Wang Donglai didn't know what many experts were thinking, but after walking up and seeing the doubts in everyone's eyes and the trace of contempt in their expressions, Wang Donglai understood immediately.
Not paying attention to this, Wang Donglai looked at everyone calmly and began to make introductions.
This rocket engine was designed by Wang Donglai from beginning to end. He is also the person who knows this rocket engine best in the world.
So, the introduction is naturally extremely simple.
“Everyone sitting here is an expert, so I will give you a brief introduction.”
"I chose liquid oxygen methane as the fuel for this rocket engine, and used a full-flow staged combustion method to propel it..."
"During the design, I made a model prediction that the rocket The thrust can theoretically reach 500 tons, and the specific impulse can reach the first-class level..."
"One thing is very interesting Importantly, this rocket engine was designed by me based on the needs of Galaxy Technology Space Rocket Company. It needs to be low-cost, reusable, etc., so to a certain extent, some improvements have been made..."
< br>Wang Donglai faced many experts without any stage fright and explained his plan calmly and confidently.
While Wang Donglai was talking above, many experts below also started to be careless and gradually became serious.
Because they could hear that Wang Donglai was not talking nonsense.
At least when explaining this rocket engine, there were no logical errors.
Theoretically, it is a completely reasonable design plan.
However, a new rocket engine cannot be decided so easily.
After Wang Donglai finished explaining, someone immediately asked questions.
"Academician Wang, this rocket engine uses a full-flow staged combustion scheme, so there is a problem. The main combustion chamber and the turbine pump must be integrated. This leaves a lot of room for designers to move around. small, the rocket engine must be placed in a limited space The performance is squeezed to the limit. "
"In this way, if there is a problem with the rocket engine, there is also very little room for repair. How to solve this problem? "
A person sitting in front? , the middle-aged man wearing black-rimmed glasses was the first to ask.
The expert review meeting was originally designed to allow the invited experts to review Wang Donglai’s design plan, raise questions, and let Wang Donglai answer them.
Wang Donglai knew that such a thing would happen before he came, so he was not surprised or angry.
Instead, he said extremely calmly: "Who are you?"
The middle-aged man with black-rimmed glasses was slightly startled, and then said his name and work unit: "I am Xue from the Bureau of Science and Industry. Wei."
Wang Donglai nodded and said: "It's Professor Xue, I have read your article "On the Development Prospects of Hydrogen Energy in Space Rockets"
Before a smile appeared on Xue Wei's face, Wang Donglai continued: "I don't know if Professor Xue is deliberately letting off steam, so he asked such a question."
"A qualified rocket engine, If you don’t start from its design, but only think about the maintenance space, from my personal point of view, it can basically be judged that this is a failed product. ”
"Going back to the rocket engine I designed, what Professor Xue pointed out is indeed a problem, but in my opinion, this point is not important at all."
"Because the premise of this problem exists There will be problems with the rocket engine and it needs to be repaired.”
“For this point, my design concept is very simple. That is to avoid this directly at the beginning of the design."
"If there is no problem with the rocket engine, then there is no need for maintenance."
"Take a step back and leave it for maintenance. The space is small, so why not change the way of maintenance, or specially develop matching maintenance tools. ”
Having said this, Wang Donglai looked at Xue Wei, who had a somewhat ugly face, and said loudly: "Professor Xue, I have no other meaning, I am just discussing the matter."
Xue Wei's face twitched and he remained silent. , obviously angry at Wang Donglai's words.
After hearing Wang Donglai's answer, others realized that Wang Donglai was not a good person.
Although he is young, his edge is not weak at all.
At this time, another expert raised two questions.
"Academician Wang, you just said that you are going to design a rocket engine that will not cause problems during the design process. This is theoretically possible, but in practice it is simply impossible. You How can you be sure that your design will be 100% successful and there will be no problems?”
“ In addition, your rocket engine uses a full-flow staged combustion scheme, so when designing, you must take into account various pipes and heat dissipation of the engine. I did not see this in your design plan. Come."
After these two questions were raised, everyone present looked at Wang Donglai, waiting for his answer.
In fact, rocket engines can be said to be simple or complex.
It’s just that the space rocket has to carry satellites and other things into space, and the requirements are too high, so various functional modules have to be added to ensure efficiency.
A very simple truth, whether it is an industrial product or any other product, will become extremely complex as the requirements increase.
It is simply impossible to design a rocket engine that will not cause problems.
Compared to the first question, the second question is more professional.
On the outer wall of the traditional rocket engine nozzle, there will be a large number of densely packed pipes. The low-temperature coolant will flow through these pipes, taking away a lot of heat and heating itself by the way.
But there are no such things on the rocket engine designed by Wang Donglai.
On the contrary, it is extremely simple and full of design beauty.
This is one of the reasons why people don’t believe much in this engine.
After all, anyone who knows a little bit about the technology knows the importance of heat dissipation pipes.
Faced with these two problems, Wang Donglai behaved calmly and confidently.
“Well, that’s a really good question.”
"The first one is to directly design a rocket engine that will not cause problems. This may sound incredible and impossible at first, but in fact it is not the case. I think as long as the technology reaches a certain level, it can be done. This."
"The principle of rocket engines. In fact, it is very simple. I believe that everyone will not deny this. However, the research and development speed of space rockets cannot be accelerated and the development is slow. One of the big reasons is that the cost of each experiment is too high and is limited by cost. Live.”
“I don’t know if you understand artificial intelligence. Intelligence, to be honest, when designing this rocket engine, I used artificial intelligence technology to assist and calculated it through mathematical models, so I was able to develop such a rocket engine so quickly.”
