The third-generation aircraft began to pay attention to the use of vortex lift, the shape of this aircraft, but also more and more science fiction, compared with the previous simple fuselage wing tail with building blocks, the wing body fusion makes the aircraft look more beautiful, the two sides of the extended side strips, reflecting the latest achievements in aerodynamics.

The shape of the Su-27 is so beautiful, it far exceeds the F-15, in fact, in essence, the aerodynamic shape of the F-15 is the most conventional, not even the edge strips, but the performance of the F-15 is still very advanced, this is because the United States has first-class engines and first-class avionics.

In the aviation system, there is a truth that as long as the engine is powerful, the bricks can fly into the sky, and the engine technology of the United States is the most powerful, so they do not need to think of all kinds of special means to make the performance of the aircraft achieve a leap, which is difficult for other countries to match, even the Soviet Union.

Take the third aunt as an example, although this engine is also a 12-ton thrust high-thrust engine, The thrust-to-weight ratio is also 7.8, but under the standards of the Soviet Union, this thrust-to-weight ratio is in a dry mass state, after adding all kinds of lubricating oil, the thrust-to-weight ratio is reduced to below 7, in addition to the thrust-to-weight ratio, fuel consumption rate, life, can not be compared with the F100 against the sky, as for later, the Americans have advanced F119, it is even more alien technology in general, other countries can not catch up at all, even later Russia, are unable to come up with an engine with a thrust-to-weight ratio of 10.

What to do when the thrust of the engine is insufficient? Naturally, it is the use of aerodynamic design to make up for it, the popular duck layout in Europe, and the Soviet Union's wing-body fusion, in fact, are all because the engine is not powerful.

Of course, the excellent aerodynamic layout has a great impact on the performance of the aircraft, and now a small tail vertebrae has a lot of knowledge inside.

"Our fighter has an advanced aerodynamic layout, and extensively uses vortex to improve lift and improve the performance of large angles of attack, but the vortex airflow formed by the airflow through its body will be broken in the tail, which will have an adverse impact on the flight. Simonov explained.

Why? This tail vertebra is because of the problem found in the wind blowing tunnel, the last remedy.

"At the same time, our two engines are far apart, and the ejection of the tail jet flow between the engines will cause great flight resistance, and the impact of low-altitude flight is particularly serious." Simonov continued: "In this way, we placed a cone between the two engines, with the tip of the cone until the fusion of the jet air flow of the two engines, filling the low-pressure area behind the flight and reducing drag. ”

The tail is parallel to the twin engines, using a double vertical tail, which is the aerodynamic layout made by the MiG-25 first, and the tail is parallel to the twin engines, there are also different schemes, are the two engines close together, or far away?

The MiG-29 is close together, so there will be no problem of this resistance, this is because its body is not large, and when it is juxtaposed, there will be a problem, that is, once it is attacked by a missile, one engine is destroyed, and it is easy to lead the fire to the second engine, and after both engines catch fire, the plane will definitely crash.

If the two engines are far apart, set up an isolated firewall, you can effectively avoid this situation, among which the F-14 Tomcat fighter is more extreme, the two engines are one meter apart, the distance is large enough, and it will definitely not affect each other, but once an engine loses thrust, then, the yaw moment will be very large.

There is also a gap between the two engines of the Su-27, and this interval fills the gap through such a cone, which is also an original masterpiece of the designers.

Moreover, due to the large space of this tail cone, some equipment can also be placed, in addition to the parachute, they also plan a rear-vision radar, and infrared jamming bombs can be installed on both sides of the tail cone.

Why choose a heavy fighter? The advantage of a heavy aircraft is that the space of the fuselage is very large, so the potential for modification is also very large, and after the new equipment, you can find a place to stuff it at any time, if it is a light aircraft, it will not work, every inch of land is expensive, and the potential for modification is very limited.

"The aerodynamic layout of the Su-27 is the most advanced, it is precisely because of this aerodynamic layout that we can fly out of a series of super-maneuverable maneuvers, at the Paris Air Show, our Cobra maneuver, it attracted the attention of the world, this time you came, we also prepared a wonderful performance, including this Cobra maneuver." Simonov continued.

The visit to the factory is part of the inspection, after the visit, it is the air show, after the end of the air show, it is the introduction of various aircraft data, after all, since this aircraft has been decided to sell to China, the aircraft is open to China, and all kinds of data are to be introduced to them.

For example, the most important engine on the plane, the welding of many parts and components are carried out in special equipment, which is full of inert gas, and workers wear protective clothing similar to spacesuits to weld, these processes are extremely confidential.

Without advanced technology, it is impossible to create advanced fighters, even if the Chinese are the best at copying, they import this kind of fighter, they will stop because of the lack of advanced technology, they cannot imitate this aircraft.

Simonov is sure of this.

Test flight? Hearing Simonov's words, Qin Feng suddenly asked, "So, is it Comrade Pugachev?" ”

In fact, the Sukhoi Design Bureau is the most famous design bureau of the Soviet Union, gathering the elite of the entire Soviet aviation industry, and there are many famous test pilots, such as the chief test pilot Vladimir Ilyushin, for example, the T-10-17 damaged part of the wing and tail during the test flight, Nikolai Sadovnikov who flew back and so on, every test pilot here is a national treasure, and they are all old-timers who make Qin Feng envy and respect.

However, if you want to say that the most famous, it must be Pugachev, after all, the Cobra maneuver of the Su-27 was flown out by Pugachev.

The last time he came, Pugachev was still flying carrier-based aircraft of the Navy, and now, is he in Komsomolsk?

"That's right, it's Pugachev." Simonov nodded and said, "He is very close to our Chinese friends, so this time he came here to give our friends a flight show." ”