Dominate South Asia

Although different aircraft have different flight control rates, all the ideas are the same. If one model is successfully developed, other models will continue to emerge.

Even a specialized stabilizer can simulate the flight characteristics of different aircraft by inputting different control rates, so that one aircraft can study the flight patterns of many aircraft.

"Now, the research and development of our flight control hardware has been completed, and we have specially built a stabilized aircraft." Song Wenchong said: "We used the JJ-7 to modify a fly-by-wire stabilized aerial test aircraft. to conduct telex system experiments.”

Historically, it was modified from a J-6. Now, in order to speed up the experimental progress, Chengdu Aircraft has modified a J-7 for experiments. The front cabin was modified into a review test pilot cabin, and the rear cabin adopted a fly-by-wire control system. For the safety of the cockpit, the original mechanical control system is retained. The pull rod between the two-cabin steering column coordinates the disengagement and engagement of the fly-by-wire control and the mechanical longitudinal and rear rods through an electromagnetic clutch. In this way, during the fly-by-wire control experiment, once the fly-by-wire control fails, mechanical operation can be used for control through the emergency cut-off switch. This is also the reason why the two-seater JJ-7 was chosen for modification. It is equipped with a digital pneumatic stabilization system, an analog electro-hydraulic servo human sensing system, a digital target tracking and display system, and an airborne data collection and recording and telemetry launch system. , test signal amplifier, atmospheric turbulence signal generator and various components such as sensors, converters, electrical and hydraulic components, etc. The hardware development has now been completed and is ready for test flight.

"Fax-by-wire operation is a new thing. Overseas, many fighter planes have experienced malfunctions one after another when using fly-by-wire control. We cannot make the same mistake and must act according to scientific rules." Mhamad said: "Fly-by-wire operation is a new thing. For transmission operations, hardware is very important, and software is even more important. How is the development progress of your software? "

For fly-by-wire, the pilot no longer controls every control surface. The pilot inputs signals to the flight control computer by pushing the operating stick. The flight control computer determines the pilot's intention and controls the actions of each control surface. In this way, the quality of the program directly determines the flight quality of the fly-by-wire system.

After hearing such professional questions from Mhamad, Song Wencong said: "Now, we are increasing our strength to overcome this difficulty, but this is a new system, and we lack enough professional talents. Moreover, we also lack leaders. People, I want to take the lead and overcome the difficulties together.”

In the absence of a leading figure, Song Wencong is the chief designer of the aircraft. At the same time, he must also take the lead in the development of flight control.

There is not much left to research. Engines, avionics, these difficulties have all been overcome. There is only one body left, and the most important thing is the flight control.

However, after all, this is the design of a fighter jet, and there are many aspects to consider. The chief designer is generally not the person in charge of a specific item.

After hearing Song Wencong's words, a person suddenly appeared in Mhamad's mind. Said: "Don't you have a man named Yang Wei here?"

Yang Wei is a person who will become famous in later generations because he is the backbone of Chengfei. He is also the chief designer of the J-20!

Born in 1963, graduated from Northwestern Polytechnical University in 1985, majoring in aerodynamics and flight mechanics. Obtained a master's degree in engineering and was assigned to work at the Chengdu Aircraft Design Institute of China Aviation Industry in the same year. Now, he has only been with Chengdu for one year, and his qualifications are still relatively low. He is just a new researcher.

But Hamad knew that this was a young engineer who was also full of ideals and ambitions, and had the drive to study hard. Back then, when the J-10 was being developed, he was the organizer and pioneer of the fly-by-wire flight control system. Without any domestic experience to draw from, he consulted, understood, and thoroughly understood a large amount of technical information. After hard study, he led other technical staff to carry out a lot of pioneering work and implemented full-system digital simulation and principles. After testing, the plan was finally determined and the difficulties were overcome. When the J-10 was tested that year, the first flight was statically unstable, and during the entire test flight, there was not one crash due to flight control issues.

Later, he became the chief engineer of the two-seat J-10, the foreign trade Super-7, and the new J-20 fighter. He became an expert in fighter manufacturing in the sky of the Republic. It is precisely because of him that we have the powerful self-research and development of later generations. fighter plane.

Now, Mhammad proposed this person, although it was a bit abrupt, but Mhammad only needed to find an excuse. For example, through his own researchers here, he learned that Yang Wei was very good. Now, Chengdu needs people like this to stand out the most.

