After listening to what Ji Yao said about the engine, Lin Dong summed up softly: "Listening to what you said, the reason why our aero engines are backward is mainly due to the short development time, the lack of innovation and the lack of industrial production accuracy?" ”

Ji Yao nodded: "One is that the country's basic research is weak and the technical reserves are insufficient; second, the economy is relatively backward, and the research and development funds are strictly insufficient; the third is the lack of understanding of the development law of the technical complexity of the engine; Fourth, the construction front is too long, the stall is too large, the strength is too scattered, and the level is low-level repetitive; Fifth, the management model is relatively backward. ○”

Speaking of this, Ji Yao sighed: "Other countries' aircraft and engines are developed separately, but our country is matching, what kind of aircraft is developed, what kind of engine is studied, the aircraft is developed in a situation, and the engine has stopped developing, the result is that there is at least a 30-year gap between the engine and the old United States, and they also said that our research and development is backward, the main thing is not a technical problem, but a system problem!" ”

Ji Yao became excited as she spoke, and an angry expression appeared on her face that only a young man could have: "If the gap between aero engines is still excusable, then the car engine is simply caused by some people's eyes!" Many people in those small engine companies have no sense of responsibility at all, only look at the money they can make in front of them, and they don't care if they can survive for a long time, the quality is not good, the internal standards are completely different from the external standards, they are used to copying others, they do not pay attention to the excavation and utilization of talents, and they do not know how to develop and innovate. ”

Speaking of this, Ji Yao regained his senses and looked at Lin Dong calmly: "You should already know by now how huge and complicated a project it is to build an engine, are you still going to study this?" ”

Lin Dong was silent for a while, and Ji Yao thought he was thinking about it. didn't know that Lin Dong was sorting out the information that appeared in his mind. If according to the normal development trajectory of later generations, Huaxia did not have a new type of aero engine with the same international advanced level as it came out ten years later, and it was applied to the fifth-generation aircraft, but at that time, the fifth-generation engine in the United States had been mass-produced for several years, and the newer generation engine was also being studied, which was still more advanced than Huaxia.

There is a full set of information on advanced aero engines in the encyclopedia, which Lin Dong can't understand, but this does not affect Lin Dong's ability to "move" it, the problem is. Who will move out?

Aero engine is a thing in engineering, Huaxia in this aspect of engineering talent reserves and knowledge reserves are insufficient, the whole Huaxia on engineering academicians less than five or six, the youngest are seventy years old, this talent is afraid that there is no follow-up, Lin Dong for a while did not know who to give this knowledge in his head?

Ji Yao saw that Lin Dong was pondering and didn't bother him, she was still very curious. Where did Lin Dong get so many whimsical ideas. Ji Yao even felt that Lin Dong already had a plan in mind when he was looking at engine knowledge. It's just that this plan, can it work? She didn't know.

However, thinking of this young man who used to read books in the library with him, it took less than half a year to first build a search engine that made the Internet world look at it. It has also given birth to a dark horse in the automotive battery industry, and maybe, he can really be in the engine. Make another big move?

Lin Dong didn't have an eyebrow, so he simply raised his head and found that Ji Yao was looking at him, a little distracted, so he said, "I know a little bit about the engine." I'll take a closer look at it later and see if I can come up with any new ideas. ”

Ji Yao joked: "You must do it!" Just like you came up with a flower search and a flower battery, I look forward to you coming up with another flower engine! ”

Lin Dong smiled bitterly: "I'm afraid this is not easy, just like what you said, imagine it, The maximum afterburner thrust of the Al-31 turbofan engine of the Su-27 is 12.5 tons, and the 2 engines can propel the Su-27 to fly at more than twice the speed of sound, but the fan diameter of the Al-31 is less than 900 mm, and the turbine smuggling is less than 300 mm. The problem is that the car walks slowly, and the plane has to fly at hypersonic speed, and all parts have to withstand the extremely harsh high temperature and high pressure test. ”

Ji Yao blinked: "Did I just say this?" ”

Lin Dong suddenly felt a little regretful, but he explained the reason, but Ji Yao really didn't say this, this is all in the information, he just picked up some of the current information and used it, but he didn't expect to be discovered by Ji Yao, Lin Dong had to point to the book in front of him and said, "I read a little bit just now, and I have a little experience." ”

"Then you continue!" Ji Yao said with interest: "I used to read these contents, I watched them all by myself, no one communicated, I just told you so much, many of them are my own opinions, let me see how your views are, if there is anything that can inspire me." ”

Lin Dong had no choice but to continue; "A turbofan engine used for supersonic fighters is generally one meter in diameter and four meters in length, and such a small cylindrical object, such as the Al-31 engine, must be stuffed into a four-stage fan, a nine-stage compressor, a two-stage vortex, and so on, including the control system, how complicated it is! It is precisely because of this that only Britain and the United States have mastered the first-class engine, and Russia's can only be regarded as second-rate. ”

"Monocrystalline blades?" Ji Yao was somewhat familiar with this word, but she couldn't remember it anymore.

"The full name should be a single crystal hollow blade, that is, a blade with an area of a few square centimeters with a large number of free-form surfaces and complex internal cavities, which is mainly used for inlet air cooling." Lin Dong is also not easy to explain, "This is difficult to explain in the vernacular, but this is the core technology." However, although we have made a breakthrough, it cannot be applied to the current aircraft, and our current aircraft can only use the third-generation turbofan engine. This is really hard! ”

Ji Yao noticed that Lin Dong said it was difficult, she opened her eyes wide and asked, "It's difficult, it's not impossible, right?" ”

Lin Dong looked at her eyes, hesitated, and said, "I think...... Yes, it is possible. ”

Ji Yao clapped her hands excitedly, suddenly realized that this was in the library, and stuck out her tongue slightly: "It's possible." Let's go, let's stop bothering the others, let's get out! ”

Lin Dong was stunned by Ji Yao's action, and when he saw Ji Yao's pink tongue, he suddenly had a strange thought in his heart...... Well, forget it, it's better not to turn into a big bad wolf!

(This chapter is mainly a foreshadowing, so there are a lot of technical things, and it may be a little naïve in the eyes of professionals.) I also hope not to be surprised, after all, if you want black technology, it is impossible to have less engines! ）

ps: Thank you for the heartbreak of Brother Hongchen, xoom, Nuan Yang's Little Book House, Jiangqiang's Noodles, Xiao Yi 002, Tragic Connection, Lazy Qi and other book friends for their tips! Thank you for your support, I don't know what it is in the past two days, subscriptions have begun to decline, please come to more genuine subscriptions! (To be continued, the novel is better and faster!)