su30 vid
Does performing these manouvers stress the a/c more than standard flying, that is this short flight probably added more fatigue to the frame than a "normal sortie". Although as a demonstrator it will probably be junked after a few thousand hours anyway.
And how do you stress parts of the a/c that aren't necessarily designed to cope e.g. the radome is meant to point into wind mostly, how does it cope with a 90* aoa (at 300-400kts?) or the sideways motion imposed on it?
It does however look mighty impressive for a big 'un.