For Shin Siguchi, he knew that being able to build a turbojet engine was great, but he just knew it was great. His major was the principal of the aviation school, and he had an understanding of aircraft, but he also had his limits.

Hu Wenhai always claimed that it was a toy, and in his opinion it was a toy with many uses. The country was in financial difficulties, so it was helpless to temporarily use toy model aircraft instead of training.

But he just had a vague impression of whether this turbojet engine is good or not, and he knew it was good, but he couldn't tell where it was good, nor could he tell how good it was.

In order to motivate a professional, Director Wang, he had already disassembled the turbojet engine on the model aircraft and asked the person to send it to Shengjing.

The kj66 small turbojet engine is an excellent design that has finally dominated the field of jet model aircraft after decades of market elimination. This small turbojet engine can only provide 2.5kg of thrust to the latest model, which can provide 12kg of thrust. While ensuring amateur hand-made conditions, it can be said that the design has been achieved to the extreme. Its thrust-to-weight ratio of up to 8 can even win the second and third-generation engines in seconds.

As the saying goes, laymen watch the excitement, and experts watch the tricks. After studying the design of kj66, Director Wang couldn't help but be very interested in it.

On the one hand, in order to meet the personal DIY needs, kj66 cannot use difficult-to-get materials, and the processing accuracy and difficulty must be at ordinary levels. On the other hand, it has excellent performance and low cost.

This contradiction is rarely perfectly compromised on kj66. From Director Wang's perspective, this is not a toy, it is clearly a genius's flash!

According to his understanding, those who can design engines of this level must have a deep attainment in aviation engine technology. It is hard to say that it is the work of an old engineer in Xiucheng? But the circle of aviation engines is so big. I haven’t heard of anyone from Xiucheng. If you look for it, you still stay at work, there will be nothing else.

Director Wang has not thought about Hu Shiwu, but although he is a level 8 worker and has participated in several aviation engineering battles, he is just a worker after all, so how could he make such an innovative product?

Until this moment, even though he heard Si Guxin confirm in person, he still couldn't believe it.

"Brother Si, what did you say? The designer of the small turbojet engine you sent was this young man?"

Si Guxin nodded with a wry smile and said, "I didn't believe it at first. Hu Wenhai's grandfather is Hu Shiwu. You should still remember it? I began to think that this engine was his grandfather's work..."

"This is unlikely. Lao Hu's knowledge structure cannot make such a design." Director Wang concluded firmly.

"Yes, I later found out that I was misunderstood." Si Guxin sighed a little embarrassedly and said, "Who could have thought that it turned out to be such a little guy who is just a second-year high school student!"

Director Wang looked up and down Hu Wenhai, nodded constantly, and greeted: "No, your name is Hu Wenhai, right? Come on, come with me and tell me how you designed this engine."

"Hello Grandpa Wang, I'm just doing it all. How can you be so worthy of your praise..."

"You can't say that. The simpler thing is, the more you hide great wisdom. It's not that no one has done miniaturization of turbojet engines, but I haven't seen it to be as small as you!"

Director Wang held Hu Wenhai's hand and couldn't wait to turn around and walked into the office building. Si Guxin smiled so hard that he couldn't stop and followed the two of them in a horoscope. Only the driver Xiao Jiang stood alone in front of the gate. He scratched his head and shook his head, "Hey, it's no wonder that Tsinghua and Peking University doesn't take it seriously."

According to his opinion, Hu Wenhai said that going to the National Defense University is probably an excuse to go to the University of Science and Technology of China. Such a genius is also a breeze to study abroad.

In the 1980s, first-class talents always yearned for going abroad. No matter whether they went out or not, they always wanted to go out. This is not a saying that they admired foreign countries and fascinated the foreigners. It was just that the social atmosphere at that time was like this, and China at that time really needed to draw nourishment from abroad to catch up with the trend of the world.

"I noticed that the performance of your engine should not be fully excavated. For example, although this bearing is a very good product, it should still not meet the design needs, right?"

Director Wang pulled Hu Wenhai directly into his laboratory. On the laboratory bench in the middle was a set of turbojet engines he made. Various testing equipment filled the laboratory bench, and the inspection data also covered the blackboard on the entire wall.

Obviously, after obtaining this engine, Director Wang has conducted detailed tests and analysis. As a professional, his questions are very serious.

