Siheyuan: I have a mysterious factory

Grandpa Yi Zhonghai watched Xu Dajun on TV and couldn't help laughing.

Xiao Dang also saw Xu Dajun, pointed to the TV and said, "Uncle Xiaojun is on TV again, Grandpa, I want to be on TV too!"

"As long as you study hard, you will be as good as Uncle Xiaojun in the future." Yi Zhonghai said with a smile.

the other side.

Father Xu is playing mahjong.

He looked at the cards and then at the time.

The next moment, he shouted, "Old lady, it's news time, turn on the TV for me."

Mother Xu came out of the room dissatisfied.

He looked at Father Xu.

Two steps are enough to reach the TV switch.

Full of disgust.

However, she didn't say anything and turned on the TV.

Not long after, the screen of Xu Dajun being interviewed appeared on the TV.

Father Xu's face was full of embarrassment.

"See, my son is on TV again!"

The faces of several poker players around him turned black.

Father Xu now turns on the TV whenever it is news time.

They have watched the clip of Xu Dajun being interviewed no less than ten times in the past few days.

Fortunately, they don't spend the night here.

Otherwise, it is estimated that more.

"Are you playing mahjong or watching TV?" Aunt Qiu said angrily.

During this time, Aunt Qiu was the hottest.

Seeing Xu's father showing off his energy, he became angry.

"Don't worry, don't worry, I'll play again after reading this. Let me tell you, it's all because of my father that Dajun is so powerful at 1.3." Xu's father continued to show off.

Zhang Erbo coughed.

"Play the cards, play the cards, I see, you say this several times a day." Uncle Zhang was a little annoyed.

"Old Xu, we all know that your son is very good, but we are playing mahjong now. Do you want to play mahjong? If you don't play mahjong, I won't come to you next time." Aunt Li was also very angry.

Seeing the appearance of several veteran friends, Xu's father was even more proud.

"You guys are jealous of me, Hongzhong!" Father Xu said while playing cards.

The three people who were still full of anger just now suddenly became happy.

"Must!"

The three shouted at the same time.

It's three shots again...

Xu's father's face, which was full of complacency just now, suddenly darkened.

"Old Xu, I didn't mean it. No matter how good Xiaojun is, it can't change the fact that you fought badly." Aunt Qiu said proudly.

The other two nodded in agreement.

at the same time.

Boss Li also saw the domestic news immediately.

His face darkened instantly.

"The mainland actually has a satellite?! It's Xu Dajun again!" Boss Li's face was terribly cold.

.......

Chapter 140 The Top Treasure of Human Mechanical Technology RD-120

Even if the satellite launch is successful.

Everyone's research has not stopped.

It's just that now everyone doesn't need to fight like before.

Xu Dajun was not idle.

While it was late at night.

He opened the system listing again.

"System, exchange for RD-120 liquid rocket engine." Xu Dajun said.

[Ding: Congratulations to the host, the exchange was successful, and the RD-120 engine was obtained, and 800 technology points were deducted. 】

After the exchange was over, Xu Dajun was ecstatic.

The RD-120 liquid rocket engine can be said to be a legend.

It was not until 1990 that there was a more advanced RD-170 series than him.

Of course, for Xu Dajun.

RD-120 is enough for now.

At least, it is enough to make an intercontinental missile with a range of [-] kilometers.

Afterwards, Xu Dajun entered the system factory.

Looking at the engine in front of him, he couldn't help showing excitement.

If only he could figure out the engine.

It will be able to push the domestic aerospace industry to its peak.

After all 16, in the 21st century our country landed on the moon and explored Mars.

The rocket engines used are only the Y-100 series.

It can also be seen from here how exaggerated this engine is.

Xu Dajun took a deep breath to calm himself down.

The RD-120 liquid rocket engine has a diameter of four meters and a length of more than ten meters.

It's definitely a monster.

It is definitely the crystallization of the highest mechanical technology.

Looking at it, Xu Dajun couldn't bear to tear it down.

This is definitely one of the greatest inventions in the history of human mechanical technology.

"System, disassemble!" Xu Dajun finally gave the order.

After all, he exchanged this engine for research.

Don't look, this engine is almost the most advanced invention in the history of human development.

In front of the system, there is still no resistance.

In just a few minutes, the entire engine was disassembled into countless parts.

These parts are neatly placed on the ground.

Xu Dajun went up to check and stroked them.

There is still a little excitement in my heart.

Perhaps, such a masterpiece can be produced.

It's every man's dream.

Taking a deep breath again, Xu Dajun adjusted his mood and devoted himself to the research.

With the understanding of the previous liquid rocket engine.

Xu Dajun quickly figured out the principle of RD-120.

Then, detailed research began.

Measure each part to create the most detailed drawings possible.

Finally, there is no need to disassemble and assemble.

In one night, sometimes it can be disassembled three or four hundred times.

Even so, Xu Dajun decided to do it after half a month of research.

It is estimated that at this time, Big Brother has not developed the RD-120.

Sorry, we're getting there first.

the next day.

Xu Dajun, who was idle some time ago, suddenly became busy.

"Academician Song, can we replace the fuel with kerosene?" Xu Dajun asked.

To ask why kerosene is used.

Because kerosene is convenient to store.

With the same volume of kerosene and dimethylhydrazine, kerosene is obviously more advantageous.

Longer battery life and greater thrust.

A certain superpower later eliminated the liquid oxygen and dimethylhydrazine model and replaced it with the liquid oxygen and liquid hydrogen model.

It can be seen from here that dimethylhydrazine is the most fuel and has obvious deficiencies.