It is no wonder that this reporter will behave like this, the T-shaped vertical tail, also known as the high flat vertical tail, has many advantages of using this vertical tail layout, such as the control arm that can increase the pitch angle, so that the vertical tail of the aircraft is made smaller, lighter in weight, and the overall structure is reduced while improving the maneuverability of the aircraft.

Another example is that the T-shaped vertical tail is less disturbed by engine and wing disturbances, and the cruise resistance is small, so it can help the aircraft to obtain greater speed in level flight, especially in the subsonic state of passenger aircraft or business jets, under the same power, the cruising speed of the T-shaped vertical tail is higher than that of the aircraft with the traditional vertical tail layout.

However, the T-tail has many benefits, but it is not a panacea, because its flaws are also very obvious, that is, it is easy to cause stalls at high angles of attack, and it is difficult to change out, causing serious air crashes.

This is mainly because the aircraft with the T-shaped vertical tail reaches a certain degree at the angle of attack, and the angle of attack of the aircraft will automatically increase due to the bonus factor of torque, and there is no obvious jitter, tremor and other stall characteristics in this process.

This is also an important reason why the Soviet Tu-154 passenger aircraft is not inferior to similar Western aircraft in terms of level flight speed, range and even passenger capacity, but it cannot be compared with Western aircraft in terms of safety.

Because of the T-shaped vertical tail, coupled with the rear of the engine, the center of gravity of the aircraft is further shifted back, resulting in an increase in torque, once the pilot makes a mistake, the angle of attack of the Tu-154 passenger aircraft exceeds the critical range, and the entire aircraft will stall, and there will be no other choice but to destroy the plane and kill people.

There are also MD-82 series aircraft of the same type, but 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 exceed how much, and the use of computers to strictly control it, which does not make the MD-82 series aircraft a flight coffin like the Tu-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 with a T-shaped vertical tail layout of the aircraft take-off and climbing stage is just like everyone showy, it is impossible to come up with a large angle of attack regardless of the rush up, but will slowly go up, fly slowly, and then show the speed and maneuverability in the state of level flight, the reason for this is that I am afraid that a pull up is not done well, and the aircraft will fall into a stall.

But the TM-9 aircraft that has just taken off has broken this convention, although it shows that the dry land pulling onion is not as perverted as those European and American fighters like 65 degrees and 70 degrees, but it is also close to 50 degrees, although the engine is located at the front end, compared with the rear engine, the center of gravity configuration of the whole aircraft is more reasonable, but the T-shaped vertical tail layout is easy to stall in the state of large angle of attack The law will not change.

Unless......

Several expert reporters glanced at each other, and one of them said in surprise: "Can their pilot control the plane so precisely?"

As soon as these words came out, without waiting for several other people to answer, the reporter who asked the question shook his head vigorously: "Impossible, the stall speed of the aircraft with a T-shaped vertical tail layout in the state of high angle of attack is 1 to 3 degrees, and it is impossible for a delicate person to control the control so finely." ”

Several other people nodded in agreement when they heard this, they were all senior media people in the aviation field, and they knew very well how difficult it was to control the angle of attack of 1 to 3 degrees......

"The TM-9 aircraft developed and produced by the Royal Aerospace Industries Corporation of Thailand has just taken off, and it 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's T-shaped vertical tail layout but dared to fly at a large angle of attack and pull onions on dry land, the commentary broadcast of the air show aircraft flight show slowly sounded.

"So it's fly-by-wire?"

"Oh my God, the TM-9 is fly-by-wire?"

"Thailand has actually used the technology on fighter jets to high-end business jets!"

"No wonder TM-9 aircraft with T-shaped vertical tail layout also dare to fly at a high angle of attack vertical climb, they have made all the flight envelope of the aircraft in the control system, the pilot only needs to control the joystick, and the rest of everything is handed over to the computer, I will say that His Royal Highness the Crown Prince of Thailand can not be so simple, such a set of fly-by-wire control is worth more than anything. ”

Media reporters and many aviation experts at the scene immediately discussed, and those rookie newcomers and pure spectators around them naturally wanted to ask what was the telex manipulation.

You must know that on the first day, the F-16 and F-18 in the United States were all fly-by-wire fighters, and there were live explanations and introductions during the air show, but they did not attract so much attention.

However, the TM-9 aircraft that appeared on the last day of the air show has attracted a lot of discussion and interest, and the reason is simple: the plane in the sky that is spinning and tumbling is the car of His Royal Highness the Crown Prince of Thailand, with its own aura of royal power, and naturally receives unimaginable attention.

In particular, some wealthy businessmen who think they are worth a good amount of money ask quite carefully, and the meaning is obvious, if they can, they also want to buy one, and go out to talk about business in the future, and point to the plane with their partners and introduce lightly: "This plane is the same as the crown prince of Thailand!"

That momentum, that card is immediately different.

"I knew that it was so popular, and I had to bring Mr. Guo here anyway. ”

Hearing many viewers around him ask about the telex control system, Lin Guanghua said with some regret, Zhuang Jianye nodded slightly, then shook his head and smiled: "However, I guess Mr. Guo has no interest even if he knows, our test is successful or popular, Mr. Guo can smile at most, say that this path is right, and then continue to be locked in the research room to engage in fighter jet fly-by-wire control, that is his old man's ultimate goal." ”

When Lin Guanghua heard this, he was stunned for a moment, and then nodded with a wry smile.

The Mr. Guo that the two are talking about is none other than Guo Xiaobo, the director of the Flight Control Research Institute and the chief engineer of the Fly-by-Wire Control System sub-project of Project No. 10.

Over the years, Guo Xiaobo has led the project team, starting from the UAV, and has made good progress in exploring the architecture and algorithm of the fly-by-wire control system little by little, but he has also encountered considerable bottlenecks, especially in the case of tight funds, and the transformation of the verification machine has become a headache for Guo Xiaobo.

Therefore, the aircraft platform based on experimental verification was put on the agenda.