"If it is implemented completely according to my design, the speed of this engine should be more than 100,000 rpm." Hu Wenhai said with some regret: "But as Director Wang said, although he used the best bearings I could find, it was a pity that he still couldn't meet the requirements. This time, Grandpa Si and I came here in hopes that Director Wang can help us and continue to improve the performance of this engine."

"I know this. You plan to use model aircraft as drones instead of real aircraft training." Director Wang nodded and sighed and said, "The country's economic difficulties are now in a state of economic difficulties, and there is no way to do anything about it."

"Yes, but the model aircraft is a model aircraft after all, and the handling of the real machine cannot be fully simulated. We just want to make the real machine as close to the real machine as possible."

"This is not easy. Most of the work of training in a fighter is to be familiar with the engine of a fighter. Under what circumstances will it stop, when will it stall, and how to change the tail spin..."

"Grandpa Wang, you misunderstood." Hu Wenhai waved his hand quickly and said with a wry smile: "The real-life aircraft is just a supplement to pilot training. The advanced courses you mentioned must be trained on the real-life aircraft of the flight wing. Our real-life aircraft is mainly for beginners and pilots to maintain their status on a daily basis. However, Grandpa Si and I hope to make the real-life aircraft perfect."

Director Wang thought about it and nodded, "Well, this idea is also good. Although it cannot replace real-time training, it can at least be used to practice hands and do tactical verification."

"Yes, that's what we mean." Hu Wenhai struck while the iron was hot and continued: "If you want to simulate a real aircraft, you must increase the output of the engine, optimize its flight parameters, increase the density of the entire aircraft, and reduce the thrust-to-weight ratio of the entire aircraft to the level of the real aircraft. Everything else is easy to say, but only this engine optimization is really incompetent with my ability."

"this……"

Speaking of this, Director Wang looked embarrassed and sighed: "It's not that I don't want to help, but to be honest, I have never been exposed to the miniaturization project of engines, and I have never accumulated this area before. The most important thing is that in my opinion, the design of this engine is already very excellent, and I don't know where to start for a while."

Sigu News Yan bang bearded and glared: "Lao Wang, why are you still humble at this time? It's not easy for me, old man. You are a great scientist at a national research institute, and you can't even change the design of a child?"

"If you can't change it, you really can't change it." Director Wang spread his hands and said helplessly: "In my opinion, this engine is already an extremely mature product. Any change will lead to its cost and manufacturing difficulty, and the performance improvement will be minimal. This is not only me, but I went to the 606 Institute to visit people yesterday. They are specializing in the engine research and have indeed given a lot of opinions."

"For example, if you switch to titanium alloy to cast blades, it can withstand higher temperatures and increase the efficiency of engine operation. You can also use oil film to extrude bearings or high-energy nozzles, but the problem is that if you have this set, the cost of the engine will be as high as the sky. However, the increased performance is completely unrepresented. The best way is to maintain the current design unchanged and reduce the loss of production technology to the design."

"How to reduce the loss of production to design?"

Director Wang said: "I don't know, I'm not the designer of the engine, how do you know where there is room for improvement in the current product?"

Speaking of this, Si Guxin and Director Wang turned their heads to look at Hu Wenhai. After all, this engine was made by him, so he knew the best of what performance it should have. Since that is the case, we must also listen to his opinions on how to realize its potential.

Hu Wenhai touched his chin and thought for a while. Suddenly, his eyes lit up and he raised his eyebrows and said, "To be honest, it is actually very simple to improve the performance of the engine. Just increase the speed without changing the existing design, and replacing the bearing should be able to achieve it."

Director Wang rejected: "But the bearing you use is already the best on the market."

Si Guxin looked at Director Wang in surprise and asked, "That's just a product on the market. Isn't your 601 better?"

Director Wang smiled bitterly and nodded, "Yes, yes, but it's not that easy to miniaturize. And the bearings we use, I'm afraid your real-life machine can't afford it."

"That's true." Si Gu Xin felt that the problem had returned to the starting point. Can the model aircraft really not become a real-life machine?

Hu Wenhai hesitated for a moment. He had a solution in his mind, but there were no examples in later generations, so he was a little unsure whether it was feasible: "Actually, I have an idea that maybe I could use air bearings. Anyway, I also need to increase the weight of the aircraft. Instead of using iron blocks to counterweight, it is better to put a can of compressed air on it."
Chapter completed!