Su Dingfang and the others all have black lines on their faces, these two people are old and foolish, where is there such a chatter?

Fang Jun felt very kind, this was his old subordinate, and now he was very relieved to see it coldly.

Liang Renfang interjected: "Chief Administrator, why don't we set sail first, and the two of you will talk in detail in the helm building later?" ”

Fang Jun waved his hand casually and said, "You just raise the sails, what do Ben Hou have to talk about with this old guy?" There is a generation gap! Saying that, he supported Zheng Kunchang and came to the helm tower together, and talked in a low voice.

Liang Renfang on the deck instructed the craftsmen to take out the bilge sails and toss for a while before they installed their respective sails.

Liang Renfang tried the wind direction, southeast wind.

Therefore, it is a tailwind to go north along the Wusong River, and when it comes out of the Wusong Pass, it turns along the river and goes to the sea along the southeast river, which is just a headwind.

Liang Renfang shouted: "Raise the sails and set sail!" ”

Huge sails were raised to the mast by craftsmen with ropes, and several sails were blown up by the wind as they were raised, and the huge hull of the ship slowly slid on the water. The small sail in the bow and the spinnaker in the stern were raised continuously, and the sails were blown by the force of the wind, and the speed of the ship became faster and faster.

The lookout is at the stern, an open platform that wraps around the entire stern and is the captain's quarters. Su Dingfang and the others followed Fang Jun to the lookout, at this time the sailboat was blown by the wind and gradually accelerated, the bulging sail produced a strong thrust, and the sailboat sailed quickly towards Wusongkou.

The bow of the ship broke through the river, rode the wind and waves, and the sound of the wind came from the ears, as fast as a galloping horse!

Su Dingfang excitedly said: "It's really fast! With this speed, the sea is full of our sailors, we want to fight, do not fight, but the enemy wants to catch up, want to run away, from now on, when you can cross the ocean, invincible! ”

Liu Renliang lay on the edge of the lookout, looked at the two decks below, and said, "Do you see that empty position?" I heard from the chief manager that in the future, a new type of firearm will be installed there that can kill the enemy and a hundred feet away, and at that time it will be really invincible, and the ocean is so big that we can do it! ”

Liu Ren said curiously: "What kind of firearm is this, which can kill the enemy a hundred feet away?" Will the Imperial Court allow us to put it on a battleship? You must know that this time in the south, His Majesty has a lot of concerns about the use of the 'Earthquake Thunder' in naval warfare mentioned by the Grand Governor, and there is no decree to grant permission or not. If there really is a firearm that kills the enemy a hundred feet away, it is much more powerful than the 'Heaven-shaking Thunder', will Your Majesty agree? ”

The imperial court's strict control of fire and qi has almost reached an unprecedented level.

Since the death of the eldest grandson Chong without a trace, His Majesty has strictly restrained the Shenji Battalion, and even transferred Li Daozong, the king of Rencheng, to Beijing to take charge of the Shenji Battalion, and the palace is forbidden to guard the palace and take strict precautions.

Although the preparation of gunpowder was in charge of another department, and no outsider knew the secret recipe except for Fang Jun, but Changsun Chong was in charge of the Shenji Battalion, the only firearms unit in the empire at that time, who dared to guarantee that Changsun Chong did not get the formula for gunpowder?

In case Changsun Chong was able to prepare gunpowder, coupled with his familiarity with the palace ban, the consequences would be unimaginable!

The Manchu Dynasty was civil and military, and only the "lonely minister" Li Daozong, the king of the city, could make His Majesty Li Er fully trust......

Before Liu Renliang could answer, Su Dingfang had already smiled and said, "This is the duty of the chief manager, what does it have to do with you?" Now I will recall your secret method of roasting sheep and show you a good hand at night. ”

Liu Renyuan was stunned for a moment, only to feel that the whole ship had gradually deviated to the side......

The wind blows the sails, producing a huge thrust, the sailboat turns right after reaching the Wusong Pass, the huge hull draws a huge arc on the river surface, in order to resist the strong centrifugal force, the craftsman who acts as a sailor drives the warship to make the upper part of the ship fall sharply inward, leaving a white arc-shaped water mark behind the stern.

After a quick turn, the hull slowly returned to the right, and at this time it still entered the Yangtze River waterway, and the course turned to the southeast, just in the headwind.

Liu Renyuan was slightly nervous, his eyes looked at the bulging sail for a while, and looked at the bow of the ship chopping waves for a while.

The headwind struck, and the speed of the ship slowed down significantly......