"As for the heat dissipation pipe, there is actually no problem with my design. , I decided to use a new technology, using 3D metal printing technology to integrate the heat dissipation pipe into the internal cavity to become a highly concentrated cooling pipe.”
Hearing this, Yang Anchao’s eyes moved and he immediately came out. He asked: "3D metal printing?"
Wang Donglai nodded and explained aloud: "I am going to use LPBF technology."
As Wang Donglai expressed his thoughts, most of the people present frowned and began to think.
Whether it is the artificial intelligence-assisted rocket engine design proposed by Wang Donglai just now, or the use of LDBF technology to integrate the heat dissipation duct into the internal cavity, this has broken through the traditional rocket engine design concept.
As the older generation of aerospace experts, they have advanced technical skills, so after a short period of thinking, they found that in theory, Wang Donglai's approach was completely feasible.
After realizing this, many people suddenly became interested in the rocket engine designed by Wang Donglai.
At the same time, my image of Wang Donglai also changed in my mind. "Our country's level in LPBF technology seems to be incapable of achieving this, right?"
At this time, an expert who understands 3D metal printing technology asked aloud .
Wang Donglai immediately replied: "That's right, so our company should start a project to prepare to conquer LPBF technology. If things go well, we should be able to complete the test run of the rocket engine."
Next time , one question after another was thrown by the experts of the expert group.
Wang Donglai did not deliberately hide his clumsiness and responded to the experts' inquiries one by one.
With Wang Donglai’s detailed explanation, experts became more and more familiar with the rocket engine designed by Wang Donglai.
At this time.
An expert in the expert group seemed to have suddenly thought of something. He looked surprised and couldn't help but said loudly: "Academician Wang, have you solved the N-S equation?"
Following The scene fell silent with the voice of this expert.
After a moment of silence, other experts also reacted.
“N-S equation?”
“How is this possible?”
“How is this impossible? I don’t think there is any doubt about Academician Wang’s mathematical talent!”
>
“If the N-S equation is solved, then it is very reasonable to design this rocket engine!”
Everyone was talking about it and everyone had their own opinions.
Just as Yang Anchao reacted when he heard the news, so did everyone.
The solution of the N-S equation is of great significance to both physics and mathematics.
Aerospace, physics, ocean and atmosphere will all be affected.
So, everyone will be surprised.
Among those present, only Yang Anchao and Wang Donglai acted calmly.
Seeing that other people behaved the same as he did before, Yang Anchao couldn't help but feel an inexplicable feeling of relief.
Facing the looks of many experts, Wang Donglai said calmly: "I haven't really solved it, I just have a little idea."
Looking at the crowd, they still want to When the question continued, Wang Donglai added: "I have already submitted my paper to "The Future of Mathematics" will go viral in two days. If you are interested, you can take a look at it then. I am also happy to communicate and discuss with you."
Hearing Wang Donglai's admission, everyone didn't care. Whatever thoughts I had before, I felt a little shocked at this moment.
This is actually true!
A mathematical problem that is about to be born two hundred years ago has finally been proved in the hands of Wang Donglai.
Thinking of Wang Donglai's previous achievements, everyone couldn't help but have a little doubt about Wang Donglai's statement just now.
A little thought, isn’t it Wang Donglai’s humble statement?
Thinking of this, the experts present felt like cats’ claws scratching their hearts, and they were so curious.
However, everyone had seen the world, so they calmed down and continued to review Wang Donglai's design plan.
Half an hour later.
The questions that should be asked are almost the same. The experts present also asked some questions one by one, and they all had a general situation in their minds.
The next step is to prepare for the evaluation of Wang Donglai’s design plan.
After waiting for a while, the expert group exchanged opinions.
This exchange caused a problem.
Some people think Wang Donglai’s design is forward-looking and worth a try.
Part of them thinks that this design plan is feasible in theory, but if it is implemented in practice, problems will inevitably arise.
“Academician Wang, the rocket engine plan you designed is a good plan, but I don’t think it is feasible!”
“From this design plan, it can be clearly seen that Wang With the academician’s talent in aerospace rockets, I believe that if academician Wang studies in depth for another two years, he will definitely be able to perfect this design. By then, it will definitely not be a problem!”
In the end, the expert group's opinion was unified.
After hearing the results of the expert review, Wang Donglai acted very calmly.
"Experts, theoretically speaking, is there no problem with the launch of the rocket I designed? Is it feasible?"
Wang Donglai looked at many experts and asked calmly road.
“Hmm!”
"Academician Wang, we are not denying your design plan, but because..."
Before the expert finished speaking, Wang Donglai spoke.
“I think I have something to remind all experts.”
“At the beginning, I said that this rocket engine is for my company. It is designed by the space rocket company, which means that it does not occupy national scientific research funds, but is funded by Galaxy Technology."
"So even if the cost is high, it is Galaxy Technology's business."< br>
"In addition, you are all industry experts and you all know the level of our country's aerospace technology."
"We have been crossing the river by feeling the stones, which has saved us countless The cost of trial and error saves a lot of time.”
“But this is not entirely a good thing. We are crossing the river by feeling the stones. It is said that it can save time and cost, but it will inevitably fall behind."
"Our country is developing very fast, but we have not changed this mentality in many fields."
“A powerful country cannot always follow others and imitate and improve technology.”
"We must try to develop new technologies, step out of the comfort zone, and bravely try and make mistakes."
"This is also an important purpose of my creation of Galaxy Technology Space Rocket Company."
Wang Donglai What he said was extremely serious.
The expressions of everyone were also different, and for a while, the scene was extremely quiet. (End of this chapter)