It's just a booklet, but the amount of information carried inside the booklet is quite huge, especially the color printed pictures, which are all kinds of realistic and in place to show all kinds of details, which is very commendable for this, a military fighter positioned for sale, propaganda work must be done well, do it in place. Pen, fun, and www.biquge.info

Turning the first page, it is a large-scale illustration, which belongs to the typical industrial data model after the overall fitting and then computer rendering of the photo, all kinds of details reflect the absolute realism, which is very different from the simple use of three-dimensional CG modeling software to pinch out the model, the accuracy of the two sides is not at the same level at all.

And to be able to produce the three-dimensional data for the industrial model, and render according to the model data of the design, the first thing that is needed is the finalization of the entire industrial design, and the three-dimensional model used is the three-dimensional data model that can be directly imported into the CAM program for CNC programming and manufacturing, therefore: the rendering of the accuracy of the industrial model can be produced, at least it means the basic finalization of the design.

Of course, compared with the model pinched out by the direct rendering industrial data model and the three-dimensional modeling software, it must be more challenging for the former, and the simplest can be distinguished by looking at the size of the file data.

Yang Hui has seen a lot of pictures, and he can naturally see the extraordinaryness of this picture, but the UAE delegation is different, where do these oil tyrants in the desert know these things, only know that this picture looks really fine, and all kinds of details are almost no different from the photos, and some places even exceed the light and shadow effects that can be reflected in the photos.

"Yes, the shape of this aircraft is really not bad, it is also a conventional aerodynamic layout, but it is obviously a lot of stealth design, compared with the F-22 fighter announced by the United States, the aircraft has a lot of similarities in the details, which I think is very good, the advanced experience of the United States should learn more, but in the aerodynamic design, we must follow our own special needs."

For the aerodynamic design of Form IV, it has been clearly stated before, but now it is needless to say, it is a typical conventional aerodynamic layout, the only difference is that when the air intake channel flows through the middle fuselage, it chooses to flow from the back of the upper surface of the wing, so as to leave enough belly space to arrange the bomb bay.

The vertical tail continues the J-18 mature medium sweep angle camber double vertical tail, and the main wing in the design, the selection of the team sweep angle angle is taken from a can take into account the air combat and ground requirements of the middle sweep angle data, while taking into account the design of the aircraft's single engine double vertical tail, so the tail brace is still to have, and when the flat tail is designed, it is according to the needs of stealth, in strict accordance with the requirements of the parallel law and the wing line of the main wing is parallel, and the overall design is decent.

It is gratifying that this time the design of the pelvic fin was gloriously canceled because the tail of the secondary four could not be moved.

However, the design of the cockpit is a little abrupt, first of all, because it is the upper surface of the wing through the air intake, which leads to a bit of muscle in the shoulders of the aircraft, but fortunately, the "muscle" of the back of the aircraft will not affect the stealth, but it does not affect the stealth is on the one hand, but this thing will affect part of the pilot's backward vision, so it is very embarrassing.

It is for this reason that Hongdu has to raise the cockpit, the height of the entire cockpit relative to the fuselage is already comparable to the bubble cockpit design of the F-16, the entire pilot's field of vision is spacious at once, and even the cockpit canopy is directly similar to the F-16 design scheme, using an integral frameless design, throwing the cover and ejecting.

Comparable to the cockpit design of the F-16 fighter, the pilot's field of view in Form 4 is indeed very spacious, which is very useful for sightseeing, but this design also brings some troubles, the most typical of which is the optimization of wind resistance.

Although the bubble cockpit can give the pilot an unparalleled field of view advantage, but at the same time to get the field of view advantage, it is inevitable to highlight the entire cockpit, which leads to a huge wind resistance problem, although the wind resistance can be reduced by various optimizations, but the optimization can only be a small part, in fact, the wind resistance is still relatively large, which is not good news for the supersonic cruise flight indicators of the middle four.

But anyway, the original design of the current secondary four is at least quite good, the design puts the pilot's vision in a very important position, although there may be heard of any omnidirectional sensing system later, which can realize the pilot's "perspective" of the aircraft fuselage through the distributed installation of cameras, but that kind of thing is unreliable and unreliable, at least ten years after the fourth form is finalized, Yang Hui feels that he can't see the dawn of that thing's maturity.

So now Yang Hui can be very proud to comment that the pilot vision design of Form 4 is definitely one of the best, completely at the same level as the F-22, and the pilot vision design of the F-35 does not need to be compared, and everyone is not at the same level.

Of course, in addition to the high resistance, the blister cockpit actually has some impact on stealth performance, the main reason is that the glass is actually a wave-transmitting material, and the radar wave can pass through the untreated cockpit canopy and directly irradiate various reflection sources inside the cockpit: seats, buttons, .....

Therefore, at this time, it is necessary to use the cockpit cover coating technology, through the coating of various stealth coatings on the surface of the entire cockpit cover, so that the radar wave can not penetrate the cockpit cover, which is why it seems that the cockpit cover of the fourth-generation aircraft is brilliant, but now in the nineties, the Republic has not made a relevant breakthrough in this thing, Yang Hui only hopes to be able to have a breakthrough before the fourth finalized service.

"The fighter we designed is expected to fully meet the indicators of the fourth-generation aircraft and achieve the predetermined various operational requirements; For air combat: we are able to suppress the Eurofighter Typhoon and the American F-14E/F, which are currently under development; Ground Attack: It requires the ability to stealthily and accurately raid important combat nodes of the enemy on the front line. ”

For stealth fighters, it is actually very good to be able to do these two points, don't think too much about the rest, such as what anti-ship attack and other requirements, although anti-ship is the signboard of the AVIC Southwest military fighter, but for the anti-ship missile that requires stealth built-in, if this thing is too small, it really has no threat to the warship, Hongdu strictly follows the requirements of the military of the Republic to design and manufacture the Four, and even the Navy of the Republic has no anti-ship combat requirements for the Four, Form 4 is even less likely to have the ability to do so. (To be continued.) )