...if you know have many suppliers or just how many kilometers of aircraft harnesses are in a modern aircraft, then you know China received help, do you think it looks like F-35 just by coincidence only a fool can think like that,...
Very good, sir...
I will add some more controversy to the debate...
Here is the C-17, a cargo or 'trash hauler' design...
https://en.wikipedia.org/wiki/Boeing_C-17_Globemaster_III
Here the F-104, an interceptor or 'go fast' design...
https://en.wikipedia.org/wiki/Lockheed_F-104_Starfighter
These two jets are like east and west, and ne'er the twain shall meet.
In the middle between the C-17 and the F-104 are literally millions of conceptions, plans, prototypes, and deployed designs for every mission type. Here is what people do not understand: conceptions outnumber plans, plans outnumber prototypes, and prototypes outnumber deployed designs. What it means is that by the time the manufacturer and customer agreed upon a design, we are looking at several discarded conceptions, plans, and prototypes before said agreement. Then money exchanged hands and production begins.
Most people believes the F-15 came from the MIG-25. In fact, most Internet forum takes exceptional glee in pointing out how the Americans 'copied' from the MIG-25. In truth, the F-15 and the MIG-25 came from the A-5. The deployed A-5 design have a single vertical stabilizer, but the original readied to be deployed final design had twin vertical stabilizers, which the US Navy deemed too radical, so North American modified the design to have a single vertical stabilizer.
Using the A-5/F-15/MIG-25 example, the evidence for 'help' is clear. If you see someone flying a novel design, already at least 1/4 if not 1/3 of the hard work is completed for you. The assistance is indirect. There is no doubt of the genetic tie between the American F-16 and the Japanese F-2. Same for the older F-18 Hornet and the newer and larger F-18 Super Hornet.
When I transitioned from the F-111 to the F-16, I learned that when the F-16 debuted, its bubble canopy with its clarity and toughness practically shocked air forces worldwide. There have been canopies have been sort of bubble-like designs in the past, even as far back as WW II. What made the F-16's canopy exceptional was its curvature from front to rear. Past bubble-like canopies were partial with a planar section in front for HUD distortion free. The F-16's true bubble canopy was curved all around and still distortion free for the HUD camera view. Knowing this is possible with the F-16, aircraft makers worked to incorporate new transparent materials and manufacturing techniques for their designs. Knowing what a competitor can do is already 1/2 of the assistance. The other half is up to you.
When you said suppliers and kilometers of wiring, that is exceptional perception of logistics, sir.
In the US military, each service branch have its own version of 'foreign technology exploitation' office. Inside this office is the intelligence section where they tries to glean as much information as possible about any adversary hardware. Anything from who supplies the paint to the oil to the electronics. Have no doubt the PLA have the same intent and operations to extract information from any source.
When Lockheed was building the SR-71, if it was known that it was Lockheed who was buying titanium, that would have triggered an investigation by the Soviets, so a front company was created to buy titanium and even bought from the Soviets.
https://www.smithsonianmag.com/smit...lackbird-epitome-cold-war-spycraft-180953402/
...the SR-71 almost entirely out of titanium, a metal that is heat resistant and relatively lightweight but difficult to work with. In the early 1960s, it was also hard to find. One of the best sources was the Soviet Union, so the CIA, which also oversaw development of Blackbird’s predecessor, the A-12 Oxcart, set up shell companies abroad to purchase the metal from the very nation it was spying on.
Right now, any US company that is working on artificial intelligence is being closely watched by China's intelligence services. The idea that future versions of the F-22 and F-35 with AI as co-pilot is as great a threat as a new missile design.
The forum's Chinese members, and their supporters, takes great offense at any mention that Chinese 'stealth' designs may have foreign assistance of any type. But you are on the correct path.