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Spey engines use the second-generation control system, which belongs to the traditional hydromechanical control system. The realization of the engine control rule mainly relies on the cam space surface to complete, and the control accuracy is average. Although Spey's control system is very reliable, the control cam is more difficult to manufacture, and it also takes up the limited space of the engine, increasing the weight of the engine.

The full-authority digital electronic control system belongs to the third generation of control system, which is light in weight, occupies little space, and has extremely high control accuracy. It has great advantages over hydraulic mechanical control in terms of fuel consumption, reliability, and cost.

For example, in the hydraulically controlled engine, improper operation is easy to cause stall problems, the use of digital control system will be a good solution, when the aircraft just shows signs of stall, use the ability of the microprocessor to take immediate measures (such as adjusting the amount of deflation, fuel flow and guide vane angle, etc.) to eliminate the stall. Greatly improve the safety factor of the aircraft.

Li Yuanling naturally knew the advantages of the full-authority digital electronic control system in detail, and watched Liang Yuan stumble and sell off that poor knowledge of the engine control system with himself, he couldn't help laughing, pulled Liang Yuan over and rubbed Liang Yuan's hair and said with a smile: " Don't be embarrassed by your little knowledge, of course my mother knows that it is good to use a microprocessor as the core digital electronic control system, but you are talking about ordinary chips, the working temperature is at most about 100 degrees, and if you want to use the chip on an aero engine, the chip must be able to work stably in a high temperature environment of 300 degrees. ”

Liang Yuan Kabakaba said: "Anyway, my mother doesn't study aero engines now, and if you make a gas turbine for power generation, you can put the digital electronic control system far away from the engine." ”

Li Yuanling understood what Liang Yuan meant in a blink of an eye, mechanical control is not something that can be completed overnight, and it takes a long-term interview to test the car.

Li Yuanling thought about Liang Yuan's careful thinking and felt extremely interesting, thinking that a layman is a layman after all, Xiaoyuan thought that it was just a matter of changing the chip, how do you know that every millimeter of space on the aero engine is to be accurately calculated, and the change of each kilogram of weight involves a lot of calculations, and the electromagnetic environment on the aircraft is extremely harsh, even if the digital electronic control system is done on the ground, it is also a very difficult thing to integrate into the aircraft, but it is still valuable to use it in ship power or power generation.

Li Yuanling didn't dampen Liang Yuan's enthusiasm, but said with a smile: "Mom is waiting for the electronic engineer you dug up, but I heard your uncle say that you have been sneaky recently, and today you took the initiative to come to your mother to offer your courtesy, what the hell are you thinking?"

Liang Yuan just smiled, insisting that he was contributing to the power generation industry, and would never admit that he had any other thoughts.

The two chatted for a while about the gas turbine, and Liang Yuan knew that Li Yuanling had printed out the information sorted out some time ago and sent it to the entire project team, Li Yuanling proposed to re-determine the direction of research and development, re-modify the prototype in strict accordance with the drawings of Spey S_MA1, and prepare to rectify the structure of the project team and implement the chief engineer responsibility system.

Except for a very small number of young developers in the entire project team who expressed their support, most of the personnel of the 423 factory strongly opposed it, and Tao Yonghe, the deputy chief engineer of the project, and the professor-level senior engineer of the 423 factory, directly threw the information sorted out by Li Yuanling into the trash can in front of everyone, and denounced it as nonsense.

Professor Tao Yonghe said impassionedly: "The country has developed from a poor and white country to today, and it all depends on the collective wisdom and efforts of scientific and technological workers in scientific research. In terms of management, Li Yuanling's rectification and reform materials denied China's successful experience in scientific research since the founding of the People's Republic of China, and he also cowered to the extreme in academics, overemphasized and exaggerated the technical difficulties of foreign countries, dealt a blow to the innovative enthusiasm of scientific research workers, and was rigid and dogmatic in scientific research thinking. ”

These days, about half of the R&D personnel of the entire project team are strictly neutral and honestly watching the battle, and the remaining half is divided into two camps, arguing with each other, and the R&D work of gas turbines is completely paralyzed.

Wu Zhonghua is also a headache in the face of this situation, and arranging Li Yuanling to the position of the project leader is already the limit of Wu Zhonghua's ability.

In the face of the opposition of a large number of project team veterans led by the technicians of the 423 factory, Wu Zhonghua could only temporarily stop Li Yuanling's work and hurriedly came to Shengjing from Beiping to re-serve as the chief engineer of the project.

Since the contradiction between Li Yuanling and the 423 factory has been superficial, and the scientific research work has been completely stopped, Wu Zhonghua has been working hard recently, hoping to restore the actual development and research and development of the gas turbine first, but unfortunately the effect is not great.

Li Yuanling didn't talk to Liang Yuan about these bullshit things, but simply said that she no longer leads the gas turbine project team at present, and she will have free time to cook dinner for Liang Yuan and the two little girls in the future.

