"Master Wang. Ｘ”

"Master Wang is here."

“……”

In the middle of the night, hundreds of thieves appeared in a blacksmith shop near Dafeng Terrace.

This Master Wang had close cooperation with the Kyushu Academy of Sciences before, and the steam engine was built by Master Wang.

When Master Wang opened the door with sleepy eyes, he was startled when he saw hundreds of people standing at the door, and then looked at Liu Jinghong and a few people who took the lead: "You, why are you here?" ”

"Can we go in and talk."

Liu Jinghong looked around as a thief.

"Come on, come in, alas, it's freezing this day, come in."

Master Wang gave way to the door, and hundreds of mermaids poured into the courtyard. I didn't notice at all that on the dark street corner, there was a young man in a plush cotton robe, and the man who stood next to the boy like an iron tower.

"Li Zhen, what are they doing?"

Li Zhen took off the hat of the fox fur, blew the dust on the plush, and said with a smile: "It must be a big thing." ”

"Aren't you going to stop it?"

"Well, I used to take the lead. How can I stop it? Can you stop it? It's all a bunch of people who aren't afraid of death. ”

“……”

In the courtyard, when Master Wang saw the drawings drawn by Liu Jinghong and others, he was a little stupid: "This is ...... What's this? ”

On the drawing, a strange object is described in pencil. The whole body is made of tarpaulin, a bit of a parachute, but it is not round. Rather, it is a flattened type.

It is about ten meters long and about two meters wide. The two ends are rounded in shape, double-layered, and connected with a tarpaulin of the same material in the middle.

Paragliding!

The ghost knows how Liu Jinghong studied this thing, he thought about it for three days, and he actually figured out what a paraglider looks like.

"Master Wang, don't care what this is, we have to work in your yard. Although you are an iron worker, you must have some insight into manual work, right? If you can't, that's okay, we'll just borrow this place from you and we'll do it ourselves. ”

Master Wang nodded: "If you need any help, you can tell me." ”

"Well, it's not convenient for us to come forward yet. I also asked Master Wang to help us buy some tarpaulin, as well as pins, nylon threads, ......"

After Liu Jinghong said the materials, he gave Master Wang money, and Master Wang immediately took his apprentice out to purchase.

When Master Wang left, everyone sat cross-legged in the courtyard and began to discuss.

"If I'm not mistaken, according to aerodynamics, there are experiments in fluid dynamics. The paraglider designed this time can achieve the gliding effect. ”

"Brother Jinghong, why do you have a long brain? Can this also be imagined? ”

"No, I just made guesses and assumptions. This is what the wings of birds look like, and most of the time birds can fly into the sky because of the forces in the air. And we can't make something that can imitate flapping wings, so we can use this parachute made to imitate wings to verify it. ”

"Well, that makes sense. Both parachutes have proven that it is absolutely possible to slow down a freefall by using wind resistance. On the basis of this parachute, it is really possible to glide by adding a facility to control the direction of the forward and left and right. ”

Liu Jinghong got a large glass fish tank and filled it with water: "Let's conduct such an experiment first. ”

"We compare the water in this tank to air. Compare the resistance in water to the resistance of air. This allows the experiment to be carried out first. ”

“……”

Taking advantage of Master Wang's efforts to go out to buy materials, everyone sat around and cut out a paragliding model out of cloth.

On the model of the paraglider, a stone is tied with a rope.

That piece of cloth in the shape of a paraglider replaced the paraglider. Stones, instead of people. The stone can produce a falling force, but the cloth can produce a rising force. As soon as the two forces are balanced and placed in the water, the purpose is achieved.

"According to this dynamic, the angle of inclination of the paraglider is to be adjusted. Because the cloth is soft, we can use the different lengths of the rope to achieve the angle of inclination......"

When Liu Jinghong had everything ready, Lin Xiufeng said, "I bet that this stone and cloth will go down at an oblique angle in the process of sinking. That is, the forward force appears. ”

"Hehe, wait and see."

“……”

When Liu Jinghong let go, sure enough, the stone fell on the cloth and slowly sank in the water. At first it was just sinking, but as the weight of the stone straightened the rope, the cloth tensed instantly, and then began to move slowly forward and downward.

"Theoretical and experimental success. You just need to wait for the physical appearance and verify it yourself. ”

Liu Jinghong looked at the fish tank excitedly.

Everyone was also a little inexplicably excited.

"When the speed of descent is controllable, we actually only need a forward force to achieve the meaning of flight."

"No, it's gliding."

“……”

Master Wang quickly bought the materials back, and then under the leadership of Liu Jinghong, everyone lit the lamp, sat in the yard and began to sew.

"Let's hurry."

"Aim to finish the experiment before dawn."

"As soon as the delay lasts for a long time, Master Li will know."

"Come on, everyone."

"The oilcloth must be sewn tightly, it's a matter of life. Tear in the air, and the fun will be great. ”

"Just in case, let's get another parachute, shall we?"

“……”

When Master Wang knew that this group of people had come up with this device and were about to jump down from the cliff, their souls were scared.

"No, no, you're too dangerous. Does Master Li know? No, I have to tell Master Li. ”

Liu Jinghong's eyes glared: "Tie them up for me!" ”

Master Wang and several of his disciples, who are the opponents of these hundreds of people, were tied up and gagged after dividing five by two.

"Woohoo."

Master Wang was anxious and wanted to howl constantly, but he could only make a whining sound.

Qin Enze smiled and said, "I'll wronged you first." We'll be back to you after we're done with the experiment. ”

"Woo woo" Master Wang kept struggling, he was really anxious. These people are simply incomprehensible lunatics.

In about two hours, with the concerted efforts of hundreds of people, the paragliding was ready.

"Let's go."

"It's almost dawn, quick, go to that nameless cliff by the sea."

"Let's take a test flight on the Nameless Cliff. It's on the sea, and even if you fail, you can still fall into the sea to save your life. ”

"Hurry up, hurry up."

“……”

A group of people urged, carrying the paragliders that had been made in a hurry, and they swarmed towards the nameless cliff by the sea.

Not long after they left, Li Zhen walked out of the corner: "I'll go follow them." Qi stunned, you go and untie Master Wang. ”

"Got it."

“……”

Looking at the people in front of him who had disappeared with a smoke, Li Zhen was a little tired: "I don't know the principle yet, so I started experimenting." Alas. ”r