"Do you have a working L-39 in your design bureau?" Chen Geng asked Yuri Kravchenko, "Can you let your pilots take me around?"

What?

Do you want to fly around the sky?

Yuri Kravchenko immediately looked at Alexander Kholmdorov: he can't do such a thing.

Alexander Kholmdorov also became numb: Yuri Kravchenko can't call the shots, can he be a KGB agent? This master in front of him is a master who can talk to the president and vice president of the United States.

Alexander Kholmdorov said with a look of embarrassment: "This...... This one...... Mr. Fernández ......"

Although Alexander Holmdorov was vague, Chen Geng immediately understood: "In this case, you can help me ask first." ”

Alexander Holmdorov breathed a sigh of relief and quickly nodded: "Okay." ”

"Also, please ask me if I can buy an L-39. ”

"Buy...... Buy one?"

Not only Alexander Kholmdorov, but also the people in the Ivchenko Design Bureau on the side unconsciously opened their mouths: are American billionaires so capricious?

"Well, I like this plane very much, and I hope to be able to buy one for my collection," Chen Geng nodded: "You can dismantle the sensitive military equipment on the plane, but the plane must be able to fly and use normally." ”

If it is an L-39 trainer with dismantled military systems and equipment...... Alexander Holmdorov thinks that this is still unlikely, although the L-39 is only a trainer aircraft, and the level of secrecy cannot be compared with the main fighter of the Soviet Air Force such as the MiG-29, but this is also the main air force equipment of the Soviet Air Force and even the entire Warsaw Pact organization.

But he was still a little curious, and couldn't help but ask Chen Geng: "Mr. Fernandez, can I ask, what are you going to do when you buy this plane? Your private jet is so luxurious......

"Of course, it's used for collection and play," Chen Geng said as a matter of course: "If you have an elongated Cadillac RV, can't you buy another sports car to play with?"

“......”

Alexander Holmdorov was speechless.

Yuri Kravchenko and his colleagues were also speechless.

Buy a jet trainer with dismantled military sensitive equipment, just to play?!

Is...... It's nice to be rich, you can be so capricious.

Chen Geng, on the other hand, felt quite hopeful about whether the Soviet Union was willing to sell the L-39 to himself.

The reason why I think so is because the L-39 trainer aircraft, as the most widely used mid-to-high-end subsonic jet trainer in the Warsaw Pact, is the lowest level of secrecy among all the air force flight equipment in the Warsaw Pact, and the West obtained several complete L-39 trainers through some channels as early as the end of the 70s.

Maybe you will talk about the AI-25 twin-rotor turbofan engine on the L-39 trainer aircraft, but the secrecy level of this engine is actually not so high, the reason why I say this is first of all because the maximum thrust of the AI-25 turbofan engine is only 16.7 kN (1723.65 kg), except for the L-39, no Soviet Union or Warsaw Pact main fighter uses this engine, because the thrust of this engine is too small, and it cannot meet the requirements of the fighter at all - The MiG-21 is such a light fighter, and the P-13 turbojet engine it is equipped with has a maximum thrust of 5,100 kilograms and a thrust of more than 1,700 kilograms without afterburner.

Because it was specially approved by the Central Committee of the Soviet Union, it was said to be confidential, but the Ivchenko Design Bureau opened the door to Chen Geng in almost all departments, and Chen Geng was also able to see the mystery of the Ivchenko Design Bureau, the most bullish aircraft engine design bureau in the Soviet Union, for example, when visiting the D-18T engine, Yuri Kravchenko couldn't help but show off to Chen Geng: " We, the Ivchenko Design Bureau, are the fourth unit in the world to have mastered a turbofan engine with a thrust of more than 200 kN, and before that, only General Electric and Pratt Whitney in the United States and Rolls-Royce in the United Kingdom were able to design engines of this level of thrust. ”

Chen Geng nodded again and again: "It is indeed very remarkable, and being able to make the D-18T is enough to prove that the Soviet aviation industry is the world's first-class." ”

Everyone loves to listen to good words, and Yuri Kravchenko, who accompanied him, and other accompanying personnel of the Ivchenko Design Bureau suddenly showed a smug smile.

It was Kelly Hicks who suddenly spoke: "However, there are now half more enterprises that can produce thrust engines of more than 200 kN. ”

"Half more?" Yuri Kravchenko looked at Kelly Hicks in surprise and couldn't help asking, "Beautiful lady, what do you mean by that?"

