Chapter 599: Genius design

Hearing this, Qin Guan frowned. Although such a blunt design can temporarily meet the needs of the Air Force, it is not the most suitable choice.
The J-8 is a dual-engine amplification from the J-7. Although it has improved the nose and accommodates a large-caliber radar, it is still the foundation of a second-generation aircraft.
It can do nothing but volley.
The Han National Air Force cannot be equipped with a specialized interceptor. It seems that later generations have said that the MiG 31 is so powerful, why didn't Han buy some?
Of course, you can't buy it. What Han needs is a multifunctional fighter, not a missile carrier that can launch missiles from a distance.
This aircraft, no matter how it develops, has congenital defects that make it doomed to be a tasteless existence, not to mention that it has many problems.
"General Qin, what do you think of this fighter?" At this moment, General Zhang asked.
General Zhang is also very satisfied. The large nose of this fighter jet means that it can be equipped with a large-caliber radar. Now, this aircraft looks pretty good.
Qin Guan knew that at this time, he had to take the initiative to attack, and he could not be a good old man. This aircraft, from its finalization to its retirement, suffered from various problems. He did this now for the sake of the Air Force.
"I think it has a big problem." Qin Guan said.
When Qin Guan finished speaking, the lively atmosphere in the entire conference hall instantly went cold. This is 6601 own site, and there are countless proud engineers. Now, the aircraft they developed by themselves is said to be Is there a problem?
Which green onion are you? You, a small workshop worker who climbs up from a tank factory and doesn't know what nepotism is used, can you point out the problem with advanced fighter jets? You are really delusional.
"Mr. Qin, tell me, what's the problem with it?" At this time, Mr. Gu was also suppressing his anger. If you can't tell, don't blame everyone for drowning you by spitting.
"Its flight control system." Qin Guan said: "This aircraft is amplified on the basis of the MiG-21. Although it is amplified synchronously, the required torque does not increase proportionally to the control of the rudder surface. , And our control system did not follow the progress, this will cause serious problems."
During the entire service period of the J-8, various problems emerged one after another. Now, Qin Guan will start with a basic one, which is the flight control system.
That’s right, this is the weakest place in the 6601. The J-11s of later generations crashed because of flight control, and they couldn’t control it at all. Now, even if they think it’s their own manufacture, they are facing serious problems The flight control problem.
Hearing what Qin Guan said, the engineer in charge of flight control was about to stand up furiously, but Qin Guan continued to explain that the next words would be extremely professional.
"In the flight control system, there is always pulsating stress caused by the oil in the pipeline of the hydraulic system. The engine start and stop will cause the resonant frequency coupling of the oil and the hydraulic pump pumping backlash; during the thrust change process, due to Changes in the displacement and vibration of the hydraulic components form axial and radial variable stresses. During the flight of this aircraft, the hydraulic system is always subjected to a large alternating load repeatedly, which will cause a high probability over time. The pipeline was fatigued and ruptured and leaked oil, causing the aircraft to completely lose control. Within half a year, the pipeline will rupture and the flight control will fail and crash."
"Mr. Qin, you are really fantastic." Hearing this, the flight control designer finally stood up: "I do know a lot, even all kinds of stress, but can't you see it? In order to let the control system For more stability, we changed to a redundant hydraulic system. There are three systems in total. Even if one of them fails, the other two can ensure the normal flight of the aircraft."
It must have been taught to him by the guys from the 6611 Institute before he came out, but it doesn't matter. He has a plan to deal with it. He has already changed to multi-pipeline. What are you afraid of?
"This is the most idiot." At this time, Qin Guan had already stepped onto the large-scale beautiful design drawing, and began to point to a certain position on it, and explained that in later generations, this was seriously affected by the Air Force. Criticized.
"Sorry, I was wrong, it should be, this plan is the most genius." Qin Guan said: "Look here, there is a specially designed oil connecting pipe, and the three systems are completely interoperable."
"What do you know? This is for us to be reliable. In case one of the pipes has a problem, you can borrow it from other pipes." Of course, the flight control designer is very annoyed. Idiot, genius, that's mocking people. ,What do you know?
"That's the problem." Qin Guan pointed to the location: "This is the hydraulic pump, the most genius. After one of the sets is damaged and the pipeline pressure drops by 10%, the hydraulic pump will immediately pump out the hydraulic oil. Make up. This speed is more than 2.3 times the maximum flow rate of pressurized air, which means that one set of hydraulic oil will leak, and the other two sets of hydraulic fluid will soon be sucked away by the broken set. This kind of deadly design, It's really a genius redundant backup security design."
Speaking of this, the flight control designer's face has turned pale. Yes, he thought that this design was correct in the past, but now I hear someone say that there is indeed a problem.
"Of course, this genius is not just here." Qin Guan continued to explain in professional language, while pointing at various positions: "Here, the air and oil of the hydraulic pressurized oil tank are in direct contact with the negative pressure of the hydraulic oil tank. Under the pressure, the oil dissolved air overflows and scatters in a large amount. The oil with bubbles quickly collapses after entering the high pressure area, and the pressure at the collapse place exceeds the normal working pressure by more than 10 times. The resulting high-frequency vibration of the oil supply system will be 80 % When the engine speed is pumped and back flushed with the hydraulic pump, the oil resonance and the natural frequency of the pipe form the fluid-solid coupling vibration of the pipeline, causing rapid fatigue damage."
Qin Guan continued to use a more incisive statement to summarize: "This will not only kill everything, but also die quickly, so quickly that there is no time for the pilot to parachute."
The scene has completely calmed down. The bricks were dumbfounded and wanted to refute Qin Guan's words, but they didn't know where to refute, because the other party's inference was quite perfect.
Xiang Jing, the scholars, and the others, who were sitting below, thought they were playing soy sauce. As a result, these professional terms of Qin Guan kept jumping outward. Could this be Qin Guan's superpower?
That's too bad, he knows everything? Looking at the expressions of these bricks, you know how embarrassed they are, genius? moron?
Qin Guan sighed in his heart. These bricks were full of loopholes, but they were not afraid. Every time a plane had a flying accident, they would push them onto the pilot's head.
If it is selfishly speaking, Qin Guan said this is enough, but, after all, this is a fighter independently developed by Han, since I want to talk about it, let's talk about other issues.
"Next, I talk about other defects." Qin Guan continued.