ptldM3
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"You showed in Your last posts but if You look closely in all images there is an angle noticeable, which is clearly visible ... and in all images on the J-20 never. Not in the air, not on the gro Ground und, simply never."
View attachment 372135
View attachment 372136
Your fanboyizm is causing you to see something out of nothing. The J-20 has variable nozzles, meaning the diameter of the nozzles changes. So those lines you drew claiming to show thrust vectoring is just one nozzle with a different diameter from the other.
Yes, it is a mystery that the Russian TVC has two sections and moves so much, while other country's TVC moves only the last section, thus moves much less.
There is no mystery. The Russian TVCs do not have two moving sections. That would not even make sense.
It is reported that the Indian's SU-30MKI's TVC has only 26 hours of activation life before maintenance, while China's could last well over 126 hrs of activation, before maintenance is needed.
China does not even have TVC nozzles in any flying aircraft so how do they know that it requires 126 hours before maintenance?
As for Indian media and complaints from Indian officials. No one takes either seriously. I don't know if that 26 hour figure is true but Indian Air Force officials have habits of complaining about everything, case in point MRCA and Rafael. Maintenance figures are also subjective. I can go 10,000 miles without changing my oil even though it is recommended I do so every 3,000 miles. Similar if maintenance is recommended every 26 hours it does not mean you can't push it well past that. Manufacturers give recommendations as to when maintenance should be done, their numbers are always conservative for liability reasons. It would be irresponsible for a manufacturer to recommend an oil change at 15 or 20 thousand miles even although the engine may still be working at those maintenance intervals, the problem is that it may have damage at those maintenance intervals.
China, Russia, the US or anyone can slap any recommendations for maintenance they want. Just because China may recommended maintenance be done at x amount of hours doesn't not mean that Russia or the US would recommend the same maintenance schedule on the same equipment.
I think the Russian 3D TVC is over done, as other 3D TVC nozzles have shown, it don't need that long and complicated to move the plane effectively.
I think aeronautical engineers, scientists and designers know more about designing jet nozzles then someone on PDF that did not know what a vertical stabilizer was.
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