A propeller is a propeller. Li Yi did not take any detours when designing it.
He also calculated the propeller bit by bit and provided the data at the same time.
When the craftsmen were making the mold, they would dig bit by bit and finally understand the mold.
If there was no problem with the transmission, the propeller's rotation would produce a thrust that other propellers could not compare with.
"My craftsmen in Zhuangzi are the best. What five axis linkage? What printing? Do I need to be so precise? "
Li Yi was excited. This speed could scare the enemy to death in a naval battle.
Li Chengqi, Li Chengqi, and a child could not understand what Li Yi was talking about.
"Brother, I have thought it through. Let's not build a steam engine train first. We should build a steam engine ship first."
Li Yi was inspired and stopped thinking about the tracks.
Transportation requires speed, and going against the current requires power.
Paddle steamers can provide power and have a large surface area. The power conversion ratio is lower than that of a propeller ship.
If a thousand-ton ship is equipped with a propeller and a steam engine, the journey from the Yellow River to Hukou Waterfall can be shortened by dozens of times.
The Yangtze River is even better. Trackers need to change their profession.
Seafood could be avoided, but when it came to water transportation, any river that could pass through steam ships would become an important channel of transportation.
Everyone still does not understand what a steam engine train and a steam engine ship is. The only thing they know is that Li Yi can always come up with technology that no one dares to imagine.
A ship that does not care about the direction of the wind can sail against the current. Now, there is a faster ship that can go against the current.
"Brother Yi, build a bigger ship. The merchants will pay the taxes." Li Longji thought of a good idea.
The merchants pay the taxes and use the receipt to use the ship.
If they don't pay, they can pull the ship slowly.
Pulling the ship is not free. They have to pay the trackers. If one ship arrives first and the other ship arrives a few days later, the difference in the price should be enough to cover the tax.
"San Lang, can we eat fresh lychees from Sichuan if we use this ship to transport lychees? We can use the Han River and use horses to relay the lychees. "
Empress Wang has not eaten fresh lychees until now. She thought of the lychees from Sichuan.
In history, Yang Guifei ate lychees from Shu, not from Lingnan.
The lychees of Lingnan would not make it in time even if they sped up to 800 miles.
Lychees from Shu could be delivered by winged cavalry in two days.
"Sister-in-law, eating lychees is easy. I have a way to keep them fresh for 20 to 30 days."
Li Yi thought of something important. Previously, they had used candles to consume oxygen, but there was carbon dioxide and ethylene.
However, there was still a way to preserve the lychee, which was to control its growth and make it hibernate.
"What good idea?" Empress Wang widened her eyes, and the little fellow also widened her eyes in tacit understanding.
If someone else dared to say that they could keep lychees fresh for twenty to thirty days, Empress Wang would kick them into the water.
"Flute film and refrigeration. First, wrap the lychee tightly with the flute film, then put it in a jar with ice cubes on the outside. "
Li Yi listed out the methods he could think of. The cost was high, but it was less expensive than using fast horses.
Flute membranes were peeled from reeds, so how expensive could ice cubes be?
Empress Wang blinked, "Wrap the flute film with ice?"
Li Yi nodded, "Yes, you can use this method for many fruits, such as bananas."
Li Yi swallowed his saliva as he spoke. Of course, he wanted to eat more than just bananas.
He did not have plastic film, so he could put on a few more layers of reed film.
If he felt that the reed film would be breathable, he could brush a layer of glycerin after a few layers of reed film, and then stick the reed film.
In order to eat, he could do anything.
Otherwise, how could he deliver something like bananas?
Put the green bananas in a backpack and ride a horse all the way?
The four of them, no, not counting the little fellow, the three of them had never heard of this method of preserving food.
"Brother Yi, is it useful?" Li Longji was tempted. He also liked to eat good food.
"First, use a cucumber to test it. Pick it, wrap it, and put it in a place with ice cubes around it. Don't stick it on it, and keep it about four degrees above zero."
Li Yi was not very sure, but he had to try it.
In the past, he used plastic film to wrap the cucumber and put it in the refrigerator, and it could last for half a month.
If he could change it to plastic film, he would be able to eat many fruits.
With the new boat, he could try to ship most of the fruits from the south to Chang 'an.
The premise was that no one was allowed to stop him, and the journey would be smooth.
Li Chengqi showed an excited look. He found a profitable business. Generally, Brother Yi was not in a hurry to operate in places that were too far away.
Brother Yi's view of money was that when he needed money, he would take something out and make a lot of money.
When he did not need money, he would sell things slowly. He did not seem to have a lot of money, but he was never short of money.
"Brother Yi, let's put the preservation of food aside and find a boat. Why do you say that the propeller is faster in the water?"
Li Chengqi wanted to learn this.
Li Yi was speechless. Brother, you want to learn this? The difference between work and pressure? Where should I start?
Do you want to learn the principle of the propeller blade curved surface? Do you want to learn the distance ratio?
I don't know. It is not a field that I can learn.
After thinking for a while, Li Yi decided to explain it in a simple way.
"Brother, look, when the wheel is rotating, half of it will be above the water. When it is above the water, it is like swimming. Can you paddle with your arms above the water?
A person paddles under the water all the time, and a person spends half of their time above the water. The time they paddle is different.
When the wheel is sinking into the water, it will stabilize the water when the wheel is rotating. As for the propeller, it will be retreating all the time.
There is only a small part of the propeller that blocks the water. In other words, the same amount of strength is used to push the propeller, and half of the wheel is idling. "
Li Yi could only explain it this way. Otherwise, it would be too profound for others to understand.
Li Chengqi listened and nodded with a smile. What he meant was … … I will think about it when I go back. I really don't understand.
Li Yi controlled the rudder and slowly made a big turn. The boat returned to the dock next to the Li Family Zhuangzi.
The thin layer of ice on the river surface was removed, and everyone got off the boat.
The little guy was held by Empress Wang, and his two little legs imitated the way the adults kicked just now.
"Brother Yi, when the river above Hukou Waterfall is cleared in spring, we can put such a boat on it to transport troops and Baggage. It can be transported directly to Tubo."
Li Longji no longer thought about the problem of transporting the fruit preservation boxes. He realized that the propeller boat was fast.
Going with the current was easy, but going against the current was difficult. Originally, they were going to use a paddle wheel.
Now, things have changed. Brother Yi was bored and actually took out a new thing.
The test of the boat track at Hukou Waterfall was successful, and the upstream and downstream could be connected.
The propeller boat below did not need to follow the track. The two sections were separated, and other boats could be used. When the time comes, they could change the equipment.
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