When you are rich, there is Rheinmetall; when you are poor, there is Rheinsteel!

As Lin Yu gave the order, Jiang Yun immediately turned around to arrange the work related to blowing.

The wind speed of the low-speed wind tunnel is only 0.4-0.7 Mach, but this data is mainly for various aircraft, cars, etc.

If converted into the numbers that humans are used to, it is 136-238 meters per second.

If compared horizontally with the wind in nature, this speed is far ahead.

In nature, the maximum wind speed of a general tropical depression is 10.8-17.1 meters per second, equivalent to wind force 6-7.

For tropical storms, the maximum wind speed is 17.2-24.4 meters per second, equivalent to wind force 8-9.

For strong tropical storms, the maximum wind speed is 24.5-32.6 meters per second, equivalent to wind force 10-11.

For typhoons, the maximum wind speed is equal to or greater than 32.6 meters per second, equivalent to wind force 12.

While Lin Yu was strolling around, Jiang Yun personally drove a truck from a car manufacturing company and, under the guidance of his students, slowly drove the car onto the workbench between the two huge fans on the right.

As soon as the vehicle stopped, more than a dozen people came out of the door next to it, holding tools and began to fix the truck.

For a moment, the sound of electric screwdrivers fixing the trucks rang out, echoing in this huge factory, which was very pleasant.

About half an hour later, Jiang Yun walked down the workbench, repeatedly checked the truck fixing device in front of him, confirmed that there were no missed points, waved his hand, and walked out of the small door on the side with his students back to the control room.

As soon as they entered the room, several students returned to their posts one after another, sat down, and stared at the monitor in front of them.

Jiang Yun came behind Lin Yu, rubbed his hands, and said, "Don't be surprised, Director. At first, I was going to ask Professor Huang Tianhai and Professor Xiang Baichuan for fixed-wing drones and rockets for testing."

"But this plan was rejected by Professor Xiang Baichuan before it was proposed. He said that he could only make his rocket by himself."

"I had no choice but to borrow a car from the car manufacturing company, but it doesn't matter. After blowing up this car, we can make a car with lower wind resistance."

The awkward explanation made Lin Yu roll his eyes.

On the wind tunnel workbench, there was a new truck produced by the car manufacturing company. The shape was no longer the front pointed mouth of the old Jiefang, but a big flat head.

Compared with the previous trucks, after being transformed into this shape, the style is better, the price is a little more expensive, and the sales volume is also a little better than before.

Reducing the wind resistance of this thing...

It's not impossible. After all, many people at this time consider fuel consumption first when buying a car.

It is precisely because of this that Japan's thin-skinned cars were able to beat Ford in America more than ten years ago and become the car sales champion in America at that time.

However, there are gains and losses.

When Japan's industrial capacity was about to threaten America's foundation and Japan was about to buy America with the whole of Tokyo, America gave Japan a big fight.

Let these people wake up from their dreams.

If the truck can be pulled and fuel-efficient, there will be no worries about sales.

After his eyes stayed on the truck for a moment, Lin Yu nodded and whispered: "Start!"

Hearing this, Jiang Yun immediately turned around and shouted to the man sitting by the door:

"Start the alarm!"

The man at the door heard the words and reached out to enter a string of passwords on the display in front of him.

Then, a loud click came from the wind tunnel workshop.

It was not a real mechanical collision, but a sound from the speaker.

Soon, a deep red light flashed in the factory, and along with the light, there was a rapid alarm:

"Warning! Warning!"

"The low-speed wind tunnel test is about to begin. Please leave the wind tunnel test room."

"Warning, please leave the wind tunnel test room and close the doors at all levels."

Under the gaze of everyone, the two fans in the wind tunnel workshop began to rotate. At first, the speed was very slow, and slowly, the speed became faster and faster.

Until finally, an afterimage was formed, and through the fan blades, the situation behind could be clearly seen.

The fan started, although the wind was blowing, the human eye could not catch the wind after all, so Qian Duoduo and others who had been standing next to Lin Yu showed doubtful eyes at this time.

Is this thing really useful?

Sensing their gazes, Lin Yu turned around and said to Jiang Yun: "Turn on the smoke signal."

"Yeah!" Jiang Yun nodded, turned around and tapped the console next to him, and white smoke slowly emerged from the outer shell of the fan in front.

The smoke was very light.

However, under the strong wind blown by the fan, the light smoke was carried by the strong wind and hit the air nozzle on the workbench.

