In fact, not only the European Typhoon fighters, but also many fighters with a three-wing layout are also in this way, such as the most common Su-33 and Su-35 in later generations.

Now, all kinds of advantages and disadvantages are clear, and the choices of each company also have their own reasons, and in front of everyone, how to choose this is still a difficult problem.

"Is there only one way?" Someone asked.

"No, there's a third." Hearing someone ask, Qin Feng said, "Of course, there is a way to compromise, which is medium-distance coupling. ”

The relative distance between the main wing and the canard wing is general, the root of the canard wing and the projection of the main wing do not overlap but are very close to each other, the canard area is determined according to the need, this canard wing combines the advantages and disadvantages of the long distance and the near distance, because the distance is very close, so the wing can use the vortex, but it is farther than the near canard, so that the attitude of the aircraft can be controlled.

It can be said that this kind of mid-moment coupling canard wing is a typical pneumatic layout that is not enough to take advantage of and suffers uncomfortable, but the difficulty of this layout is the greatest!

"What we want to do is this kind of layout, if we want to do it, we will do it best!" Song Lao clenched his hands into a fist: "Otherwise, in a meeting in Beijing, what I said is empty words, lies, we must do the best!" ”

I have studied the canard layout for many years, and in the past, I have been thinking about how to achieve the high-altitude and high-speed required by the Air Force, but now, I can finally do it according to my own ideas.

As long as the indicators put forward by Minister Ye are realized, the realization of these indicators is completely fine, and now it is a matter of how to surpass and how much to surpass.

Either you don't do it, or you do it best!

Of course, Song Lao understands how difficult this kind of layout is, but now, he just wants to go to this kind of layout!

The ability to use eddy currents to increase lift and the high control of long-distance coupling is a kind of thinking that requires both fish and bear's paws, but it is very difficult!

"First of all, the first problem with this is that the design of the flight controller will be extremely complex." Qin Feng explained on the side: "Either use vortex, or use it to control, both vortex and control, in this way, it poses a huge challenge to the development of our flight control system, in particular, we have never engaged in fly-by-wire control, such a difficulty, far beyond our expectations, if coupled with the static and unstable design, it can be said that for us, it is simply God's difficulty." ”

Qin Feng didn't know what to use to describe it, in short, the difficulty was super great, unimaginably big.

If Song Lao wants to do this, he has to take a big risk.

"This, I also have an idea, that is, we use the wind tunnel, in the wind tunnel, from subsonic to supersonic speed can fly, the state of flying, all the situation blows him, almost a point-by-point flight curve, to develop our own flight control rate."

This is a stupid method, but also a way to overcome the problem, in this era, to engage in the control rate of aircraft, the general fighter is to measure some points in the wind tunnel, and then according to the specific function algorithm to solve the entire flight curve, and Song Lao said this, the need for work, it will take many times.

But in doing so, it's another way to solve the problem! This method relies on stupid work, and no one in the Western world does it.

In order to complete the design, you can use this stupid method to achieve it!

When Song Lao said this, he had obviously made up his mind, and Qin Feng said: "This is a way, but there is another point, that is, the separation of vortex. ”

The upper and lower distances between the main wing and the canard wing should not be too close, but if they are far away and cannot receive the vortex, they cannot increase the lift, how to solve this problem?

"This problem, which I also came up with, is to have the inside of our main wing twist to accept the vortex, so that we can achieve the goal of both controlling the force and increasing the lift."

The inside of the wing, twist upwards, and take the initiative to pick up this vortex!

This whimsical idea was just come up by Song Lao, and when Song Lao said this, Qin Feng couldn't help but give a thumbs up: "Song Lao, since you have thought it through, then let's do it, you provide the basic data, and I will build the model!" ”

In the discussion, the J-10 fighter, nicknamed the Raptor, was later named, and the basic design elements were determined, although there were so many variables in later generations, but this medium-range coupled aerodynamic layout has been continued.

Now, it's 1982.

In later generations, countless military commentators will say that the domestic Jian-10 fighter is an imitation of Israel's Lion fighter, and even say it conclusively and say so many reasons, but as long as you know the common sense of the development of military aircraft and the development of Project 10, you will know that this is completely nonsense.

In the most basic layout, the canard wing of the Lion fighter is typical of close-range coupling, and the canard and main wing are very close or even coincide! Their idea is to use eddies to increase lift, and there is no other idea.

After all, this fighter is used as a bomb truck, and if you increase the lift, you can increase the payload capacity.

Moreover, it is said that the lion's canard wings cannot move at all and does not have any control.

From this alone, you can know that the two have nothing to do with each other at all.

Of course, if you want to say that during the development of the J-10, you have visited the Lion fighter, that is for sure, since there is such an opportunity, why not take advantage of it?

If Israel gave all the information to the 611 Institute, and the 611 Institute developed the Jian-10 on the basis of these materials, it would be nonsense, one is for bombing, the other is for air supremacy, the needs are different, the aerodynamic layout is different, what are you doing with it?

After the Lion fighter test flight, it was found that the head was too fierce and difficult to control, and the distance between the canard and the wing was too tight, and the coupling effect was strong, but it brought huge resistance, resulting in a serious substandard range of the aircraft, it was simply an immature product, at most it was to let the technicians of the 611 Institute open their eyes.

We have to use this kind of excuse to slander the development of the domestic military industry, such people really have ulterior motives.

Now, at the insistence of Song Lao, the new annihilation project, even if the basic form has been determined, for Qin Feng, it is to pick up the drill bit, saw the bow, and start building a model!

1 second to remember Aishang:. m.