy to make, cheap, and simple.

The ship's crossbow was like a torsional trebuchet, easy to use but requiring real-time maintenance and a lot of money.

Thinking like this, Kong Ming remembered the word productivity.

Whether the craftsman is good or not depends on the actual use, just like the iron horse that is strong, but now the productivity is insufficient and it cannot be installed on a large scale.

It's the same with this torsion trebuchet, where a small torsion rope can stump them.

This scientific approach to materials research is just beginning today.

When will we find the perfect alternative to beef tendon and peach gum?

Kong Ming added a new trouble.

……

In the Ganlu Palace, Yan Lide and Yan Liben became excited again.

This thing is of great use in the Tang Dynasty, and Yan Lide is the best at it.

Yan Lide never felt that his tenure as a supervisor would be as easy as in the past two years.

Stronger armor, better horse harness, excellent warships, easy to use ordnance, the craftsmanship of later generations, the improvement of painting methods and architecture, etc., all made Yan Lide like a treasure.

The most important thing is that compared to the fiercely competitive generals, the capable Wenchen.

The craftsman made one and now only his two brothers of the Yan family.

Previously, Yan Lide and Yan Liben planned to let their son Mengmenyin enter the official career, but now the two brothers discussed:

What career to enter, it is better to study painting skills and learn craftsmanship.

can become a master, and there is a lot to be done in Datang today.

Li Shimin took a deep breath and stood in front of the map to look at Liaodong and the Korean Peninsula.

As an excellent commander, he now understands that with this new artillery blueprint, it may be difficult for the small town in Liaodong to hinder the footsteps of the Tang army.

Goguryeo can be broken at any time, and the peninsula can be entered at any time.

But after the fight, how to make him a Tang genre for the rest of his life is the problem.

Now that he can be elected, Li Shimin, as the emperor, hopes to be able to avoid future troubles forever.

After all, what you see on the light curtain today is the best lesson.

The general's indifferent arson made Tang centrifuge from Germany in the land of Baekje, and although Liu Renliang violently conquered and quelled the trouble, Li Shimin did not see any signs of subsidence of the contradictions.

Sooner or later, the suppressed contradictions will erupt one day, and this is the perception that Li Shimin has drawn from seeing the embarrassment of "himself" in handling the East Turkic situation.

Moreover, this Goguryeo and the Central Plains began from the time of Guangshen to the time of the emperor to send Li Shichang to destroy the country.

In the past few decades, several large armies have attacked, and there are more than a hundred battles in size? In this way, the hatred and contradiction between the two sides are even more groundbreaking, how to solve it?

Therefore, Li Shimin had a more pessimistic attitude towards the Tang Dynasty's economy in Liaodong.

As well as this Silla, the Tang Dynasty on the contrary swept away the obstacles of the peninsula.

Li Shimin had a lot of thoughts, but at this time, he felt that this Liaodong was not as good as the grassland tribes in terms of wealth and good warfare.

However, the complexity of the contradictions is more than ten times higher than that of the grassland tribes.

It is easy to open up the territory, and it is difficult to open the territory of China for all eternity.

But...... The corner of Li Shimin's mouth raised a smile:

That's why it's so hard that I have to do it!

[In the Battle of Baijiangkou, Liu Renliang was able to pinch and round the Japanese army casually, in addition to the hardware gap, the leadership of the knowledge level is also very important.

It's like the Japanese army launched a board charge against the Tang army, not as soon as the head is hot.

According to the Wa Kingdom's own records, during the Battle of Baijiangkou, they observed the celestial phenomena and believed that the wind was in their favor:

The Japanese ships are going with the wind, and the Tang army can't move against the wind, although there are strong ships that can't move, what is there to fear?

But what made the Japanese people incomprehensible was that it was obviously a headwind, but after the fight, the Tang army could still sail against the Japanese army, and finally surrounded the Japanese warships.

This is not complicated, when the boat is headwind, as long as the angle of the boat and sail is adjusted to keep the angle between the left and right 35 degrees to 45 degrees, the boat can sail against the wind in a zigzag shape.

When the wind blows on the curved sail, the sail decomposes the force formed by the wind to obtain a forward force, because the higher the flow velocity and the lower the pressure when the ideal fluid flows at medium to high temperatures.

That is, the Bernoulli effect, which is clearly stated in high school physics textbooks, and it is also very common in life, so it is not difficult to understand.

Although our ancestors did not understand this, they still summed up the sailing experience, which is commonly known as the method of sailing against the wind.

The Japanese state neither understood nor understood, and the result was that the Tang army was back-contracted, and launched rockets wantonly at the upwind, making the Japanese army a clear arrangement.

Therefore, if you peel off the coat of the Battle of Baijiangkou, you will find that there is an obvious gap between the Japanese army and the Tang army in all aspects from the social system to the quality of the soldiers, from the level of craftsmanship to the level of knowledge.

Therefore, the Battle of Baijiangkou was essentially a victory for the civilization hierarchy.

However, when it comes to the naval battle of the Tang Army, it inevitably reminds people of the absence of China in the Age of Sail, so it is inevitably embarrassing.

There is a saying that China invented the compass, but the compass attracted robbers, but this statement cannot be said to be incorrect, at least it can be said that there is no truth at all.

In fact, the origin of civilization and science is a collection of countless low-probability events, the result of the present that belongs to the standard.

For example, in the West in the 300 years B.C., the "Geometric Original" was written, this mathematical work put forward the idea of axiomatization in an epoch-making way, starting from the definition, public assumption, and axioms, using logical rules to temper a rigorous axiomatic deductive system, analyzing, inducting and summarizing mathematical knowledge, and finally sorting out the messy mathematical and geometric knowledge into a rigorous and systematic scientific system.

Since there is already such an advanced theoretical system and axiomatic ideas, has Western mathematics begun to develop greatly?

Of course not.

Even with this advanced book, the progress of mathematics and science in the West was very slow, and it was the Arab Empire that really advanced modern science by a big step.

After the fall of Sassanid Persia, the power of the Arab Empire expanded to Central Asia, which was able to enjoy the fruits of Eastern and Western civilizations at the same time, and it was only during the centuries of peace that Arab mathematics began to develop rapidly.

The papermaking of the East laid the foundation for Arabia, the Western Geometry became the guiding theory of the Arabs, and the astronomical knowledge obtained from India produced the brilliant mathematical achievements of the Arabs, which were exported back to the West after the decline of the Arab Empire.

This knowledge, together with the emergence of transparent lenses in the West in the 11th century, contributed to the germination of geometric and optical theories, which eventually led to the Renaissance in the West.

But until this time, the East and the West can still be said to be civilizations in different directions, and what really separates the East and the West is that the West finally has a scientific Confucius-like figure:

Apple Celestial, Sir Newton.

Leaving aside his other achievements, his most important achievement at sea was to propose a model for the sextant, and the British Navy eventually succeeded in creating the octant based on this theory.

In this way, if human beings want to determine their position on the ocean, they can no longer rely on the stars or coastal geography, and can safely carry out ocean voyages.

Only then did the era of maritime hegemony officially open, and the East really began to fall behind.

And the compass is just an insignificant part. 】

I'm sorry, but I have a lot of work to do today...... Friends who watch LOL should know.

(End of chapter)