The research and development process of fighter planes is long, and it is only the 80s now, and the successful development of fighters and the commissioning of equipment units will definitely wait until the 90s, so what we should aim at now is the international environment in the 90s.

In this case, this J-13 is even more chicken.

Thinking of this, Song Lao has a sense of urgency, what the Air Force needs is an advanced fighter, not an advanced coat, but the internal thinking is still a product like J-12!

However, Song Lao knew that in this meeting, he only had fifteen minutes of time, and now, he had to wait.

Now, it is Director Fang's turn to report, they have been preparing for this meeting for a long time, and now, Director Fang is standing in front of the large model, talking endlessly to the leaders and the experts attending the meeting.

"As you all know, our aircraft has been planned for nearly ten years, and we have determined the current form through a large number of wind tunnels."

"As an air superiority fighter, the J-13 needs to have the maximum maximum flight Mach number possible to pursue or evade enemy aircraft, and it also needs to be able to fly at high maneuvering speeds at subsonic or transonic speeds. In order to balance the contradictions, the main wing of the aircraft adopts the form of a side strip wing. ”

The role of the side strip wing, everyone is clear, now, Director Fang is clear, the explanation is the first way, because there is a side strip front wing, so that the effective sweep angle of the whole aircraft increases, the relative thickness decreases, so the shock wave resistance is small, suitable for the requirements of supersonic flight.

The existence of the basic wing increases the effective aspect ratio of the whole wing, which can reduce the induced drag at low subsonic speed and transonic speed, especially when flying at large elevation angles, the edge strip vortex generated by the separation of the edge strip forms a favorable interference and increases the lift.

In addition, the dragged out edge strip vortex can also add kinetic energy to the upper wing surface, delay the separation on the basic wing, and thus can produce considerable additional lift, which is very conducive to the aircraft to make a high maneuvering flight at high subsonic or transonic speed, after all, when formulating indicators, it is required to reach the level of J-6, which is the most important indicator in close combat.

Then, in terms of the air intake method, the two air intakes were compared again, and Director Fang gushed endlessly, saying one item after another, and finally talking about the engine.

For J-13, the choice of engine is quite difficult, at the beginning, because of the introduction of Spey, it was envisaged to use Spey as its power, but Spey's maximum thrust is less than ten tons, which is obviously seriously insufficient, and later, it is planned to use turbofan-6, the maximum thrust exceeds 12 tons, the thrust of this engine is enough, but the reliability of the engine, is not daring to say.

Now, there is finally a suitable engine, that is, the engine of the mapping imitation MiG-23, and once the turbojet-15 completes the mapping and imitation, it will definitely be the most suitable power.

Director Fang said one after another, and when he gushed about the design ideas of the entire aircraft, the morning passed.

After lunch at noon, the discussion on this project began in the afternoon, and almost all the experts attending the meeting had a positive attitude towards this project.

Obviously, this project takes into account the current industrial level of the country, just like the original J-8, based on the current level, there are almost no technical problems faced, or they can be solved, it is the easiest solution to achieve.

However, it is precisely because of this that it does not dare to innovate and dare to use some more advanced technologies.

For example, relaxing static stabilization, fly-by-wire operation, these projects did not appear on the J-13.

Although its skin is the same as that of the F-16, these new technologies, the F-16 have been used, bringing an agile fighter, and put it on the J-13, ordinary hydraulic manipulation, even if it is on the leading edge of the maneuvering flap, does not contribute much to the improvement of flight performance.

The development of the new destroyer has a bearing on the country's national defense construction and on the future development of the air force; under such a difficult situation, the state has decided to invest a huge amount of money to launch a new third-generation aircraft project, which is really not easy.

Thinking of this, Song Lao's heart was very anxious, he turned his head and looked at Qin Feng, but found that Qin Feng was holding his chin with his hand, and it seemed that he was listening very seriously, but in fact, his brain didn't know where to run for a long time.

Qin Feng is waiting for his own project, and he will carry out some propaganda under Song Lao's hands, not this chicken J-13, not to mention anything else, look at Director Fang's report, considering the existing conditions of the country, it was decided that most of the J-13 will use a daytime type that is only equipped with a radar rangefinder, and it is not even equipped with a pulse Doppler radar, and it can only rely on machine guns to fight, which is blind to the nose.

Qin Feng didn't want to waste time.

However, until the end of the meeting today, it was not Song Lao's turn to speak, and everyone's performance was almost one-sided in agreeing with the plan of the 601 Institute.

After all, this project has been going on for ten years, they have carried out a lot of preparatory work, how many times they have blown the wind tunnel, they are already familiar with the scheme of this side strip wing, and it is based on the existing technical level in China, it is easy to get it.

Song Lao did not have a chance to speak.

That night, in the guest house, everyone's mood was relatively dull.

"Our meeting will be held for two days, and we will have a chance tomorrow." Song Lao said: "Since the superior promised to give us 15 minutes, then we will definitely have a chance." ”

"Yes, Old Song, we must seize this opportunity." Qin Feng said: "Today, in the report of the J-13, there are several dead hole problems, and I see that no one is willing to point them out. ”

Yesterday I prepared a gelatin in the middle of the night, and I didn't use it today, so I can continue to use it tomorrow, and tomorrow when I make a report, I must think about the key points.

Qin Feng's words attracted Song Lao's attention: "Tell me." ”

"The J-13 project, first of all, does not use relaxed static stability and wing-body fusion, and its maneuverability cannot reach the level of the F-16 at all, not even 80 percent, and another big problem is that comprehensive avionics are not used, and in future wars, there is no advanced electronic equipment, which means death."

Qin Feng has a very opinion, and now, he finally chatted with Song Lao: "We analyze foreign information, the future air battle will be a long-distance air battle under the command of the early warning aircraft, whoever discovers the opponent first and locks on the opponent, who will take the initiative, one-sidedly emphasizing that close-range combat is useless, and it will be shot down after liftoff, how can you fight bayonets in the air?" ”

Song Lao listened carefully, and at the same time planned to organize the language, and when he waited until tomorrow, he must make the future air battle clear!