"This engine thrust graph is very good, but I don't know how long it is?" Qin Feng continued to speak: "As long as the lifespan can be guaranteed, it doesn't matter if the temperature is higher. ”

"Of course, the life is no problem, the overhaul interval of our engine is as high as 350 hours, and after two overhauls, it can be used for thousands of hours!"

Looking at the old Maozi with a very proud look, the visitors from the East here are a little helpless, do you think it is very high? True, compared to the 100 hours of the MiG-21 engine, it is high, but it is simply incomparable with the Western one, and the overhaul interval of the F404 engine can reach thousands of hours!

"That needs to be improved." Qin Feng spoke: "The overhaul interval must reach 1,000 hours, and the service life must reach 3,000 hours, so that the engine can be accepted by our customers." ”

"That can't be!" Starov immediately shook his head: "We currently have an improvement plan, but the goal of improvement is to increase the thrust to nine tons, in terms of life, we have never considered it a defect, according to the experience of World War II, the fighter does not live more than fifty hours in the sky......"

When Staroff said this, he suddenly reacted: No, how did he tell the modification? If the Oriental wants to buy it, they can only buy the prototype, we don't sell modifications!

But now, the words are all spoken, how can they be taken back?

"If the thrust can reach nine tons, then we can still consider putting up with the defects of engine life." Qin Feng nodded: "You should know that our customer Lao Bus is notoriously difficult to serve, they can access advanced Western aircraft, if our technical indicators are not met, they can't look down on it at all." ”

Nine tons of RD33B, which belongs to the improved version of the Klimov Design Bureau, after all, the RD33 engine began to be designed in 68 and delivered in 76, and it has been more than ten years now. As for the later RD33MK, it is already a matter of the new century.

Qin Feng talked to Lao Maozi about the conditions, and Tu Lao and the others hurriedly drew a diagram on the slide and recorded the entire thrust curve.

"By the way, what is the thrust-to-weight ratio of this engine? We've heard that you measure the thrust-to-weight ratio with dry weight and the West with wet weight, and the difference is quite large. ”

Starov didn't answer, just looked at Bezlyutko with a complaining gaze, needless to say, this was also revealed by Bezlyutko, everything that came out of Qin Feng's mouth had to be counted on Bezlyutko's head.

How much benefit do you guys take from the Orientals, so hard? Do you know that this kind of behavior is not big or small?

"It's inconvenient for you to say?" Qin Feng looked at the person opposite: "I heard that the control system of the RD33 engine is electronically analog, very large, and very bulky, which seriously affects the total mass of this engine, and the most critical thing is that it is above, we want to use it in a single-engine aircraft, and the engine controller must be designed to be suitable below, this improvement work must be done, I don't know if you have seen the engine controller in the West, only the size of a book......"

RD33 is used on the twin-engine MiG-29 fighter, in the upper middle of the two engines, the aircraft has a special accessory casing, and maintenance is carried out from this opening, anyway, the MiG-29 is a double-vertical tail structure, and the middle is empty.

But the super seven is not good, this is a single-engine aircraft, the engine is above the tail hanging, there is no way to open the mouth on the top for maintenance, and the maintenance above is not convenient, according to the practice of the West, are installed below.

Therefore, it is necessary to change the controller of the RD33 from RD33 to RD93, which is a prerequisite for Super Seven to use the old Maozi engine. At the same time, it is also the biggest disagreement between the two sides.

The engine controller in the West is digital and very small, Lao Maozi's engine controller needs two boxes, weighs 25 kilograms, and the volume also reaches 36 liters, which is the biggest difference between the two sides.

The West is easy to change, but the old Maozi is not easy to change.

Sure enough, Staroff shook his head immediately: "Impossible, impossible, the controller of the engine has been fixed and cannot be changed, and we have no intention of changing it." ”

"Ugh." Qin Feng sighed: "Old Tu, this engine is not suitable, I'm afraid we won't be able to use it, this trip is in vain, I'll give them food below, and they will all eat it in vain, let's go!" ”

Tu Lao was stunned for a moment, go?

