"Please wait a moment, Academician Yang." Upon hearing Yang Wei's request, the operator on the other end of the red phone spoke seriously and solemnly, and immediately transferred to the Huangtianba Base Garrison Representative Office.
A few seconds later, Lin Jian's deep and powerful voice rang on the phone: "Hello, Academician Yang, I am Lin Jian."
"Representative Lin, please come to my place. There is an important matter." Yang Wei did not delay. After greeting him, he went straight to the point and informed the situation.
"Yes, Academician Yang, I will arrive in 3 minutes." As Yang Wei gave the solemn notice, Lin Jian was stunned for a moment, then reacted immediately and replied.
"Beep..." In an instant, the encrypted wired telephone communication that lasted for about ten seconds was disconnected, and a busy phone tone came from the microphone.
Yang Wei put the red phone back on the table, picked up the glass with cold water in his right hand, brought it to his mouth, took a sip to relieve his thirst, then put it back on the table and waited quietly.
There was silence in the office.
Time passed slowly, and three minutes passed.
"Dong dong!" A clear and loud knocking sound came from the light yellow door.
"Please come in."
Yang Wei looked at the door and said seriously.
"Squeak..." The light yellow office door opened gently, and Lin Jian, wearing regular uniform and carrying the rank of colonel on his shoulders, appeared and walked into the office.
The door then closed, and Lin Jian came straight towards Yang Wei.
"Academician Yang, what is the specific matter?" Lin Jian came to Yang Wei, showed respect, raised his right hand in salute, and then asked.
Yang Wei showed no politeness. He stared at Lin Jian in front of him with a serious face and said seriously: "About the fifth-generation fighter."
"Fifth generation fighter?"
After hearing the words, Lin Jian was startled for a moment, and his mind instantly thought of the bad aspects. His back straightened subconsciously, and his voice was three points higher, with a hint of solemnity: "Academician Yang, is there something wrong with Project No. 25? ?”
As the actual executor of the Transformation Plan, Lin Jian knows the basic information and overview of Project No. 25. The total investment amount of the entire project is as high as 650 billion yuan, and the confidentiality level has reached Level 1 Top Secret·Core. There are no more than two domestic insiders. The real content of the ten people is the fifth-generation fighter aircraft that Chengdu won the bid and is currently under development.
A genuine fifth-generation fighter jet, which is equivalent to the sixth-generation fighter according to Russian-made standards. The project was officially established in 2015 for research and development.
If there is a serious problem with Project 25, it will be a devastating blow to Chengdu Aircraft and the entire AVIC industry, and it will be even more bad news for the country and the Air Force.
"It's not Project 25. Project 25 is progressing very smoothly. It is a new fifth-generation aircraft solution that has undergone feasibility testing. The reason why I came to you is because of it."
Yang Wei shook his head, his face was natural and solemn, and he revealed a little information about Project 25. Then he changed the subject and said in a deep voice: "You have a tactical tablet with you, right?"
"Bring it."
Lin Jian nodded and took out the tactical tablet from the file bag he carried with him.
When Lin Jian was ready, Yang Wei immediately opened the confidential computer, extracted the Z-2 fifth-generation aircraft plan file listed as level three top secret, and sent it to Lin Jian's tactical tablet through face-to-face transmission.
"Beep!" A prompt sounded, and the tactical tablet showed that it had received a new confidential document.
Lin Jian clicked on the screen, entered his identity password, and waited for the system to confirm before opening the entire file.
In the next second, two fighter plane designs with different shapes suddenly appeared, and the contents of the files were displayed on the screen.
The first picture of the Z-2 fighter aircraft with the forward swept wing at its maximum sweep angle. Every part of the body is clearly visible, from the close coupling of the canard + front fuselage side strip to the forward sweep angle of the tandem delta wing. There is a horizontal tail with a camber at the end of the fuselage.
The entire fighter plane exuded a ferocious and aggressive look. Lin Jian just glanced at it, and his eyes were as if he had encountered a magnet, and he could not move away no matter what.
He finally moved his eyes away and moved downwards. When he saw the aerodynamic layout of the second diamond-shaped waverider with forward-swept wings retracted, Lin Jian felt as if he had been struck by lightning and froze in place.
Elegant, noble, and unparalleled in posture, the diamond-shaped waverider in the second photo is as intimidating as a queen.
Shocking!
Unparalleled shock.
"Academician Yang, this is... a variable forward sweep wing without a vertical tail?" After two seconds, Lin Jian tried to control his emotions and looked up at Academician Yang Wei sitting across from the desk. He opened his mouth and his throat seemed a little hoarse. .
Yang Wei smiled slightly, nodded and replied: "Yes, code-named Z-2, designed by my student Zuo Xue, what do you think?"
"Compared to the mediocre Z-1 fourth-generation aircraft plan, the Z-2 can be said to be very bold. It is the first time I have seen a vertical-tailless variable forward-swept wing aerodynamic layout plan, and it suits my taste." Lin Jian heard this and was not convinced. Knowing that it was designed by Zuo Xue, Zhou Hai's face subconsciously appeared in his mind, and he was not stingy with his praises, expressing his inner evaluation.
Z-2, a fifth-generation aircraft solution, is guaranteed to satisfy any pilot who takes a look at it.
The aerodynamic layout of the variable forward-swept wing without vertical tail is not the least bit more advanced than the aerodynamic layout scheme adopted by the current fourth-generation fighter aircraft.
Darling, this boy Zhou Hai is just unlucky. His little girlfriend Zuo Xue quietly came up with a brand new aerodynamic layout design for a fifth-generation machine.
"However, Academician Yang, although I am a layman in aircraft design, I also know the flaws in the forward-swept wing aerodynamic layout. How to solve the aeroelastic divergence?"
After praising him, Lin Jian glanced at Yang Wei, who had a smile on his face, sorted out his words, and put forward his thoughts: "When Russia gave up Sukhoi's Su-47 'Golden Eagle' plan, it was because aeroelastic divergence at high speeds could not be effective. Suppressed, the Su-47 cannot even maintain supersonic flight for more than three minutes."
Aeroelastic divergence.
Even as an outsider, Lin Jian knew the fatal flaw faced by this forward-swept wing aerodynamic layout.
Forward-swept wings have countless advantages, but if this problem is not solved, these advantages are meaningless in the face of the shortcomings caused by aeroelastic divergence, and they will never be practical.
It can be said that once the forward-swept wing solution is involved, any problems and difficulties encountered in the entire fighter development process are inferior to aeroelastic divergence.
The shortcomings caused by aeroelastic divergence can range from the damage of the fighter plane to the destruction of the aircraft and the loss of life!
"Yes." The smile on Yang Wei's face grew stronger.
"What?" Looking at Yang Wei's confident smile, this time it was Lin Jian's turn to be shocked again, his eyes filled with disbelief.
Surprised, shocked.
Lin Jian couldn't believe what he heard.
There is a solution to the fatal flaw of forward-swept wings - aeroelastic divergence - that has left countless aviation experts and aerodynamics experts around the world helpless.
