Although Chen Geng was very impressed by the RB199 engine, he didn't think much about it, so he politely rejected the suggestions put forward by those guys who saw others eating meat.

The reason is simple, the technology of RB199 is indeed very advanced, but why use it yourself?

It's just that, in the face of Chen Geng's refusal, those guys who didn't get benefits from Chen Geng before refused to do it: Why can't we even drink soup when others eat meat?

For a while, Chen Geng was quite anxious by some people.

Just when Chen Geng was in a hurry, far away in China, a meeting with far-reaching significance on a certain strategic equipment of our country was also underway......

"After the calculation of our expert group, if the two turbojet 8 engines on the H6 are replaced with four 'tay' MK650 engines produced by COMAC, the total thrust of the whole machine will be increased from the current 9500 kg * 2 to 6450 kg * 4, and the thrust will increase by a full 6580 kg;

Secondly, the total weight of the four 'tay' MK650-8C engines is 1,350 kg lower than that of the two turbojet 8 engines, which also means that the H6 aircraft will lose 1,350 kg in an instant.

Thirdly, according to the data provided to us by COMAC for the 'tay' MK650-8C engine, the fuel consumption rate of this engine is between 0.51kg/(daN·h) and 0.72kg/(daN·h), which is significantly lower than the fuel consumption rate of the turbojet 8 engine of 1.02, which means that the range of the aircraft will be increased by at least 40% under the premise of the same fuel load.

Taking the H6C model that has just been delivered to the troops in 81 as an example, the maximum range of the H6C is 5730 kilometers, an increase of 40%, and the maximum range can reach 8000 kilometers, and if the weight reduction factor of the whole aircraft is taken into account, the maximum range is expected to reach 8300 kilometers.

If it is the H6D that we are undergoing technical appraisal, the maximum range is expected to exceed 6,500 kilometers by replacing the 'tay' MK650-8C engine, which will greatly enhance the comprehensive combat strength, cruising time and flexibility of the model.

According to our calculations, in the typical combat mode of 1000 kilometers of combat radius and continuous hovering in the air for 2 hours, the air tanker modified with H6 can only provide about 18 tons of air refueling capacity, but if the engine is replaced with 'tay' MK650-8C, the air refueling capacity of the H6 air tanker is expected to be increased to 22 tons in the same combat mode;

If the previous No. 2 H6I scheme (H6 demonstrator equipped with 'Spey' MK512-5W civil turbofan engine, 4 Spey engines for wing cranes) is adopted, the original turbojet 8 engine compartment and air intake are converted into fuel tanks, and the maximum aerial refueling capacity is even expected to be increased to 30 tons......"

With the introduction of the expert group, all the members of the entire leadership team of Xifei also had serious faces, and kept writing and drawing on the paper, recording the key points they thought they had.

After 78 years of reform and opening up, Huaxia began to carry out a difficult economic strategic transformation, many military enterprises, military units of the life of a sad time, but Xifei is different, as one of the important pillar enterprises of China's national defense strategic security, although Xifei has also been affected to a certain extent, but it is a national key guarantee of national defense science and technology units, the most obvious example is: Xifei to Yun-7 and H6, the improvement of the two aircraft of the People's Army has never stopped.

Yun Qi will not talk about it, just talk about H6:

The improvement of the H6 armor that can throw nuclear bombs is in full swing (this H6 armor is not the H6 armor that carried out the nuclear test bomb delivery mission in the 60s, the H6 armor that carried out the nuclear test bomb delivery mission in the 60s is modified from the Tu 16 of the Soviet Union, and this H6 armor is the nuclear bomb delivery model of the H6 produced by Xifei), and the state focuses on guaranteeing the required funds;

HG6 (bombing jamming), which first flew in 1980, completed technical appraisal and was delivered to the Air Force at the end of last year;

H6C, the first flight was successful in March 1981, and the first batch of H6C aircraft was delivered to the troops in July of the same year;

H6D, China's first air-to-ship missile-based aircraft, the first aircraft completed the final assembly in June 1981, completed the first flight in August, and was transferred to the Air Force for test flight trials in October, after that, according to a series of problems exposed by the first H6D, a series of improvements and upgrades were made to the second H6D, and the final assembly was completed in August last year, and the first flight was completed the following month.

HU6, in view of the fact that in the late seventies and early eighties, air tankers played a huge role in a number of famous air battles, the Chinese Air Force, which has been tracking and studying this very carefully, realized that we should also develop our own air tankers, and in September 81, the development of air tankers was officially included in the "Seventh Five-Year Plan" period of the Air Force weapons and equipment development plan, and the West Flying Plant carried out pre-research and program demonstration work at the end of last year......

All of this proves that even in the most difficult era of the Republic's economic transformation, Xifei, as the cornerstone of the Republic's national defense, has been given key guarantees and care for its scientific research activities, and the reason why He Kai dared to fight Chen Geng's "tay" MK650-8C idea is also because of the confidence it brings.

