Wei Hongkun, a senior aerodynamics expert, has only been committed to the study of duck ~ ~ wing layout for more than ten years, although it is the frontier field of aerodynamics, but it is not the mainstream aviation technology led by the United States and the Soviet Union, which is somewhat out of the way, if it were not for Yang Hongyi in several design schemes of J-9, several of which introduced the duck ~ ~ wing layout, it is estimated that the Chinese aeronautics community does not know that there is Wei Hongkun.

Rao is so, with the disembarkation of the J-9, and the failure of the No. 10 project selection plan improved on its basis, Wei Hongkun was once again forgotten in the corner, and his hard work for half a life to study the professional paper of the duck ~~ wing layout was also regarded by the industry as a respectable technical attempt, thrown into the pile of old papers, and no one cared about it again

But I didn't expect it to attract Lu Jiadong's attention, not only that, but also from the words of the paper, I read the efforts and hardships that Wei Hongkun paid for the duck~~ wing layout, as the so-called one minute on the stage, ten years of work off the stage, especially in the field of aviation aerodynamics,

In order to achieve a perfect hydrodynamic structure, there are many frightening theoretical verifications, mathematical calculations and wind tunnel tests, even if a vertical knife antenna is installed on the body, or a convex equipment compartment is added, because of the subtle changes in the aerodynamic shape, it is necessary to carry out hundreds or thousands of mathematical proofs before it can be put into practice;

However, these painstaking attempts and verifications, may not be able to achieve satisfactory success, but often accompanied by unimaginable failures, duck ~ ~ wing layout is one of the best evidence, after all, not every country is like the United States and the Soviet Union, with a super aviation technology research and development capabilities and supporting industrial system;

Especially in the field of aero engines, this so-called industrial crown jewel is not something that can be done by a random country, because of this, in the case that the entire technology and power system are inferior, many countries have to find another way out in order to have cutting-edge fighters comparable to the United States and the Soviet Union;

The duck~~ wing layout has gradually become a research direction in this context, because it has been found that the installation of a controllable rudder surface at the front of the fighter can not only add an upward lifting vortex afterburner to the aircraft during flight, but also give the fighter stronger maneuverability while changing the direction of the vortex during maneuvering, so as to achieve a maneuverability and climb rate that is no less than that of the advanced fighters of the United States and the Soviet Union while reducing the power output.

Because of this, the duck~~ wing layout is very popular in Europe in the second echelon of aviation, because this layout does not need to manufacture high-thrust heavy turbofan engines with ultra-high difficulty and technological level, only medium-thrust engines with slightly lower difficulty can achieve performance and technical and tactical levels that are not weaker than those of American and Soviet fighters.

Therefore, France, a European aviation industry power, took the lead in studying the duck ~ ~ wing layout as a key direction, and then Sweden, a Nordic military industrial power, also explored its theory, followed by the United Kingdom and Germany, and finally even Israel, the air hegemon in the Middle East, could not bear the loneliness and began to explore the duck ~ ~ wing layout!

Wei Hongkun saw a certain possibility in this trend, you must know that China's aviation industry base is not as good as Europe, and there is an unimaginable huge gap in the field of turbofan engines, if there is a way, will reduce the thrust of the engine at the same time, have a strong air mobility capability, it is tantamount to a great good thing for Chinese fighters.

So he decisively gave up the aerodynamic research of Soviet-style fighters that could be called prominent in the field of aviation at that time, and turned to attack the duck~~ wing layout that was not accepted by the United States and the Soviet Union, so he had to start from scratch, without the support of high-performance computers, he used hand-cranked computers to verify his data, and when the hand-cranked computers were broken, he simply used abacus to continue to calculate;

In order to get more data in a valuable wind tunnel test, he made more than ten duck ~~ wing layout models each time, which made the staff of the wind tunnel test bench complain to him, so that after repeated failures and attempts, Wei Hongkun finally vaguely touched the core technology of duck ~~ wing layout.

However, this extremely realistic aerodynamic layout, but because it was incompatible with the mainstream of aeronautics at that time, and in the research process, there were too many failures, and it was not possible to give the superior leaders a convincing exact value, and his duck~~ wing layout research was put into the cold palace, and the only result was only a pile of lifeless scrap drawings and a few papers that no one cared about

So when Lu Jiadong said duck~~ wing, he was very surprised, and he was even more shocked when he pointed out those papers, but then the regret and helplessness hidden in his heart were like a Pandora's box that was opened, instantly filling his whole body, making him ashamed and annoyed for no reason, not because Lu Jiadong broke the pain in his heart, but because of the regret that he did not do his best

Sneering, embarrassed, silent and even regretful, Wei Hongkun's series of changes in expression fell in Lu Jiadong's eyes, which also made him a little flustered, although he also knew that his so-called "authority" in the field of ordnance industry might not be able to enter the eyes of all the aviation experts here, but he did not have the idea of standing up and beating many experts to death with a stick.

