"Tear!"

Accompanied by the harsh sound of tape tearing, the five-meter-long red seal separated from the box and was thrown by Chen Yu to a height of 3,400 meters.

In order to make the audience see clearly, he opened his body sideways, stood on the left side of the express box, and slowly lifted the left box lid facing the camera, revealing the light blue cylinder inside it.

Then, Chen Yu walked to the right and lifted the lid on the right. The whole picture of the product finally showed in the eyes of Chen Yu and more than 20 million viewers...

【Damn! Cannon barrel?】

【This is not very smart Yazi.】

【A bit like Dongfeng Express!】

【Maybe it is a nuclear bomb launch pad.】

[Electromagnetic cannon hammer! Summon cannon sister!]

【It is clearly a planetary engine…】

[Um, no matter how awesome you are, do you dare to go live in the Forbidden City on Monday?]

"Um……"

After taking four or five steps back, Chen Yu carefully observed the shape of the blue cylinder and frowned and thought.

Like many viewers, he only looked at his appearance, and even when he was on the scene, he couldn't recognize what it was.

"Come on, help."

He hooked his hand at Xiao Taohong, and the two completely separated the express box from the product.

"call……"

After throwing the box away, Chen Yu controlled the camera to observe the cylinder 360° up, down, left and right, but still could not determine its real use.

"After the unboxing process is completed, everyone should be like me, and they can't figure out what it is. From the portal, to the weather console, and then to the floating castle, the more future products are, the more they are, the more they are beyond our imagination."

With his hand, Chen Yu took a card from the locket on the right side of the cylinder: "But fortunately, with the help of the instruction manual, we 'ignorant' ancients can explore the mystery of the future."

As he said that, Chen Yu skillfully activated the card switch and slid it carefully to read it.

"Damn?"

As soon as he saw the name of the product, Chen Yu couldn't help but exclaim and quickly accelerated. As the understanding gradually deepened, his surprise was immediately shocked, and then changed from shock to praise... he kept muttering to himself.

"magic……"

“It’s so cool…”

"incredible……"

"It's amazing!"

Since this card does not have projection capabilities, only Chen Yu could see the content and instructions on the playback. The 20 million viewers in the live broadcast room were itchy, but they could only wait anxiously and send out barrages of urging.

After more than ten minutes of "cold scene", Chen Yu put down the card, looked at the camera and was silent for a long time, and finally sighed: "It's so amazing. It takes more willful designers to create this kind of product."

"Do you know what it is for?"

【You don’t say it! How do we know?!】

[Mad! The anchor definitely did it on purpose!]

【The cameraman adds rice today.】

[This damn show effect! Don't keep it aside!]

[I don't know what you are talking about, I'm just here to see the female assistant.]

[Looking at the same time as the female assistant. Can you discuss it so well with just a big iron rod? tm a group of gay guys!]

[I watched all live broadcast rooms, with a total of more than 20 million viewers! Don’t you have to go to school and work?]

After inserting the instruction manual back into the mount, Chen Yu stroked the smooth surface of the cylinder a few times, sorted out the words for a while, and said, "This product is difficult to explain in one sentence in two sentences. Because it involves a lot of knowledge about astronomy, chemistry, physics, aviation and aerospace."

"Yes, this is an aerospace product. A product that no one has ever imagined in 2020. Before, all the technology, even if it cannot be created in modern times, has been described by scientists, families, or various cultural works. Each technology has theoretical support."

"But it." Chen Yu patted the cylinder: "It is blank in human history. At least, I have never heard of anyone, or any cultural work, that has its shadow."

After a slight pause, Chen Yu straightened his back and recalled the knowledge he had learned over the past few weeks in his mind, saying aloud: "The unboxing process has ended, and I will enter the explanation and introduction. I will try to use concise language to introduce the magic and absurdity of this product to you."

"First of all, there are only two ways for humans to enter space."

"One, rocket push, two, aviation aircraft. The latter also needs rocket push. So strictly speaking, when humans enter space, only rockets can push this path."

"But due to the high cost of rocket propulsion, the scientific community has always wanted to find a more efficient way. The most famous and most feasible one is the space elevator."

As he said that, Chen Yu stretched out a finger: "In order to introduce the space elevator, I have to mention a character. Thiorkovsky of Maoguo. The audience in the live broadcast room may not know about this name. But you must have heard of his title."

"He is honored as the father of aerospace!"

"That sentence: The earth is the cradle of human beings, but human beings will not stay in the cradle forever. It is also what this great god said."

"This deaf god was born in 1857 when there was no airplane. But in that era, before humans could study how to take off, he began to study how to get into the sky, how to fly into space, and into the universe."

"He saw that the pierced balloon would be blown by the airflow, and understood the reaction force, and immediately created the principle of the jet rocket and completed the formula and calculation of the system. One of the formulas was also named after him, called the Thiorkovsky formula."

“v=v0xln(m0/m1).”

"This rocket speed formula is easy to deduce, and it can be calculated with just a little calculus. I won't delay this simple problem."

【Ah! It’s the boss! My eyes!】

【show!】

[I felt the ridicule from the wise.]

【Mom asked me what I wanted to jump into the toilet and watch videos…】

[A liberal arts student indicates that you have a grammar error. (Smile)]

Holding the mask forward, Chen Yu continued: "According to the formula, if you want to go to the sky, the jet speed must be larger, so the mass ratio of m0/m1 is also larger. m0 is the original mass of the rocket, and m1 is the remaining mass after the jet. The 'ratio' between the two means what does it mean?"

【have no idea.】

【Don't know +1.】

【You can understand every sentence, but you can’t understand it at all.】

【Everyone understands, but not at all…】

【Awesome…】

After pausing for a moment, Chen Yu smiled: "It means that the mass of fuel is greater. Therefore, most of the mass of the Rockets is fuel. It has not changed until now. This is also the main reason for the high cost of space operations, which is too wasteful."

"After completing the principle of jet rockets, the god went further, designated liquid fuel, and then established the principle of multi-stage rockets... Until he completed this series of great achievements, humans didn't even know how to build aircraft."

"There may be an audience to ask, what does he have to do with the Sky Elevator? Why should he be introduced to him?"

"Because, the space elevator was also proposed by this god, and has completed all theories and calculations, including the structural strength of the material, the height of the space elevator, the counterweight ratio, the 36,000 kilometers of balance point, etc. As long as the materials in it meet the standards, humans can grasp the legacy of the father of space and directly create a space elevator."

"This is not a delusion! In 2019, Japan and China successively created qualified materials and have started the space elevator construction plan. The project will be fully launched by 2050 at most, and everyone will definitely see it in their lifetime."

"but……"

Chen Yu stretched out his hand and patted the surface of the cylinder: "With this thing, the space elevator plan can be given up. It doesn't take 2050, with the current technology of human beings, there is a foundation for building this product."

"The only thing that limits its birth time is the brains of the scientific community."

"Its name is..."

"The earth squirts water!"
Chapter completed!