Su-57 ZhuHai Airshow

[Zaphod58]

It’s a thrust to weight demonstration more or less. At normal takeoff weight the Su-57 has a thrust to weight ratio of 1.09, and 0.97 at loaded weight. For an Airshow, with minimum fuel it’s probably closer to 1.11. That allows for them to use thrust to “hold” the aircraft in the vertical position like you saw in the video. Most of these maneuvers aren’t really useful in combat, but look great at Airshows.