Lin Hongfei is actually very able to understand the Soloviev Design Bureau's approach, but understanding is one thing. Whether he will cooperate with him to do this is another thing... An ordinary worker hopes that his boss has a billion-dollar boss will share even one percent of his worth to him. The boss can really understand the idea of ​​a worker, but will the boss give one percent of his property to this worker? Obviously not.

Therefore, it was not surprising that when the Solovyov Design Bureau took out his plan with great enthusiasm, Lin Hongfei took a look and threw it aside with disgust.

"Mr. Lin, what do you mean?" Pilm's face turned red. Lin Hongfei's movements did not hide his disdain at all. If it weren't for the Solovyov Design Bureau that really needed the money, he would have punched Lin Hongfei's handsome face.

"It's nothing, I just think Mr. Pierm's requirements are not realistic at all... Let's see what conditions you have put forward," he pointed to the document, as if the conditions were written on the cover of the document. "We must consider licensing the technology of the d-30-2 engine to my company after purchasing 300 D-30-2 engines. Haha, what level does the technical level of the d-30-2 need me to say? After 300 units, we still need to negotiate. According to your agreement, if you do not agree at that time, I can only buy your engine... Mr. Pierm, shouldn't you doubt my IQ? Think I am a fool?"

Facing the aggressive Pilm, Lin Hongfei was a little annoyed: He felt that his IQ was underestimated. Damn, do I just look so much like a fool?

Pilm also knew that his requirements were a bit outrageous. As the first generation of D-30 engine that had been eliminated by the Soloviev Design Bureau, it was indeed a bit outrageous to sell the scrap product at a gold price, but he had a reason to give in. He strongly argued, "D-30-2 is a great civilian turbofan engine. This turbofan engine with a maximum thrust of 6,800 kilograms cannot be produced in your country. Of course, we won't talk about this, what I want to say is. Just two of these engines are needed.

It is easy to send a 50-ton take-off aircraft to the blue sky, which also ensures that the aircraft is cruising at a high altitude at a speed of more than 850 kilometers. If the overall aerodynamic layout of the aircraft is designed reasonably, it is even possible to reach a cruising speed of 900 kilometers. The most important thing is that it is cheap enough, only $1.3 million per unit. It is only one-third of the price of similar thrust engines in the international category, but the overhaul time is 3,000 hours. I think this is the engine that suits your requirements best."

"Mr. Pilm, do you really think I'm stupid?"

Lin Hongfei looked at the head of the Solovyov Design Bureau and suddenly laughed, "That's right. d-30-2 is very cheap. My country does not produce the same type of engine, but you should know that what I want is a commercial turbofan engine. The design requirements of modern commercial aviation engines are to improve the reliability and safety of the engine. Extend the engine's service life as much as possible and effectively reduce maintenance costs. It doesn't matter if the engine is priced higher."

"I have a good reason to believe Alexei. Tupolev has told you about our improvement requirements for the Tu-134 aircraft. Of course, I don't care. I believe what he said to you. My goal is to transform the Tu-134 aircraft into an aircraft that can be comparable to the Boeing-737 and Airbus a320, and to improve a aircraft designed in the 1960s and now discontinued production into an aircraft that can be comparable to the Boeing-737 and Airbus a320. You must have been surprised at the time, right? But he said it right, that's the truth."

Pilm was really surprised and widened his eyes: he finally believed it now. Before that, he thought his old friend was joking with him.

"Mr. Pilm, you should understand now. As merchants, especially aviation practitioners, they actually do not care much about the initial procurement costs of the engine and the entire aircraft, but about the maintenance costs of the engine and the entire aircraft during the entire service life... We all know that during the entire use of this aircraft, the maintenance costs are several times or even dozens of times the procurement costs of the entire aircraft and the engine. It doesn't matter if the cost of later use is low, it will greatly reduce the overall cost within the entire service life. Whether the engine's wing time can be extended enough, that is, the cost of flight hours is equivalent to making the airline make more money. This is what airlines are interested in."