You just said a lot, which means that you know this engine very well, and the goal of our coming is to run for this engine, and now you want to go?

However, since Qin Feng said so, there must be a purpose, and he has to cooperate.

"Old Sun, let's go."

From beginning to end, Manager Sun is a soy sauce player, this time, the negotiation method is completely different from before, there is no official channel, and he, the leader of China Aviation Technology, has no place to play.

"Okay."

"Alas, according to our plan, there is at least a demand for hundreds of units, but I didn't expect that the people of this Klimov Design Bureau are really arrogant and don't think about customers at all, but we can't blame them, after all, they are not a market economy yet, and they don't know what Party A's father is."

Seeing that Qin Feng was leaving, Bezlyutko was anxious.

"Mr. Qin, Mr. Qin, don't worry, we can negotiate if there is a disagreement! You sit down first! Bezlyutko looked at the other side again: "Starov, since the customer has made a request, can't you change it according to the customer's request?" Anyway, the customer will give you money. ”

I don't know if the customer gives us money, but you must have already gotten the money, otherwise why are you in such a hurry to see that the Oriental people are leaving? Staroff didn't speak, his face still gloomy.

"Okay, Bezlyutko, I'll give you a face, let's stay and continue to talk, this receiver ......"

"This can't be changed!" Starov also came to lose his temper.

"Okay, let's put the controversy aside for the time being, let's talk about something else." Qin Feng said: "Let's move on to the problem of air inlet matching, we need to see how the air intake demand of this engine is. ”

Replacing the engine is a big project, in addition to the volume to meet the needs, the bracket to change, the matching of the air intake tract is also very important.

Now, it is time to talk about the next big question, which is also the main disagreement, of course, not here, but in the Mikoyan Design Bureau.

"The problem of matching the intake tract ......" Starov hesitated.

"Receiver changes require investment in research and development, and the matching of the air intake, as long as the data is told to us, this is not a problem, right? Don't you even want to tell us about that? Qin Feng's face also became gloomy.

"Staroff, let's introduce the data of the air intake." Bezlyutko spoke.

"Hmph, even if you don't introduce us, we have a way to get it." After speaking, Qin Feng glanced at Bezlyutko again.

"Okay." Staroff nodded, and was about to speak, when he heard a bang, and the door was pushed open!

Several old hairy people appeared at the door, and the one led by them had a gloomy face: "The matching of the air intake has to be left to us!" ”

"Beryakov, why are you here?" Bezlyutko was stunned.

Beryakov is the chief engineer of the Mikoyan Design Bureau, that is, the number one, and at the same time the head of the aviation industry of Lao Maozi, his status and power are very large, and he is also a veteran of aircraft design, and is currently leading the development of the most advanced MiG-1.44 fighter in the Soviet Union.

Beryakov didn't have time to waste on the Orientals, but why did he suddenly appear here now?

"Hmph, of course I have to come, otherwise, some people will say everything that should be said and what should not be said." Beryakov's tone was a little gritted his teeth, and he looked at Bezlyutko with an unkind gaze.

"Really? Who is talking nonsense? Bezlyutko asked.

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Didn't you knowingly ask? Beryakov was eager to ask Bezlyutko right now, how much money was in the envelope you received from the Orientals last night? It's all spread in the design bureau today!

"Hmph." Belyakov snorted, then looked at Qin Feng and the other Donglings.

"Ladies and gentlemen, we are very happy that you want to purchase our Soviet RD33 engine for use in your Super Seven project, but the matching of this engine has to be handed over to our Mikoyan Design Bureau, after all, we are most familiar with this engine, and at the same time, the overall design of the aircraft can also be handed over to us, what Grumman can do before, we can do, and even do better."

At the beginning, the Sabre 2 plan Lao Ba was determined to let Grumman be the general contractor, because he was worried that the strength of the 132 factory was not enough, it was not easy to change the engine, and there was a lot of matching work to be done, and if he wanted to make the aircraft have high enough performance, it was necessary to carefully design the overall aerodynamic layout.

