Of course, Chen Geng couldn't admit it, so he simply said: "No!"

"Really not?" Mao Donghai looked at Chen Geng with a suspicious look. It would be fine if Chen Geng didn't refuse so simply, but Chen Geng refused so simply, Mao Donghai became suspicious. The cunning Mao Donghai immediately said with a smile on his face: "Brother, what's the relationship between us? Are you still hiding this kind of thing from me? Tell me, what are you going to do?"

"Really not?" Chen Geng couldn't tell Mao Donghai even if he was stupid. He said that we were going to study the tailless flying wing aerodynamic structure and corresponding flight control technology. He said with a firm look: "Mr. Mao, you don't think about it. Without the national financial support, coordination of policies and human resources, which company has the ability to develop an aircraft separately?"

This is true. Unless it is developed with a single-seater sports plane or a low-tech aircraft such as pesticide-sprayed agricultural aircraft, no aircraft can be played by one company alone. This requires the cooperation of dozens or hundreds of supporting companies, and there will definitely be news. If Runhua Industrial really wants to develop an aircraft by itself, it will be impossible for it to be without any news.

But the truth is that, Mao Donghai always felt something was wrong, and he asked again tentatively: "Really?"

"Why am I lying to you?"

"Then what do you want an expert in pneumatics?" Mao Donghai asked suspiciously: "Even if you want to make talent reserves for NK-8 motivation, you should be looking for talents in fluid mechanics and combustion, right?"

"Doesn't there be no need to study aerodynamics in aviation?" Chen Geng asked back.

"Uh... OK." Mao Donghai was speechless. Although the surface of the aviation motives was full of pipelines, in fact, this thing paid more attention to aerodynamics than that of the aircraft. As for what idea was Chen Geng's... Forget it, the fox's tail would eventually be revealed in the future.

However, since we talked about aviation motivation, Mao Donghai mentioned it by the way: "Give it a change to Hong-6. We will discuss a preliminary result now. Do you want to listen?"

"Oh? You said." Chen Geng nodded. He was also a little curious about the experts of West Aircraft to discuss what kind of results they would come up with.

"The preliminary discussion result is that the bypass ratio is best controlled at 1.4. On the basis of a slight increase in thrust, the fuel consumption must be reduced below O.7..."

"Mr. Mao, aren't you kidding?" Before Mao Donghai finished speaking, Chen Geng jumped up: "The bypass ratio of 1.6 cannot achieve cruising fuel consumption below O.7. Your bypass ratio of 1.4 requires fuel consumption below O.7. Well, you need to increase the thrust? Mr. Mao, your requirements are a bit too much."

"Mr. Chen, don't worry," Mao Donghai said with a smile: "You think it's difficult, but it doesn't mean that the Russians also think it's difficult. After all, the Russians developed the NK-8 in the early 60s, and it's almost over the years. I don't know how many technology has improved. Do you know the Tu-144-sound passenger plane that the Russians made?"

Although I don’t know why Mao Donghai suddenly jumped onto the Tu-144 sound passenger plane, Chen Geng nodded: "Of course, why don’t I know the two major sound passenger planes that are as famous as the Union Sound Aircraft? But what does this have to do with the NK-8 we want to improve?"

"If I tell you, the nk-144 motivation used on tu-144 is actually made some improvements based on the nk-8 motivation and added an afterburner?"

"Really or false?" Chen Geng was a little surprised: The motive of the Russian Tu-144 passenger plane was to make some minor changes based on the NK-8, and then add an afterburner. The Russian's system integration ability is too strong, right?

"It's amazing, right?" As if you know what Chen Geng was thinking, Mao Donghai nodded: "They have very few improvements, that is, they have changed the mechanical and hydraulic control system of nk-8 to simulated fly-by-wire. However, with such a small improvement, the fuel consumption of nk-144's unloaded after-force cruise has been reduced from o.79 to o.71. You must know that no matter it is nk-144 or nk-8, the bypass ratio of 1.o4 has not changed."

Speaking of this, Mao Donghai was also full of admiration for the Russians' ability: Russians' ability in system integration and optimization is indeed awesome.

Chen Geng was already stunned by the hearing!

What was the tu-144-sound passenger aircraft developed? It was officially put into service in the mid-1960s! It was true that Mao Donghai said that 2o years ago, the Russians just replaced the flight control system and reduced the cruising fuel consumption of the same motor from O.79 to O.71. Then, now 2o years have passed. If the flight control system is replaced from analog freight to digital freight, the bypass ratio is increased from 1.o4 to 1.4, and then re-optimized the combustion chamber, fans, compressors at all levels, etc., how much can the cruising fuel consumption of the nk-8 be reduced?

Chen Geng felt that there was too much, so he dared not say that at least the cruising fuel consumption of about O.68 is still guaranteed? The cruising fuel consumption of the D-KP-2 motor used by the H-6k several years later is only O.71, is it O.71 or O.72? I can't remember it, anyway, it's either O.71 or O.72.

After a long time, Chen Geng finally spoke: "What you mean is that for the Kuznetsov Design Bureau, it is not difficult to expand the bypass ratio of nk-8 from 1.o4 to 1.4, while reducing cruising fuel consumption, it is actually not difficult to increase the maximum thrust a little?"

"It's definitely not difficult!" Mao Donghai nodded affirmatively: "The motivation for nk-8 has great potential for improvement. According to our analysis, the thrust of around bypass ratio n, of course, if we want to reach this level, there will be more sacrifices in other aspects, especially the overall life span.

Speaking of the overall life span, I almost forgot that the overall life span of nk-8 is 6ooo hours. The life span of the improved motivation can be maintained at least at this level, and it can only be increased, not decreased."

Chen Geng heard it and felt the urge to curse: "Mr. Mao, do you really think that I was the one who runs the Kuznetsov Design Bureau. I can make any requests I want. The other party can only rack his brains and help me complete it with all his might?"

ps: Brothers, I’m sorry, this chapter only has 2ooo words. I owe you the 1ooo words, I will add it to you tomorrow. 8
Chapter completed!