Chapter 324: We have better technology

How can Niu Guoren cooperate?
This is a question Qin Guan is considering recently. To put it directly, it is definitely a lion's open mouth, so he must think of an excuse.
Xiaolong, of course, is a bait. It is the most important thing for one's own side to take the initiative.
Niu Guoren, don't you want to improve Spey? Of course not, they must also be in demand. For example, Eagle Country's Tomcat fighter is looking forward to new engines.
In this era, although Eagle Country has developed advanced F100 series engines, the reliability is too poor, making their F-15 aircraft the queen of the hangar.
At this time, if Spey is motivated enough, it might get an order.
Niu Guo's current new engines are all mid-push, and only Spey can barely be considered a big push.
Pulling Niu Guoren to improve together, Niu Guoren has long been familiar with this Spey, and while following the improvement process, they can learn the experience of engine development, which is of great benefit to their growth.
Hearing Qin Guan’s proposal, Stanley’s eyes lit up. These Han Chinese people have such a big appetite. They haven’t fully grasped the technique of Spey, so they want to improve it?
It just so happened that this was also an opportunity, and it was depressing enough to think about it. He had already gained an advantage from his aura just now, forcing the Han Chinese to take that Super Seven over for research, but his Royal Highness suddenly came over, his You have to behave like a gentleman, not to shame the royal family.
Now, you can finally continue to complete the task.
Stanley came interested: "How do you plan to improve?"
"Using a brand-new fan and low-pressure compressor, the original 5-stage fan was changed to a 3-stage fan and a 2-stage low-pressure compressor. The diameter of the fan was increased from 826mm to 950mm, which increased the air flow and pressure ratio, and eliminated the import The guide vane, the high-pressure compressor is changed from 12-stage to 11-stage, and the installation angles of the turbine guide blades and rotor blades are modified. Through these methods, the thrust of the engine is increased to the level of 11 tons."
If these words were spoken from Mr. Wu's mouth, then it is acceptable. After all, Mr. Wu is an expert in engine development, but now, he said it from Qin Guan's mouth. A series of professional data is the most terrifying. However, these improvements are actually planned internally by Rolls-Royce.
Rolls-Royce actually had a plan to increase the power of Spey to 11.5 tons, but in later generations, this plan was delayed until 82 years. As a result, the XG-40 project was launched. Compared with improving an old one Spey, Rolls-Royce is no longer interested.
Historically, Han had actually proposed to improve Spey, but this plan ended without a problem. Han couldn't even copy the original Spey. How could it be improved?
But now, a few years ahead of schedule, Qin Guan's proposal is still attractive.
Okay, you want to improve Spey’s motivation, so this is not part of the original agreement, right? Let's propose additional agreements. Is it always possible?
Stanley suddenly remembered a question. Up to now, it has been half a day since the meeting, and his purpose has not been raised.
Damn, the Qin Guan in front of him is like a professional negotiator!
How about your Super Seven? If we don't let us study it, we will definitely not agree with this plan. At the same time, how much money do you plan to allocate to do it? The development of an engine burns money. If you spend another 30 million eagle dollars, it may not be enough.
However, he still had no chance to speak.
Because Qin Guan was talking again: "At the same time, in the combustion chamber at the rear, we also want to increase the turbine temperature. By raising the temperature by about 100 degrees, the engine thrust can be increased by another 10%, reaching 12 tons. The thrust of the company has officially entered the ranks of high-thrust engines."
The principle of an aero engine is simple to say. The front is a large fan blowing, the scientific name is called a compressor, when the wind is blown into the combustion chamber at the back, the fuel is injected and burned, and it becomes a high-temperature and high-pressure gas.
These gases do not come out directly. They must first push the turbine blades behind them. In fact, they are like a windmill before coming out.
Why do you want to do such a thing later? Because it drives the compressor in front to rotate!
And this turbine blade is blown by high temperature and high pressure gas. The higher the temperature it can withstand, the greater the thrust of the engine.
When the jet engine first came out, the turbine temperature was only a few hundred degrees. After more than half a century of development, the temperature-bearing capacity of cast turbine blades increased from around 750°C in the 1940s to around 1700°C in the 1990s. The thrust of the engine , There have also been earth-shaking changes.
Of course, this great achievement is a joint contribution made by the joint development of blade alloys, casting technology, blade design and processing, and surface coating.
Of course, this is not easy. Back then, during the Great Leap Forward, the engine factory only increased the turbine temperature of the turbojet-7 engine by so many ten degrees. As a result, successive mechanical failures followed, and finally It can't be overcome.
The aero engine is the crown of industrial science and technology in the whole country, and the turbine blade is the brightest night pearl on the crown. The average country simply can't play, there is no research and development system, no industrial accumulation, how is it possible!
However, as long as there is a breakthrough, the thrust of the engine will surely soar by a large margin. This is the most direct and rude solution.
Hearing Qin Guan's words, Stanley couldn't help but slurped his mouth. He could really break it. Do you think that the turbine temperature is increased when it wants to increase? How many things will this involve?
"Mr. Qin Guan, is there a basis for you to say that?" Stanley continued to make himself more elegant, um, it was a waste of time to mention professional content with a layman.
"Of course we have. In our country, we have developed a directional single crystal hollow blade without margin. It can withstand a temperature of about 1,700." Qin Guan said: "I will explain to you, this directional single crystal is The arrangement of internal molecules..."
"Wait, you don't need to explain to me, you said, you already have single crystal air cooling blades?"
Turbine blades have to withstand very high temperatures, so they need to cool it down? How to drop? The easiest way is to make it hollow and blow cold air inside to cool it down.
This cooling technology alone can increase the temperature resistance of the turbine by tens of degrees. However, if it is made into a hollow core, its mechanical strength is required to be quite high. Only the internal molecular ordering rules, that is, the formation of single crystals Row.
This technology is not even mastered by Niu Country. Are the Han people bragging?
"Of course, how else can our Super Seven fighters have such high mobility?" Qin Guan asked back.