>>216444540
>>216444784
He's saying that the whole Stealth technology for Aircraft was invented by a Russian engineer in Russia, whose book was taken by the head of Lockheed, who decided to implement his theory. So it's not American technology, but the American embodiment of Russian technology.
Also, all your 5th generation aircraft are a bunch of unjustifiably expensive crap that breaks down when dust gets into the engine, as evidenced by numerous videos and news reports. Moreover, the VTOL F-35 uses a slightly modified version of the VTOL Yak-141 concept, which the US acquired from Russia. You also don't have a single 6th generation fighter jet. We do.
The Su-57 itself is a ‘test laboratory’ for the new Su-75, because Russia took a long time to recover from the planned economy of the USSR, and by that time the development of the fifth generation was no longer so relevant.