"Chiefs, Yonghan Aviation Power Technology Co., Ltd. has completed the design drawings of the turbofan engine with 3000 kg thrust, and is now working on trial production before assembly, and the second half of the year will begin to do the pre-flight specified experiments and full-airspace high-altitude platform performance experiments, and the experiment can be completed in the second half of next year, as long as it passes the 300-hour test run, the first flight can be carried out. ”

Yang Jie replied.

"Why are you working so fast?" asked a military chief, surprised.

"Hehe, we found an expert from Ukraine who has rich experience in the design and development of small and medium-sized turbofan engines, and we also found several experts with experience in design, development and production from Rolls-Royce and Honeywell. ”

"It is a great honor that we recruited this technical expert from Ukraine to participate in the design, research and production of a core machine in Ukraine before, and it was produced and verified that year, but then this project was canceled, a large part of the technical staff were lost, and the Ukrainian side has no plans to continue research and development, so we directly improved the core machine program, and the core machine program is very mature, so the design speed is very fast. ”

"In addition, from the very beginning, I asked the technical staff of Yonghan Aviation Power Technology Company to make sure that the three most important parts of the aero engine core engine, the high-pressure compressor, the combustion chamber and the high-pressure turbine, must be produced by themselves, and the other components must be customized and purchased from manufacturers in the global supply chain. ”

Liu Fuping, who entered Yonghan Aviation Power Technology Co., Ltd., controls the professional skills of Jianzhen in powder metallurgy skills, and solves the difficulties in the preparation and processing of high-pressure turbine discs, high-pressure compressor blades and fasteners nickel-based superalloys.

This is very important, because the design of the core engine is directly related to the performance of the engine, and the three components of the high-pressure compressor, combustion chamber and high-pressure turbine are very important and indispensable.

If the aerodynamic design of the high-pressure compressor is not good, it is very easy to cause the problem of engine surge, at the beginning of the design, it is necessary to have a very careful calculation of the air compression ratio and the intake air flow, and the shape design of the blade is also very particular.

The flame cylinder design of the combustion chamber is the top priority, the engine is not the same fuel supply method under different working conditions, using an annular combustion chamber with 20 pneumatic nozzles and 2 ignition nozzles, and the flame cylinder adopts a belt, that is, a floating wall flame cylinder structure, which is the structure adopted by Constantine in the core machine project to participate, before the core machine passed the 30-hour test run, the core machine is running normally, Constantine then took this structural design and used it in this core machine.

However, the design performance of this combustion chamber will not be known until the engine assembly is completed after the cycle durability test is completed.

The high and low pressure turbines use different materials, and the efficiency of the cooling system is not high, which will also affect the life of the turbine, which is a great test of the designer's skills and the company's technical strength in material preparation and processing.

The difficulty of designing, developing, and producing the core machine can be imagined, and all the countries that can design, produce and manufacture aero engines on the Blue Star can be counted on one hand, and Yang Jie's entry into the field of aero engines is also due to the fact that he has obtained top talents such as Konstantin and Wang Yonglin to officially enter this field.

"In other words, this core machine of yours has independent intellectual property rights?" asked Liu Jianqing excitedly.

"Yes. Yang Jie nodded.

"Last time, you and Huo Xiaotian got the technical materials from the Sapphire Design Bureau have a very big sponsorship effect on the design of domestic military fighters and transport aircraft, and the design plan of the engine is also a warning of these materials, but now it is stuck in the material process and process, if you can overcome the technical difficulties in this area in advance, the center can give you the engine project project. Zhu Ronghua said.

"Thank you for your support!" Yang Jie said excitedly.

Although Huaxia lacks experience in the production of commercial engines, it has never stopped in the production of military aero engines, has a relatively complete aero engine production system, has produced more than 60,000 aero engines, and its products cover turbojet, turbofan, turboshaft, turboprop, piston all kinds of military aero engines, with West Airlines, Liming, Liyang, The four major aviation engine manufacturers in the south, and these companies participated in the supply chain system of foreign commercial aero engines very early after the reform and opening up, and have a lot of rich experience in the production and processing of engine parts.

Especially in recent years, the country has increased a large investment in aerospace, many aviation production enterprises have obvious technological transformation performance, and the equipment of some production workshops is not worse than that of foreign OEM manufacturers, and now a large number of engine parts are also OEM for Rolls-Royce, GE and CFM.

At present, at least more than half of the engine parts of these aviation giants are made in China, and Yonghan Aviation Power Technology Co., Ltd. also takes the design drawings to directly purchase customized parts from these companies, which also greatly accelerates the research and development speed of aero engines.

"Your progress is really fast, tomorrow you accompany me to your Yonghan Aviation Power Technology Company, I want to test how far you have achieved on the spot. Liu Jianqing said.

Yang Jie was also stunned.

"What, there's a problem?"

"No, I'm just a little worried about your figure......"

Liu Jianqing waved his hand and said: "My figure is very good, you don't have to worry! If you can produce a very good turbofan engine this time, I will be more excited than anything else!"

Seeing that Liu Lao was so old and so eager for the cause of national defense, Yang Jie was also extremely admiring in his heart, and then said: "Liu Lao, then tomorrow you will take my private jet to Tanzhou City together." ”

Liu Jianqing nodded.

At noon in Vietnam, Yang Jie accompanied Liu Jianqing, Zhang Kelong and a military expert group to the production workshop of Yonghan Aviation Power Technology Company.

After Liu Jianqing entered the workshop, he saw that the technical staff was vigilantly ground, and the blank of the flame tube was hoisted up by the overhead crane and sent to the large CNC lathe.

"These CNC lathes are all produced by themselves?" Liu Jianqing asked Yang Jie beside him.

"Yes, the rough machining and semi-finishing CNC lathes used in the workshop are supplied by Chenguang Machinery Factory, and the high-precision CNC lathes are supplied by the Machine Tool Research Institute. Yang Jie said.

Liu Jianqing smiled and nodded: "It's a mule or a horse, just pull it out and you'll know." ”

Yang Jie smiled.

"It's a stupid part. Liu Jianqing looked at the flame cylinder blank that was being hoisted and said.

"Liu Lao, this flame cylinder is a high-temperature alloy, and the density is slightly larger than that of ordinary steel. Wang Yonglin explained.

Liu Jianqing nodded.

The technical staff who operate the roughing CNC machine is doing the initial roughing, and the bed body of the CNC lathe is quickly filled with metal chips from the superalloy cut from the blank parts.

"I heard that this part is very difficult to process, I don't think it's very good, I see that you are very smooth in processing. ”

Liu Jianqing said.

"Liu Lao, the difficulty of the processing of this flame cylinder is in the finishing, the parts are now very tough, and in the back, the parts are getting thinner and thinner, the workpiece is deformed very much, and the parts are often scrapped. ”

An expert in aero engine manufacturing said.

"Yes, now the technical experts in our four aero engine production workshops have not solved the problem of processing deformation of this part, and the scrap rate is too high. ”

Zhang Kelong said.

Reborn University Tyrant Latest Chapter 505 Turbofan Engine!Website: