Take Off My Aviation Era

It’s no wonder that this reporter would behave like this. The T-shaped vertical tail, also known as the high-flat vertical tail, has many advantages. For example, it can increase the control arm of the pitch angle to make the aircraft vertical tail. It is made smaller and lighter in weight, which improves the maneuverability of the aircraft while reducing the overall structure.

For another example, the T-shaped vertical tail is less disturbed by the disturbance of the engine and the wing, and the cruise resistance is small. Therefore, it can help the aircraft to obtain a greater speed in the state of level flight, especially in the subsonic state of passenger aircraft or business aircraft, the same power Under the circumstances, the cruising speed of the T-shaped vertical tail is higher than that of the traditional vertical tail configuration.

　　 However, the T-shaped vertical tail has many advantages, but it is not a panacea, because its shortcomings are also very obvious, that is, it is easy to cause a stall at a high angle of attack, and it is difficult to recover, causing a serious air crash.

This is mainly because the aircraft with a T-shaped vertical tail reaches a certain degree of angle of attack. The angle of attack of the aircraft will automatically increase due to the addition of torque, and there is no obvious jitter, tremor and other stall characteristics in the process, waiting for the pilot When I discovered it, when I wanted to recover, I found that the entire aircraft was out of control, so I could only pounce on the ground in exclamation.

　　 This is also an important reason why the Soviet Union's Tu154 passenger plane is not inferior to similar western planes in terms of speed, range and even passenger capacity, but it cannot be compared with western planes in terms of safety.

Because of the T-shaped vertical tail and the rear-mounted engine, the center of gravity of the aircraft is further moved backwards, resulting in an increase in torque. Once the pilot makes a mistake in making the angle of attack of the Figure 154 passenger plane exceed the critical range, the entire aircraft will stall, except for the crash. There is no other choice.

There is also the MD-82 series aircraft of the same type. However, McDonnell Douglas has done a good job in public relations, coupled with the meticulous production of the flight manual, stipulating that the maximum angle of attack of the MD-82 series aircraft cannot be exceeded, and it is strictly controlled by the computer. This did not make the MD-82 series aircraft become a flying coffin like the Figure 154 passenger aircraft, but compared with the same type of aircraft, the accident rate is still much higher.

Because of this, whether it is a large passenger aircraft or a small aircraft that adopts a T-shaped vertical tail layout, the take-off and climb phase of the aircraft is like everyone’s lady. It is impossible to come up with a high angle of attack and rush upward regardless of it, but slowly upward. , Fly slowly, and then demonstrate the speed and maneuverability in level flight. The reason for this is that the aircraft will stall if the lift is not done well.

But the newly launched TM-9 aircraft broke such a routine. Although the dry land it showed was not as perverted as those of European and American fighters at 65 degrees and 70 degrees, it was close to 50 degrees, although the engine was located at the front end. Compared with the rear-mounted engine, the center of gravity configuration of the whole aircraft is more reasonable, but the T-shaped vertical tail layout is easy to stall at high angles of attack. The law will not change.

　　 Unless...

　　 Several expert reporters glanced at each other, and one of them said in surprise: "Could their pilots control the aircraft so accurately?"

As soon as this remark came out, without waiting for a few other people to answer, the reporter who asked the question shook his head vigorously: "Impossible, the stall of a T-shaped vertical tail configuration aircraft at a high angle of attack is 1 to 1 At the level of 3 degrees, it is impossible for a delicate person to control the manipulation so finely."

Several other people nodded without disapproval. They are all senior media professionals in the aviation field. They know how difficult it is to control an angle of attack of 1 to 3 degrees. Maybe they shake their hands a little, and this angle will be taken by the pilot. Unconsciously transferred to the plane, and then...

　　 "The TM-9 aircraft developed and produced by Royal Thai Aerospace Industries Co., Ltd. just launched is also the first aircraft in Southeast Asia to adopt a fly-by-wire control system..."

Just when the reporters were puzzled by the TM-9 aircraft adopting the T-shaped vertical tail layout but daring to fly at high angles of attack and pulling the green onions in the dry land, the commentary broadcast of the air show aircraft flight display slowly sounded. In the opening remarks, the eyes of a kind of aviation media reporters were astonished, and they suddenly realized.

　　 "So it was telex control?"

　　 "Oh my god, the TM-9 aircraft actually uses fly-by-wire control?"

　　 "Thailand has applied the technology of fighter jets to high-end business jets!"

"It's no wonder that the TM-9 aircraft adopts the T-shaped vertical tail layout and dares to fly vertically at a high angle of attack. They have already completed all the flight envelopes of the aircraft in the control system. The pilot only needs to control the joystick, and everything else Hand it over to the computer, and I said that the car of His Royal Highness the Crown Prince of Thailand could not be so simple. Such a set of telex control is worth more than anything."

　　 The media reporters and many aviation experts on the scene immediately talked about it. The rookie newcomers and pure audiences around them naturally asked about the telex control.

If this is not the case for other aircraft at all, you must know that the F-16 and F-18 fighters in the United States on the first day were all fighter jets controlled by wire. There were also live commentaries during the flight performances. Did not cause such a big concern.

However, the TM-9 aircraft that appeared on the last day of the flight show attracted many people's discussion ~www.readwn.com~ and was very interested. The reason is simple. The rotating and tumbling aircraft in the sky is the seat of the Royal Prince of Thailand. , With its own halo of no royal power, naturally attracts unimaginable attention.

In particular, some wealthy businessmen who think they are worthy of their worth have asked quite carefully. The meaning is obvious. If they can, they also want to buy one. If they can, they will go out to discuss business in the future and point to the plane with their partners. This airplane has the same model as the Thai Crown Prince!"

　　 That momentum, that brand's face immediately changed.

　　 "I knew it was so popular, and I had to bring Mr. Guo to say anything."

Hearing a lot of audiences asking about the telex control system, Lin Guanghua said with some regret, Zhuang Jianye nodded slightly, and then shook his head and smiled: "However, I guess Mr. Guo has no interest even if he knows. If our experimental product is successful or popular, Mr. Guo can smile at best and say that this path is right, and then continue to be locked in the research room for fighter telex control. That is his ultimate goal for the elderly."

　　 Lin Guanghua was taken aback when he heard the words, and then nodded with a wry smile.

　　 The manager Guo mentioned by the two is no one else, but Guo Xiaobo, the director of the Flight Control Research Institute and the chief engineer of the F-by-wire control system sub-project of the 10th Project.

For so many years, Guo Xiaobo has led the project team. Starting from the drone, he explored the architecture and algorithm of the fly-by-wire control system and made good progress. However, he also encountered considerable bottlenecks, especially when the funds were tight. The machine became a headache for Guo Xiaobo.

　　 So an aircraft platform based on experimental verification was put on the agenda.