"Okay, thank you for the introduction of the expert group," After the introduction of the expert group stopped, He Kai finally spoke: "Now if you have anything to say, just say what you want." ”

"I'll come first," As soon as He Kai's voice fell, Liu Wei, director of Xifei Engine Factory, was the first to speak, as a directly affected person, he took the lead: "Factory director, I personally resolutely oppose the use of COMAC engines. ”

"Oh?" He Kai was a little unhappy, he thought that there would be opposition, but he didn't expect the opposition to be so fierce: "Why?"

"Because the MK650 engine belongs to the COMAC Group, and the boss of the COMAC Group is Chen Geng, an American," Liu Wei's reason is particularly strong: "Although the technical parameters of the MK650 engine look very good, we must keep one thing in mind: if our new H6 uses the American engine, then our enemy can calculate the performance of our aircraft based on this......

"Comrade Liu Wei, you don't have to give me a hat!" Before Liu Wei finished speaking, He Kai's face had already darkened: "Because the MK650 is produced by Chen Geng, an American, our H6 resolutely cannot use this engine? Don't tell me that you don't know that our country has more than half of the shares in the COMAC!"

Afraid that others will know the performance of our planes? Our country is also preparing to import F5, F14, and F16 fighters from the United States, and is now inspecting the French Mirage fighters; if it is according to you, it will be even more unsafe and should not be introduced! What kind of national security, don't think that I don't know what you think, is it not as smart as you Liu Wei? Aren't you just worried that your engine factory will be affected?"

Liu Wei's face suddenly turned red and white, and he was speechless for a while.

Yes, Liu Wei's reason does seem to have a little truth at first glance, but after careful analysis, it is actually untenable: because the "tay" MK650-8C engine was produced by Chen Geng, an American, it cannot be introduced? What kind of bullshit logic, we Huaxia have more than half of the shares in COMAC, so what is there to worry about?

Moreover, since we dare to buy American planes, we don't have to worry about the Americans and the French, who know the performance of the planes well, and we don't have to worry about the engines we bought from Chen Geng?

Bullshit!

Everything is just the interests of the department, the Xifei Engine Plant is the engine of the H6 bomber: the production unit of the turbojet 8, if the H6 is replaced by the "tay" MK650-8C engine produced by the Commercial Aviation Group, what will happen to the Xifei Engine Factory? This is a living leg cut off.

But Liu Wei is not without allies, another deputy director helped to say: "Lao He, although Lao Liu's words are biased, but from another point of view, it is not unreasonable, when we used the 'Spey' MK512-5W engine to do the H6I project, the overall performance of the aircraft is indeed very good, but the four imported 'Spey' engines are more expensive than the ex-factory price of our H6 aircraft, and the engine not only needs to spend precious foreign exchange to buy, the supply of spare parts is also a trouble......

"Lao Zheng, what you said is not right," without waiting for Deputy Director Zheng to finish speaking, He Kai smiled, and he lit a cigarette: "Why did the H6I project fail back then, what you said is right, but COMAC Group is now in China, we only need to spend RMB to buy engines from COMAC."

As for the price, I have also communicated with Mr. Chen Geng, it is certain that it is more expensive than our turbojet 8, but it is definitely much cheaper than the British origin 'Spey' MK512 and 'tay' MK650, and most importantly, you don't need to apply for valuable foreign exchange ...... to buy their engines."

Seeing that the situation was a little stiff, Xie Weiping, the party secretary who is best at ideological work, opened his mouth with a smile: "Lao He, Lao He, don't be so excited, huh...... Let's put the engine thing aside for the time being,...... Lao Xu, you are the chief designer of the H6, if the new aircraft uses four MK650 engines, the center of gravity of the aircraft will be completely changed, and the overall aerodynamic layout and center of gravity of the aircraft will be redesigned.

The turbojet 8 engine used in H6 is 5.31 meters long, 1.4 meters in diameter, and weighs 3100 kilograms, and the diameter of the "tay" MK650 engine is 1.143 meters, the length is only 2.9 meters, and the weight is more than 1400 kilograms.

"This, because of the previous experience in designing and modifying H6I, we are confident in the technology, as for the overall aerodynamic shape, we have preliminarily designed three aerodynamic shapes," Chief Engineer Xu pushed the glasses and said: " One is to basically keep the current aerodynamic layout unchanged, but from the current wing root engine compartment to install a single engine to install two engines; one is similar to the Boeing 707 wing crane four engines; the other is similar to the American B52 bombing wing crane engine mode, the two engines are a group, each wing is provided with a suspension point. ”

As he spoke, Chief Engineer Xu opened his folder: "This is the rendering we made, you can take a look." ”

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PS: Brothers, I'm very, very sorry, originally this chapter was going to write 4000 words, but it took too much time to check the information, this chapter is only 3000 words, and please forgive me, brothers.