Chapter 323: Spey's improvement

Robert is continuing to explain the problem. Some of the Chinese people here can't understand cow language at all, but the scholars are simply translating at the same time. Those proper nouns can be translated completely. That's it. , The people here are taking notes seriously.
When the prince leaves, even if this cattle countryman repents, at least the overall craftsmanship is already clear.
Qin Guan was also listening. Qin Guan didn't understand the specific content, but he could also listen to a general idea. Looking at the expression on his side, it seemed that this stumbling block could be overcome.
In fact, the expert watching the doorway is just a matter of dialing a few words, so that you can smooth your thinking and get a breakthrough.
Robert, after talking about it for an hour, this time is long and boring.
Andrew couldn't sit still a few times, but looking at Xiang Jing's relish, he could only continue listening.
Finally, Robert finished.
"I have a question." At this moment, Qin Guan said, "This blade is a complicated processing shape. Can we use CNC machine tools to process it?"
CNC machining? Hearing Qin Guan’s words, Stanley finally spoke:
CNC machine processing requires a multi-axis linkage CNC machine tool, so that it can have high enough precision for machining with no margin. It takes about three months to process a blade. At the time, we only started to try to use CNC machining on the latest engine."
Stanley explained very clearly, and at the same time was telling the other party a reason, want to adopt this technology? Stop dreaming Han Guo.
Even if Han is now a bridgehead against the bears, the Western technology has restrictions on the output of Han. Those backward things, such as the Spey engine, can be exported, and the processing technology is backward, even so. , Even the slightly advanced blade processing technology has to get stuck in Han Guo's neck.
As for CNC machining? Then stop dreaming.
The Western embargo against Han's high technology has always existed. How can it be possible to export this most advanced technology to Han?
This sentence is enough, at least it proves that CNC machine tool processing is possible. After we go back, we can study it by ourselves, and then bring a few from the machine tool cemetery to our engine factory!
As for talents...Technical talents are always a problem!
"Regarding Spey's technical issues, we believe that our two sides will definitely work together to complete this project." Qin looked at the absent-mindedness of His Royal Highness over there, and knew that this guy would not stay long.
So, let's just be more happy and mobilize the enthusiasm of the people of Niu.
"Now, we are also optimistic about the future of Spey." Qin Guan continued: "I wonder if you are interested in continuing to improve and develop on the basis of Spey and increase its thrust?"
In later generations, the introduction of Spey in the country was almost a half-waste project, except for equipment to the Flying Leopard, nothing else.
At the same time, in that era, there were also three uncles in China, turbofans, etc., and now, the weak domestic foundation determines that it must be developed in Spey to develop the domestic power system.
How to unfold?
For example, after mastering Spey’s technology, on the basis of localizing Spey’s material industry and processing industry, for example, modify the compressor, the shape and size of the blades, the fan, and even use new material manufacturing techniques and new materials. , To increase the thrust-to-weight ratio, reduce fuel consumption, overcome the inherent shortcomings of poor low-altitude performance, and even gradually come up with a magical modification.
This is not impossible, because after Spey exported to Eagle Country, it was given the number of the new TF41 engine. The non-afterburner version of this engine was used on the A-7. At the same time, Allison has come to come up with an increased version, intending to replace the unreliable TF30 engine on the Tomcat fighter.
This increased thrust version, by improving the compressor and other components, finally allowed the thrust to exceed 10 tons, and even further increased to 11.5 tons.
If it is the latter thrust, it will be sufficient for the time being if it is used on its new third-generation aircraft.
It takes time to fully understand the technology of Spey in the country, and it will take time to improve on the basis of Spey. If you develop it together with the cattle people here, you can greatly speed up the progress.
Of course, there will be a lot of problems in the middle. Everyone has a clear understanding of the capriciousness of the people of Niu. It is very likely that after getting the money, they will come to demand more.
In addition to increasing thrust, another aspect is the development of civilian use. The current Spey MK202 bypass ratio is 0.62. Compared with Eagle Country's JT3D and JT8D in the same period, if the bypass ratio is enlarged to about 1 to 2, The total mass should be within an acceptable range. The normal thrust of 6 to 8 tons is no problem. In this way, a JT3D and JT8D first-class aviation engine with a lower thrust-to-weight ratio but lower fuel consumption can be obtained.
If there is such a thing, it means that the aircraft can reach the level of the JT3D version of Boeing B707, that is, it is no problem to transport 10.
One issue was political issues, and the other issue was the engine. Although some turbofan eight engines have been imitated in China, when it comes to concrete terms, it can only be hahaha.
A large number of components are all made with JT3D. Can this be called imitation? Just look at the current domestic level. The processing of a Spey engine blade can be troublesome for several years. If the country can imitate turbofans within a few years, Qin Guan has reservations.
Compared with this unreliable turbofan eight, it is better to use Spey's improvement and become a series. After all, Spey originally has a civilian model.
Then, on this basis, through the use of annular combustion chambers and other improvements, similar to the Xiongguo D-30KP series, the bypass ratio can be increased to about 2.5, and the core flow rate can be increased to about 110KG/S to achieve D-30KP2. The 120 kN level.
Under this circumstance, the H-8 plan and the Yun-9 plan in history have fallen. The heart of a large domestic aircraft does not need to be controlled by others. Although the performance may be poor, at least it can be used. At the same time, with the help of Niu Guo, the bypass ratio can even be increased to 3.
With the core engine unchanged, various modifications can be made, provided that the technology of this engine must be fully understood!
Even marine gas turbines can also be carried out on this basis. After all, there are also gas turbines modified by Spey. For example, the marine gas turbine model SM-1 was modified by Niu Guoren himself.
It can be said that Spey’s thorough understanding is of far-reaching significance to Han, and the heart problem can be temporarily solved.
However, it is very difficult to understand this thoroughly. If you pull the Niu Guoren and improve Spey together, the progress can be greatly accelerated.
(Writing here, Hua Xiong suddenly sighed. Back then, if Spey’s skills were really well understood, then our heart problems would have been solved long ago. Well, in Hua Xiong’s novels, we must make up for this regret .)