Chapter 189: You Won’t Learn a Lesson Until You Hit the Wall

After a while, Su Xihua brought Hong Huan over, and Ma Tian also asked Tianji to list the steps to solve the controversial issue on the screen in the conference room.

"Sit down first." Seeing the two people coming, Ma Tian also motioned for them to sit down first, then paused, organized his words, and then said:

"I believe you all know the design concept of Baidi vertical takeoff. Now you are arguing about whether the engine design of the two jets on the belly should be in the form of turbine or turbofan.

In my opinion, it is better to stick to the improved form of turbine!"

Ma Tian supported the view of his own side. Although the turbofan is more suitable for low-speed operation, its instantaneous jet speed is too small, and the thrust stability generated is not enough.

As soon as Ma Tian said this, Hong Huan naturally disagreed. He raised his own doubts: "The turbojet speed is too fast and the performance is low. If one is not controlled well during vertical landing, it will be over."

"Why do you think we can't control it well?" Ma Tian retorted.

"No, this control is inherently uncontrollable. Under the huge energy of the turbojet, the turbine duct structure is extremely easy to deform. You can't change an engine every time you take off, right?" Hong Huan insisted on his opinion.

In his opinion, Tianyu Xinghai was inexperienced and did not consider the deformation of the pipe material caused by the high-temperature gas ejected in the case of turbojet.

"Look at the formula I calculated on the screen. In my opinion, the deformation of the pipe caused by temperature is within the deviation range!"

Ma Tian gestured to Hong Huan to look at the calculation formula on the screen. In his calculation, the effect of the high-temperature gas ejected by the turbine on the deformation of the pipe is almost the same as that of the turbofan.

In other words, no matter whether it is a turbofan or a turbine, the final result does not affect the control. On the contrary, in vertical stability, the huge thrust brought by the turbine in a short time is needed.

Hong Huan looked at the formula on the screen and calculated:

y*（w*Tcomp）= m_dot*(h4-h1)

INe = Te - Ti

……

w is the speed of the compressor, Tcomp is the torque of the compressor, m_dot is the air flow, h4 is……

A lot of formulas and data were marked on the screen. Hong Huan scratched his head and said, "Mr. Ma, let me copy a copy and wait for me to calculate it."

There were so many formulas and data that he became more and more confused. With a rigorous attitude, he thought it would be better to copy them down and understand them step by step at his own workstation.

Ma Tian nodded and said, "Tianji will send this to your email later, and you can see it on your computer at your workstation!"

Ma Tian didn't think Hong Huan was slowing down the progress. Engineers who could calculate his formulas by themselves were worthy of praise.

Watching Hong Huan leave, Ma Tian continued to talk to Su Xihua about R&D:

"I have basically solved 11 major problems. How many tasks and bugs do you have left now?"

"There are 258 tasks and 85 bugs left." Su Xihua replied.

"There are still so many?" Ma Tian was stunned. This efficiency is too slow. He has solved more than 40 problems in these 5 days.

Su Xihua didn't dare to speak. Compared with the problems solved by Ma Tian, ​​they are indeed far behind. It can be seen when developing the T-X1 multi-purpose vehicle and the terrifying hell robot dog.

It was basically Ma Tian who solved the problems quickly. At that time, their more than 60 engineers combined were only half as fast as Ma Tian, ​​and they solved relatively simple problems.

Ma Tian sighed and waved his hand: "You go down and get busy."

After all, he was too impatient. He always thought that "Baidi" could be developed in a month or so. In reality, it was not that fast. This was still the early stage. There were a lot of problems to be solved in the later experimental simulations.

"Hey, take your time, enjoy yourself!"

Over there, Hong Huan also returned to his workstation and began to watch Ma Tian's calculation process.

As an engineer who can be responsible for engine development in the research institute, he is naturally good at it. Mathematics and physics are his strengths.

However, he soon scratched his head in his seat, and the pen in his hand was also frantically deducing on the draft paper.

Halfway through the deduction, he tore it up and started deducing again.

"What's wrong with you, Hong Huan?" Tang Shiyu, who was sitting at the workstation next to him, saw Hong Huan's painful look and asked.

"It's okay, I just understand the deduction formula." Hong Huan replied simply, temporarily raising his head from the complex formula.

The formula calculated by Ma Tian was too complicated, and some steps were simply omitted by Ma Tian, ​​who thought they were simple and passed them over. After all, it was a draft and analysis process he wrote casually, so Ma Tian naturally wouldn't be too detailed.

This made Hong Huan suffer. He didn't know how many brain cells he had killed. He often saw a formula and had to speculate why Ma Tian calculated it this way.

These formulas have more than a dozen variables, which shows how difficult it is for him to deduce.

This is why some mathematicians are crazy, because those formulas are so damn complicated. Not to mention giving them to college students, even if they copy them to some mathematics doctoral students, they have to spend a long time to understand why the formula is like this.

Hong Huan was tortured for an entire afternoon and only deduced 7 or 8 formulas, and there are at least 20 more of these formulas.

In order not to affect the progress, Hong Huan had to work overtime. He had to understand Ma Tian's thinking to point out and prove that Ma Tian was wrong, and the fighter's belly engine should be in the form of a turbofan.

After dinner, Hong Huan gently told Leng Fangguo: "Mr. Leng, I have some R&D progress to catch up, so I'll work overtime today!"

"Okay, thank you for your hard work!" Leng Fangguo patted Hong Huan on the shoulder, expressing his satisfaction at seeing his people working hard.

Su Xihua, who was accompanying him, couldn't help but grin and chuckle.

It's so damn like him in the past. When he first came, he was also full of vigor and thought that Ma Tian might make mistakes, and sometimes argued with Ma Tian.

Then he was shown off by Ma Tian. He looked at the mathematical and physical analysis formulas that Ma Tian had worked out for several days, and finally found that Ma Tian was right.

After experiencing it three times, he never questioned Ma Tian's opinion again, because in the end, things proved that Ma Tian was right, and he was just thinking about it.

This time, Su Xihua also knew that Hong Huan would probably waste a few days, but he didn't stop him.

Some people don't know the lessons of experience until they hit the wall once. Similarly, if Hong Huan and others don't experience Ma Tian's level, they will also be dissatisfied with Ma Tian's conclusions sometimes.

Perhaps, he may have to hit the wall a few more times!

Ma Tian, ​​the person involved, also returned to his laboratory soon and watched Tianji list more than 200 unresolved tasks and bugs of Su Xihua and others.

Ma Tian thought about it and waved his hand to signal Tianji to turn it off. As he watched, he might start to solve it himself.

Just like a person with obsessive-compulsive disorder, he would click it off even if he saw a red dot on QQ. Similarly, when Ma Tian saw these unresolved tasks, he might start to solve them again.

Out of sight, out of mind, Ma Tian left the office directly and went back to the villa for dinner.

The next day after get off work at 5 o'clock!