For the light four scheme of the outer inlet line design, it does not seem to be a variant of the side strip wing, after all, no matter how the design of the side strip wing will change, but in the end, one thing is definitely not changed, that is, the side strip of the side strip wing extends from the leading edge of the main wing, so in other words, in layman's terms, the side strip and the main wing must be at the same height. Pen "Fun" Pavilion www.biquge.info

Obviously, the outer line of the air intake of the light four scheme and the main wing are not at the same height, since the side strip and the main wing are not at the same height, then this must not be regarded as the design of the side strip wing, perhaps this design should be counted as a ......

"No, I said Lao Lu, your design is not the so-called edge wing, this broken line is not on the same level as the main wing, so this design is beyond the scope of the side wing, but the strange thing is that even if the two are not on the same horizontal plane, the detached vortex pulled by the broken line can also play a similar role in the design of the side wing, right?"

As Chief Master Song said this when everyone was feeling all kinds of emotions about Mr. Lu's divine pen, the small conference room suddenly quieted down for a while, and immediately someone understood what Chief Song said to study and compare the side view of the light four plan on the big screen.

Only Chief Lu smiled bitterly at this time, but in the end he shook his head at Chief Song, but in the end, he still couldn't escape the vicious eyes of 611, the old man of Song.

To say that the inlet line design this time, in fact, at the beginning of the study of this aspect, Chief Lu did follow the design idea of the F-22 air inlet line line, and later found that the F-22's fold line and the wing are on the same level, so it can indeed be regarded as a stealth repair design of the side strip wing.

But the same design is placed on different aircraft, but because the light four adopts the lower single-wing design, the height of the wing and the folded line on the outside of the air intake are not at the same height, so all naturally can not be regarded as the modification design of the edge wing, but the aircraft needs to be stealth, and finally must leave this folded line design, so Chief Lu can only keep the folded line in the design, and then there is a later amazing discovery.

"Okay, I know that I can't escape the eyes of your 611 Song director, and now I admit that the principle of this broken line working in aerodynamics is indeed very different from the design of the edge wing, and it is actually more like a fixed canard wing in the principle of vortex generation."

As soon as this remark came out, the sensational effect caused in the entire conference room was absolutely extraordinary, after all, just now everyone thought that this broken line evolved from the side strip wing, and they all admired Chief Lu for his amazing attainments in the aerodynamic design of the fighter, but now you suddenly say that this is not a variant of the edge strip wing, it is just a slap in the face!

But fortunately, there were less than ten people attending the meeting in the small conference room at this time, and everyone was a senior executive of the company who knew how to do technology, and this slap in the face was everyone's face, so no one was annoyed and angry, and in the end they could only laugh bitterly that they were slapping their eyes this time, and Chief Engineer Yu reacted first, but he was silent.

At this time, Chief Master Song confirmed his thoughts, and turned to be modest: "Yes! First of all, I said at the beginning that the idea of your inlet line design was derived from the F-22, and we did come to the conclusion based on the previous aerodynamic research of the F-22: it is a kind of edge wing. Then, this wave of us was led by you, and if I hadn't reacted a little faster, I would have really deceived you. ”

While speaking, Chief Master Song turned his head to the side angrily, seemingly dissatisfied with Chief Lu's previous behavior.

No matter how the others reacted, Chief Engineer Lu continued to explain the question about the nose fold at this time: "As for why this folded line is more similar to the canard wing in the principle of action of the vortex than the side strip wing, this is very simple, let's take a closer look at the airflow distribution captured by the high-speed camera we provide through the wind tunnel test." ”

With the change of the picture on the big screen again, this time it is not the side view of the three-dimensional CAD model, the new picture is obtained by taking pictures in the wind tunnel, the silver aerodynamic scale model of the whole machine is inserted and fixed by a steel pipe from the tail engine, and then the steel pipe is bent to the ground universal console below, and can do pitching, yaw and roll maneuvers within a certain range under universal control.

In the photo, the plane is flying at an elevation angle, and it is obvious that the folded line of the air intake channel has pulled out a white vortex, and this vortex directly acts on the top of the aircraft.

The people sitting in the conference room here either had an in-depth study of the wings or the canards, so they must have seen the difference between the vortex acting on the wings at the first time. And Chief Master Yu just opened his eyes once, and at this time, he stood up again, and he wanted to talk about his new insights.

"Sure enough! In principle, this vortex is more similar to the canard aerodynamic vortex, so it has nothing to do with the edge wing. But your inlet fold line must be an immovable design, which is certainly not comparable to the powerful effect of movable canards, plus this folded line is first to ensure the need for stealth, so it is not as protruding as a fixed canard, so I am sure that this folded line should be similar to the outer spoiler of the intake tract of the Mirage 3C fighter in terms of the effect of pulling vortices. ”

That's right, now the Mirage 3 fighter is mentioned again, but this is an embarrassing situation, the light four's air intake flow route, lower wing design, and even the function of the air intake line are all similar to the Spoiler of the Mirage 3.

Therefore, at this time, if the design of the middle of the fuselage of the light four is regarded as a super stealth magic modification of the phantom 3, this seems to be in the past, but the light four and the mirage 3 do not use the conventional aerodynamic layout of the light four.

Because the positioning of the light four needs to be sold to the outside world, and small countries must use the light four to carry out air superiority operations, this is Yang Hui's previous at the beginning of the light four project, according to the F-35 one vote of foreign users to summarize the hard indicators of the export-oriented light four.

Therefore, based on various considerations, the wing of the light four is directly scaled on the wing of the F-22 and then installed, and even the tail of the aircraft is also a direct copy of the F-22.

The camber double vertical tail design of the light four did not copy the F-22, Yang Hui knew at a glance that this was a variant of the J-18 double vertical tail, and the vertical tail area was not as large as the F-22, but because it was necessary to take care of the aircraft's over-patrol needs, the angle of the sweep of the leading edge of the vertical tail was also not small, and on the whole, it was similar to the 2.0 version of the wing design of the 31 plan on the northeast side of the previous one, and it was also a decent design for the light four. (To be continued.) )