Genius is just the threshold for me!
Chapter 199 J-16D Power Supply Scheme
"It should be ready for test flights in July..."
Wang Xingguo watched Lin Dong leave, and the laboratory door close automatically. He turned to look at the document in his hand, noticing the 260 kilowatts of electronic warfare power and the electronic warfare radius of 450 kilometers and 500 kilometers. A hint of anticipation and excitement appeared in his eyes.
"We can have our own electronic warfare aircraft now..."
As Chengdu Aircraft Industry Group (CAC) 001, he is a cornerstone expert in the field of domestic aircraft.
Wang Xingguo has participated in many discussions on the construction of the domestic air force combat system, and has also participated in every discussion on external air situation in the past twenty years.
He knew very well what a fully powered electronic warfare aircraft meant.
This means that the situation a decade or so ago, where the enemy could expose and paralyze the entire southeastern defense line with just one electronic warfare aircraft, will no longer occur.
Even if the enemy sends electronic warfare aircraft again in the future, we will have an ace to deal with it.
This also means that the entire domestic air combat system can be given wings in the electronic field and take another leap forward.
At that time, whether the J-16D and J-20 are used together, the J-20 will be in front for stealth penetration, while the J-16D will be in the rear for electromagnetic suppression.
They still used J-16D fighters to forcibly clear the way, providing electronic cover for a group of conventional aircraft such as J-10 fighters and H-6 bombers, creating a kind of stealth-like safe zone.
Alternatively, it could interfere with and suppress the enemy's air defense systems and radars, creating an environment for its own missiles and artillery shells to accurately penetrate and hit their targets.
Even deploying all pods could directly paralyze all military and civilian wireless communications within a radius of 500 kilometers, covering more than 70 square kilometers, potentially dragging a country or region back from the modern communication and information society of the 21st century to the industrial society before the advent of wireless communication in the 19th century.
Such an electronic warfare aircraft can do so many things.
It's like a super auxiliary system covering a range of thousands of kilometers.
With it, it's not a dream to increase the overall strength of the domestic air force by 100%, nor is it a dream to increase its deterrence on the conventional battlefield by 100%.
Seeing Wang Xingguo's excited expression, Su Ruohua smiled, but quickly thought of something and asked seriously, "What do you plan to do with this electronic warfare equipment? Chengdu Aircraft Industry Group still can't do without the support of China Electronics Technology Group Corporation, right?"
If we insist on doing it ourselves, it will be difficult to get the cooperation of the power company for other production projects in the future.
Chengdu Aircraft Industry Group's mission is not only aircraft research and development, but also very important production tasks. In fact, it can be said that 90% of its work involves aircraft manufacturing.
Whether it's the J-20, J-10, WZ-8, J-1, or spare parts for the JF-17 Thunder fighter jet...
As long as it involves manufacturing, it is necessary to use various military-grade radars, military-grade electronic equipment, and military-grade electronic components.
And almost all of these things have to be provided by the electronics company.
Chengdu Aircraft Industry Group's laboratories and factories have the technology to meet some R&D needs, but it's simply unrealistic to expect them to meet the entire production cycle.
"Engineer Wang."
Xu Ziming, who was standing to the side, also looked over and joked, "Why don't you sacrifice yourself this time and let Chief Engineer Chen beat you up to vent your anger? Anyway, Chief Engineer Chen is already over sixty years old, so beating someone won't hurt too much."
"Keep a close eye on your work, including final design verification and settlement, matching of technical processes, and simultaneous manufacturing of related components."
Wang Xingguo glanced at Xu Ziming and calmly said, "If the delays in your R&D department and manufacturing assembly department cause the J-16D to fail to roll off the production line and test fly in July as Xiao Dong said, I will consider returning Xia Gong to Xi'an Aircraft Industry Group."
"The Kunpeng-20 large transport aircraft successfully completed its maiden flight on the 26th of last month. During the celebration at headquarters, they directly used their credit to accuse Chengdu Aircraft Industry Group of poaching our personnel..."
talking.
Wang Xingguo shrugged and said confidently, "As for electronic warfare equipment, my hometown, Chongqing, has its own ingenious plans."
Sigrún has taught at the Iceland University of the Arts as a part-time lecturer since and was Dean of the Department of Fine Art from -. In – she held a research position at Reykjavík Art Museum focusing on the role of women in Icelandic art. She studied fine art at the Icelandic College of Arts and Crafts and at Pratt Institute, New York, and holds BA and MA degrees in art history and philosophy from the University of Iceland. Sigrún lives and works in Iceland.
At three o'clock in the afternoon, Lin Dong woke up from a nap.
Zhang Xiali changed into her outdoor clothes, pulled a small shopping cart, and called out.
"Xiao Dong, Mom is going to buy groceries. If you're hungry, there's something in the fridge."
"Okay, Mom, be careful."
Lin Dong responded, washed his face, grabbed a bottle of milk, and went into the study. Just as he turned on his computer, a message popped up on his phone.
[Xu Qingling]: I'm going to make a cake with my mom, do you want to join me?
[Lin Dong]: Yes, I'll be there in a bit.
[Xu Qingling]: Then I'll peel some melon seeds. I'm just getting ready, it won't be that quick.
[Lin Dong]: Okay, you can put in more.
Lin Dong picked up his phone and chatted for a few minutes about everyday things. He then logged into Wang Xingguo's email account and saw a list of unread emails sent that afternoon.
