What happened in Sijiu City, Jiang Yan was not clear in Shengjing, he is currently fully cooperating with President Xu to sort out all the information of the Zhan-6 aircraft, due to the addition of Jiang Yan, the speed of the entire data sorting is also speeding up a lot.

In order to organize the data and the production of aircraft parts at the same time, once the data is finished, it will be sent to the factory for production.

"Why are you worried about tomorrow's flight!" Jiang Yan, who stayed in the hangar and looked at the silver-white war eagle with mixed feelings, heard the voice behind him, and when he looked back, he found that Mr. Xu had also come here.

The battle 6 war eagle in the hangar is an aircraft produced according to Jiang Yan's collation of the materials of the Mao Xiong Kingdom, and all the parts and sizes produced on the aircraft are produced in strict accordance with the materials, including the metal used on the aircraft.

"You see, how beautiful this war eagle is, with him guarding the blue sky of our country, we can live a stable life. It's just a pity that this is not our own aircraft. Mr. Xu looked at this war eagle and stepped forward to touch it, and opened his mouth a little affectionately.

"One day, we'll build our own plane." Jiang Yan replied in an extremely affirmative tone.

The two of them stayed in the hangar for a long time, neither of them spoke, just watched quietly.

Coming out of the hangar, on the way back to the dormitory, Jiang Yan stopped there, looked at Mr. Xu and said: "Mr. Xu, why don't you use the alloy I produced, I calculated before, if you use the alloy I produced, the overall weight of this aircraft will be reduced by 20% compared with the previous aircraft, so that our aircraft can be loaded with more oil and ammunition, and our aircraft will fly farther and have stronger combat effectiveness." ”

Mr. Xu heard Jiang Yan's question, stopped, looked at Jiang Yan and said: "The research and development of the aircraft is a systematic process, even every part of the aircraft can not be missing, at present we do not have the ability to develop such an aircraft, the best way is to imitate and then develop, one step thoroughly, one step further." ”

"I have also considered the new alloy, you know, the aircraft is light, there are advantages and disadvantages, it may also bring a series of problems, and even the aerodynamic layout of the aircraft needs to be recalculated."

Mr. Xu said these words, Jiang Yan understands that it is not easy to design an aircraft, and it is also not easy to improve an aircraft, it needs to consider more, it is not just a matter of adding suitable things, the aircraft is a whole that needs to be considered in all aspects.

The first important thing in aircraft design is the aerodynamic layout, also known as the aerodynamic shape of the aircraft. This is the most important in aircraft design, ranking first, more important than the engine. The design principle of this aerodynamic shape is that the drag is small, the lift is large, the energy saving, the flexibility, the stability, the balance, the wind resistance, the sturdy, etc., if one of them is not passed, your aircraft may be scrapped.

The second is the internal structure, which is equivalent to the skeleton of an airplane. The aerodynamic shape mainly refers to the shape of the outer surface of the aircraft.

The third is the material. Of course, the lighter the material, the better. At the same time, it must also have strength, high strength, high toughness, high fatigue resistance, high weathering resistance, cold and heat resistance, and so on. Aircraft materials are all of the highest technology.

The fourth is the control system of the aircraft. Software and hardware control included. Hardware is all kinds of mechanisms and actuators. Such as solenoid valves, turbo rods, sensors, communications, instruments, servos, flaps, engines and so on. Software is a program that automatically controls functions.

Finally, there is the engine. Including the engine parameters to meet the standards and the position of the engine on the fuselage. The installation position of this engine is particular, which directly determines the stability of the aircraft when the engine is working.

There are many other subdivisions of the aircraft, such as landing gear, fuel tanks, oil circuits, cabin design, and so on. Each of these items is very important and cannot be taken lightly, otherwise it is likely to be an accident.

"At present, our air force lacks aircraft, and we can only produce a batch of aircraft for use, and follow-up improvements will be carried out soon." Mr. Xu then spoke.

"Brother comrade, don't worry, you always have to eat one bite at a time." When Mr. Xu finished saying this, he also patted Jiang Yan on the shoulder.

When I went home at night, Jiang Yan, who was lying on the bed, still couldn't sleep, and my mind was like a movie, and scene by scene began to flash.

In the previous life, this aircraft of the country was thoroughly studied on the Internet, and almost all the determinations were found by them one by one, and they not only found it, but also gave corresponding solutions.

Thinking of this, Jiang Yan glanced at Jiang Sirui, who was already asleep, turned over and got up, came to the study alone, and after gently closing the door, he came to his own space, and began to quickly search for all the information about this aircraft on the computer.

After calculations and analysis of all the data he had seen, Jiang Yan decided that the Demon Transformation 6 aircraft would start with the wings first.

All in all, Jiang Yan still feels that when the original Zhan-6III was improved, this improvement is currently the most suitable.

He actually changed the original airfoil design by tweaking the key parameters of the wing to achieve better supersonic performance. There are receding flaps on the inside of the trailing edge of the wing, the same as the MiG-17. In addition to the advantages of single-slit flaps, this kind of flap can also increase the wing area when lowered to further improve the take-off and landing performance, but the structure is relatively complex and can only be used for take-off and landing.

Due to the use of large swept wings, the reduction of the wingspan is equivalent to the reduction of the wing area behind the center of gravity, which causes the focus of the aircraft to move forward and reduces the static stability. The longitudinal maneuvering that occurs in flight is actually a manifestation of reduced static stability - because it causes the longitudinal steering torque of the aircraft to become smaller, and the pilot only needs a small rod displacement to cause a significant change in the pitch attitude of the aircraft.

The phenomenon of "fluttering" is due to the fact that the force of the aircraft stick is very light, and if the control stick is moved slightly, the flight state does not feel changed. However, when the joystick is moved to a certain position, the flight state suddenly changes and exceeds the required state (overshoot). To adjust this overshoot phenomenon, it is generally necessary to move the steering stick in the opposite direction, but there will be overshoot in the opposite direction. In this way, repeated corrections will lead to longitudinal instability, and even more correction will become more serious.

Again, there is a solution to such a problem, and that is to lengthen the rocker arm of the head of the hydraulic booster. This allows for better control of the aircraft.

However, Jiang Yan's purpose was not like this, his ultimate goal was to change the fully automatic leading edge slats and backward flaps.

In terms of its effect, the fully automatic leading edge slats and backward flaps are much better than the wing knives, which can effectively solve the stall problem caused by the wingtips of the fighter.

Jiang Yan wrote hundreds of leaves on the whole conclusion, wrote the problems in detail, and proposed ways to improve them. At the end of the thesis the plan for a "small war" was proposed.

This plan is based on the engine of the Zhan-6 aircraft to design a new fighter, in fact, he is a tribute to the former Zhan-12, the regret in the hearts of many military fans.

(End of chapter)