The Military-industrial Scientific Research System of the Academic Master Chapter 131

Chapter 131 shows the climb rate of the J-8-3

Yang Fenghata did not respond immediately, but held his face with one hand and fell into thinking.

This concern is certainly valid.

The J-8-3's participation in the exhibition can only be used to find potential foreign customers for at most two points, and the remaining eight points are dedicated to cheering up the Chinese people.

  But if it is put together with the Su-27 flight performance, then this effect...

 He looked at the deputy chief designer Liu Ming and Chang Haonan who were sitting on both sides of him—

As the latter's role in the August 3rd Project grew larger and larger, the latter's seats in meetings also increased. From the beginning, he could only huddle in the corner of the conference room with Lin Shikuan, but now he can be assigned to a meeting The position at the edge of the table has now become stable at the front.

Although he may not stay in the 83 Project Team for a long time, this feeling...

 It's still cool!

 After all, not to mention sitting in this position in my previous life, even if I occasionally attended a meeting, at most I was just a spectator.

 It's not even attendance.

“I think it would be self-defeating.”

Seeing Yang Fenghao's posture, Chang Haonan felt that it was almost time for him to speak:

“The Xiangzhou Airshow is not only a matter for Xiangzhou, but also for China as a whole. This year is the first time it will be held. It is the time when we need to gain reputation the most.”

“On the one hand, the arrangements for the air show have been basically finalized. If there are any temporary changes, it will be detrimental to the exhibition's reputation.”

“On the other hand, even if the performance of the two Flankers is postponed to the next day, it seems that it will not have a direct impact on us, but it will not make any difference to those who follow the air show.”

“As a late-developing country, we are currently unable to produce an aircraft that surpasses the Su-27. There is nothing to be ashamed of. Going to the air show is originally to show our progress.”

“Being timid in the face of competitors and still trying to make extravagant moves seems like we are deceiving ourselves and others and are not confident enough.”

Chang Haonan's words quickly had an effect.

Those who were still able to stay in the military industrial units in 1996 had more or less the energy to refuse to admit defeat.

Now, just in time for the successful test flight of the No. 04 prototype after the engine replacement, the long-term depression has finally been released, and the morale has naturally improved.

 Once again being stimulated like this, the effect will be immediate.

 Some people immediately stood up to express their support:

 “Chang Gong is right!”

“Don't care about the performance of the Su-27, it must not lose its momentum!”

There are also extensions based on Chang Haonan's analysis:

“Another point is that our J-8-3 and Su-27 are performing on the same field, so the pressure should be on Sukhoi's side.”

 One sentence woke up more people.

 “Yes, that makes sense…”

“Really speaking of the performance effect, Su 27's win is nothing, but if it is not as good as us, then it will be a big loss.”

 In fact, the person who made this suggestion at the beginning did not have any bad intentions. He could only say that caring would lead to chaos, and he wanted the best performance for his own aircraft.

 So everyone quickly reached a consensus on this matter.

"In this case, let's determine what items need to be arranged in this 20-minute flight show."

Yang Fenghao said and turned a page of the notebook in front of him:

“After all, this is still a new aircraft, and it will take some time for the pilots to adapt to it.”

 The atmosphere in the venue suddenly became lively again. “If an airplane performs...super maneuverability?”

Although everyone is engaged in aircraft design, they are not actually experts in flying itself.

Not surprisingly, someone immediately raised objections:

"It would be too risky to use a prototype aircraft that has not yet been designed and finalized to engage in super maneuvers. And I also know that the Su-27 will most likely perform the most classic Cobra maneuver. We cannot use our own shortcomings to attack each other's strengths. We have to think about what we have What unique advantages do you have?”

This speech was obviously very pertinent, so everyone started brainstorming along his train of thought.

“Unique advantages...but the things we are better at cannot be performed at air shows.”

 “Our ceiling is higher than theirs, but...”

The flight show itself is of a special nature. In order for the audience to watch it with the naked eye, it must be low-altitude and low-speed subjects, and the flight overload cannot be increased very much.

This is really not friendly enough for a high-altitude, high-speed aircraft.

Chang Haonan was also a little troubled at this time. The improvements he had made to the J-8-3 in the past few months were mainly focused on the maneuverability under low-altitude and low-speed flight conditions, allowing the aircraft to fly to 2.4 levels that he could not even imagine in the past. Doubling the speed of sound is actually a matter of piggybacking.

But with the foundation of the second-generation aircraft, no matter how good the low-altitude and low-speed maneuverability is, you really have to compare it with the Su-27 with a lifting body design...

 That's not the case after all.

While he was thinking about possible performance content in his mind, he lowered his head and looked at other content arranged in the air show, trying to find some inspiration from it.

“Su-27 and Su-30 fly against each other…”

 In an instant, an idea flashed through Chang Haonan's mind.

“Actually, if I have to say it, we still have advantageous projects...”

“The No. 04 prototype can be allowed to focus on some vertical maneuvers, especially large-angle climbs. After replacing the new engine, the thrust-to-weight ratio of the aircraft will exceed 1 when taking off without weapons.”

Of course everyone present is well aware of the basic performance of the aircraft, but some people still have concerns:

“Vertical maneuverability... But the thrust-to-weight ratio of the Su-27 is even higher. It is really better than the climb rate. Unless it goes above 15,000 meters, it still won't be able to take advantage.”

“This is true in common sense, but compared with other performance, there is still a certain room for operation in this aspect.”

Chang Haonan adjusted his sitting posture and said to the person who just spoke:

“I saw the performances submitted by Sukhoi. They were all performed by two machines, and the whole performance was very long.”

“This means that the two aircraft have to load more fuel when taking off. Moreover, the single-seat Su-27 aircraft has to cooperate with the movements of the two-seat Su-30 during the performance and cannot exert its full performance.”

 Everyone is an expert, and after Chang Haonan mentioned something like this, they will naturally understand what is going on.

For almost all fighter jets, the two-seat version requires extra weight and space to accommodate an extra pilot and corresponding operation and life support equipment, so its performance will be weaker than the single-seat version of the same model. Some.

 Depending on the specific model, the difference is probably between 5% and 10%.

  But the Flanker family is an anomaly.

 Due to its iconic nose design with a depressed angle, the "back seat" of the tandem two-seater model Su-27UB is strictly behind and above the front seat, and the height difference between the two pilots is huge.

This design brings unparalleled visibility to the back seat (which is useless in most cases, and is essentially to accommodate the huge radar), but it also greatly increases flight resistance accordingly.

This is not over yet, because the heightening of the cockpit will affect the vertical fin efficiency and directional stability, so the two-seat version has been replaced with a larger vertical fin...

In short, after a lot of hard work, the flight performance of the two-seat Flanker is far worse than that of the single-seat version. It is generally believed to be about 15% or even higher.

“Not only that, our performance time is relatively short, so there is no need to bring half a full amount of fuel according to the normal routine, and we can also reduce some weight.”

“Calculated inside and out, at least from a physical perspective, it should be able to produce vertical maneuverability that is not inferior to those of the two Flankers!”

 (End of this chapter)

Chapter end