[Chengfei Huang]: Engineer Wang, these are the parameters calculated based on the size, power points, and cable distribution of the J-16D fighter jet, according to the aircraft's insulation specifications, through actual tests at different voltages.
If using mainstream AC solutions, the entire cabling system weighs approximately 740 kg. However, if using the latest 270V high-voltage DC architecture, eliminating the CSCF converter, and reducing the wire diameter, the weight can be reduced to 480 kg…
"A difference of nearly 260 kilograms is quite a considerable amount..."
Lin Dong carefully read the email, a thoughtful look appearing on his face.
Thanks to some optimizations and improvements, the J-16D's total electronic equipment, including radar, electronic warfare equipment, and cooling system, has a peak power of 340 kilowatts.
According to the design plan, the J-16D fighter jet will use two 200 kVA, 100 kg aircraft generators connected to the WS-10 turbofan engine for power generation.
A centralized power supply model is adopted to provide unified power to the six electronic pods and radar equipment of the entire electronic warfare system.
A centralized power supply mode can ensure more stable power output and allow for better design of the heat dissipation system.
This is one of the fundamental reasons why the J-16D can carry one more pod than the distributed power supply-driven Growler, and the average power of each pod also exceeds that of the Growler.
In addition, the J-16D also has an APU small gas turbine generator as a ground starting power source.
There is also a small ramjet air turbine generator, which, in an emergency situation where the main engine and APU fail in the air, can be ejected from the fuselage to generate electricity using ramjet air, providing emergency power to core equipment such as the cockpit, flight control, and ejection seat.
Lin Dong has not yet determined whether the entire line will use alternating current or direct current.
"The output of an aircraft generator is alternating current. If a 270V high-voltage DC solution is adopted, an AC to DC rectifier needs to be added, which will increase the losses and heat dissipation load."
But now that gallium nitride technology has made breakthroughs, the stability and efficiency of the modules are guaranteed, so even with a weight of 260 kilograms, there's still a lot of profit to be made..."
After calculating in his mind and asking about Wang Xingguo's situation, Lin Dong replied decisively.
[Wang Xingguo]: Engineer Huang, please provide a detailed wiring diagram and heat dissipation plan based on the parameters of the J-16D project, using a 270V high-voltage DC scheme and a centralized power supply mode. Note that the rectifier module should have an additional redundant design.
Previously, the mainstream power supply solutions for fighter jets were 100V or 200V/400Hz AC solutions.
Because by adding a constant-speed, constant-frequency CSCF converter to the aircraft generator to match the constantly changing speed of the fighter jet's engine, the power supply for the entire fighter jet can be connected in one continuous path.
However, with the increasing number of high-power radars and electronic devices in modern fighter jets, the total power of the aircraft's electronic equipment has been rising steadily.
Because power equals voltage multiplied by current.
With constant voltage, the greater the power of the equipment, the greater the current in the line, and the thicker the power supply cable, which has become an obstacle to the lightweight design of fighter jets.
Ultimately, the 270V high-voltage DC solution was developed.
Eliminating the bulky CSCF converter, the generator's output power is directly rectified into 270V DC, which then powers various devices...
However, the high-voltage DC solution also has drawbacks, namely that the efficiency of the AC to DC rectifier is only 90%, which will result in the loss of some power and an additional significant heat dissipation burden.
However, with the breakthrough in gallium nitride technology, the switching efficiency of rectifiers can now be increased to 95%, while stability can also be guaranteed.
The 260 kg weight saved can be used to carry an additional LD-10 anti-radiation missile, and the power loss and heat dissipation burden in this part are already acceptable.
"That's how large fighter jets are designed."
"They're trying to cut corners here and there."
"As they kept digging, they managed to figure out the weight of a missile."
Lin Dong sent out the email, thought for a moment, opened a design interface, and began to conceive the preliminary design of the electronic pod.
It's been confirmed that the electronics company is unreliable.
The J-16D's electronic pods can only be installed by the user themselves...
"Well, it's not too difficult. Let Engineer Wei collect actual data through experiments."
It was not yet five o'clock in the afternoon.
Lin Dong confidently completed the preliminary design of a broadband jamming system and an electronic deception pod.
After rigorous calculations, it was determined that there were no obvious problems with the plan. The plan's test diagrams were then compiled and sent to Engineer Wei, who was asked to collect the relevant data in a microwave anechoic chamber.
Ding-dong-
The email was sent out not long ago.
An unread email notification popped up in my inbox.
The next moment, a message popped up on Lin Dong's secure phone, which he had placed aside.
【002】: I had some free time and went on the computer, so I sent you a message.
"What's the rush?"
Lin Dong paused for a moment, then quickly opened the email that Lin Weiliang had sent to Wang Xingguo's inbox.
002 was the nickname Lin Dong used on his secure mobile phone for Lin Weiliang, a reminder of Lin Weiliang's instruction to perform his duties responsibly.
Because Lin Weiliang was on a business trip, the information was transmitted across different organizations, and the security of the intermediary lines could not be guaranteed.
Any work-related matters would be sent directly to Wang Xingguo's email address, and then Lin Dong would log in to Wang Xingguo's email to check them.
After all, it makes sense for Lin Weiliang to send an email to Wang Xingguo, given the work situation.
But sending an email to Lin Dong would be illogical and inconsistent with work practices, and would be immediately obvious.
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