After passing through the air nozzle, the whistling wind took shape, looking like the cables on the suspension bridge that span the river and hold the bridge.

In the middle of the front of the car, the wind bound into a rope by the air nozzle hit the truck fixed on the workbench straight, and the moment it hit the truck, it was like an egg hitting a stone.

It broke into pieces.

And at the edge of the front of the car, when the wind hit the truck shell, it lightly passed by the front of the car and slid to the back of the car.

Finally, the white smoke was absorbed by the fan at the back and hit the last diversion hole intact.

The howling wind collided with the deflector blades inside the deflector tunnel, instantly becoming a mess and completely losing its forward momentum.

This magical scene made Qian Duoduo and Luo Ping say it was magical.

As Lin Yu's secretary and occasional full-time bodyguard, Qian Duoduo and Luo Ping occasionally came into contact with some proprietary vocabulary.

Such as engineering mechanics, construction mechanics, stress, aerodynamics, etc.

Originally, for them, these words were too empty. The most important thing for any aircraft to fly in the sky is air resistance.

There are also cars running on the ground, which spend most of their time overcoming air resistance.

After a piece of steel is processed, it still needs to be placed there to relieve stress.

Is this thing that troublesome?

But now, air resistance has materialized in front of them.

The plumes of smoke hitting the front of the car also made them let go of their brains and imagine with all their strength. If they could convert this force to zero, would that mean that Rheinsteel could build airplanes?

Lin Yu wasn't sure what they were thinking, because at the moment, he was holding a piece of recording paper, squatting in front of a monitor, and transcribing the data on it.

Copying and talking at the same time.

"Lao Jiang, after the wind blows today, give Li Xiangtian the optimized truck front style."

"Let Lao Li adjust the layout of the front of our car according to this shape and let him develop a car that belongs to us."

"Well... forget it, I'll take the time to find him personally about this matter."

After copying the data, Lin Yu used the data in hand and the formula in his mind to start calculations on the piece of paper.

Ten minutes later, a result of the drag coefficient was released.

After taking a casual look, Lin Yu threw the wind resistance coefficient into his pocket, turned around, and shouted to Qian Duoduo:

"You contact Professor Xiang and Professor Miao and ask them to come to the automobile manufacturing company in the evening."

After giving the instructions, he turned around and waved his hand: "Let's go! Eat, let's have an extra meal to reward you!"

"After dinner, everyone takes a few days off to rest."

After receiving the new instructions, Jiang Yun also shouted repeatedly. Then, a group of people followed the operating procedures, closed various control valves, and finally turned off the lights.

After the last procedure was completed, he got up and went out.

After leaving this low-speed wind tunnel workshop, a group of people visited several other wind tunnel workshops.

Different from the low-speed wind tunnel workshop, in these workshops, the staff of the wind tunnel group are still carrying out detailed debugging and maintenance.

After walking around for a while, a group of people headed to the cafeteria to start eating.

Lin Yu didn't drink because he had something to do in the evening. He went back to his residence in the automobile manufacturing company and lay down for a while. There was a knock on the door from outside.

"The door is unlocked, come in!" After shouting, Lin Yu climbed out of bed with difficulty, walked to the water dispenser, poured out the residue in the teapot, and replaced it with new tea leaves.

While the hot water was brewing, the door was pushed open, and Lin Yu could see clearly the people coming, Xiang Baichuan and Miao Yuan.

Both of them were slightly bent over, looking cautious.

After entering the room, he did not move around, but stood there leaning against the door, waiting for Lin Yu's response.

Seeing the two of them looking like this, Lin Yu raised his hand and pointed to the sofa and whispered, "Sit down!"

The teapot is filled with hot water, and the black tea from Guizhou Province is brewed by the hot water. The curly leaves slowly relax. During the relaxation process, the transparent tea water slowly turns brown.

After shaking it, Lin Yu walked up to the two of them with a teapot, poured a cup of hot tea for each of them, and then said:

"I called you two here today. Actually, I have nothing else to do. The main thing is to synchronize two messages."

"First of all, our wind tunnel is completed. From now on, your satellites and rockets can all use the wind tunnel."

"Secondly, the ships at the shipyard have begun construction."

"This ship needs our navigation system and our hypersonic missiles."

"The tasks you two have are very heavy, very heavy."

Lin Yu's tone gradually became more serious, but when these serious words fell into the ears of the two people next to him, they let out a long sigh of relief.