"The purchase price of the CFM56-3BC engine used by Boeing 737 is US$3.9 million per unit, which is indeed three times that of D-30-2. The general overhaul cost is US$1 million to US$1.1 million, which is indeed similar to D-30-2... If you remember correctly, the provision of the D-30-2 engine is that it must be returned to the factory for repair after 3,000 flight hours. The repair cost is about US$1 million. Am I right?"

Pilm's heart began to sink constantly, and he found that he underestimated this young man from the Republic: his understanding of aircraft engines was far beyond his expectations. But at this time, he had no way out and argued, "Yes, it's true, but in this way, the overall use cost is still our D-30, right?"

"wrong!"

Lin Hongfei refuted Pilm's words without hesitation, "Mr. Pierm, believe me, I know more about the development trends of international aircraft engines than you think. The cfm56-3BC engine installed in the 737-300400500 series aircraft that Boeing has successively put into the market since the mid-1980s has begun to be used to maintain it appropriately."

"Through appropriate maintenance methods, CFM International can ensure that the engine is effectively used for at least 20,000 hours before overhauling. When the engine is used for a long time, monitoring measures can be strengthened. As long as there is no problem while ensuring sufficient EGT margin, it can also be extended in the wing time and save the engine's overhaul hourly cost."

"But do you have appropriate maintenance measures for your D-30-2 engine? No, probably the entire D-30 series engine does not have appropriate maintenance measures? Anyway, I have never listened to your publicity."

"Your D-30-2 only has 3,000 flight hours, which means if I use the cfm56-3bc engine, from the beginning to the first overhaul of the engine, it will cost about $500 in total; your D-30-2 will require 7 overhauls during this period, spending about $7 million, and there will be another purchase cost of $1.3 million, which is $8.3 million... This is not considered because of these 7 overhauls.

The losses caused to airlines, including these, compared with cfm56-3bc, your d-30-2 will cost at least 6 million US dollars more than the cfm56-3bc in the first 20,000 hours, and the second 20,000 hours will cost at least 6 million US dollars more. Until these two engines are completely scrapped, the d-30-2 engine will cost at least 20 times higher than the cfm56-3bc engine.”

The appropriate maintenance of the engine is relative to regular maintenance. Pilm naturally knows that the principle is quite simple. The so-called appropriate maintenance of the engine means that the engine is no longer rigidly stipulated indicators such as the overhaul interval of the engine. In addition to those fixed-life parts that have reached their service life, no matter what the situation is, other components can be regarded as life limits. For specific parts that need to be maintained, the health status of the engine is monitored through certain monitoring means. Monitoring means include monitoring the engine egt, vib, ff, etc. with special engine monitoring software. In addition, real-time collection of engine magnetic blockage, hole detection, fuel consumption, etc. is also necessary to determine the real-time condition of the engine and make maintenance plans and repair plans in a timely manner.

If appropriate maintenance is not adopted, in order to ensure safety, a hard time limit for engine overhaul must be formulated, and this hard time limit must be certainly less than the actual wing time of the engine, which will inevitably increase the overhaul cost.

It sounds simple, but it is not easy to do. It can be said that the appropriate maintenance of the engine is the most technical technology for aircraft engine development at this stage. Russia naturally envys this technology, but unfortunately, Russia does not. The Soloviev Design Bureau wants to develop its own appropriate maintenance methods, but they have no money.

Of course, even so, Mao Xiong is still much better than the Republic's aviation engines. At least their aircraft engine overhaul is long enough, but at this stage, the Republic's aviation engine overhaul... Ahem, the total life span is not two that can reach 800 hours.

This is indeed a bit unbearable: In the field of world aero engines, the Soviet-class engines are second-rate in the world, but the Republic can only be considered third-rate in the world, and it is the wave that can finally make its own aircraft engines.

Lin Hongfei looked at Pilm with a sympathetic look, "Now I finally understand why your Russian planes can't buy Europe and the Soviet Union. One plane needs at least 2 engines. The high cost of using your engines... Americans and Europeans are indeed not stupid."

Pilm's face was as dead as if he was: he really didn't expect that Lin Hongfei's understanding of his engine and American engines had reached such a depth. To be continued. If you like this work, you are welcome to Qidian (. voting for recommendations, monthly votes, and your support is my greatest motivation. Mobile phone users please go to m.. to read.)
Chapter completed!