Scholars in the courtyard.

Chapter 2157 Beautiful Mach Ring
When the time was right, Yang Xiaotao began to assemble the stamping machine!

Two hours later, Shi Hanzi brought over the welded gas chamber, and Yang Xiaotao took it over and installed it.

Three hours later, the sky outside was still gloomy and there was no sign of dawn.

After three and a half hours, Yang Xiaotao stood up, took off his glasses, and then looked at the stamping machine in front of him, which was almost as big as Wangcai's. He said to the people waiting on the side, "It's done!"

Boom…

As he was speaking, thunder was heard outside.

Through the window, you can even see a flash of lightning.

"It's done!"

Yang Xiaotao's voice was drowned out by the rumbling thunder, but it left a deep impression on the people around him.

Chen and his companions rubbed their eyes, feeling sleepy but unable to stop moving forward.

"Is this it?"

Looking at the small stamping machine in front of him, Mr. Chen was a little skeptical.

He had seen many engines, even aircraft engines manufactured by machinery factories.

But what we have in front of us is not even as good as the engine used in armored vehicles.

It's hard to believe no matter how I look at it.

"Yes, that's it!"

Yang Xiaotao didn't look sleepy at all and spoke seriously.

Mr. Qian and Mr. Wang had already started arranging manpower and immediately sent the stamping machine back to prepare for the experiment.

"Whether it works or not, let's test it first!"

The old man had a tired look on his face, but his eyes were very shrewd.

"We'll arrange it right away!"

After Mr. Wang said this, Yang Xiaotao made a gesture to Liang Zuo, who immediately brought people over to prepare for loading the truck.

The entire stamping machine weighs only four or five hundred pounds. Seven or eight people came up and used various tools to easily lift the engine onto the armored vehicle.

"Let everyone have a good rest, and leave the rest to us."

Old Qian saw that Yang Xiaotao was about to get in the car and tried to persuade him.

Elder Wang also nodded and said, "Take a rest. We are tired just by watching. Don't worry, I will definitely call you if there is good news."

After hearing this, Yang Xiaotao no longer insisted. His condition was really not very good these past two days. His body was like a bowstring, always tense.

"Okay, I'll go home and sleep."

"You must tell me if there is anything."

Elder Chen stepped forward and patted Yang Xiaotao on the shoulder. "Don't worry, I will tell you if I succeed."

The old man also came over and said, "Go back and have some sleep. Being young is no excuse. You still need to rest when it's time."

After that, he looked at the workers present and said, "Everyone go back and take a rest. I have approved this leave on behalf of your factory manager today."

Yang Youning, who was standing by, quickly came forward and said, "Comrades, the commander has already said it. Why are you still standing there? Thank the commander."

Everyone applauded immediately after hearing this, but the old man raised his hands in vain and said, "Go back and have a good sleep, and take care of yourself."

“I want to thank everyone.”

As the old man spoke, he left the workshop under the escort of Tong Xiaolong, and then got into the car and left the machinery factory under the gaze of everyone.

He knew that if he didn't leave first, no one else would leave.

After the old man left, Mr. Chen also wanted to leave.

Now they just have to wait for the results.

The stage has been set up at the machinery factory, and it all depends on whether the Seventh Ministry of Machine Building can perform well.

Then Mr. Huang also left, followed by Mr. Zhang and Mr. Qin.

Finally, Mr. Wang asked the security department of the machinery factory for help and sent Ran's father and others back to the Seventh Ministry of Machine Building.

After everyone left, Yang Xiaotao turned around and looked at Liu Huaimin and Yang Youning behind him.

"Lao Liu, Lao Yang, I'm going back first. I'm sleepy!"

Yang Youning nodded, "Go ahead, I'll ask Xiao Wang to take you back. No, I'll go back and catch up on some sleep too."

Yang Xiaotao covered his mouth and yawned, then picked up the bamboo hat beside him and left the workshop.

Behind him, Liu Daming and others also found hats and raincoats and went home.

"I have to go back, too."

Liu Huaimin yawned, "It's no use staying here in this state."

"What will happen to the factory if the three of you leave?"

Chen Gong walked over yawning. His previous excitement had passed and he was now feeling sleepy.

