The first kiss, which is a mysterious and special existence, only exists between two people who fall in love for the first time, which is jerky and beautiful, sacred and solemn.

Especially for the two who are only 20 years old.

The most important thing is that dozens of meters away, the founder of the motherland of the white sculpture quietly stares at the two and witnesses it, which is of great significance.

Let go of all identities and baggage, hug and kiss.

Twenty-year-old love,

When it is youthful and lively,

When it is sweet and greasy into the heart,

When it is carefree,

When it is intimate, it is not disturbed by identity, and it does not need to care about the eyes and opinions of others.

The light touch, like an electric shock, made the two of them tremble.

The kiss was inexperienced, unskilled, jerky and clumsy, but happy, happy, and contented.

A glutinous and soft and pleasant meaning, like a clear trickle, constantly impacted his mind, warm and moist into his heart, and Zhou Hai also felt a faint hint of red wine.

However, in just a few seconds, Zhou Hai's face turned shamefully red, and the girl in his arms became slightly short of breath.

For a long time, kissed.

"Uh, this, I ......"

Zhou Hai scratched his head, looking at Zuo Xue, whose ears were red and hot, his mind was like a fragment, and he didn't know what to say.

this

this

this

Mom, there is a physiological reaction, how to explain it?

"I'm almost done today, let's go, I still have something to show you when I go back to the hotel, the work I designed during this time."

Zuo Xue was short of breath, glanced at Zhou Hai, did not blame, and quickly calmed down her inner emotions, straightened out the slightly wrinkled white dress, pulled Zhou Hai and walked back.

Zhou Hai was a little curious: "The work? ”

"The aerodynamic layout and shape design of the fourth-generation main fighter, as well as several design concepts for future fighters, are all original, of course, only based on my thoughts." There was a hint of pride in Zuo Xue's words.

"If you can, talk about it, don't talk about confidential content."

Zhou Hai was interested, but he wanted to see how this girl had learned, and whether she really understood the design concept and aerodynamic layout of the fourth-generation stealth machine.

20-year-old Zuo Xue has already been able to study the fourth-generation aircraft?

Somewhat unexpected!

This girl is extremely talented, and Zhou Hai, who can observe the size of the golden ball, will never deny it, and can be sure of this, the dazzling golden ball in her mind is as big as an egg, which is almost the same as Academician Yang Wei that she saw at first sight, and even slightly exceeded.

However, being gifted and evil does not mean that you have the same strength.

Fourth-generation aircraft!

The most cutting-edge and cutting-edge fighters in the world today, even Zhou Hai, have not touched it once, and can only watch it up close, let alone the driving experience.

"There's nothing to keep secrets, just I was working on it in private, and I just got a concept sketch. As far as the current stage is concerned, 2020 and beyond belong to the era of stealth, stealth performance has become the most important performance indicator of a fourth-generation fighter under development, the situation perception ability is second, supersonic cruise and super-maneuverability are the third, fourth, I am based on Chengfei's J-20 and Shenfei FC-31 two fighters as prototypes, absorb a certain degree of advantages, and design a new fourth-generation aircraft in accordance with the core idea of stealth. ”

Zuo Xue subconsciously looked around, and after confirming that there was no one, she leaned on Zhou Hai, staring at the neon lights flashing in the dim sky, and slowly said the design content that was not secret:

"Single-seat twin-engine heavy aircraft, double camber and vertical tail, the aerodynamic layout adopts a medium trapezoid, cancels the canard, adopts a binary rectangular vector engine, and eliminates the wing body transition section, as well as the arc transition area on the left and right sides of the fuselage, the radar reflection lobe is reduced to 7, the manufacturing materials and stealth coating are consistent with the J-20, the preliminary estimate of stealth performance meets the design requirements, and the forward radar reflection cross-sectional area is estimated to be the same as that of F22, but the most helpless thing is that the comprehensive aerodynamic shape of this fighter is similar to that of mainstream fighters, Mobility is inferior to the J-20, on par with the F-22 and Su-57, and superior to the F-35. ”

At the end of the words, I was a little helpless.

Talking about the latest works that condense the crystallization of his wisdom and painstaking efforts, Zuo Xue can be said to be endless, saying all these things.

Stealth!

Fourth-generation fighters rank first and most critical performance indicators, there is no one.

Without stealth performance, even if it has super maneuverability, supersonic cruise, and superpotential perception, it can only be reduced to the quasi-fourth-generation level, and will never be able to cross the threshold of the fourth-generation aircraft.

Regarding the strength of stealth capabilities, 80%-90% is determined by the overall aerodynamic layout, and 10%-20% is made up by stealth coatings, and the wisdom and hard work of aircraft designers dominate.

Or call it the magic of wings!

In addition to stealth, the second is situational awareness, the strength of air-based long-range detection and identification of the enemy, which determines the combat performance and actual combat effectiveness of a stealth fighter, but this belongs to the hardware foundation, without a strong cutting-edge airborne radar and detection equipment, it is simply unable to meet the requirements.

"Forward stealth and maneuverability are both equal to the F-22?" Zhou Hai glared and smacked his tongue a little.

The girl is not simple, it seems that she has really eaten it through?

Reduced radar lobes, typical camber twin vertical tails, single-seat twin-engine, mid-section trapezoidal wing design, the most suitable for stealth performance of the binary rectangular vector engine.

This fighter does not emphasize mobility, only focuses on stealth, gradually amplifies and strengthens it, plays the role of stealth as the king, and serves as the core 'kicking' mission in modern warfare.

In the darkness, a thousand miles of raids, one blow will kill.

The enemy dies, and he does not know how he died!

Zuo Xue raised her proud little head slightly: "Of course, F-22, as the world's first stealth fighter, has a lot to learn from and reference from the field of aircraft design and aerodynamic shape, and it is also the first and most important challenge object, if the performance of the new fourth-generation aircraft is not aimed at equaling or surpassing F-22, then what is the point of designing a new fighter?" ”

At the same level, the concept and significance of weapon design is to outperform or equalize the opponent, weaken its performance advantage, and improve its own chances of winning the war.

If you don't take this concept as the core, what is the point of developing a backward weapon?

Waste of time, waste of resources.

In addition, the design of a new type of weapon should also pay attention to timeliness, fully consider the various situations that will be encountered in the war, conform to the core design idea, and be close to reality and be strict and cautious.

As far as the fighter is concerned, Shen Fei's J-11B lagged behind as soon as it was developed and could not keep up with the mainstream development of the times.

"Do you have a name for your work?" Zhou Hai smiled and grabbed Zuo Xue's shoulders and said curiously.

"Yes, my name is Z-1, you are Zhou, I only left, take the first letter of the surname, but unfortunately this is just a conceptual design, some idealization, plus the cancellation of canard wings, if you want to actually develop it, it is estimated that you will have to go more than ten years later." Zuo Xue said.