After exhaling, Xiang Baichuan smiled awkwardly and said, "Secretary Qian came to see us. I thought something big had happened."

"Factory director, don't worry. I swear to Baichuan and God that I will complete the task."

As soon as he finished speaking, Miao Yuan clasped his hands and said immediately:

"Me too!"

Miao Yuan's actions completely made the two people next to him laugh. Lin Yu shook his head helplessly and carried the teapot to refill the water for the two of them:

"It's good to be motivated, but you shouldn't be too impatient. By the way, tell me, is there anything you can help with during the research process?"

"Just say it casually, we can solve it together."

As soon as he finished speaking, Xiang Baichuan immediately raised his hand and said loudly: "Yes!"

"There are too few girls in the institute. Most of these young people who work in the institute doing research every day have no partners!"

Hearing this unexpected difficulty, Lin Yu subconsciously turned his gaze to Miao Yuan. Their eyes met, and Miao Yuan nodded lightly and acknowledged the matter.

This time, he became Lin Yu's numb claw.

Without him, he doesn’t have such a thing as an object.

In the previous life, there was none.

Picking the stubble on his chin with his hand, he decided to leave the matter to Wang Jianguo.

Management construction, population construction is also construction.

After agreeing, the three of them started talking nonsense.

In fact, it was mainly because the other two people listened to Lin Yu's bragging.

…………

A new day, early in the morning, Xiang Baichuan pulled all the people in the rocket research and development center to the square in front of the office building.

Standing on the high platform, he waved his hand to the people below:

"Everyone, today, here, I want to tell you a good news, that is, the wind tunnel that our rocket developers have been thinking about has been built!"

"From low speed to hypersonic speed, there are all kinds of hot shock wind tunnels, everything is available."

"So, from now on, we will adjust our work."

"Except for the comrades in charge of production, everyone else, pack your luggage, take our rockets, and live in the wind tunnel center next door."

"Pull out the rocket configuration we have made and the missile configuration envisioned in the future."

"Blow!"

"Blow as hard as you can, blow to death!"

"As long as it doesn't blow to death, blow to death!"

"Let's go!"

After shouting loudly, Xiang Baichuan waved his hand in the direction of the center of the wind tunnel, and the hundreds of people in front of him, who were neatly arranged, waved their left and right hands in a fixed rhythm and ran towards the center of the wind tunnel in small steps.

It looks like they are going to attack the city.

Behind this team is the car responsible for transporting rocket and missile models.

Before obtaining complete data, the model is the best choice.

"The hot shock wind tunnel test of the Tianwen rocket has begun. The test wind speed is 7 Mach, and the simulated friction temperature is 1000 degrees Celsius. The test begins."

"Data collection begins!"

"The strong wind passes normally, and there is no disturbed turbulence on the rocket shell... Attention, everyone, there is turbulence in the No. 8 section of the fairing, and the aerodynamic shape of the shell here needs to be adjusted."

"The location of the area has been recorded, please pay attention to observation."

"Report on the situation of the temperature sensor inside the rocket."

"Temperature sensor No. 1 shows that the internal temperature of the top of the rocket is 243 degrees Celsius."

"Report on the temperature of temperature sensor No. 2."

"The temperature of temperature sensor No. 2 is 87 degrees Celsius, and the thickness of the glass fiber insulation material between sensor No. 2 and sensor No. 1 is 5 cm, and the temperature has dropped significantly."

"Don't worry, it's just the beginning, wait a while and increase the wind speed, adjust the wind speed 9 Mach."

"The wind speed has been adjusted to 9 Mach, please pay attention to observe the relevant data."

"Use infrared detectors to detect the temperature of the top shell of the rocket, and pay attention to whether there is ablation at the top of the rocket. If ablation occurs, pay close attention to the thermal insulation tiles!"

"Report, paint is peeling off at the top of the rocket, and ablation is occurring."

"Where are the thermal insulation tiles?"

"The thermal insulation tiles are all normal, and there is no shedding. The temperature of sensor No. 1 has risen to 287 degrees Celsius, and the temperature of sensor No. 2 has risen to 113 degrees Celsius."

"Keep going, everyone, let's blow our rockets for a little longer, so that our future rocket launches can be faster."

"You keep an eye on it here, I'll go next door to see their hypersonic missiles."

After giving instructions to the people below, Xiang Baichuan suppressed his excitement, opened the door, and walked to the shock wave wind tunnel next door.