Take Off My Aviation Era

, The fastest update to take off the latest chapter of my aviation era!

Xue Weidong opened his mouth, wanting to say that I really forgot, but he also knew that he really said so, he can only be ashamed, so he laughed and patted the wing in front of him: "Judging from my experience, An airplane using this kind of wing can reduce the overall structural weight of the airplane. So, I don’t understand the parameters you just mentioned. Why add a good wing that can reduce the total structure? How to increase the take-off weight and load Is not obvious?"

Although Xue Weidong didn’t listen to Zheng Quanli’s words very much, he still had a general impression. So when he came out, Zheng Quanli was also dumbfounded. He said that this guy was a chicken thief. He clearly didn’t take what he said just now, but he just came to such a hand. Don't say, I can't help it.

This question was really too professional. Zheng Quanli couldn’t answer even if he broke his head. When he was thinking about how to deal with it, a familiar voice came from behind: “That’s because our wings are not very mature. Combining the wind tunnel test data of TY-2 with our TY-2 UAV platform, a demonstrator with an experimental nature. After all, the Sin Chew forces require a certain endurance at high altitude.

Although our wing is still immature, the total amount of structure has been reduced to some extent, the fuel load has been increased, and the advantages of supercritical wing in lift and the unique economy have met the basic needs of the army, but in the end It is an experimental verification aircraft, so we call this aircraft TY-2plus, otherwise it will be named TY-3 UAV. "

Suddenly someone came over. Not only was he not wearing a military uniform, but he also looked very young. Xue Weidong was very surprised. He looked at the man in confusion for a few times, then turned his head and was about to ask Zheng Quanli who was the man, he saw that The young man in the white Xingliang shirt suddenly reached out to himself and introduced himself very enthusiastically: "Hello, I am the person in charge of Ascendas Factory, Zhuang Jianye, you must be the leader of the aerial surveying and mapping team, right?

If the aerial surveying and mapping team needs drones for terrain surveying and mapping, I recommend the more mature TY-2 platform. After all, TY-2plus is a special case and expensive. If it is generally equipped, it is not cost-effective. The aerial surveying and mapping team wants to improve the battery life. If required, we can choose to install turbocharged engines imported from Sweden for you, so that under a load of 200 kg, our TY-2 platform can reach 6 hours of battery life..."

Let's go~~~ Zhuang Jianye held Xue Weidong's hand and began to sell the TY-2 drone from Tengfei Factory. Zheng Quanli at the back heard that Zheng Quanli was holding his forehead straight, and Xue Weidong at the front was even more staring. If not, The front spectacles are blocked, it is estimated that they may pop out.

Why did you start selling products to yourself? Wait, are we two familiar?

"Um... Xiaozhuang, right? Your TY-2..." Although Xue Weidong was a little confused by Zhuang Jianye's familiarity, he was from the headquarters after all. I have never seen anything before. After being uncomfortable, he immediately recovered his calm, so he interrupted Zhuang Jianye's chatter and patted the drone around him, but it was embarrassing because the name of the drone in front of him was so complicated that Xue Weidong didn't even remember it.

Zhuang Jianye reminded with insight: "plus, TY-2plus."

"Yes, Plath... Haha, the name is very special, but it has the potential to be in line with international standards. Just like the supercritical wing you use, this is the first time I have seen it in China. I can see that you are here. I have obtained a lot of information abroad, but I don’t know if you are taking the American route or the European route?"

Supercritical wing is an advanced wing type that prevailed in Europe and America in the 1960s. As we all know, the pressure on the surface of the aircraft is different, and the speed of sound of the air on the surface of the aircraft is also different. The flow rate is also different.

In other words, the Mach number of airflow across the surface of the aircraft is not a fixed value.

This is like swimming, the head and hands must encounter different resistance, and the Mach number on the surface of the aircraft is also the same.

In some places, the airflow accelerates, the pressure becomes smaller, and the speed of sound also becomes smaller. The Mach number in this place becomes higher, and vice versa, the Mach number becomes lower.

During the continuous acceleration of the aircraft, the Mach number of these points will continue to increase together. Among them, the point with the largest Mach number reaches a critical value, which is the so-called critical Mach number.

That is to say, the aircraft as a whole does not exceed the speed of sound, and some points on the surface of the aircraft already exceed the speed of sound.

At this time, something called shock wave resistance will be generated on the surface of the aircraft, which consumes the power of the aircraft and affects the speed and endurance of the aircraft.

The supercritical wing was born to solve this problem. At the end of the 1960s, the National Aeronautics and Space Administration conducted wind tunnel tests on different wing shapes and found that the first part of the aircraft wing to exceed the speed of sound is usually on the wing. The curved surface of the surface.

The air flow in this place is accelerated very fast, the pressure is relatively small, and the speed of sound is relatively low. The Mach number in this place is the largest, so they proposed a kind of obvious arc that does not have the general airfoil, so that the velocity and pressure distribution are more uniform. .

The head and tail have also been adjusted accordingly. The head is smoother, the tail is sharper, and there is a recessed part on the bottom edge. The purpose of this design is nothing more than one, which is to make the air pressure on the upper and lower surfaces. All become more even.

In this way, the supercritical wing can achieve greater speed without exceeding the speed of sound. With speed, the economy will naturally be very good, and the total structure of the aircraft will be reduced accordingly, so that the weight of the aircraft will be reduced. Under the circumstances, not only does it have to go further, but it can also carry more cargo or weapons~www.wuxiaspot.com~ So as soon as supercritical wings appeared, they were sought after by European and American aviation giants, especially in the field of civil aviation. Even more, low fuel consumption is always the goal pursued by civil aviation aircraft, and the supercritical wing fully meets this demand.

So since the 1980s, European Airbus took the lead in applying supercritical wings on A300 passenger planes. Boeing, McDonnell Douglas and Lockheed followed suit. Soon European and American civilian passenger planes began to use more economical fuel consumption and larger The load swept the international market, and the Soviet civil airliner that intended to enter the field to take a share of the pie was firmly under pressure, thus establishing the European and American monopoly in the field of large civil aviation airliners.

Of course, while Europe and the United States are jointly suppressing the Soviet civil aviation passenger aircraft, their internal competition is also very fierce, especially on supercritical wings. Although all the technologies come from NASA, after more than ten years of development, The European route represented by Airbus and the American route represented by Boeing have long been formed.

That's why Xue Weidong asked. After all, the two routes have their own strengths. Xue Weidong would like to know which one is used by Ascendas?

Zhuang Jianye smiled brightly and was very proud of this. He also patted the TY-2plus in front of him: "We are using the Chinese route."