"We still have Lao Wang, let him take over for a day."

As Yang Youning spoke, Chen Gong's eyes rolled and he nodded immediately, "I'm a little sleepy too. Let's go, let's go eat first and then go home."

On the other side, Father Ran was yawning in the armored vehicle, holding the blueprint tightly in his hand, looking outside through the observation hole. In the gloomy sky, lightning appeared from time to time, and then the sound was heard after a while.

"Light travels faster than sound, so you see the lightning first, then you hear the sound."

"Based on the time difference between the two, and the fact that the speed of sound in the air is 340 meters per second, we can calculate how far away that place is from us."

Father Ran used his knowledge to refresh himself so that he wouldn't fall asleep.

In the car, the other people were using their own methods to refresh themselves. They had already gained something in the machinery factory, and the next step was their work.

When the car stopped again, there was no more thunder or rain outside.

crunch
The car door opened, and Ran's father walked out, then saw the people waiting nearby.

On another armored vehicle, a group of people were lifting a stamping press, and the experimental site was not far away.

"Director Ran, I leave this to you."

Old Qian came up to explain, and Ran's father nodded, "Don't worry, Chief, we will test it out as soon as possible."

"Okay, I'll take people to continue the design. Our Seventh Machinery Department must not let us down this time."

"clear."

The crowd split into two groups, each busy with their own things.

"Captain, what are we doing?"

Both Mr. Qian and Mr. Wang took people to help, and as a result, Liang Zuoxin and others were left alone.

"Forget it, let's go back."

"Go back? What about this engine?"

"Just leave it there. If we can make one, we can make two."

After Liang Zuoxin finished speaking, he got into the car and left.

Yang Xiaotao returned to the courtyard, opened the door and entered the house, just when Ran Qiuye got up.

Seeing Yang Xiaotao like this, he hurried forward to help him get water to wash.

Yang Xiaotao indicated that he was fine, just very sleepy, and then went into the house to sleep.

Ran Qiuye sent the child to the nursery and prepared to go to the village. However, she was worried about Yang Xiaotao, so she went back home to check on him.

Then he heard snoring coming from the room. When Yang Xiaotao woke up again, it was still bright outside.

But there is no rain, so it must have stopped.

When I got up, I heard the noise of children in the room. Then I saw Miaomiao quietly push open the door and stick out her little head to look inside.

There were two little mushroom heads below, and three pairs of eyes were looking at Yang Xiaotao at the same time.

"Dad, you're awake."

Rongrong shouted in surprise, and when she raised her head, she bumped her two older sisters backwards, and then the third child cried out in pain.

Yang Xiaotao quickly stood up and walked over and picked up the three little guys.

Only then did I feel that my body was like rusty and couldn't move.

"Dad, you slept for so long, Mom didn't let me wake you up."

Rongrong complained in a low voice, and then saw Ran Qiuye come over and bury her head in Yang Xiaotao's back.

"I got up. I almost asked for help to take him to the hospital."

Ran Qiuye came up with a glass of water, then glared at the little ones who were complaining, and the three of them ran out in a flash.

Yang Xiaotao took the water cup and drank a sip, then shook his head and asked, "How long have I slept?"

"I came back yesterday morning, one day and one night."

"So long?"

"No."

Yang Xiaotao finished drinking the water, and then looked at Ran Qiuye, "I slept for such a long time, is everything ok?"

Ran Qiuye's eyes turned red, "What do you think?"

"Besides scaring me, what else?"

Hearing this, Yang Xiaotao was moved. He put down the cup and hugged the person next to him.

"This time is special, don't worry, I promise, it won't happen again."

"Who asked you to promise?"

Ran Qiuye was held tightly by Yang Xiaotao and leaned on his chest.

"I'm not against you working, but you have to take care of your body."

"If you were gone from this family, what would the four of us do in the future?"

Yang Xiaotao listened quietly and just hugged Ran Qiuye tighter.

After breakfast, Yang Xiaotao did not go to the machinery factory.

Anyway, what needs to be done has been done, and today happens to be the weekend, so Yang Xiaotao plans to spend time with his family.