Liang Yuan rolled his eyes, combined with the memories of his previous life, and made up the matter ** not far from ten, thinking about it, it was impossible for the old lady to wipe off her face and say to herself: Xiaoyuan, take 10 million for your mother, and your mother will study the gas turbine. I still have to take the initiative to dig a pit by myself.

"Mom, when I helped Factory 257 design air conditioning fans in the first half of the year, I recognized a new teacher, who worked in Lanzhou Chemical Plant and was the chief engineer of Lanzhou Chemical Plant" Liang Yuan decided to plant the matter on Chu Huifen's head first.

"During this time, the sales of air conditioning fans in the 257 factory have increased significantly, this year to break through one million units should be no problem, large vertical air conditioning fans and small air conditioning fans on average, each air conditioning fan to use ABS plastic at least about 4 kilograms, this alone requires 4,000 tons of ABS plastic, and the annual output of ABS plastic in Lanzhou Chemical Plant is only 10,000 tons, some time ago Mr. Chu called and said that Lanzhou Chemical Plant has begun to prepare for the expansion of ABS, otherwise next year, the amount of ABS in a single air conditioning fan, Lanzhou Chemical Plant may not be able to supply。 ”

The raw material of ABS plastic is derived from petroleum, and the oil is separated from ethylene and propylene by a large-scale pyrolysis unit, and then processed by blending and grafting through a specific device to obtain ABS raw materials.

Petrochemical enterprises need a large number of heating furnaces in the production process, usually the temperature required for heating medium is between 150 and 500 degrees, and the exhaust gas exhaust temperature of the gas turbine is as high as 550 degrees, which is an ideal heat source for various heating furnaces, and the cracking process of petroleum is usually completed in the case of medium and high pressure, so the core of the equipment of various ethylene equipment is the ethylene compressor, and the gas turbine can provide electricity for the driving engine of various ethylene and propylene compressors.

Generally speaking, a gas turbine can save at least three to four million yuan in electricity and fuel costs for petrochemical enterprises every year.

Mr. Chu said that the Lanzhou Chemical Plant expanded production this time, and planned to introduce gas turbines to do electricity and heat linkage with the device production line, but unfortunately the foreign asking price was too high, and the opening price of each unit was about 30 million yuan. ”

Li Yuanling was so interested when she heard Liang Yuan say so much, she straightened up and asked, "Xiaoyuan, does your Teacher Chu have any plans to use domestic equipment?" ”

"I don't know, I have to know if my mother can produce a qualified gas turbine here. Liang Yuan grabbed his hair, and said innocently Li Yuanling lowered her head, her mind turned quickly, although there were many problems with the gas turbine unit of the 909 Institute, but the entire project team was not nothing, the project team had accumulated a large number of first-hand numbers in these years of intermittent practice, Li Yuanling had studied and tested for a long time, and was already very familiar with the performance of the entire unit, and the problems and general solutions of the unit were already well known.

In Li Yuanling's view, it is easy to modify some presumptuous numbers, replace some parts that have not been scientifically verified, and produce according to the design of the original factory, so as to reach 90% of the power level of the original gas turbine in a short time. If there is a year to rectify, Li Yuanling is confident that the domestic unit will reach the power level of the original factory, of course, some core components still need to be imported for the time being.

Raising her head, Li Yuanling said a little hurriedly: "Xiaoyuan, another day, you can ask your teacher Chu, if the domestic gas turbine unit can reduce the cost to about 20 million yuan, can they consider switching to domestic equipment." ”

Liang Yuan was a little amused when he heard the old lady set such a price, the cost of the 909 gas turbine unit was around 10 million yuan, and the old lady set the price at around 20 million yuan, obviously not wanting to take advantage of herself, and planned to sell one to make a profit, which was equivalent to borrowing her own money to turn over.

Liang Yuan couldn't help but smile and said: "Teacher Chu will go to Benxi on Monday, and I will ask her when the time comes, to see if it is possible to switch to domestic equipment." However, it was still a bit difficult to seamlessly connect the gas turbine unit to the entire production line, so I had to send the newly recruited electronics engineer with me. ”

Li Yuanling looked at Liang Yuan's thoughts about the engine's digital electronic control system, and said funny: "Whatever you want, as long as this project can be won, you can toss as much as you want." ”

Liang Yuan, who let go of his worries, chatted with Li Yuanling, and after a while, the two Loli who finished their homework also came to the living room. The two little girls chirped around Li Yuanling and talked about the trivial things that had happened these days, Liang Yuan listened to it on the side in fear, for fear that Ning Wanfei would accidentally leak out that she had "menopausal syndrome", until Ning Wanfei knew Liang Yuan's intentions, watched Liang Yuan twist around on the sofa, shook her pink little hands proudly, and made a "I won't say" mouth shape while Li Yuanling was not paying attention. Liang Yuan, who breathed a sigh of relief, hurriedly offered snacks and boiled water before lying on the sofa and listening to the three women chatting.

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