After seeing Mr. Xu close his notebook, Jiang Yan finally stopped and took a sip of water. During this period, Mr. Xu also rubbed his wrist, which was a little sore from writing. This good guy has been writing for several hours, and his wrist can be so painful. Not sore.
"Actually! I also have some other opinions about the aircraft engine." After smoking a cigarette, Jiang Yan continued.
"Can you tell me your opinion in detail?" Mr. Xu asked.
"We know that this bear usually designs one engine for one aircraft. Although he is the closest to the aircraft, the financial investment is quite large. Compared with the financial resources, we can't afford it. I thought, there is There are no other good development ideas. When I was studying abroad in Mao Xiong, I read through a lot of documents and found that Yingjiang's aircraft engines are based on a core engine research and development model."
"Core machine?" Mr. Xu asked Jiang Yan in surprise.
When Jiang Yan asked, he realized that there was no such thing as a core computer in the world. So Jiang Yan immediately opened his mouth and explained: "I call the core component of the engine, which is composed of the compressor, combustion chamber and turbine, developed to shorten the development cycle of new engines, improve reliability or develop various types of gas turbine engines. machine."
Before Mr. Xu could ask the question, Jiang Yan continued: "The core engine, as the name suggests, is the core of the aeroengine. It mainly includes three parts: the high-pressure compressor, the combustion chamber and the high-pressure turbine. They have to withstand huge loads under working conditions. load and extremely high operating temperature, the working environment is the harshest, and the requirements for strength and reliability are extremely high. Taking the first-stage high-pressure turbine rotor as an example, its operating temperature exceeds 1500°C, and the centrifugal load endured by each turbine blade during high-speed rotation is close to Ten tons, the average power output of each high-pressure turbine blade is equivalent to the engine power used in a bus.”
“In addition, the core engine plays an important role in compressing air, combustion heat generation and energy conversion. Whether a core engine has good performance and long service life is the key to measuring whether an aerospace engine is advanced and reliable. "
"I think this way, can we design and develop a universal core machine, so that using an excellent universal core machine as a platform, we can develop multiple types of engines.
For example, using a small general-purpose core machine as a platform, you can design turboshaft engines, small turbofan engines for helicopters, or short-life turbojet engines for hypersonic weapons; using a large general-purpose core machine as a platform, you can develop civil aviation engines. High bypass ratio turbofan engines used in passenger aircraft or military transport aircraft, high thrust-to-weight ratio turbofan engines used in fighter jets, and even heavy-duty gas turbines used in ships. "
In this way, we can eat more than one fish, that is, one engine can be used for other purposes. This not only saves time, but also saves a lot of money. Why not!
In fact, what Jiang Yan said is not wrong at all. In the era of Jiang Yan in later generations, aero-engine designers often spent more time and money to develop excellent and versatile core machines, and used the developed excellent cores to The machine-based platform design has derived a variety of engines. This can not only ensure the good performance of multiple engines, but also reduce the total investment in the development of these different types of engines.
For example, the D-36 aeroengine developed by Mao Xiong Advance Design Bureau in 1974 was originally used on the Yak 42 regional airliner. This engine has good performance and wide adjustment margin. Therefore, the D-18 engine for the An-225, the world's largest transport aircraft, and the D-18 engine for the Mi-26 helicopter, the world's largest take-off weight, were developed based on this engine core machine. -136 engine as well as the D-436 engine for large passenger aircraft. Nowadays, aero-engine design units basically adopt this technical approach to ensure the advancement of aero-engines and control cost investment and development cycle as much as possible.
After much consideration, Jiang Yan feels that this is the optimal solution for our current development, and it can even drive the development of other engines, such as ship engines, and can increase our other strengths in a different way.
"No, Xiao Jiang, wait a moment, wait a moment, you came up with this." After closing the notebook, Mr. Xu looked at Jiang Yan in shock. He had memorized what Jiang Yan said just now, word for word. When he got down, the more he thought about what he said, the more incredible Jiang Yan felt.
Just think of the airplane invention he made on a whim! But what he said now directly pointed out the development direction of aircraft engines. As an aircraft auditor and aircraft engineer, he knew the significance of this suggestion. It can be said that if he really follows what Jiang Yan said Going forward, it will not only benefit one aspect of aviation, but basically it will involve many, many aspects. This is a development proposal.
This is more than just a genius, this Jiang Yan is simply a monster, okay? But fortunately, this monster is now a flower farmer.
"No, Mr. Xu, why are you looking at me like this? It feels weird." After being looked at by Mr. Xu for about half a minute, Jiang Yan felt uncomfortable all over and couldn't help but ask.
"No, I think you are too evil. Why don't you come to our airport to develop your career?" Mr. Xu asked.
"Forget it! I'm quite comfortable staying in our research institute and have no plans to change places." Jiang Yan refused without thinking.
At this time, there was a knock on the door of Mr. Xu's office, and then Mr. Xu's secretary walked in.
"Mr. Xu, Mr. Jiang's secretary Xiao Gong came to see Mr. Jiang."
When Jiang Yan heard that his secretary came to see him, Jiang Yan immediately stood up and said to Mr. Xu: "Mr. Xu, let's discuss it again when we have a chance. I'll see what the secretary wants to do with me."
Seeing this, Mr. Xu couldn't help but keep holding on to Jiang Yan. Although he is full of curiosity for knowledge, he also understands what it means to go too far.
Jiang Yan had already talked to him enough today. To be able to spare so much time to talk to him was a great deal of care and respect. He couldn't be dissatisfied. Also, Mr. Xu felt that he needed to hurry up and digest the things he got today.
There are a lot of things here that I don't quite understand, so I have to give the higher-ups a quick look. If necessary, I can ask Mr. Lu to come over and discuss it with the experts from the Three Machinery Department to see the specific course of action.
In addition, the information and data he recorded today are too important. He has to find a safe place to send these information. If they are lost, he may be a sinner.
Also, he felt that today's events must be reported to the superior leaders in detail.
After Jiang Yan left the office, Mr. Xu thought about it, opened the safe, and took out an exquisite box with a password. After opening it, he read the note inside, picked up the red phone on the table, and followed the note. Dial the phone number.
After making the call, about an hour later, three military jeeps, carrying more than a dozen armed guards, picked up Mr. Xu and the information in his hand. They went directly to Shengjing Airport. The plane was already waiting there. After Mr. Xu got on the plane, the plane took off directly and flew towards Shengjing.
As soon as Minister Lu arrived at Shanhaiguan, the train stopped there. A soldier came up and found him. Then Minister Lu got off the train and got into the prepared car, which drove towards Sijiu City.
Chief Engineer Lu, who was far away in Rongcheng, received a call and explained his affairs. He followed the person who came to pick him up and hurried to Rongcheng Airport. There was a plane parked there, and most of the people on the plane were Aviation experts.
(End of chapter)