The Mikoyan Design Bureau took over the project, which is also of positive significance, the final shape and structure of the Thunder Dragon was actually formed in the hands of the Mikoyan Design Bureau, and later the two sides broke up, and the 611 Institute took over some repairs, forming the final layout of the Thunder Dragon.

However, such a toss and a lot of time are wasted, and if Xiaolong wants to sell well in the international market, he has to hurry up and can't keep wasting time.

"Who are you?"

"This is the chief designer of our Mikoyan Design Bureau, Comrade Beryakov!" The people brought by Beryakov were immediately introduced.

"Oh, it turned out to be Comrade Chief Designer, sorry, sorry, I thought Bezlyutko was...... Come, everyone sit, since you are here, then sit down and talk together, our Super Seven project really needs your support. ”

A smile squeezed out of Beryakov's face: "Okay, let's talk, our Mikoyan Design Bureau used to have a close relationship with the East, and now our relations are gradually easing, and we also hope to deepen the relationship and help your Eastern Air Force to realize the renewal of equipment." ”

"No, no, you misunderstood." Qin Feng said: "Our Super Seven fighter is an export fighter, and we don't plan to use it for our own use, after all, we need advanced modern heavy fighters, and Super Seven is a light fighter, which is not suitable for our own equipment." ”

"Yourself? I've heard that you have copied Grumman's Tomcat fighter, are you going to use that fighter as your main force? The era of variable swept wings has passed, and the next era belongs to our MiG-29! ”

"Really?" A sarcastic smile appeared on Qin Feng's lips.

"Isn't it?"

"The design scheme of wing-body fusion and variable swept wing is indeed the current trend, but it is only now, the technology of fighter aircraft is developing rapidly, and the technology of the new generation of fighters will be transformative."

The generation of fighters will confuse many people in later generations, whether the F-22 is a fourth-generation aircraft or a fifth-generation aircraft? And what about our Su-27? 3rd generation or 4th generation?

Different times have different sayings, and different countries have different classifications.

The subsonic fighters that just entered the jet field in the early days are all first-generation aircraft, what MiG-15, F-86 are of this type, and second-generation aircraft are supersonic fighters, from MiG-19 to MiG-25, they are all of these types, mainly pursuing high altitude and high speed.

By the third generation of fighters, the shift to high maneuverability began. It is generally believed that American-made fighters started with the F-14, and Lao Maozi's fighters started with the MiG-29 and Su-27.

However, in this way, Lao Maozi feels that he has suffered a loss, after all, it is generally the Americans who develop fighters first, and when American-made fighters come out, Lao Maozi will develop corresponding models, and overwhelm American-made aircraft in various parameters, Su-27 is a typical example, and the F-15 must be suppressed.

But this has also led to another result, that is, in actual combat confrontations, it is often the Yankees who use the generation advantage to suppress Lao Maozi's planes, for example, after the F-15 and F-16 come out, they are often confronted by MiG-23 and MiG-25 aircraft.

So, Lao Maozi simply took out his own aircraft, MiG-23 and MiG-25, and divided them into a separate generation, so that there would be one more generation, and when it came to MiG-29 and Su-27, it would have to be called the fourth generation.

Although there are many ways to divide them, the MiG-29 and Su-27 are of the same generation, and since these fighters have been developed, the next generation of fighters will of course have to begin.

What should the next generation of fighters look like?

The Yankees put forward the standard of 4S, and began to bid for YF-22 and YF-23 according to this standard, and Lao Maozi is also developing a new generation of fighters, specifically, the Mikoyan Design Bureau has been tinkering with the design scheme of the MFI multi-role fighter since 83, the design code 1.42, just look at the time, when the MiG-29 was just finalized and put into service, as the first Soviet aircraft research and development institution, their actions were very fast.

Unfortunately, the technology required for a new generation of fighters is too high, so it was not until 89 that the first prototype was built, codenamed MiG-1.44, if the Soviet Union collapsed a few years later, so that this aircraft was successfully finalized and put into service, then after the separation, the Mikoyan Design Bureau would definitely not have such a miserable life, and it could be completely mixed with this heavy fighter.

