Chapter 463: Increase the turbine front temperature

Qin Guan sat beside Li Yong and asked Li Yong, "What is the temperature before the turbine of our engine?"
Hearing Qin Guan asked such a professional term, Li Yong also casually replied: "1167 degrees Celsius, if it is changed to Kelvin, it is 1440 Kelvin. This temperature is not too low."
The total temperature of the turbine refers to the temperature between the gas coming out of the combustion chamber and the front of the turbine. This concept is an important indicator to measure the performance of the engine. The higher the total temperature of the front of the turbine, the stronger the performance of the engine’s turbine. The oil rate is also lower, but the total temperature before the turbine is limited by the material of the turbine blades. The temperature cannot be too high, otherwise the turbine blades will melt and deform.
Look at the progress of aircraft engines, every time, it is accompanied by an increase in this value. Even if Han Guo transforms Turbojet-7, the easiest way is to increase the temperature value.
However, it must not be increased significantly. If there is no advanced material support, even an increase of 1 degree is dangerous.
Now, this index of Spey is the value of a typical second-generation engine. It sounds very high, but listen to the value of the third-generation engine.
A typical third uncle, even if it is an early model, the temperature of AL31F is about 1400 degrees, which is 1673 K, while F110 is 1700 K, Taihang's is 1750, and the F119 engine of the later world Eagle Country has reached the terrible 1950 The number, and the turbofan-15 developed by Han Guo in later generations, is said to have reached around 1,900 K.
(The commonly used temperature is Celsius, and the temperature of the ice-water mixture is taken as zero degrees. In science, the most commonly used temperature is Kelvin. The lower limit of the temperature in the universe is 0, which is 273.)
To reach this temperature, the turbine blades used must have sufficiently advanced performance. This material science is also a reflection of the level of scientific research in a country. In this regard, Eagle Country has been far ahead.
Qin Guan provided the technology. The single-crystal turbine blades produced by Professor Zhang were actually used in Taihang, which can be stabilized at 1750 Kelvin. Now they are used, and it is no problem to easily reach 200 or 300 Kelvin.
Now, the turbine temperature of this second-generation Spey engine is only more than 1,400 Kelvin. Qin Guan couldn’t help but said:
If we increase the turbine blades by 200 Kelvin to reach a temperature of more than 1,600 Kelvin, what will happen? ?"
It reached a temperature of one thousand sixty-seven, that is, the front temperature of the third-generation machine's turbine. Hearing Qin Guan's words, Li Yong shook his head on the side: "No, that's impossible. We simply can't have such materials. Chinese people will not provide us with technology, but if it does reach it, then our Spey engine can reach 110 kN in conservative thrust."
Directly increasing the front temperature of the turbine is the fastest way to increase power. Spey was originally a big push, but the lower front temperature of the turbine makes its power not very prominent. Now, if the front temperature of the turbine is greatly increased, then The thrust of the engine is also improved very quickly. Of course, it needs to be redesigned. After all, the rear is improved, and the front compressor must be optimized to adapt to this air flow.
This is a systematic project.
What Qin Guan needs is this big project.
The imitation of Spey is only the first step in the turbofanization of domestically-made engines, and at the same time it serves as the engine of the third-generation domestically produced engines.
However, Spey is always the foundation of the second-generation engine no matter how it is modified. Its biggest shortcoming is that the high-altitude and high-speed performance is a bit poor. At high altitude, the thrust is greatly reduced. Therefore, it is not completely suitable for its third-generation aircraft.
On the premise that the self-developed engine cannot be overcome, the Spey engine is an emergency first. After the self-developed engine is successful, it can be used to replace the Spey.
Then, Spey’s improvement can train its own engine team, and even if it allows one to follow the course of an engine modification, it will benefit a lot.
This is also the purpose of Qin Guan.
Now, relying on Professor Zhang's results to fool them, relying on Professor Zhang's turbine blades, up to 1700 K, absolutely no problem.
At this time, Qin Guan was chatting with Li Yong while waiting for the last ten hours, and after an hour was not there, there were waves of footsteps behind.
"General Manager Qin Guan is here?" Stanley's voice was quick.
As the chief engineer of Rolls-Royce, Stanley has been in Han for long enough. Now, he is here, ostensibly waiting for the 150-hour permanent test run of the Spey engine, which shows Rolls-Royce’s commitment to this matter. Paying attention, in fact, is waiting for Qin Guan.
If the test run is over and Qin Guan is not found, then Stanley will return to the country, and he can accurately determine that he has been fooled.
What Qin Guan said about advanced single crystal turbine blades was definitely a trick to fool people.
Now, when I heard that Qin Guan was here, Stanley immediately brought his men over.
"Master Stanley, I am very glad to meet you." Qin Guan said: "The Spey project has witnessed the friendship between our two parties. Now, the first phase of the project is progressing smoothly, and our second phase requires your Full support of it."
Domestically produced blanks can be produced only after Niu Guo provides materials. Of course, now Qin Guan is not afraid that they will be tricked. If they do not provide them, they will develop their own materials. The materials are not a matter of minutes.
Qin Guan doesn't care whether Niu Guoren cooperates. What Qin Guan cares is whether Niu Guoren will continue to research and develop on Spey. After all, learning experience is the most important now.
"Yes, we are also very happy." Stanley said: "Seeing that the Spey engine assembled by you has reached the level of our original production. This is a manifestation of our friendship. Then, General Manager Qin Guan, Fang mentioned the turbine blades last time..."
"We will talk about turbine blades when the test runs are over." Qin Guan said: "We have invited Professor Zhang, who is in charge of the research and development of us, to the 4430 factory. Just when the test runs are over, he will almost arrive."
A professor specially developed? Hearing Qin Guan's words, Stanley nodded. If Qin Guan said that he did it himself, he would definitely not believe it. Now, they say it is a professional professor, it is possible.
So who is it? There are not many scientists in Han, but even fewer in terms of materials, Professor Zhang? It seems that there is one in my memory.
Time, after a little bit of time, after a long wait, finally, the time is up, 150 hours of continuous test run, the Spey engine manufactured by Han Guo has withstood the test!
Suddenly, everyone cheered and succeeded!