It took Dai Ming a while to react. He blinked and looked at Chen Fei seriously: "Political Commissar, you mean, this is the plane's problem, not ours!"
"Yes!" Chen Fei nodded: "This is their problem, not ours, so do you think the problem of Lin Jun and Yang Ping is still a problem?"
Chen Fei's trick of killing people completely is very awesome. If it succeeds, then the ideological problems of those two people will not exist at all.
"But Li Gong said there was no problem with their plane." After regaining consciousness, Dai Ming said again.
"I will discuss this matter with Mr. Li soon. I came here to tell you in advance, just to make you happy first and not to have such a big psychological burden!" Chen Fei told him frankly.
"Then let's go find Li Gong first!" Dai Ming said.
Chen Fei naturally understood Dai Ming's psychology, nodded, and did not refuse: "Okay, Lao Dai, then you lead the way, we will go find Li Gong now."
"Okay!" Dai Ming was not polite and was the first to walk out of the office.
Chen Fei followed him out.
Qi Hong blinked his eyes, and then followed him sluggishly.
When he walked out of the office building, Dai Ming turned around and saw Qi Hong, and glared dissatisfied: "Qi Hong, what are you doing with me?"
"Chief, I'll come with you to take a look!" Qi Hong licked her face and smiled.
"Do you understand?" Dai Ming muttered, but he didn't insist anymore and just walked forward quickly.
Li Gong's full name is Li Jing. She is a doctoral student of the general manager of the J-15 R&D team. Because the general manager still has a lot of work, she is stationed at the base all year round. She handles some basic technical issues.
For more complicated matters, she will discuss them remotely with her instructor.
Li Jing's living and working area is not on the side of the aviation brigade, but in the opposite direction. But it's not too far, and you don't need to drive. If you walk, it's only a few minutes away.
Boom, boom, boom.
Dai Ming knocked on the door.
Li Jing was sitting in front of the computer studying something when she heard a knock on the door. She stood up hurriedly and came out with a smile: "Lao Dai, you are here!"
Although Dai Ming is the head of the base, he is lively and outgoing, loves to joke, and can get along with everyone, so Li Jing and others call him casually.
"Li Jing, regarding the 319 incident, our political commissar seems to have slightly different opinions, so I would like to communicate with you." Dai Ming smiled a little embarrassedly and said it tactfully.
"Huh?" Li Jing turned her head and looked at Chen Fei.
Chen Fei didn't feel embarrassed at all. He walked forward and handed the information in his hand to Li Jing without any nonsense. He said in a deep voice: "Hello, Mr. Li, this is what I have studied carefully these two days.
I wrote some thoughts after reading some of your previous relevant information. I’m not sure whether it’s right or not. Please correct me!”
Chen Fei said it very euphemistically, but the information in his hand was extremely direct. The title was "Some views on the 319 Incident—Opinions on improving the approach power compensation control of the J-15 carrier-based fighter jets."
Seeing the title, Li Jing raised her head and looked at Chen Fei again, looking at it without blinking. After three seconds, she lowered her head again and started reading from the beginning.
"Facts have shown that the landing of a carrier-based aircraft is the most dangerous stage. The aircraft is subject to various complex challenges and is most prone to landing accidents.
The landing area for carrier-based aircraft on the ship is mainly the deck of the aircraft carrier. The deck area is limited and it is not a fixed platform. Due to the heavy weight and large inertia of the aircraft carrier, it is continuously affected by waves, sea winds and airflow on the sea surface. In space,
If there are irregular movements in all directions within the aircraft, the ideal landing point DTP of the carrier-based aircraft will shift by several meters or even tens of meters within a few minutes of the carrier-based aircraft landing. In addition, the field formed by the ship wake will
The interference of air flow is also worthy of attention. It will seriously affect the aircraft landing process. According to existing research results, if the impact of airflow disturbance is not reduced or suppressed, the interference of the steady-state component of the ship's wake flow field alone may cause the ship to collapse.
It is offset by tens of meters, and the climate environment on the sea surface is unstable, sometimes sunny and sometimes rainy, which cannot be prevented. Once the weather environment cannot be handled, the blow will be fatal. According to official data from the United States, the U.S. Navy in January 1961
In August, five ship landing casualties occurred in just one week. It can be seen that aircraft pilots seriously challenge their shipboard skills and psychological quality every time they land on a ship.
In order to solve the difficulty of safe landing, we can rely on two methods: manual assisted landing and fully automatic landing. In the manual assisted landing mode, the Fresnel lens optical landing assist system FLOLS and the landing signal commander LSO are combined.
The combined assisted landing method is the most widely used method. The artificial assisted landing method shows very good control in designing the landing trajectory of the aircraft and achieving a smooth approach, which also gives the pilot enough
Confidence has greatly improved the success rate of landing. However, this method has always had some insurmountable difficulties. The main ones are that it is very susceptible to human factors and external climate conditions, both of which are uncontrollable. Due to FLOLS
It will be limited by the range of deck movement, so that it can only work under the conditions of hull pitch within ± 6 degrees and roll within ± 10 degrees. If the sea surface conditions and climate environment are very harsh, the FLOLS mode cannot be used.
At the same time, LSO mainly relies on human experience for judgment, so the reliability of the landing cannot be guaranteed."
After reading this paragraph, Li Jing raised her head and looked at Chen Fei in surprise, because this paragraph already showed enough professionalism. For such a thing, even Dai Ming, who can be called a half-carrier-based aircraft expert,
No one can write it.
She stared at Chen Fei blankly for a while, then lowered her head and continued going down.
When she saw this paragraph, she was dumbfounded: "In ACLS, the approach power compensation system APCS is undoubtedly a crucial component. Since the carrier-based aircraft will enter the inverse area of the speed curve when approaching at low speed.
, at this time, the approach power compensation system APCS comes into play, in order to solve this "speed instability" problem. During the aircraft's descent to the ship, the automatic landing system automatically provides feedback, adjusts the aircraft's attitude, and compensates for the power, so that
The aircraft can respond quickly, keep up with changes in the glide trajectory angle, and achieve landing on the ship according to the predetermined trajectory. Since the ship body will continue to move when the aircraft lands, the trajectory angle must respond to the pilot's attitude instructions as quickly as possible, especially
It is at the last moment when it is close to the hull that the aircraft must track the movement of the hull as accurately as possible. So, if it is to do this when it is very close to the hull, it is difficult to rely on the pilot's control. A power compensation system must be used.
, in order to ensure the rapidity of aircraft trajectory tracking. The input of the power compensation system is the angle of attack and normal acceleration, which indirectly adjusts the speed and controls the aircraft speed gradually and steadily. To quickly control the flight speed vector, as long as the aircraft angle of attack can be quickly controlled,
Changing the flight attitude angle can quickly control the aircraft's glide trajectory angle. The best situation is that during the dynamic response process, the deviation in the angle of attack can be completely eliminated through the action of the control law. Then the pilot only needs to change the aircraft attitude angle.
It can achieve a fast response of trajectory angle to attitude angle without static difference."