Tang Dynasty good brother-in-law

Chapter 718 The Running Ship

"Full speed, full speed, full speed..." Liu Mu shouted, waving one hand forward continuously.

No one could hear Willow shouting, because the voice next to the steam engine was too loud.However, they could understand Liu Mu's gestures. Shovelful after shovelful of coal was poured into the furnace, and the pressure in the boiler reached a critical point.

Datang can't make pressure gauges at all right now, but the craftsmen of Datang have a way.

They made a few live buckles, and made a small mechanism at the live catch with steel sheets and other mechanisms. When the pressure reaches the upper limit of the safe value, a whistle will sound.

Then there are two whistles of danger and extreme danger.

It can be said that if the three whistles sounded at the same time, the boiler would not be far from exploding.

When the first whistle sounded faintly, the ship began to slow down the speed of adding coal, and then properly added a little water to the boiler.

The speed of the ship reached about thirty knots of later generations.

Out of cargo, empty ship, not even a few people, and only ten stones of coal.

Li Shimin stood by the water, and after hearing a long siren, he saw a boat like a galloping giant elephant, galloping towards him from the river faster than a horse.

On the boat, Li Dejian saw the Great Tang Emperor and the Emperor standing on the shore, and immediately ordered the boat to move closer to the north bank, so that the Emperor and the saint could see it more clearly.

This is an opportunity to show their faces. The craftsmen have worked hard for three years to achieve such an achievement. They also hope that the Emperor Li Shimin of the Tang Dynasty can see it.

Liu Mu felt that the direction of the bow of the boat had changed, and said something bad in his heart.

But it was too late to stop it, so he quickly signaled to Dugu Lanruo on the shore to hide.

Dugu Lanruo came to her senses, but she was still far away from Tang Emperor Li Shimin, and while ordering the guards to hurry over to speak, she dragged her eldest grandson Wugou to hide behind a big tree.

Li Shimin on the bank not only did not hide, but took two steps forward to see more clearly, he was already standing by the water.

The boat passed at a high speed. It can be said that it was the boat’s highest speed when it passed the bank of Zhuangzi on the Jinghe River.

Li Shimin saw the spray, but he still didn't take half a step back, and pushed aside the forbidden army who came to persuade him to leave.

Liu Mu was standing on the bow of the boat, and the bow of the boat was slightly lifted from the water.

When the boat passed by Li Shimin, the distance between Liu Mu and Li Shimin was less than three feet, and the water stirred up by the boat drenched Li Shimin from head to toe.

Tang Emperor Li Shimin didn't even blink, staring at Liu Mu and the boat.

Going up against the current, faster than ordinary horses, the heat in Li Shimin's heart has already made him not care about the icy river water pouring down from his head.

The attendants didn't dare to think this way, some hurriedly brought charcoal fire, and some went to get dry cloth.

Fortunately, the weather was cold, and Li Shimin was wearing a mink coat, which would have been drenched in an ordinary silk padded gown, but now his hair was completely wet, but Li Shimin had no intention of leaving.

Calling the craftsmen who stayed in the dock, Li Shimin asked, "Is this boat finished?"

"Saint, the ship is still on the ship's building and has not been loaded. There are still two trials for this trial ship, that is, the heavy ship tugboat to test the water. Fifteen heavy tank grain ships have been prepared at the Jinghe wharf, with a total of [-] supplies. Grain tanker."

"En." Li Shimin nodded, indicating to arrange for someone to prepare tables and chairs, light a fire, and he was going to sit here and watch a result come out.

After a while, Liumu turned around from a place upstream where the river channel was wider.

Liu Mu ran faster when going down the river, but this time he passed through the other side of the river, splashing the Tang Emperor with water just now, and Li Dejian's face turned pale from nervousness.

The tables and chairs were set up, and several fires were lit.

Changsun Wugou and Dugu Lanruo also came to the shore, and this time the guards specially prepared a huge tarpaulin, so that they could immediately rush forward to block the splash if there was another splash of water.

But this time, the situation is different.

The speed of the boat upstream is not fast, but it is faster than a sailboat, and not slower than a carriage.

Liu Mu ordered someone to turn the hourglass upside down, and then kept putting the rope to calculate the speed.

"Fifteen boats full of tanks can't be pulled, and the steam engine has already made abnormal noises. This is not appropriate. My opinion is to reduce six boats." Li Dejian said in Liu Mu's ear, and Liu Mu nodded: "Signature, let the back let go Sailing six boats."

The speed of only pulling the nine tank boats still did not come up, but the speed was much more stable.

After about one stick of incense, the person hanging on the side of the boat shouted: "The speed is seventy."

The speed called here is 35, which means [-] miles per hour, or [-] kilometers in two hours, or [-] kilometers per hour, which is about [-] knots.

"Signature, three boats for each stick of incense." Liu Mu shouted.

Someone here is constantly recording the speed.

Five trough grain ships can reach a speed of fifteen knots, which is one hundred and five miles per hour.

"The total length of the canal from Chang'an to Huating is about [-] miles. Based on the average speed of [-] miles, it can travel from Yangzhou to Chang'an in [-] hours." Li Dejian said excitedly.

But Liu Mu said: "Do you think that the water flow of the small river Jinghe can be compared with the upstream of the Yangtze River? If it takes 45 hours, it is the fastest speed. And can our steam engine continuously drag this heavy boat?" Running for four days and four nights is still an unknown.”

Li Dejian nodded, Liu Mu was right.

The water speed of the Jing River is considered gentle. If it is changed to the Yangtze River or a canal with a fast current, the speed can only be calculated based on the top speed of 45 miles and the average speed of [-] miles.Then it takes [-] hours to swim upstream.

The ship was pulled back to the dock again, and it took two days to install the ship building after checking the steam engine.

Li Yuan, who had been watching all this silently, waited until Liu Mu walked up to Li Shimin before saying, "You guys are keeping a secret of such a big thing."

"Father, do you think this big toy is interesting?"

"You don't understand this big toy." Li Yuan shook his head, then stretched out his hand to point to the Jinghe River: "Let's talk about this Jinghe River, if you go upstream with this boat, you can go to Longzhou in a day and night, or dig another canal Changtai, just over 50 li, turn to Taohe..."

Li Yuan was studying the Western Expedition last night. In his opinion, he only needs to dig a total of more than 200 miles of canals. After repairing some canals, the Liumu ship can go straight up against the current and reach Haizi.That is Qinghai Lake.

Then build a large dock, a large warehouse area, and garrison troops in Haizi.

Then after the Western Expedition, it had a miraculous effect on the stabilization of the Western Regions in the Tang Dynasty, and the transportation capacity of this transportation of materials and troops was a hundred times stronger than that of horse-drawn carts and rickshaws.

(End of this chapter)