strictlysupreme Chapter 403 PDE's invincibility!
Chapter 403 PDE's invincibility!
Li Yang's sincerity and the goodwill released by Zhao Ze and others.
Jiang Liqun's lonely heart, which seemed to be frozen by layers of ice for thousands of years, slowly melted away bit by bit at this moment.
Almost five years...
He has never been so happy and cheerful as he is today.
When I was working at the Second Institute under Longguo Aviation Group.
Everything Jiang Liqun did was not favored or accepted by everyone.
The researchers under him felt that he was wasting his time, had no future, and was heading for a dead end.
Mr. Wu thought that he was stubborn, only cared about his own opinions and was inflexible.
I was becoming increasingly disappointed with him.
And now...
He Jiang Liqun felt.
I found a confidant and a fellow traveler.
After seeing that he was developing a pulse detonation engine, Li Yang not only did not deny his direction, but also carefully analyzed and reviewed the test questions he had set.
the most important!
Some of the analysis and insights he put forward have been of great help to me.
Many previously blocked ideas suddenly became clear after Li Yang's guidance, as if I had become enlightened.
My ears and eyes are clearer and my head feels much lighter.
Jiang Liqun is a man of action.
Seeing that the atmosphere was harmonious, he asked Li Yang in a negotiating tone.
"Mr. Li, it's still early now. If you have time, could you explain to me the questions you just mentioned?"
"At the same time, we can also take this opportunity to let Mr. Zhao and his team expand their knowledge and form a knowledge framework for the subsequent in-depth study?"
The layman looks at the excitement and the insider looks at the doorway.
Others may think that the questions Li Yang just raised about the pulse detonation engine are nothing special.
But Jiang Liqun knew.
Regarding a few issues that Li Yang casually analyzed.
If those equally stubborn retired old guys knew about this.
As long as Li Yang speaks.
They will definitely put on their work clothes again and help Li Yang!
Li Yang raised several issues and proposed feasible solutions.
It's like treating a patient.
Ordinary doctors only look at the symptoms and prescribe medicine based on the symptoms alone.
But Li Yang is different...
He not only analyzes why you have such symptoms, but also what causes it.
And find out the cause of your illness.
On this basis, we will not treat you as a patient at all, but tell you in detail how to prescribe medicine to cure the disease.
It also tells you what to pay attention to next so that you can recover faster and prevent recurrence.
What Jiang Liqun likes most are such scientific researchers.
These are the scientific researchers we respect and admire the most!
They not only have solid theoretical knowledge, but also rich practical experience.
otherwise.
There will never be such unique and profound insights!
Li Yang looked up and caught the hope in Jiang Liqun's eyes, as well as the thirst for knowledge on Zhao Ze and his group's faces.
He nodded and agreed readily.
"In that case, shall we start with the most basic knowledge?"
Jiang Liqun naturally had no objection.
"no problem!"
Although he is an experienced researcher, if Li Yang can teach him from scratch, he can still learn new knowledge from him.
Zhao Ze and the others were even more excited.
"Thank you, Mr. Li!"
Li Yang smiled slightly and motioned for them to move the stool in the corner and place it in front of the projector.
After they were all seated, he began.
"First of all, we have to abandon the traditional concept that the pulse detonation engine is a new concept engine based on detonation combustion."
"Unlike common rocket engines and jet engines, PDE uses the detonation wave generated by detonation combustion in the combustion chamber to compress the gas and generate power..."
Considering that Zhao Ze and his friends’ basic knowledge was not as good as Jiang Liqun’s, Li Yang started from the basic theories and taught them.
Anyway, I have some free time these days.
While teaching them, I am also consolidating the knowledge I have learned.
"Look..."
Li Yang directly opened the mapping software and drew a simple model for them on the spot.
"PDE is mainly composed of the air inlet, detonation chamber, tail nozzle, detonation exciter, valve, etc."
"A working cycle includes air intake, fuel injection, ignition, combustion and exhaust."
"When the explosive fuel or oxidizer mixture fills the detonation chamber, the ignition device ignites and detonates."
"Then, the detonation wave propagates toward the open end and is discharged from the detonation chamber, which is filled with high-temperature and high-pressure gas."
"When the detonation wave reaches the bottom exit, the expansion wave is reflected in, and the detonation products are discharged from the detonation chamber..."
After a brief introduction to the working cycle of PDE, the confusion on Zhao Ze and others' faces faded a lot.
The notebooks in their hands were now filled with notes.
Li Yang concluded.
"It can be seen that the entire working process of PDE is intermittent and periodic. In other words, PDE is a non-steady-state working nature."
"When the detonation frequency is very high, such as greater than 100 Hz, it can be approximately considered that the working process is continuous and can provide thrust to propel the aircraft forward!"
He looked around and felt relieved to see that everyone was listening attentively.
Regardless of their foundation, their attitude towards learning alone is worthy of recognition.
Li Yang asked.
"Do you have any questions you want to ask?"
After a moment of silence, Zhao Ze raised his hand, stood up, and asked humbly.
"Engineer Li, after listening to your explanation just now, I feel that PDE is very different from the conventional aircraft engines we study, such as the turbofan series."
"But what I want to know is, what are the advantages of PDE? What are the outstanding features of its performance?"
It sounds like PDE is really powerful.
But the explanation of theoretical knowledge is rather vague after all.
It would be much clearer if there were corresponding data to summarize.
Li Yang nodded with a smile and motioned for the other party to sit down before speaking.
"This is a very good question. Let me use some data from previous simulation experiments to explain it to you..."
"First of all, due to the working principle of PDE, the structure of PDE will become very simple. Naturally, its size will be much smaller than that of traditional aircraft engines. Roughly estimated, the size will not exceed two meters."
"According to my previous simulation test data, the PDE thrust-to-weight ratio can reach 20, and the flight speed can reach Mach 10. Under extreme conditions, it can reach Mach 17!"
"The thrust range is 0.5kg-50000kg, and the fuel consumption rate is less than 1kg/kgoh..."
"In addition, because of the characteristics of PDE itself, it has a wide range of applications, low cost, can be used at zero speed, has high combustion efficiency, and excellent high-speed performance."
"in addition……"
"PDE is the only engine that can operate in dual modes, it can have both air-breathing and rocket modes!"
After Li Yang finished speaking, there was a commotion at the scene.
Zhao Ze and the others had pleasant surprises on their faces and astonishment in their eyes. They were whispering to each other and discussing intensely.
And Jiang Liqun.
After listening to the data from Li Yang's simulation laboratory, an irrepressible excitement welled up on his face...