When the Mikoyan and Sukhoi design bureaus were engaged in the MiG-29 and Su-27, they followed the advice of the Central Fluid Institute, using the side wing and wing body fusion layout, the two aircraft are different in size, but the performance is close, in the new generation of aircraft, the Mikoyan Design Bureau continued to follow the advice of the Central Fluid Institute, using the canard layout.

It adopts a close-coupled canard wing and tailless delta wing layout, the belly has a multi-wave adjustable air intake, followed by a twin engine and double vertical tail, the whole fuselage is wide, can provide a lot of lift, has a large number of control surfaces, and the design of the aircraft is not only not stealthy, but also very good.

In later generations, when the J-20 came out, there were always some unscrupulous people who found foreign fathers for the plane, saying that the J-20 used the technology of MiG-1.44, which was despised.

Back then, Qin Feng was on the Internet, but he didn't scold these guys who admired foreign people, but now......

Bezlyutko, I'm sorry, but I'm going to have to do this to get you to the East! You are a little wronged first, first bitter and then sweet.

"I don't think so." Qin Feng said: "The way of conventional layout has fallen behind, and now, in order to pursue advanced performance, the canard layout should be used!" ”

Conventional airplanes have wings in front and rudder control in the back, while the canard layout seems to reverse the two, with the rudder control in front and the main engine wing in the back, and the wing will be made into a large delta wing shape.

The biggest advantage of this layout is positive lift, the conventional aircraft to look up, the tail must be pressed down first, the nose can be upturned, and the control rudder surface of the canard layout is in front, as long as the rudder surface is deflected, the nose is immediately pried up, which is naturally more flexible to fly.

"In fact, in the previous era, the canard layout was paid attention to by many designers, but, in the past, due to hydraulic control, the control of the canard layout was non-linear, which led to the inability to operate, and now with the fly-by-wire operation, the canard layout will definitely be valued, I dare to assert that the future era belongs to the canard fighter, and you, as the strongest fighter design bureau in the Soviet Union, have ...... It is necessary to develop a fighter with a canard layout! ”

The people of the Mikoyan Design Bureau were stunned.

How do you know?

Although the 1.42 project has been in place since '83, it has always been kept under wraps, only their internal designers know about it, and it must not be passed on, who said it?

A few years ago, the relationship between the two sides was very stiff, and there could be no exchange, and only now, it has just begun to contact, and the first person to contact the Oriental is Bezlyutko!

Could it be......

"How do you know...... What do you think is the best duck layout? Beryakov glanced at Bezlyutko and continued.

"There are two kinds of canard layouts, one is far away from the main wing, called long-distance coupling, this canard is mainly used to control the rudder surface, and the torque is large enough, the area is not too large, you can control the pitch of the aircraft, and the other is very close to the main wing, called close-range coupling, mainly used to pull the vortex, I think, if the engine is forced, the close-range coupling is more appropriate."

In fact, there is another kind of medium-range coupling, which is the original creation of Jian-Shi, but of course Qin Feng can't say this.

"This layout, preferably the structure of a twin-engine heavy aircraft, the normal take-off weight needs to reach 30 tons, don't look at the weight, but the engine is powerful, if it is equipped with an afterburner thrust of 175 kN of the engine, even if it is a maximum take-off weight of 35 tons, it can also get a thrust-to-weight ratio of more than 1, and it can also cruise at supersonic speed."

Every parameter is so coincidental that it is exactly the same as the data of the MiG-1.44!

"The tail should be put with a double vertical tail, in order to play a good control effect, it should be farther away from the engine, by the way, in order to control the fuselage, the rudder surface should also be more, I think at least 18 are needed, the pelvic fin, the tail brace can have a rudder surface, although the control is complicated, but the effect is leveraged!"

It's definitely no coincidence that every piece of data is accurate, someone must have leaked the secret!

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