"This ...... It should be, right?" Jin Cheng hesitated. Pen, fun, pavilion www. biquge。 info

"Yes. Compared with Jin Cheng's uncertainty, Lao Liu, who often deals with various instruments, must have more. After a moment's thought, he affirmed, "Since the propeller is fixed to the sailboat, the force that the propeller bears will eventually be transmitted to the sailboat anyway." ”

After listening to Old Liu Tou's words, He Wei nodded with a little relief, and continued to ask: "Then can Old Senior Liu see where the direction of this power is heading?"

"Direction, this ......" Lao Liu Tou originally only saw that this power must exist, and it will definitely be transmitted to the sailboat in the end. However, regarding the direction of this power, Lao Liu Tou didn't think much about it.

At this time, since He Wei specifically mentioned it, it means that the direction of this power is very important. So, Lao Liu Tou frowned and began to think hard.

Lao Liu Tou had just carefully studied the working principle of the propeller, so he knew very well that if the wind created by the propeller was towards the bow of the sailboat, then the force to be borne by the propeller itself should be in the opposite direction of the wind, that is, towards the stern of the sailboat!

"It's the stern! I see!" After figuring out the direction of the various forces on the sailboat, Old Liu Tou immediately understood why He Wu had said that his idea was very good, but it was unrealistic!

"Although the wind created by the propeller blows the sails, it gives the sailboat a forward power. However, the reaction force exerted by the air on the propeller, after being transmitted through the propeller to the hull of the sailboat, is equivalent to exerting a force on the sailing ship to stop the sailboat. And because there is a relationship between the action and reaction forces between these two forces, they should be the same in magnitude. As a result, these two forces cancel each other out, and in the end the sailboat can neither move forward nor go back!" concludes Ho.

After He Wei's explanation, Jin Ling'er, who had been listening like falling into the clouds, also roughly understood at this time, so she said: "If I say this, the reason why I can't lift the bamboo basket and myself is because my hands are carrying the bamboo basket at the same time, and my feet are also stepping on the bamboo basket. Moreover, the strength of my hands to carry the basket and the strength of my feet to step on the basket are the same size, canceling each other out?"

"Yes, that's it. He Wei smiled.

"Alas, I used to hear people say that listening to your words is better than reading a book for ten years, but the old man never understood what this sentence meant. But today, after listening to He Gongzi's words, the old man finally understands that this is the real better than reading for ten years!"

He Wei smiled when he heard this, and said: "Old Liu has a good reputation, and there is just a precedence when he hears it. And what the younger generation just said is by no means flattering, and the idea of Liu seniors wanting to install the propeller on the sailboat is really good. It's just that Mr. Liu's predecessors didn't know enough about the propeller because they were in contact with the propeller for the first time, so they chose the wrong position. ”

Old Liu Tou didn't know if He Wei said these words to comfort him, or what. So I didn't know what to say for a while, so I finally had to shake my head and smile bitterly and say nothing.

And after Jin Ling'er finally figured out what the effect of force was mutual, she became more and more concerned about what He Wei said. At this time, Jin Ling'er heard that He Wei's idea of demoting Lao Liu Tou again was good, and also said that Lao Liu Tou chose the wrong position. So he asked, "According to you, where should that propeller be installed?"

"Underwater, of course!" replied Ho.

"Underwater, if it's underwater, won't the wind blow out?" Jin Ling'er wondered.

When He Wu heard this, he asked rhetorically with a smile: "Who told you that the propeller is used to blow the wind? Can't I put it under the water and let it stir the water?"

"Didn't Ann Propeller want the sailboat to run faster? You put the propeller under the water to stir up the water, how can you make the sailboat run?" Jin Ling'er pursed her lips and continued to ask.

He Wei smiled slyly and said, "Well...... Didn't you just get it? Guess what!"

"You ......! Hmph, don't talk about pulling down, I don't know about it yet!" Jin Ling'er said angrily. However, although Jin Ling'er looked angry on the surface, while playing the "eldest lady's temper", she was also silently thinking about how to make the sailboat run faster after installing the propeller below the water surface.

"Put it in the stern! And put the propeller with its back to the bow, so that when the propeller turns, it stirs up the water under the stern, and pushes the water under the stern away like it pushes the air! And the propeller is fixed to the sailboat's hull, so this thrust will eventually become a thrust that pushes the sailboat forward!" said Lao Liu Tou excitedly.

What does this mean? No one understands what it means better than Lao Liutou!

This means that if you put a propeller on a boat and an internal combustion engine that can drive the propeller around, you can let the boat move freely in the water with only a small amount of essential oil!

No need for paddles!

No need for a rowman!

No human labor is required!

All it takes is a small amount of essential oil to get the boat running on its own!

Also, being able to build a boat that can run on the water on its own without human labor is not the most important thing!

The car is!

Since a boat can rely on the reaction force generated by the propeller to stir the water to exercise on the water, why can't the car rely on the same method to exercise on the ground?

As soon as he thought of this possibility, Lao Liu Tou couldn't help but feel itchy and said eagerly: "Gongzi He, since the propeller can replace the oarsman and push the boat on the water, can it also replace the horse and push the carriage on the ground?"

"Yes. However, the carriage is ...... The propeller could not be mounted directly behind the carriage. Also, the shape of the propeller also needs to be changed. He Wei replied.

As soon as Lao Liu Tou heard He Wei's answer, he immediately understood what he was thinking, and the idea of directly imitating a boat, installing a propeller behind the buttocks, and then pushing the carriage through reaction force was also unrealistic. Therefore, he immediately bowed down and asked He Wei: "Uh...... He Gongzi, please speak. ”

"Just change the propeller into a transmission gear, or a transmission lever, and directly transmit the rotating power from the internal combustion engine to the wheels and drive the wheels to rotate. He worries directly.