"Yes." Chen Hongbing ordered at this point, "The launch failed. All engines were turned off in an emergency to allow the rocket body to fall into the closer sea. Urgently contact the Oceanographic Bureau and Meteorological Bureau. Do your best to salvage it."

At this moment, everyone seemed to be distracted.

The baby didn't survive.

The old man couldn't hold on either.

Before Chen Hongbing stood up, he held the back of Shen Tinglan's hand and shook it heavily.

"I can't stand it. There are many people who can replace me."

"But no one can replace you."

"Don't resign, don't run away."

"I agree."

…

In the car, Shen Tinglan's eyes turned wet red.

Even though so long had passed, that night was still enough to cause her a lifetime of heavy pain.

"Well..." Lin Yujing gently put her hand on her mother's arm, "Thank you for your hard work... Mom."

This was the first time in a long time that Shen Tinglan told her what happened that night.

Although Li Zheng is also sad, this does not affect his basic analysis.

"It took about 30 seconds from the onset of the warning sign to complete shutdown. Although the process was very fast, it was still a linear process."

"No changes can be seen in the appearance, and there is no explosion. It can be seen that there is no fuel leakage, the combustion chamber is not damaged, and there is no early contact in the pre-combustion chamber. This eliminates many faults."

"Under this premise, if the thrust continues to decrease...then there can only be a problem with the fuel injection." Li Zheng nodded and said, "Well, this is consistent with the parameters given by the algorithm."

"Your time in the test team is indeed not in vain." Shen Tinglan wiped his eyes and gradually returned to a calm mood, "In the design of 86, liquid hydrogen and liquid oxygen are stored separately, and they are stored separately. When the turbine pump and the oxygen turbine pump are injected into the combustion chamber, my first reaction is that there is a problem with one of the pumps. From experience, the oxygen pump is more likely to have problems because it is born to withstand a strong oxidizing environment. This is It is also the basis for our first fault model.”

"But... I haven't had this kind of problem in all the ground testing for so long." Lin Yujing said reluctantly, "And doesn't the core have two engines? Under the same environment, doesn't the other one work just fine? of."

"If the Ocean Administration can salvage Huang Er, your questions will probably be answered." Shen Tinglan sighed, "But now, we have answered it based on simulation. The force and heat of the rocket after takeoff is extremely complicated, and there are still many problems. There is a vibration problem that gives everyone a headache. It is impossible for our test run to simulate all environments, so we can only explain that about 180 seconds after liftoff, the thermal environment of the rocket engine reached a test level The harsh conditions that cannot be simulated cause abnormalities in the local structure of the turbine device, making it impossible to inject fuel into the combustion chamber."

"That's all we can do..." Li Zheng also lowered his head and sighed, "It would be great to salvage it... You'll know it once it's dismantled... But it's really difficult to locate it... Even if it's correct, you don't know where it will be swept away by the waves. "

"Perhaps Mingri sneaked away first." Lin Yujing shouted again, "Bad!"

"Okay, stop with the conspiracy theories." Shen Tinglan turned around and drove back to the first hospital. "The diagnosis that you two and Eleven gave us is indispensable for the smooth reset. Based on the test results, we The fault point has been locked on the oxygen turbine pump. Under a special environment, the shaft system will indeed crack or even break. As you know, in pursuit of greater thrust and specific impulse, the pressure in the combustion chamber is The pressure is over a hundred atmospheres. To inject fuel into it, the turbine speed and the pressure of the pre-combustion chamber must be greater. In addition, the low temperature environment and strong oxidation properties make this turbine pump one of the most difficult points in aerospace engineering. difficulty."

At this point, Shen Tinglan stopped the car, turned sideways and said seriously.

"If aerospace engineering is a test paper used to test a country's cutting-edge industrial strength, then this pump is the final question of the paper."

"Hmm!" Lin Yujing became more and more excited as she listened, "The heaviest jewel in the aerospace crown!"

Li Zheng, however, punched Lin Yujing's armchair with great reluctance: "So in the end, is it actually a process issue...or is it a materials issue?"

"No, no, no, blindly complaining about technology and materials is the biggest misunderstanding of engineering." Shen Tinglan was not in a hurry to get off the car, and explained on the spot, "Engineering is a whole, and our job is to work under the existing technology and conditions. , use our knowledge and brains to design a rocket that can successfully lift off. When facing failure, don’t put all the responsibility on the process and materials. They have been strictly tested when they leave the factory and meet our engineering standards. Of course, in breakthrough projects, we still have the right to demand more advanced technology and better materials, but don’t put all the blame on them. After all, there is no indestructible steel plate in the world. Even if there is, we should use it. I'm sorry."

"Ah..." Li Zheng sighed after thinking, "I am narrow-minded... Teacher Shen is right, the cook should not complain about the ingredients."

"Cook..." Shen Tinglan was stunned for a moment, and then couldn't help laughing, "It turns out that engineers can be compared to cooks... I also learned something."

"If nothing else, Li Zheng's fried fish steak is delicious." Lin Yujing, perhaps thinking of the delicious food experience, said something nice unexpectedly, "Let him cook it for you later."

"In two days, when the zero reset is completed, I'll treat you to dinner." Shen Tinglan shook the car keys and said, "During this period, the Sixth Institute must work hard to improve the oxygen pump part of the engine. We can't be idle and strive to improve the overall performance." Further optimization of the structure is required to further enhance vibration suppression."

"Shocked?" Li Zheng asked.

"Ah, you haven't learned this yet. Let's go upstairs and teach you." Shen Tinglan stretched and was in a good mood. "The rocket most of the time runs at ultra-high speed and breaks through the air resistance. During this process The vibration generated in the rocket will affect the operation of every component of the rocket. It can be said to be the first enemy of the rocket. One of our design difficulties is to resist vibration and better protect the operating environment of each part. Now we know Why do you want to recruit people who are studying?"

"That's it." Li Zheng followed Shen Tinglan and got out of the car excitedly, "It's too rude to call you teacher, I'll just call you master's wife!"

"Ah..." Shen Tinglan was stunned again, "This..."

"Give me the 'master'!" Chen Hongbing suddenly appeared in a swaggering manner, "How many times have I told you to just call me mom? Why are you being so polite here?"

This time Shen Tinglan was used to it and did not run away: "Go, leave us alone."

"No, no, no, no, you have to come." Chen Hongbing waved his hand, "We have a summary meeting with the Sixth Academy, so you have to come."

"Yes." Shen Tinglan responded and handed the office key to Lin Yujing, "Go to my office first and quietly give Li Zheng the recent study materials. Study hard and don't fight."

"oh."

"yes."

After the two left, Chen Hongbing sneered: "Why are you acting like a summer day care class...don't fight? Gan Chai Lihuo is in your office, is that a fight?"

"Ah." Shen Tinglan also covered her mouth and quickly took out her mobile phone, "Those who have monitors... I have to tell them..."

"Oh, let's go." Chen Hongbing waved his hand and whispered in Shen Tinglan's ear, "Aren't you curious about what they are doing together? Don't worry, I will take care of this matter. I will accompany you to watch the surveillance later. .”

"!" Shen Tinglan was startled at first, and then backed away, "You don't often watch my office surveillance, do you?"

"I'm free!" Chen Hongbing cursed and waved his hands, "Besides, it's really supervision work."

"It's too scary. I will be transferred when the Huang Er project is over..."
Chapter completed!