As the saying goes, every spring rain brings warmth. After the rain, the sky clears up and the sun seems like a different person. It takes off its winter clothes and emits a scorching light.

The family learned from the sun and took off their heavy cotton coats and put on dry outer coats. Then they rode two bicycles, followed by two dogs, out of the courtyard and arrived at the West Sea.

There are a lot of people traveling around, and there are groups of people every few days. It is very lively when the family is together.

Yang Xiaotao found a place under a big tree, put down the fruits and pastries he had brought, then took out the prepared kite and led the children to an open space.

In those days when food and clothing were scarce, Yang Xiaotao naturally did not use cloth to make kites, but instead used newspapers and bamboo to make them.

Of course, the one who contributed the most here is Xiaowei.

Yang Xiaotao made two such kites in total. Although the newspapers were made of different colors and did not look very good, it was good enough that they could fly.

With the help of the east wind, two swallow-shaped kites were released into the sky.

Duanwu and Miaomiao each pulled one child, and the two little ones clapped their hands and chased after them, shouting and holding their heads high, not afraid of the pain in their necks.

"Look, our house is the only one with a kite around here."

Yang Xiaotao couldn't help feeling proud when he saw a group of children surrounding Duanwu and the others.

Ran Qiuye was cutting fruit with a knife. When she heard her man showing off, she hurriedly nodded to express that she was proud of it.

"Watch out, kids. I'm going fishing. We'll have fish tonight."

Yang Xiaotao said something to Ran Qiuye, then picked up the fishing rod and walked towards the water.

While Yang Xiaotao was taking his family to relax in Xihai, the final experiment of the turbojet ramjet was about to be carried out in the Seventh Ministry of Machine Building.

Father Ran's eyes were red. He hadn't slept for two days and two nights. The fatigue on his face was visible to the naked eye.

The other people around were not much better.

Except for Comrade Lao Wang who couldn't hold on and slept for half the afternoon, everyone else hardly slept a wink.

"Old Qian, go get some sleep. I'll watch over here."

When Mr. Wang saw that Mr. Qian was drinking water to refresh himself, he came over to persuade him.

But Mr. Qian shook his head, "No need. It will be assembled soon. It's the last step. Whether it will succeed depends on this."

After hearing this, Mr. Wang said no more. He knew the other party's character, and no one could stop him once he made up his mind.

"Logically, if the ramjet engine is fine, we won't have any problems."

"Right, Old Ran."

Mr. Qian seemed to be talking to himself, but also seemed to be talking to Mr. Ran who was standing beside him.

Father Ran hummed, his lips were a little dry, but a flash of joy appeared on his face.

The turbojet stamping press designed by Yang Xiaotao has undergone various tests and its performance has met the requirements for use.

Now comes the most important part, testing speed.

While I was thinking, everything was ready.

"start."

Following Mr. Qian's order, the staff not far away immediately started to pull the switch and start the test.

Everyone looked nervously through the cover towards the back of the engine.

Slowly, slowly, suddenly someone covered his mouth, not daring to make a sound, but unable to hold it back.

Father Ran rubbed his eyes and looked at the pillar of fire rising from the darkness in front of him. There seemed to be many triangles hidden in the pillar of fire, and then the color began to change.

He knew that this was the Mach loop.

Mach loops only appear when the speed exceeds the speed of sound.

He knew that the appearance of this thing meant that the engine had reached the supersonic requirements.

The old man at the side has already started counting, one, two, three.
Mr. Qian also knew that the number of Mach rings could not directly represent the thrust of the engine, but under the same circumstances, the more Mach rings there were, the greater the thrust would definitely be.

Mr. Wang, who was farther away, was still watching the colorful changes. He felt like shouting but didn't dare to.

So beautiful, so beautiful.

Yeah~~~
Suddenly, someone couldn't hold back and broke this rare peace.

Then, loud shouts filled the entire experimental area.

The people nearby hugged each other, jumping and dancing together.

"Success."

Father Ran looked at Mr. Qian, with a thousand words to say and tears in his eyes, just for these three words.

Elder Wang came up to them and hugged them tightly, "Yes, we succeeded."

"It's my treat. Let's drink. Tonight, you must not leave until you are drunk!"