Restarting the national strategic deception plan means that the country has reached the most important critical moment and urgently needs precious and scarce time.
Endangered.
Yes, now we have reached a critical juncture. Whether the fifth-generation fighter aircraft, which symbolizes a new generation of cutting-edge weapons, can be successfully developed depends entirely on graphene composite materials.
Must deceive, must deceive.
If Americans don't know, it's best not to let the other side know.
If the Americans knew about it, they would disrupt and hinder it as much as possible.
"Finally, we need to evaluate the deep application potential of graphene and start to promote the large-scale preparation technology of graphene. The graphene production line with an annual output of 20 grams is far from meeting the demand. We cannot rely too much on strategic deception plans. To make iron, we need to be strong ourselves."
Yang Wei's tone softened, and he returned to the scientific research route to make relevant arrangements. He stared at Lin Jian, who represented the army, and said solemnly: "That's all for now. The information exchanged this time is top secret. Colonel Lin, you need to inform the army immediately. We Your time is very precious.”
Time does not wait for me, every second counts.
"Okay, Academician Yang, is there anything else?" Lin Jian, who already understood the urgency of time and the importance of graphene materials, immediately nodded in agreement and asked again.
"No, Colonel Lin, you go ahead. I'll write the letter and give it to you." Yang Wei shook his head and responded.
"yes."
Lin Jian did not dare to delay, stood up and paid a military salute to Yang Wei, then turned and left, preparing to inform his superiors.
The office door opened again, then closed again.
Inside the house, there was silence.
"Graphene composites will definitely bring about a revolutionary change in the field of aviation materials. From a basic research perspective, the upper limit of carbon fiber composites is much lower than that of graphene composites. Not only forward-swept wing models will benefit from this, but also the existing aerodynamic layout The use of graphene composite materials in Project No. 25 will also greatly increase the overall performance, and Zuo Xue deserves the first credit."
With his right hand, he picked up the half-cup of cold boiled glass and took a sip. A chill flowed through his dry and hot throat. Yang Wei fell into deep thought. He thought about it and came to a conclusion. Then his eyes turned to the confidential computer screen. The Z-2 fifth-generation aircraft plan, his eyes flickered: "Variable forward-swept wing without vertical tail... Give it a chance. This plan is very radical. Let's see if it can work. If it does, it's good. If it doesn't, just focus on the forward-swept wing." Experimental exploration in the field of forward-swept wings is currently limited to aeroelastic divergence. I don’t know if there are any good things that have not been discovered in the deeper layers, so I would like to take advantage of this opportunity.”
Chance.
Yang Wei wanted to give Zuo Xue a chance, or rather give the Z-2 fifth-generation machine on the computer screen a chance.
The variable forward-swept wing without vertical tail is a more radical aerodynamic layout plan than the pure forward-swept wing design, but it generally meets the performance requirements of fifth-generation aircraft.
The advantages of the forward-swept wing aerodynamic layout mainly lie in high lift-to-drag ratio, high maneuverability and control stability. It is suitable for subsonic flight, completely overcomes the problem of wingtip stall, and has extremely high aerodynamic efficiency.
In the sub-transonic stage, the forward-swept wing design is almost invincible, giving the fighter aircraft unprecedented maneuverability and combat effectiveness.
However, with every gain comes a loss.
In supersonic flight, shock wave drag causes the supersonic maneuverability of forward-swept wings to drop significantly, but the overall performance is far inferior to that of swept wings.
To sum up in one sentence, the faster the flight speed, the lower the forward-swept wing maneuverability.
This is true for supersonic flight, let alone the hypersonic stage.
In the field of hypersonic speeds, there is a situation that is completely contrary to common sense in aviation - sub-transonic and supersonic speeds regard shock waves as their top enemy and delay the generation of shock waves as much as possible, while hypersonic speeds require the help of shock wave resistance.
Waverider.
What is a waverider?
An aircraft that rides on shock waves.
The forward-swept wings simply do not meet the requirements for hypersonic flight. If they are forced to advance, the aircraft will be destroyed and everyone will die.
However, the aerodynamic layout scheme of variable forward-swept wings without vertical tail proposed by Zuo Xue can effectively make up for the shortcomings of forward-swept wing aerodynamic layout in supersonic flight and hypersonic flight.
In the sub-transonic speed stage, the grazing angle is the largest, and it has ultra-high maneuverability and combat capabilities.
In the supersonic flight stage, the sweep angle decreases, reducing the flight shock wave resistance and achieving supersonic flight.
In the hypersonic stage, the sweep angle is completely reset to zero, the wings are folded in, and the aircraft body cleverly forms a rhombus waverider, using shock wave resistance to achieve hypersonic cruise at Mach 6 flight speed.
In Yang Wei's view, the Z-2 fifth-generation aircraft plan proposed by Zuo Xue is not only bold and radical, but also has design indicators and performance that are much higher than those of the ongoing Project 25, which he himself is responsible for.
Among other things, the hypersonic cruise speed indicator of Project 25 only requires entry-level Mach 5, and the sub-transonic performance is far lower than Zuo Xue's Z-2 fifth-generation aircraft plan.
Does this count as the apprentice catching up with the master?
Thinking of this, Yang Wei couldn't help laughing, and then fell into thinking again, considering the situation of the Z-2 fifth-generation aircraft plan: "The Z-2 fifth-generation aircraft plan can be established internally first, and the project budget is tentatively set at 10 million. Find the right position, do preliminary research, and then go to the Air Force after completing the theory."
As the soul of Chengdu Loma, Yang Wei, who holds the position of deputy general manager of AVIC and is an academician, has the authority to establish an internal new aircraft project.
Regarding the funding issue for the new aircraft project, Chengdu Aircraft can raise its own funds in the early stages without the need for state funding.
After setting up the project, find the correct positioning, do preliminary research, and wait until the theoretical design of the Z-2 fifth-generation aircraft plan is completed, then you can go to the Air Force.
Does the Air Force really need a forward-swept wing fighter?
Probably not needed.
A flashy forward-swept wing fighter is far less practical than a mature and reliable swept-wing fighter.
However, the Chinese Air Force urgently needs a fifth-generation fighter that meets the strategic needs of "both offense and defense"!
Project No. 25 originated from such a demand, as did the Z-2 fifth-generation aircraft plan.
"Ta-ta-ta..."
The sound of keyboard tapping sounded, echoing in the quiet office.
After deciding on the steps, Yang Wei opened the confidential computer and clicked on the Chengdu Aircraft Design Institute program. When the program popped up the import-side identity verification screen, he immediately entered the dynamic verification password, passed the verification, and entered the Chengdu Aircraft Design Institute management system with the highest authority.
After the screen conversion, all departments and company projects covered by the entire Chengdu Aircraft Design management system were displayed on the screen for Yang Wei to view.
The five core departments of General Department, Aerodynamics Department, Structure Department, Flight Control Department, and Avionics Department rank first, followed by more than 100 second-tier departments such as electrical, instrumentation, and environmental control.
The company has countless projects under development, which are dazzling. The J-20 Veyron and the J-10D Fire Dragon are impressively listed, ranking first and second.
