Coming out of the royal hunting ground, Xia Hongsheng pondered in his heart all night. Pen ~ fun ~ pavilion www.biquge.info

The prototype of this steam train is basically completed. It's even a little more advanced than the prototype. It's still a little slow, but at least it's faster than the first steam train in history.

In the direction of the back, the first one, naturally, is to improve the steam locomotive. Xia Hongsheng has a vested idea, the maximum speed of the steam train can reach more than 100 kilometers per hour, and there is a lot of room for improvement and upgrading.

The second is the application of the steam engine to the ironclad ship. The technology of ironclad ships is advanced, and it is not just talking. The ironclad ship directly jumped over the paddle wheel and used the propeller instead. Although the current way of driving the propeller is very backward, it requires manpower pedal to drive the propeller shaft, so as to drive the propeller, which is very laborious and requires many people to pedal together. Therefore, under the cabin of the ironclad ship, there is a compartment with a foot pedal device for manpower, and there are hundreds of people at every turn. Therefore, the propeller is only used for acceleration, emergency acceleration, steering, emergency steering, there is no wind on the sea surface, etc., and it usually mainly relies on wind power. If a two-cylinder steam engine can be made and then applied to the ship to drive the propeller, then Datang's ironclad ship will really be a ship that is a thousand years ahead of the world.

The third direction is the internal combustion engine. The internal combustion engine is the technology that will inevitably replace the steam engine, what Xia Hongsheng can do is to give a principle, give a finished effect, and the rest can only rely on the wisdom of the Tang Dynasty people to work in that direction according to the principle. Therefore, the sooner you start researching it, the better - even if it takes two hundred years to develop it, it is seven or eight hundred years ahead of the world!

At this moment, the four of them had gathered together again and went to the palace together.

Xia Hongsheng was still thinking about what he had thought about last night.

Seeing that Xia Hongsheng didn't speak along the way, Li Tai asked, "Brother Sheng, what are you thinking?" ”

"I'm thinking about my 10,000-ton giant ship in Datang in the future." Xia Hongsheng smiled and said: "If the steam engine is used on ironclad ships, from the Tang Dynasty to Persia in the future, I am afraid that the time will be at least half of what it is now, or even faster, and the load will be more." At that time, my Datang was really the overlord of Shanghai. ”

While speaking, the four of them had already arrived outside Li Shimin's study, and the four of them went in as soon as the chamberlain announced.

Li Shimin looked up, put down the music in his hand, and smiled: "Heh, why did you four boys come here together today." ”

Xia Hongsheng, Li Tai, and Li Ke looked at Li Chengqian together.

Li Chengqian took a step forward, saluted again, and said, "Back to my father, the child is here today to report something to His Majesty. ”

"Say." Li Shimin leaned back and said.

"Since five years ago, Shizun has been teaching the concept of the steam engine in Jingyang Academy. Since then, the blue finch has been working on the steam engine. After three years, the steam engine was made under the guidance of the master, and it took another two years to improve it, and the steam locomotive was tested and the steam locomotive was made. Li Chengqian said to Li Shimin: "Now that the test run has been successful, I specially came to report to my father, and asked my father to come to the test site in person and try to take the train!" ”

"Train ......" Li Shimin groaned, and suddenly looked up at Xia Hongsheng: "Is it the tool that the virtuous son-in-law said that from Chang'an to Liaodong, it can also come from morning to night?!" ”

"It's that thing." Li Tai said: "However, father, this train has only just been developed, and it has not yet reached such a fast speed. In the future, with the improvement and improvement of the steam engine, the train, and the rails, etc., the speed will be further increased. ”

"And what's the speed now?" Li Shimin hurriedly asked.

"When the car is empty, it can run sixty kilometers in one hour, that is, one hundred and twenty miles." Li Tai replied: "If it is full, it will be slow." You can run twenty kilometers in one hour, that is, forty miles. ”

"One hundred and twenty miles in an hour, the best treasure horse in my hand can do it." Li Shimin touched his chin and said.

"Father, this account can't be counted like this." Li Ke stepped forward and said: "You have a good treasure horse in your hand, but how can that kind of treasure horse be something that everyone can have?" Naturally, not everyone can run 120 miles in an hour. Besides, the Pony can only carry one person, but this train ......"

"How much can it carry?" Li Shimin was very interested and asked.

Xia Hongsheng stepped forward with a smile and said, "Well, my father-in-law also asked the boys to sell a pass." After all, hearing is false, seeing is believing! ”

"So, you mean I have to go?" Li Shimin said with a smile.

"Father-in-law, I will never disappoint you." Xia Hongsheng patted his chest and reassured.

Li Shimin thought for a while and asked, "Where is it?" ”

"Back to my father, in the royal hunting ground outside Chang'an City." Li Tai said: "I can't find such a big place elsewhere, so the child asked the eldest brother to teach the prince and allowed him to test it inside." ”

"This thing is of great use to the Tang Dynasty, and it is no less than gunpowder in the future. It is of great significance, and if it is not successful, I dare not report it to my father too soon. Li Chengqian said: "It's an extremely confidential thing, outsiders are not allowed to enter the royal hunting ground, and there are guard handles, and the place is big enough." So the boy helped the green finch put things in it and experimented with it. I didn't ask my father's permission in advance, and I asked my father to forgive his sins! ”

"Hunting ground...... You are already qualified to go inside, and it doesn't matter. Li Shimin waved his hand, glanced at Xia Hongsheng, paused, and suddenly smiled: "It's better to choose a day than to hit the day, I just don't have much business today." After listening to what you said, I was also curious. Let's go over and have a look while it's still early! ”

Li Shimin stood up and said to Wang De: "Go and prepare." ”

"Yes, saint." Wang De bowed and went down to order preparations.

When he arrived at the door, Li Shimin stopped him again and said, "Go to the three provinces and call Fang Qing and them." ”

"Yes." Wang De took the decree and left.

In a short time, the carriage and guards were ready.

In addition, there was a team of palace guards, who had already left the palace in advance and went to the hunting ground in the outskirts of Chang'an.

Naturally, they go to find out the situation in advance, which is the usual practice. Otherwise, in case of a rebellion, who is going to ambush there?

Xia Hongsheng and the others were also prepared, and in order to avoid misunderstandings, they had already let the soldiers who had tested how many people they could carry before. At that time, if it is really necessary, let Li Shimin make his own order to transfer people. It's a bit of a hassle, but there won't be any misunderstanding.

Li Shimin got into the carriage, and asked Xia Hongsheng and the four of them to go up too, and waited for the eldest grandson Wuji, Fang Xuanling and others, and then went out of the palace together and went outside Chang'an City.

(I finally don't have to take my son to do rehabilitation today, I have done two courses of treatment since May, and I am in the hospital most of the time every day, so I finally don't have to go today.) Two more chapters. Recheck the day after tomorrow and see if you need to continue with the third course of treatment. I hope not. ）