The third more, ask for collection, ask for recommendation!

"You don't have horses, but you can get some from oxen." Lu Shihu smiled, "Qingzhi, what did you just say about a cannon car?" Do you have a mockup? ”

"Naturally, the mockup is already available."

Chen Dexing raised his hand, made a solemn gesture, and invited Lu Shihu into the hall. There were no women in Chen Dexing's mansion in the barracks, and only a few elderly veterans were serving tea and water. They were all soldiers who followed Chen Dexing from the battlefield, and they were all nearly forty years old, and they were already old men in this era. Although their bodies are not bad, their learning ability is not as good as that of young people, and Chen Dexing did not expect them to learn the skills of the artillery army, so he arranged for them to be guards.

"Brother Shi, please see, this is the new sample made by the younger brother, a motorized torsion stone machine." Chen Dexing took a newly drawn drawing and unfolded it in front of Lu Shihu, which was not a structural drawing, but a plane rendering.

The stone machine shown here is more complex and compact, and consists of two parts put together, including a stone machine mounted on two wheels and a wooden bracket to support the machine. The bracket is a frame of three pieces of wood, directly connected to the rear of the stone machine, arranged at approximately a large bevel. When the bracket is buried in the ground, the bottom of the stone generator in front of it can be approximately parallel to the ground.

This design is actually based on the historical smoothbore gun carriage, and the bracket at the back of the catapult can also be hung on a two-wheeled carriage or ox cart to form a four-wheeled carriage (ox cart), so that the stone generator has a certain degree of mobility.

Lu Shihu's gaze slowly swept over this sample drawing, and finally landed on the four-wheeled artillery truck that had been formed. "It's ...... Hung two wagons together? What a whimsical idea! ”

Chen Dexing smiled: "It's just a small road, Brother Lu Shi, please look at this picture." As he spoke, he unfolded a set of drawings of a three-tiered battleship. This kind of warship is the most commonly used warship in the Mediterranean countries of the Western Regions, and it is a sharp weapon produced by more than 2,000 years of maritime competition. ”

According to Chen Dexing's knowledge, the Song army was relatively powerful at this time, and there were many warships such as flying tiger ships, iron-headed ships, iron harrier ships, locomotive ships, horse-building ships, and iron-walled ploughshare ships. But none of them can move forward at a faster speed in the reverse flow of the river. This gave the Mongol navy, which occupied the upper reaches, a considerable advantage.

Among the many river ships of the Song Army, the fastest is the vehicle and ship driven by "wing wheels", which is claimed to be able to travel thousands of miles a day. However, in Chen Dexing's memory, the speed of this kind of vehicle and ship is far from reaching the speed of traveling thousands of miles a day, and even traveling 300 miles a day is suspended. Converted to the Western unit of speed calculation, that is, four to five knots.

Perhaps a well-built vehicle and ship has really reached the speed of thousands of miles a day when it has just been launched. However, the durability and precision of the transmission made of wood can be imagined, and when the mechanism is worn out, the performance of the vehicle and ship will inevitably deteriorate significantly. Therefore, in Chen Dexing's memory, the vehicles and ships of the Southern Song Dynasty Navy were equipped with oars at the same time, called the "Iron Wall Ploughshare Boat", which was driven by oars in peacetime and used in wartime with a pulp car (the ancients called a car by a tube wing wheel drive device).

However, in Chen Dexing's view, the speed of this iron-walled ploughshare ship is still difficult to move forward in the reverse current of more than 10 kilometers per hour. The ancient warships that can move forward in the reverse current of the Sichuan River are only the multi-layered paddle warships of Westerners in Chen Dexing's mind. If Jia Rudao wants to go upriver to reinforce Sichuan, he will inevitably need this kind of warship that is known for its speed.

Chen Dexing, who was a senior seafarer in his previous life, was no stranger to ancient ship structures, and he liked to make tsuò ship models when he was a teenager, and later collected many highly realistic ancient ship models, including the famous multi-layer paddle warship - this ancient warship that once dominated the Mediterranean Sea fascinated him, he not only made the simulation model himself, but also studied the structure and performance of such warships. Know that the fastest speed of such a warship in combat can exceed 10 knots! Even cruising speeds of more than 7.5 knots can be achieved. With such a speed, it is enough for the multi-layered battered warship to swim upstream in the Yangtze River and fight against the Mongolian naval forces that have the advantage of going downstream.

