The concept of pods has gradually taken root in the hearts of the people.

The Su-27 has an electronic warfare pod, in order to make up for the lack of its own avionics, it has a special one on the wingtip, and this kind of navigation and attack pod is also quite important, the United States in the Iraq War ground attack, many aircraft are attached to this kind of pod, only to have the ability to fight at night.

In the past, the domestic technology was not enough to solve the problem of the pod, but now, everything is not a problem, and over the years, the development of the country has made everyone feel incredible.

"What do you think of our Thunder fighter?" Yang Gong continued to ask, the Thunder Dragon fighter has made its first flight successfully, and the future prospects are limitless, of course, Yang Gong is striving for perfection, and hopes that Qin Feng can put forward some more suitable plans, the characteristics of Chengdu are radical, if not radical, it is impossible to achieve the goal of catching up with the Western world.

"I have some ideas." Qin Feng said to Yang Gong: "Do you know the F-18E/F? ”

F-18 is the main force of the United States Navy carrier-based aircraft, especially after the F-14 Tomcat retired, but also by the United States Navy entrusted with the important task, they originally planned to build stealth attack aircraft, as a result in 1991 when the United States Department of Defense canceled the stealth carrier-based attack aircraft A-12 program, in this way, they chose F/A-18E/F as a transitional model.

This kind of aircraft is an improvement on the original F/A-18C/D fighter, in contrast, the F/A-18E/F has lengthened the fuselage and wingspan, increased the area of the wings and horizontal tail, increased the fuel load and weapons, and increased the range.

The power system is also replaced with the F404 engine modified from the F414-GE-400 turbofan engine, the Americans' strong technology is reflected here, in the case of the same volume, the power has been raised to the level of a single afterburner thrust of 97.9 dry bulls, if this engine is replaced by the Thunder, the performance of the Thunder will definitely have a reborn change.

However, what Qin Feng wanted to say was definitely not this, Yang Gong looked at Qin Feng and said, "What you want to say is, the edge wing it uses?" ”

The similarity between the two is the aerodynamic layout, both of which adopt the normal aerodynamic layout of the side strip wing with a medium aspect ratio, highlighting the strong maneuverability at medium and low altitudes and high subsonic speeds, but in terms of details, there are many differences between the two.

For example, the side wing is a new technology of the third-generation aircraft, and the side wing design can improve the lift-to-drag ratio of the aircraft at a certain angle of attack and improve the performance of the aircraft at high angles of attack.

Therefore, if you want to improve the performance of the aircraft, you must use a larger side strip wing, take the F-18 as an example, its side strip has increased from 5.2 meters to 7.2 meters in C/D, an increase of 134% of the area, this side strip wing can not only improve the maximum lift coefficient of the aircraft, take-off and landing capacity, but also greatly improve the maneuverability of the aircraft at large angles of attack, and the strong edge strip vortex greatly delays the occurrence and development of wing airflow separation.

It can be said that the success of this aircraft is inseparable from the edge wings.

Although the Thunder also uses side strip wings, like the F-16, the area of the side strip wings is not large.

Now, Lao Ba is already very satisfied with the Thunder Dragon, but if you want to continue to improve the performance of the Thunder Dragon, you have to start with this side wing!

"Add side wings to optimize the fighter's high angle of attack performance?" Yang Gong asked Qin Feng, and then nodded: "That's right, it's a good idea." ”

Yang Gong has always been bold, and at the same time, he is also careful, and the use of larger side strip wings makes the performance of the Thunder Dragon higher, which should be something to try!

However, this design will also bring new changes in aerodynamics, and increasing the edge strip will significantly bring the aerodynamic focus forward. Now, the Thunder is already a static and unstable aircraft, the aerodynamic center is in front, and the side bar is located in front of the center of gravity of the aircraft, and the contribution of the edge strip vortex lift and the wing upwash airflow caused by the side bar will move the aerodynamic center forward significantly.

In this way, it is a new difficulty for the control of the aircraft.

This is also the reason why the Thunder uses digital telex in the longitudinal direction, which is a static and unstable aircraft, which can only be tamed by digital telex, and the changes caused by the side strip wing are non-linear, and the writing of the flight control system is difficult.

However, Yang Gong didn't have the slightest worry about this, he was the most relaxed, after all, for him, what he was most familiar with was the fly-by-wire flight controller, and he was engaged in this.

Of course, it is not enough to only increase the angle of attack, but also to have enough head reduction moment, which means that the design has to be changed later, and at the same time, the edge bar will also cause a change in the center of gravity, bringing a series of problems, which is called pulling a hair and moving the whole body, which is almost a new design.

Afraid? Of course, don't be afraid, we can solve any problem in Chengdu!

In addition to the increase in the side strip, the air inlet can also use the results of its latest research, which is the kind of bulging air inlet to improve, save weight and improve performance, so that the nose can also become more round, and the nose can put a larger radar.

"Our Thunder, the thrust of the engine is still not enough, so, under the premise that the engine can not increase the thrust, weight reduction is an inevitable trend, in recent years, the international composite materials are quite popular, if the composite materials are used to reduce weight, the performance will be further improved, right?"

Yang Gong patted Qin Feng on the shoulder: "I strongly recommend that you go to our design institute to become an engineer, many test pilots, after coming down, will go to work as an engineer, your flight experience is the most valuable asset." ”

Qin Feng shook his head, engineer? Forget it, in fact, I don't have this plan at all, after all, it's okay to talk about it, it's still not enough to really rise to those complex calculations, if you can't fly, it's enough to watch others fly every day.

"Will the avionics of the Thunder Dragon use our domestic ones?" Qin Xue asked beside her.

The user of Xiaolong is Lao Ba, so the final choice is still in the hands of Lao Ba, and now the 01 test flight is a pneumatic verification aircraft, mainly using domestic avionics, radar and the like, or counterweights.

What does Lao Bus choose?

"We are confident that they will choose our radar, after all, the performance of our radar is no worse than that of foreign ones, and the compatibility is more advantageous." Yang Gong said.

There are many options for Thunder's radar, for example, Italy's FIAR's Grifo S-7 radar, Lao Ba is very familiar with this kind of radar, because they are traditional users of the Grifo series of radars, and this small radar has even been introduced into the production line and widely used in J-7P, J-7PG and other aircraft.

As for this Grifo S-7 radar, it is improved on the basis of the original, with better performance, for targets with a radar reflection area of five square meters, the search range is sixty-five kilometers, the tracking distance is forty fronts, and it can even track 10 targets at the same time and attack 2 of them!