Although the heavy four scheme of the 0111 Institute has been redesigned after the tail wing, Yang Hui has a new feeling for this aircraft, or a new understanding. Pen @ fun @ pavilion wWw. ｂｉｑUｇE。 ｉｎｆｏ

I couldn't help but not insert a sentence, just like that, I watched these backbone designers of the 0111 Institute have a heated discussion on the new design of the heavy four-tail wing, especially after the improvement of the tail wing, although it is still the aerodynamic rudder surface layout of the four wing surfaces, it doesn't sound too complicated, but Yang Hui, as the backbone of the project design, no one dares to underestimate the difficulty of the tail design.

Li Yun, who rushed back to Guiyang from the newly established avionics company in Chang'an to attend the meeting, has been frowning, he doesn't know if the new X-shaped tail design has brought some special requirements to other design departments of the project.

Anyway, he only knew that this time he would be responsible for the design of the fly-by-wire flight control will be a big challenge, a total of four wing surfaces are all movable design, and all of them have some tilt angles, so the role of these wing surfaces is also quite complex, and the action coordination of the wing surface involved is indeed not simple.

"After the new aerodynamic scheme came out this time, it brought great convenience to your stealth design department and pneumatic department, but you didn't stuff the problem into my flight control design department, X-shaped tail design, which is very challenging in control!"

In fact, if you really want to talk about it, the flight control design of the full-motion vertical tail alone is already a big problem, but this is not unacceptable, gritting your teeth can also get through, the previous full-motion camber vertical tail is not a matter even if it is matched with the full-motion flat-tail design, the big deal is to become a T-50 tail design, and the flight control can also be relatively easy.

Now the difficulty of the newly improved aerodynamic design is that it has to tilt down the full-motion flat tail, which not only needs to play the role of trimming, but also needs to ensure a stable flight course, which is also another difficulty in the preparation of fly-by-wire flight control, and this time it is the full-motion down-tilting flat tail and the full-motion camber vertical tail are mixed together, which needs to be studied well......

As the chief designer, Sun Huizhong clearly knew the extreme requirements of the new plan for flight control, and comforted him: "Now we have no choice!" In order to optimize the aerodynamic shape design and ensure that the stealth performance of the fourth-generation heavy destroyer is excellent enough to reach the same level as the F-22, or even stronger, then we must not have a ventral fin. ”

After unswervingly expressing his hatred for the tumor of the pelvic fin, Chief Master Sun still felt that he couldn't ask too much of the flight controller, and thought of the plan discussed when he visited Chief Master Yu before, and after a comprehensive choice, he finally made up his mind again.

"But if it is really difficult to have enough confidence in the flight control design this time, we can also consider changing the three-dimensional vector nozzle in the scheme to a two-dimensional vector nozzle similar to the F-22, so that at least the thrust vector control of the engine can reduce a lot of problems, and the two-dimensional vector engine can also require less attitude control of the tail of the aircraft."

Changing the three-dimensional vector tail nozzle to a two-dimensional vector is also a new idea put forward by the design team in recent times, mainly taking into account the high pursuit of stealth capabilities of the fourth generation of heavy annihilation, and the use of a two-dimensional vector nozzle similar to the F-22 certainly has better stealth performance than the use of a three-dimensional vector nozzle.

As for those who say that the 3D vector nozzle can also achieve a good stealth effect after using the zigzag design, in fact, there is nothing wrong with this, but the real problem is that although the 3D sawtooth vector can be invisible, this stealth ability cannot be compared with the 2D vector at all.

In order to obtain more excellent backward stealth capabilities, it is also to be able to slightly simplify the difficulty of attitude control and coordination of the fourth-generation heavy annihilation tail of the 0111 Institute, reduce the difficulty of flight control writing, and ensure that the risk in development is reduced.

At this time, the most difficult problem is no longer whether the two-dimensional vector can be technically done, you must know that although AVIC Southwest does not have much research in the field of two-dimensional vector fighter engines, but because the pre-research of the large-winged stealth aircraft has also been established before, it cannot be said that there is no research on the two-dimensional vector as a pre-research project for the large-wing stealth aircraft.

This is the power of pre-research, although it does not allow you to directly get the mature technology, but after the pre-research stage, as long as you have a need for a certain project, then you can directly pull out the pre-research technology and invest a lot of money, so that the difficulty and progress of technology development can be effectively controlled, so as to reduce the technical risk.

The whole meeting from the beginning, did not stop halfway, Yang Hui for the new 0111 four generations of heavy annihilation program is naturally more curious, in this case to get out of the program, I don't know what the end will be like in the end, or maybe 611 is better or possible, after all, according to the previous J-20 design ideas, it is also quite competitive four solutions.

Yang Hui now only knows one thing for sure: whether it is the design scheme of the 611 Institute or the 0111 Institute, these two fourth-generation heavy destroyers are very much the flight control design, and no matter who wins the two schemes in the end, I am afraid that all the resources of AVIC Southwest in the field of fighter fly-by-wire flight control must be concentrated, and a great collaborative battle is inevitable.

can still give Yang Hui some comfort, probably after the first flight of the J-20 in the previous plane, there was no major flight accident until Yang Hui's accident, which shows that Yang Wei, who was responsible for the design of the J-20 at that time, still has a very good set of flight control design management.

It was not until the meeting was completed that Yang Hui stood up to convey the latest news, smiling at the backbone designers of the institute, who were the core scientific research and design team of the AVIC Southwest 0111 Institute competing for the fourth-generation heavy annihilation project, and the news must be conveyed in place.

"I listened to the latest design of the heavy annihilation program, to be honest, I appreciate this kind of "bold and aggressive" design, the reason why we can have today, this is precisely because we have the ambition to catch up, and now when the fourth generation of heavy war, only the United States continues the F-22 fighter project, and now Russia has insufficient stamina in this regard, and what we want is to copy the Su-27 against the F-15 between the dragon and tiger, and now this program makes me see hope. ”

I didn't plan to pause for too long, and continued to strike while it was hot: "Then I will announce the latest news, in the second half of next year, the Navy and Air Force will jointly hold a four-generation heavy annihilation program bidding, and there are a total of three design institutes that are eligible to participate in the project, you are considered one party, the 611 side, and the 601 of Fengtian will also participate in this competition, everyone should prepare well." (To be continued.) )