"It's not interesting," Kelly Hicks doesn't know what modesty means, "just after General Electric, Pratt Whitney, Rolls-Royce, and your Yvchenko/Zaporosh Progressive Machine Building Bureau, we have to add the name of our COMAC." ”

“......”

Fernandez Chen has an enterprise in Huaxia called Huaxia Commercial Aircraft Manufacturing Group, which is already in the possession of the Soviet government, and has sent this information to these design bureaus and manufacturing bureaus that Chen Geng is going to visit on his trip long before Chen Geng left Moscow, but the question is, why add the name of COMAC Group, and why half of it?

A group of old hairy people couldn't help but look at each other, unable to understand.

"Because a few years ago, when boss introduced the technology of the 'tay' MK650 engine from Rolls-Royce in the United Kingdom, it also introduced the trap technology and patent of the Rolls-Royce RB211 engine," Kelly Hicks shrugged: "Now, our COMAC Group can not only mass-produce the 'tay' MK650 engine and two new improved models, but the digestion and absorption of the RB211 engine is also steadily advancing." ”

In other words, since we already have a full set of technology and patents for the RB211 engine, although we can't produce this engine yet, we are half fine, right?

And such a thing?!

Not only Yuri Kravchenko, but Alexander Holmdorov couldn't help but look at Chen Geng in surprise: It's amazing, Huaxia Commercial Aircraft Manufacturing Group, which originally thought that it could only produce Fokker F100 and "tay" MK650-8C engines, still holds a full set of all the technology and patents of the British Rolls-Royce RB211 engine?

Yuri Kravchenko tentatively asked Chen Geng: "Mr. Fernandez, all the technologies and patents that Ms. Kelly said...... Does it include the complete means of production?"

Chen Geng glared at Kelly Hicks, as if to blame her for being too talkative, and then turned back and said vaguely to Yuri Kravchenko: "It's the standard product introduction process." ”

That's right......

Yuri Kravchenko and his colleagues looked at each other, and each understood the excitement in each other's eyes.

Why the bother?

This starts with the Soviet Union's habit of developing aero engines.

The Soviet aviation industry and the European and American aviation industry are two completely different industrial research and development ideas, the European and American aviation industry because of the military and civilian reasons, for the life of the engine, the first turnover period and other related to the economic quality assurance is very important, that the longer the life of the engine, the better, under this guiding idea, the life of European aero engines, especially civil aviation engines, continues to increase, such as RB211, has increased from 3,000 hours of life when it was just successfully developed to 10,000 hours now;

The Soviet Union, on the other hand, was different from the fact that the Soviet military industry, which served the military industry throughout the country and was always ready to fight and fight, believed after accurate calculations that in wartime, a military combat aircraft would only have a life span of several dozen hours at most, so there was no need to develop fighter jets and aero engines with a long lifespan, and a life span of two or three hundred hours was enough.

The life of the turbojet engines used in the early MiG-21 and other second-generation fighters generally does not exceed 300 hours, and the life of the engine does not exceed 500 hours in the era when the MiG-29 is equipped with RD-33 twin-rotor turbofan engines led by the MiG-29 - until recent years, when the international situation eases, the life of the RD-33 engine finally exceeds 800 hours.

In fact, not only airplanes, but also tanks, armored vehicles and other Soviet military equipment have never been high, and the Soviets are not concerned about this, they care about whether they can be manufactured in large, fast and cheap wartime.

This kind of "everything for the war" research and development thinking, but also deeply affected the Soviet civil aviation industry, in the Soviet aviation industry, there is no pure "civil aviation engine" concept, even D-30, NK-8 such as the main equipment of civil aircraft engine, but also to fully consider the needs of the military, so the Soviet Union's "military and civilian general aviation engine" has taken into account the civilian economy and durability in the design, but the life is not very high: NK- The life of the 8 series has been increased from 1000 hours to 1500 hours and is now climbing towards a 2200 hour life.

Some readers said, you have said so much about the millennium, but you have not talked about the pride of the Ivchenko Design Bureau and even the entire Soviet aviation industry: the D-18T turbofan engine with a large bypass ratio of the three-rotor structure, so what is the problem with this engine?

In fact, the problem is the same as that of the D-30, NK-8 and other first-generation military-civilian general-purpose small and medium-sized ducted turbofan engines developed by the Soviet Union, the life span is insufficient, or to put it bluntly, too short!

What is the life of the D-18T engine?

It scares you to say it: before 1987, there were only 500 hours.