Chapter 412: The Development Path of High-Thrust Engines
High-thrust engines, at least with a thrust of more than 10 tons, are still very few in the current era.
There are almost no in Europe, Europe likes to use twin-engine medium thrust, medium aircraft are enough, there are almost no heavy air supremacy fighters in Europe, even the Mirage 2000 is not qualified, only the Mirage 4000 is counted, and the M53 engine they use can barely be regarded as a high-thrust engine.
Only the Soviet Union and the United States could do it, and this is the essence of great powers.
The United States is the first to move towards this kind of engine, their result is the F100, this advanced engine produced by Pratt & Whitney, the thrust-to-weight ratio first reached 8 level, in this era, the general engine thrust-to-weight ratio, are hovering around 6, it is precisely because of this engine, there is the third generation of the United States F-15, F-16 fighter glory.
However, the United States also suffered for this, after bidding, they chose Pratt & Whitney's products, starting in 1969 with bench testing, it is said that they have been engaged in more than ten years, but after equipping the troops, there have been repeated large-scale problems, and even led to the grounding of aircraft.
Faced with this scenario, Pratt & Whitney is not in a hurry, their hard days in research and development have passed, and they can now lie down and sleep peacefully, and they continue to apply for more improvement funds from the Air Force while living a slow and leisurely life.
This made the US Air Force very angry, and they finally realized their mistake, and in the selection of engines, the results were prematurely determined, and then, it led to the monopoly of Pratt & Whitney.
Monopoly is the result of this, only competition can have vitality, so the US military began to re-focus on the engines of General Electric, which they had abandoned.
At the time of the bidding, it was the code name of the F101 engine, although the bid failed, but it was still improving, and after years of improvement, it was finally selected by the Navy and given the number F110 to change the engine for their F-14 Tomcat fighter.
Having learned the lessons of Pratt & Whitney's engines, GE's engines do not blindly pursue technical indicators, but take reliability and durability as an important index, so that although their thrust-to-weight ratio is only about 7, the reliability is quite high.
This kind of engine, after entering the sight of the US Air Force, Pratt & Whitney immediately became anxious, they knew that competitors were coming, so they fooled the US Air Force and asked them to give up the F110 engine, while quickly improving their F100 engine, so that this engine would continue to mature, and they did not dare to ask the Air Force for more funds, for fear that the Air Force would be in a hurry.
This incident fully illustrates the importance of competition, there is competition, there will be development, but unfortunately, the country is now unable to achieve this ability, the country concentrated all its strength, the development of an engine, but it is not yet successful, it is simply impossible to divide into two groups, invest in two projects, separate development and competition, the world, only the Americans can play like this.
The F110 engine is so mature, at the beginning of this year, it was officially finalized and put into service, in addition to changing the engine for the Navy, but also for the Air Force's F-16 engine, no matter how Pratt & Whitney fools, they will not be fooled again, if it is not for the inconvenient design, they may also have to make part of the F-15 accessories for this engine.
This is the origin of the F110 engine, because he has been in contact with Grumman, so Qin Feng is also very familiar with this project.
However, Song Lao continued to frown: "That's right, the F110 engine is also one, but we can't get this kind of engine." ”
"Yes, we certainly won't be able to get it, unless our Air Force decides to buy a batch of Tomcat fighters." Qin Feng said.
The Air Force has been inspecting, but the price is too expensive, and the country still can't afford to invest in it, especially since the other side refuses to export the license and only sells finished products.
"However, we can't get the military one, and we can still learn from the civilian one." Elder Wen on the side followed and spoke, and now, Elder Wen already knew that Qin Feng and his ideas were not bad.
The two almost said the model together: "CFM56! ”
If you are not familiar with it, you will feel that the various models are dazzling, but the basic can still know that this engine is the engine used in civil airliners, and the engine of fighter jets is absolutely incompatible.
The engine of the fighter jet pays attention to high thrust and has an afterburner, and the engine used in civil aviation pays attention to low fuel consumption, low noise, and no afterburner, which are almost completely different.
However, as soon as the insider's words were spoken, Song Lao asked the two, "Their core machine is the same?" ”
Western aero engines, the development is very fast, and it is quite scientific, they will not develop an engine for a fighter, the first thing they came up with is the internal core machine, this thing is the core.
As long as the core machine comes out, then it will be easy to continue to do it, on a small duct, add an afterburner, which is a fighter engine, on a large duct, this is the passenger aircraft engine, for sea salt prevention treatment, the power is output through the shaft, this is the gas turbine used on the ship, a series will come out.
CFM56 and F110, it seems that there is no difference, however, their core machines are the same, they are both the core machines of F101!
China can't get F110, but CFM56 has been installed on Boeing's passenger plane, into their own civil aviation field, as long as from the civil aviation, take a backup CFM56 engine, you can map out its core engine, and then, combined with the development experience of turbofan six, plus the fighter's outer duct and afterburner, in this way, their own military turbofan engine, will come out!
Obviously, this is definitely much faster than crossing the river by feeling the stones and developing a new engine. Your own advanced high-thrust turbofan engine is a shortcut.
Song Lao nodded cautiously: "It would be good if this kind of engine could be established, so that our fighters could have their own hearts, and the turbofan engine would be more fuel-efficient, which would allow our aircraft to have a larger range." ”
Song Lao, from the bottom of his heart, actually resisted the turbojet-15, and of course he looked forward to a better engine that could be used.
It would be great if such a project could be promoted!
"The three generations of engines in the West have matured after more than ten years of development, and we must be mentally prepared, even if we take a shortcut, it may take more time." Wen Lao sighed and said: "However, no matter how long it takes, we have to make it, our chairman once said that the atomic bomb will be made even in 10,000 years, and we must also have such determination in the aero engine." ”