Super Weapon Swap System

If we say that we have accumulated a lot of data on the aerodynamic layout, which is a valuable asset, the flight control rate is even more envious.

If you want to tame the canard fighter, you must get on the digital telex.

Ordinary aircraft are operated by hydraulic pressure. Different air densities at low altitude and high altitude lead to different lever amounts. All these require the pilot's technology. If it is controlled by telex, it can reach the same level by modifying the control rate.

For another example, the engine refueling door increases the power. In addition to increasing the speed, the aircraft will climb because of the large lift.

But the telex control, the refueling door, only accelerates, not climbs. That's the difference.

It can be said that telex control greatly simplifies the operation of the aircraft and reduces the difficulty of the pilot, but at the same time, this control mode needs to understand the flight control rate.

Even if they have the F-16, adopt digital telex, and can obtain the source code, it will not work, because the aircraft is different. There is no comparability between the duck layout and the normal layout, so they must study the control rate again.

In history, the Gripen fighter developed by a certain country dropped its prototype because of a problem in the control rate. It is said that they just used the flight control of the eagle country to modify it. It's a hell if there's no accident.

The duck layout, the duck layout and the flight control rate are much the same, and only need to be carefully modified.

Does China have the technology of digital telex?

Of course, look at the current j-14. Digital telex has been adopted for pitch operation in the longitudinal axis direction. This is an example.

Hearing this, they were completely moved.

Of course, they will not immediately put forward the idea of further cooperation. They must go back and discuss what kind of price they are willing to pay. David is the smartest.

They studied the wooden model back and forth repeatedly. Even a small detail would be analyzed for a long time. They completely forgot that they came to see super seven.

Qin Guan, Tu Lao and others were watching. Tu Lao at this time admired Qin Guan very much. Just relying on a wooden model, he could deceive the people of the kingdom of David!

"The canard wing is not far from the main wing," continued Rafael.

The layman watched the excitement while the expert watched the doorway. When the other party said this, Qin Guan knew that he must have been a pneumatic student, and immediately asked the most professional question.

In the duck layout, the effect is different from that of heaven and earth according to the distance between the duck wing and the main wing. This is divided into short-range coupling, medium-range coupling and long-range coupling.

For short-range coupling, the rear of the canard wing and the front of the main wing almost coincide, which represents the gust of Jiguo. This layout uses the favorable interference generated by the detached vortex of the front wing through the wing to delay the wing stall, obtain a large lift at high angle of attack, and increase the stability in the post stall flight state.

Therefore, matching with the wing of delta wing through short-range coupling layout can reduce takeoff and landing distance, increase maneuverability, reduce aircraft overall size, reduce weight and reduce cost.

However, it has great resistance in supersonic flight. For the j-9, it mainly needs supersonic interception, which is certainly impossible to use.

For long-distance coupling, the distance between canard wing and main wing is quite long, the mutual interference is much simpler, and the matching of wing surface parameters is relatively easy.

Therefore, the main function of the canard wing is to generate a lift. The rear main wing can no longer use the vortex generated by the canard wing. To put it simply, it is a control surface. The most typical is the "typhoon" fighter.

In the duck layout of the Han Dynasty, the distance between the front and back is not far or close, there is no overlap, and there is no eight pole can not hit. This is the medium-range coupling, which is of course the result of comprehensive consideration.

But now, of course, we can't tell these secrets with the people of David in front of us.

"Sorry, these have involved our secrets," Qin Guan said. "Now, let's go and have a look at our j-14 fighter. It's the protagonist."

The staff of the kingdom of David looked at the wooden prototype reluctantly. At this time, it had been covered with canvas again.

"The biggest feature of our j-14 is its low cost and moderate performance. In short, it is a low-cost multifunctional fighter." Qin Guan began to introduce it when he came to the front of chao-7.

In fact, from the present point of view, this aircraft is definitely a good product. It adopts the normal aerodynamic layout and side strip wings, which effectively improves the performance at high angles of attack. The bulge of the two inlets is also the most frightening. The lines of the whole aircraft are smooth, reflecting the good manufacturing technology and the clean skin, It also represents that it has broken away from the level of shoddy workmanship in Xiong Guo.

"Now our radar personnel are developing new functions. When they are integrated, they are said to be very useful for ultra-low altitude penetration. What is it called..."

Qin Guan deliberately pretended to be thinking in his brain, and the scholar, who translated at the same time, almost worried the people next to him. Lafar couldn't help but say, "is it synthetic aperture function?"

"Yes, it is!" hearing the word translated by the scholar, Qin Guan immediately patted his thigh: "it is said that it can be linked with the flight control to control the flight altitude. Once there is an obstacle in front, it can climb automatically."

The j-14 is a low-cost fighter, but it uses digital telex in pitch. What's the use? It can be linked with the navigation system to realize ultra-low altitude flight!

Qin Guan knew that these people of David needed this technology most.

Lavi in the David plan mainly performs close air support and battlefield interdiction tasks, followed by air defense.

In other words, Lavi is mainly used as an attack aircraft to replace the old McDonnell Douglas A-4 skyhawk, McDonnell Douglas F-4 ghost II and AVIC's lion cub fighters serving in the Israeli air force.

Even now, their single seater Lavi still plans to use f404 turbofan engine, which is almost the same as the current j-14.

But then they found that it could not meet the needs of future development, and chose Pratt Whitney pw1120 engine with greater thrust. The higher thrust makes Lavi comparable to the F-16 in service with the Israeli air force.

Thinking of this, Qin Guan suddenly found that he had ignored a problem. Even if the funds were in good condition, as well as the military aid of Eagle country and the air force expenditure of David country, I'm afraid it was not enough to support the two projects?

If they have introduced the j-14 fighter and the production line, what about their self-developed Lavi fighter?

How do they balance?

It's hard to imagine. Just wait until the meeting and set their words.