"Are you talking about the graduate student assigned last year?" Song Wencong said: "He is indeed very motivated to study, but after all, he is too young. He is only twenty-three years old this year."

Even Yang Wei's age was known, and it seemed that Song Wencong was quite impressed by Yang Wei.

"The development of new fighter aircraft requires young blood." Mhammad said: "Now, foreign third-generation aircraft are already flying all over the sky. The Soviet Union and the United States already have their own third-generation aircraft, and Europe is also actively preparing for joint cooperation. If we want to achieve leapfrog development in research and development, we must use a large number of new people. Although they do not have rich experience, they have the drive to study hard and are good at breaking the rules. Our third-generation aircraft needs such people.”

Song Wencong nodded and said to the person next to him: "Call Yang Wei over."

This kind of meeting is not something that a graduate student who has just been assigned can come in. After all, even the chairman is here.

Mr. Deng looked at the young man who came in with great interest. He was very excited to see him.

"Yang Wei, your reputation is very famous. Even the president of our friendly neighbor Pakistan knows your name." Deng Gong said half-jokingly.

"Hello, Chairman, Hello President." Yang Wei said, "I'm very excited..."

"Tell me, what do you think of our digital telex?" Mhammad asked. Although the No. 10 machine is an important project of the Republic, with its good relationship with the Republic, there is absolutely no problem if Pakistan wants to equip it. In later generations, Pakistan had to use the performance because of financial problems. A slightly inferior Super Seven fighter.

"I think that if we want to achieve leapfrog development, we need to use advanced technology. We should use the VXI bus structure to carry out our measurement and control work. This can simplify a large number of measurement and control procedures and achieve optimal results. At the same time, we should build a Ground measurement and control of our The digital telex test bed completely simulates various situations in our flight, exposes various problems on the ground, and improves our flight control procedures." Yang Wei has already had a series of ideas in his mind. Now, in this place, he didn't hold anything back and said it all.

Setting up a test bed on the ground, that is, an iron bird platform, can expose a large number of problems and improve one's own program design without leaving problems in the air.

Deng Gong looked at Song Wencong and saw that he was nodding his head. Obviously, the experimenter below had not expressed these thoughts before, and it was only now that he finally expressed his thoughts.

"In this case, how long do you plan to spend to perfect the flight control?" Mhamad said.

"One year." Yang Wei said: "If you follow my idea, I believe that our three-axis four-redundant digital telex can be produced in one year. Our hardware has already completed the experiment. The main problem is software writing. Through the test bench, we can quickly find out various problems. ”

In later generations, Yang Wei also completed three years of work in one year and successfully mastered this kind of flight control.

"Okay, Yang Wei, I now appoint you as the chief designer of the flight control project. All our flight control researchers will be under your command." Song Wencong said. He found that Yang Wei was indeed capable. At this time, he immediately went out of his way to Special promotion.

There is a lot of corruption within Shenfei. The top and bottom ranks of researchers are based on relationships and how many gifts they give. People in key leadership positions are all a group of people who cater to flattery. Even the chief designer is good at shirking responsibility and enjoying success. people. When the J-8 was successfully developed, it was hurriedly equipped with troops. However, when the troops flew, they found that the rudder surface was shaking, which almost caused many flight accidents. The troops responded, but the chief designer of Shenfei insisted that it was the flight troops who operated incorrectly. caused. In the end, the flight commander slapped the table in front of him, and he was forced to admit that it was a design problem and make revisions.

Cheng Fei is full of vitality. If you want to do something, you must have capable people. It depends on technology and ability! Yang Wei, 23, has taken over the responsibility of flight control since then, which is an example.

"In order to make fighter planes more combat effective, advanced flat-panel gap radars are on the one hand. On the other hand, we also need to see the advantages of helmet sights, large off-axis combat missiles, and optoelectronic systems." Mhammad continued: "I wonder how our imitation work is progressing?"

In several air battles with the Soviet Union, Pakistan obtained several sets of helmet sights, R-73 missiles, and advanced OEPS-29 electro-optical sighting equipment through wreckage and the search for parachuting pilots. These equipment were shipped to Chengdu. , researching together with Chengfei personnel.

In later generations, when encountering a complex electromagnetic interference environment, the radar may fail, and new means will be needed. For example, this photoelectric aiming device can be upgraded to a photoelectric radar to guide one's own missiles.

Pakistan has tried every means to prevent the United States from obtaining these advanced technologies. What the Americans have obtained are wreckage and not complete. (To be continued ~^~)