Regarding the messages on the bullet screen.
Li Changan had a very calm expression.
In fact, what the netizens said was only superficial.
Only those who had a deeper understanding of solid rocket engine technology would understand that this dual-pulse secondary ignition technology was incompatible with the daily solid rocket theory. It was completely unconventional.
To a certain extent, the difficulty of thinking was no less than figuring out the key technical details of a hydrogen bomb overnight.
Thinking of this…
Li Changan looked at the camera and smiled.""I see that everyone is quite curious, so I'll tell you the principle behind it.”
As he spoke.
Li Changan slowly said," All of mankind's missile and launch vehicle technology, from the Saturn V that weighs more than 3,000 tons to the Sky Monkey fireworks that weigh dozens of grams, actually uses the rocket principle invented more than 1,000 years ago.”
"In other words, by continuing to blow backwards, you can obtain reverse thrust flight.”
"The earliest rockets were of course black gunpowder in bamboo tubes, which was also the most primitive solid rocket.”
" Even today, the basic principles of all the solid rockets, big and small, are not much different from the black gunpowder in bamboo tubes from more than a thousand years ago.”
" Even with the space shuttle's two solid rocket boosters with a total thrust of 2,500 tons, the material that starts the ignition is still inseparable from black gunpowder.”
"Of course, humans 'space dreams were mainly realized through rockets, which were later developed into liquid rockets. The ancestors were the German V2 missiles. The V2 used alcohol as fuel and liquid oxygen as an oxidiser. It flew out of the atmosphere for the first time."
？？？？
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The netizens were stunned.
Was this for real?
Even the little girl beside Li Changan was dumbfounded.
"Dad, do you mean that our ancestor's gunpowder theory is the same as the rocket theory?”
Daai Xiaomei asked Li Changan subconsciously.
"Of course." Li Changan nodded.”
The netizens in the live broadcast room were instantly excited.
Subtitles like 'Great Ancestor is awesome' appeared on the bullet screen.
No one knew about this before.
This thing actually has something in common with the principle of gunpowder in ancient times.
"Let's continue."
" The engine of a modern liquid rocket consists of one or more sets of circulating combustion devices," Li Changan said to everyone with a smile.”
"The main components of this thing are the turbopump and the spout. Above it are the tanks for the oxidiser and fuel.”
"In this way, all modern liquid rocket engines and fuel systems are relatively isolated.”
"However, all the solid rocket engines of the current era, from the super solid rocket engines with a diameter of more than 6.2 meters and a total length of more than 60 meters, with a single thrust of 3,000 tons, to the small solid rocket engines on the latest mini missiles.”
"Their internal structure and working principle are the same.”
"In other words, the entire solid rocket itself is a complete engine.”
"Modern solid rockets start from the top. There was a hollow combustion tube from top to bottom inside the entire combustion body, extending from the top to the bottom of the spout.”
"After the ignition, it will burn from the middle to the outer layer like a hollow dried tree trunk.”
"All the previous solid rocket engines, once ignited, would not be extinguished halfway. Unlike liquid rocket engines, which could temporarily stop the fuel pump, let the rocket stall and glide, and then restart the ignition after a period of time.”
"Until now, no one has been able to stop the ignited solid rocket engine halfway.”
Li Changan slowly said something that the netizens in the live broadcast room did not understand. In the end, he smiled and said,"This is just one of the basic principles of solid rockets. Well, it should be considered advanced physics.”
“…………”
In the entire live broadcast room.
The netizens were speechless.
It was said that there was a huge gap between people.
They didn't quite understand this sentence before.
Now.
However, he could clearly feel it.
"Awesome!"
"Although I know every word he said, I don't understand them when they are combined.”
" This is what a scientist is like, haha!"
"Advanced Physics? I even forgot about high school physics."
"Speaking of which, father-in-law, what kind of man do you think is worthy of your precious daughter?”
"Haha, someone can't sit still anymore."
"I think Zhixun can say goodbye to his silly little sister. He can't get past meeting her parents.”
"Hahahaha, my heart is stifled. Cult Master is speechless.”
"Don't mess around. Cult Master just said on the live broadcast that he and President Dai are just friends. Yes, just ordinary friends.”
"He's scared, he's scared. He's scared."
"Nonsense, he's definitely scared."
"If I were him, I would be afraid too. This father-in-law can easily alert the security bureau. Who isn't afraid?”
"That's right. If I get married and quarrel with my silly little sister, father-in-law will be furious and directly endanger national security. Hahaha!”
"The previous poster's imagination is awesome!"
The entire live broadcast room was extremely lively.
The activity level had increased by dozens of times.
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