And the advantage of multi-layer paddle ships is not only speed, because this kind of ship is the product of thousands of years of conquest in the Mediterranean, and naturally has the strongest armament in the era of cold weapons, including metal ramming, ballistas, stone tools, and crow drawbridges used for broadside warfare. It's completely a war plane on the water!

"Three-layer pulp seat......" Lu Shihu seemed to have no idea, "What does the pulp seat mean?" ”

"It means to install three layers of wood pulp on both sides of the ship, each boat has 170 to 174 pulp, which can be rowed at the same time, and the speed is much faster than that of the car and boat."

Lu Shihu was stunned, "Put the upper, middle and lower layers of wood pulp!" Is it really possible? ”

Although ancient Chinese shipbuilders have been trying to make their boats more powerful, they have never thought of using multi-layer paddle seats, but have adopted the design of winged wheels and watermills, following the idea that no matter how thick the arms are not to twist the thighs, using pedal-driven wings instead of wood pulp for arm rowing.

"How is it not feasible? There are three layers of pulp, and the pulp hand is also divided into three layers, upper, middle and lower, just like a building. ”

The reason is very simple, and it can be said that one point can be broken. Lu Shihu is also from Jiangmen, naturally both civil and military, not a nerd who only knows the Four Books and Five Classics, and after a little pondering, he slapped his hands fiercely, "The truth is so simple!" The pulp is divided into three layers, each layer is more than 50, divided into two sides, and each side is only 278 pulp, how can it not? The three-layer pulp seat has a total of more than 170 pulp, and its force will be greater than that of more than 20 vehicles and ships...... By the way, Keiyuki, what is the size of your three-layer paddle boat? How many armor soldiers can be carried? ”

"The total length of the hull is twenty-five paces, the width is three and a half steps, and the plasterer carries fifty armorers."

"Only fifty armorers? Isn't it too little? Lu Shihu's excitement suddenly went to most of it, and the three-story pulp warship that Chen Dexing said seemed to be a little smaller, and at this time, the Song army warships with a length of twenty or thirty zhang (equivalent to fifty to sixty steps) and thirty or forty cars (wing wheels) abounded. Although the speed is slower than that of a three-tiered paddle warship, it can accommodate as many as five or six hundred warriors, of which there are no less than three hundred armor soldiers who can be used for battle, almost six times as many as a three-tiered paddle warship!

Chen Dexing said with a smile: "The three-story slurry warship does not rely entirely on armor, but it is equipped with pig iron at the bow to ram the enemy ship, or the stone generator throws the fire to burn the enemy ship. The impact angle of the three-layer paddle battleship is located below the waterline, and the destructive force caused by hitting at a high speed of more than ten knots is not at all something that a wooden ship can withstand! ”

Speaking of which, Chen Dexing asked the old army to take the model of the three-story battered battleship and put it on several cases. This is the third model of the three-story paddle battleship built by Chen Dexing, with a slender hull, a pointed bottom, a high freeboard, a black-painted ramming angle installed in the bow, and a model of a hair stone on the first deck.

"It's ...... A sea vessel? At this time, the Song army relied on several major rivers such as the Yangtze River, the Huai River, and the Han River to carry out operations, and the generals were mostly proficient in water warfare. Lu Shihu, who was born in the Lu family, also knows some knowledge of water warfare, and can distinguish between river boats and sea boats.

"Brother Lu Shi is really discerning, this is indeed a sea ship, with a pointed bottom, high broadside, and ballast with heavy objects, when it can withstand the wind and waves, and gallop on the sea." Chen Dexing said with a smile, "In addition, the little nephew is also going to let people build a shrunken river boat, with a flat bottom, which can shuttle back and forth in shallow water." When the two small boats are built, they will be taken to the creek for sea trials, and then they will be enlarged in size and taken to the canal for sea trials. ”