As for the limited optical visibility, experts largely attribute it to use of metamaterials and so-called “e-camouflage” in the more recent versions of the PAK FA.
Is this for real?
T-50 can do it all.
A cloaking device?
Couldn't I see you with IRST?
It would be nice in a dog fight. Even if it only gave me a few seconds.
I don't know. Read it your self. You tell me. Thanks.