I really don't want to lie down and win

"what?"

"I...I'll forget it." Xu Mang smiled awkwardly: "I have a bad reputation internationally."

words fell,

Xu Mang hung up the phone.

Just about to open the door to enter, I received another call, still from a number I didn't know, and the place of belonging was still the capital.

"Hey?"

"Is it Professor Xu?"

"I'm the head of Labor Benchmarking and I..."

at this time,

It wasn't until Xu Mang realized that a photo completely blew up the calm lake.

I don't know when,

Only then did Xu Mang resolve the endless phone calls, and went back to the private room to talk to everyone present, only to realize that it would be the end of the new year in a few months, and it was time to get busy.

"Professor Xu."

"Actually, you are fully qualified for these titles. If you are not qualified, it will be difficult to find a second person in the whole country." Hu Feng said with a smile: "If you have time, go and participate."

"Forget it..."

"There are too many titles, I don't care at all, and I don't have much time." Xu Mang shook his head, and said seriously: "I... have a lot of projects on hand now, what are the specific projects, because I signed a non-disclosure agreement, I can't I'm sorry to disclose it to you."

"it's okay no problem!"

"Those who can work there can basically guess what they do, but they don't know the specifics." Hu Feng said seriously: "But...according to past experience, Professor Xu...may have to stay for a while. , even if it’s Chinese New Year, it’s only three or four days off.”

Faced with this situation,

Xu Mang already knew the result in advance. All he could do was to finish these projects as much as possible before the new year, especially the space agency's Mars landing plan.

after the end,

Xu Mang returned to his work place and began his endless road of improving his skills. He has already completed two-thirds of the content. As long as he has reached the level of understanding, he can start the cheating mode and directly fix the hot parts of the missile engine. .

After all, material science is already proficient, and according to the minimum standards, it is enough to understand propulsion technology and aerodynamics.

three days left!

There are almost three days left!

...

time flies,

Soon three days passed like this,

Xu Mang had just arrived at the office. Looking at the messy desk in front of him, he hurriedly made a space where he could work. Today...he was going to formally solve the problem of heat-bearing materials.

how long?

Well...

One morning!

......

697章 别管他，放养就对了！（3/3，月票加更8/78）

The thermal protection of the scramjet engine is one of the most important key technologies. For ordinary engines, it puts forward new requirements on the protective materials. The temperature of the hot air flow in the engine flow channel reaches 720 K, which is almost [-] degrees, and the temperature of the combustion chamber even reached [-]K.

If only the temperature needs to be solved, Xu Mang won't be allowed to come over. The complex laser wave system, combustion pulsation and vibration in the scram engine can easily prevent the combustion chamber from generating too high a temperature, thus causing damage to the entire combustion chamber.

Judging from the information Director Guo gave Xu Mang, he had also considered using a cooling structure to reduce the temperature, but it would increase the weight and reduce the performance of the engine. Moreover, the special structure of the scramjet engine makes it impossible to apply the cooling mode, which is also very difficult. Difficult to apply on a large scale.

The simplest thing is to change the structure, or improve the performance of thermal protection materials. The team led by Director Guo chose the second direction to improve the performance of materials.

Owing to time constraints,

In addition, Xu Mang's own propulsion technology and aviation power skills are not enough, so he can only make selective breakthroughs, and some technologies need to be solved by himself.

First of all,

Xu Mang put forward six problems that need to be solved, heat resistance of materials, oxidation resistance, thermomechanical load bearing, corrosion resistance, technical preparation index, and the lightweight of the latter item on the left. The six indexes represent six problem.

"Damn..."

"I made a mistake and overestimated myself." Xu Mang scratched his hair, blushing at the oath he had just made. What's the difference between this and Taibai Mao owed a hundred chapters and said he could pay it off in a year, but now he didn't say a word. ?

"Shame!"

"I'm really blushing for myself!" Xu Mang sighed. According to his own calculations, the skill value is actually just right, it's just a matter of spending a little more time, but he forgot that the skill value will be deducted when using the beast mode.

right now,

I can only write slowly at the speed of the tortoise, starting from the antioxidant properties...

For antioxidant,

Xu Mang has a wealth of knowledge. According to the characteristics of the scramjet engine, it needs to absorb oxygen from the atmosphere for oxygen-enriched combustion. The high-speed airflow will also produce atomic oxygen because of the shock wave, which directly leads to more serious oxidation.

In terms of thermomechanical loads, due to the uneven distribution of heat flow on the runners, thermal stress is generated. If the airflow speed is fast, noise loads will be generated... Therefore, the material must not be deformed, so as not to affect the performance of the engine.

swish swish,

Xu Mang wrote for more than an hour, and finally wrote down the six questions clearly. At first, he thought there were not many, but now it seems... they are all problems!

"Ugh..."

"I don't want to work hard anymore...or just be a salted fish." Xu Mang slumped on the chair and looked up at the ceiling. In fact, he didn't need to work hard anymore. After marrying a wife who is so good at making money, why should he work hard? Vigorous?

"no!"

"If you die without a dream, isn't life in vain?" Xu Mang washed his brains and started working hard again.

just 5 minutes,

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Keep upgrading!