After all, Lu Jiadong is not as handy in the field of aviation as he is in the field of ordnance, and he has never participated in the development of a fighter in later generations, and all he knows is nothing more than some internal information.

Intersecting with these experts here with solid theories and rigorous academics, the little aviation ink in Lu Jiadong's stomach is simply weak, so Lu Jiadong just said the previous words with a discussion mentality, how could it have the effect of slapping his face? Could it be that he was too pretending to ~~~ just now? No, it seemed to be quite reserved just now!

Fortunately, the experts present don't know what Lu Jiadong is thinking at the moment, otherwise they have to find a piece of tofu to hit him to death, and he can say that the duck~~ wing layout is already a knowledgeable person, not only beyond the expected scope of experts, but also shocking Lu Jiadong as a celestial.

But why do you have to mention Wei Hongkun's paper and the efforts he has made, you must know that the duck has been stopped over the years~~ The study of wing layout has always been a scar in Wei Hongkun's heart that is difficult to heal.

At this moment, Lu Jiadong was already screaming in his heart, because Yang Hongyi told Lu Jiadong about Wei Hongkun with a note, Lu Jiadong didn't expect that he just wanted to compliment the old expert, but he didn't want to be self-defeating, so he slapped the old expert's face twice.

How is this good, if it makes the experts chill, how can the work be carried out in the future, is it possible that I really want to wear the red little ~~ inside~~ inside, and become SuperMan? Even if I have this heart, I don't have that ability, in the end, I have to let these experts help me achieve it.

But if you admit your mistake immediately, it doesn't matter if you lose your face, the key is whether Wei Hongkun can accept it, you must know that people who are engaged in technology are a little extreme, just like Yang Hongyi, even if he takes the initiative to admit his mistake, that zombie face will still not be sunny for several months, Wei Hongkun estimates that it is about the same, otherwise he will not be poked by others in the sensitive spot, and he will become so defeated, it seems that it is not possible to take the initiative to admit his mistakes, so what should I do? Lu Jiadong's black eyes rolled slightly, and he thought about it

"As explained in Professor Wei's paper, the duck ~~ wing layout does have many benefits, especially for our current aviation industry, it is indeed an excellent layout that can quickly make a breakthrough, however, although the method is good, Professor Wei chose the double three ~~ angle ~~ wing structure, which is inevitably a bit of a snake!"

Listening to Lu Jiadong's words, everyone present was shocked, even Yang Hongyi, who had been squinting his eyes slightly, suddenly had round eyes and looked straight at Lu Jiadong, as for Wei Hongkun, he raised his head in surprise and looked at Lu Jiadong in disbelief, and only came back to his senses after a while, and shook his head heavily:

"Double three ~~ angle ~ ~ wing structure is the most able to disturb the vortex current, into the lift of the wing structure, I have done a lot of experiments, double three ~ ~ angle ~ ~ wing is the best wing structure using air lift!"

"The duck ~~ wing layout in the front section is also to improve the lift, so why use the double three ~~ angle ~~ wing structure? Moreover, the angle between the large wing surface and the small wing surface in the double three ~~ angle ~~ wing structure is difficult to determine, not to mention that in the case of the duck ~~ wing layout, the maneuvering advantage of the double three ~~ angle ~~ wing structure is not necessarily greater improvement, so why use such a complex wing structure, instead of using a simpler and less difficult wing structure? For example, there are no tail three ~~ angle ~~Wing structure, using this structure, the maneuverability advantage of the fighter, it seems that it does not have to be double three ~~ angle ~~ wing structure is not so bad"

"Tailless three~~corner~~wing structure, double three~~corner~~wing structure, with duck~~wing layout tailless three~~corner~~wing structure, tailless three~~corner~~wing structure"

Wei Hongkun wrinkled his brows, muttering about the layout of several wings, his emaciated face became more and more dignified, as if he was stuck in some kind of quagmire that he couldn't extricate himself from, but in the next moment, his face was slightly darker, his brows gradually relaxed, and his gloomy eyes suddenly brightened, until finally he showed a strange look, and the palm on his leg was raised even higher, and he suddenly slapped his thigh:

"Oh my God, tailless three ~~ horn ~ ~ wing structure with duck ~~ wing layout, how did I not think of it, how did I not think of it haha" (To be continued.) )