Liu Renyuan snorted twice and said unhappily: "Aren't you boasting that the water surface can sail against the wind?" ! I knew that the old sunspot was untrustworthy, and he had to let the old sunspot roast ten and eight sheep at night......"

In his heart, there is no joy and happiness of winning the bet, only disappointment and sigh......

If there really were such warships that could sail against the wind, they would be able to completely get rid of the dependence of sea ships on the monsoon. Since ancient times, ships have relied on the monsoon wind to achieve the purpose of long-distance voyage when sailing on the sea.

In ancient times, when there was no mechanical power, sailing ships relied mainly on monsoons and changes in ocean currents, of which the monsoon was the decisive factor. "The ships went to November and December, and the north wind was blowing; Come in May and June, and the south wind. "Whether you go to Nanyang or go to sea from Jiangnan to Goguryeo and Wa, you have to rely on the monsoon to provide power. If you miss the typhoon season, you will have to wait another year......

However, if there is a sea ship that can sail in the wind, it can go back and forth from the south to the north all year round, which is equivalent to a merchant ship that can go back and forth to Goguryeo and the Wa Kingdom several times a year, and the profits brought by this are almost ten times or even dozens of times more!

And for the sailor warship, it means that you can go to sea to destroy pirates anytime and anywhere!

Liu Renyuan was extremely disappointed in his heart, sighed, and complained: "It's like it's true, I almost deceived ......."

Before the words fell, the hull of the ship shook suddenly!

Immediately afterward, Liu Renyuan felt that the warship under him was like a war horse that had been whipped severely, and suddenly increased its speed to the limit!

Liu Ren opened his mouth wide and watched in amazement as the warship under him sailed forward with a strange trajectory on the wide river, running faster and faster, running faster and faster, like a galloping horse!

Liu Ren said consciously: "Mother...... Ahem, ahem! ”

But he was poured into his mouth by a mouthful of river wind, and he almost choked on his back!

Su Dingfang was also dumbfounded, he can really sail against the wind......

Liu Renliang looked excited, but Pei Xingjian had already shouted with Xi Junmai: "Facing the wind!" Windward! Sure enough, you can sail into the wind! Hahaha, the chief manager is a genius, he can really sail against the wind! ”

Su Dingfang smashed his fist on the fence, exhaled a long breath, and the river breeze blew in his face, his face was refreshing, his clothes were fierce, and his spirit was flying!

With this sharp weapon, why can't you worry about the seven seas?

Liu Renyuan had already slipped into the cabin under the lookout, grabbed Liang Renfang, who was talking to Fang Jun, and shouted excitedly like a child: "I can really sail against the wind!" Ahaha! I didn't say it, I was completely convinced, and I was convinced! Tonight, you should cook the whole sheep yourself, and you are willing to lose the bet, haha! ”

In fact, strictly speaking, this is not really sailing against the wind.

According to the principle of aerodynamics, as the velocity of the fluid increases, the pressure decreases. In order for the air to bypass the outwardly curved sail, it has to pick up speed, so the pressure decreases, creating a suction force that pulls the sail to the side. The pressure dropping on the leeward side of the sail creates a considerable amount of suction, which can be twice as strong as the upwind side pushing the sail.

The suction and thrust generated by the wind on both sides of the sail keeps the boat sideways; But the ship's own bottom-up device prevented the ship from moving sideways, so the wind split into two components, one to propel the sailboat forward, and the other to tilt the ship to the leeward side, but this force obviously did not tip the bulky hull overturned......

To be precise, it should be crosswind sailing.

But that's not a problem at all!

As long as you can maintain your speed or even increase slightly when the wind is upwind, does it matter if it is a headwind or a headwind?

Liang Renfang said with a smile: "Captain Liu doesn't want to be bothered, whether it is the structure of this ship or the design of those spinnakers, they are all from the hands of the chief manager, if you want to cook the whole sheep, you should give it to the chief manager!" ”

Liu Renyuan laughed and said, "No problem! Tonight, I will be a cook, so that everyone can often carve the taste of roast sheep! Boss, you're a god! The speed of this ship is simply too fast, before Director Liang said that it was only seven or eight hours to set off from Laizhou to Liaodong, and he thought he was bragging, but now it seems that it is true, and it really makes a certain increase in knowledge! ”

Fang Jun smiled: "This is exciting? This kind of ship is indeed fast, but Benhou values its flexibility and maneuverability, which is very suitable as a warship. If you talk about speed alone, there are even faster than it! ”