The Russian fifth-generation Su-57 fighter confidently performs any aerobatics in the sky thanks to the stable and surge-free operation of the engines. This was stated by the General Designer-Director of OKB named after A. Lyulka, Evgeny Marchukov.
According to him, the main task for engineers is precisely to guarantee the stable operation of power units in all flight modes.
The main thing is to ensure that the engine works stably. It sometimes flies tail forward. Ensuring the stability and surge-free operation of the engine is where the whole secret lies. Why doesn't the F-16 fly with strong aerobatics? They can't.
Marchukov also explained why the Su-57 engines are not affected even when the pilot performs the most complex aerobatic maneuver "the bell", when the aircraft rises to a height and literally freezes at one point.
The engines are tested for these loads with a threefold margin, so there are no [problems]. During the heat, the thrust drops, but here is a good engine and a good aircraft.
At the end of December, the United Aircraft Corporation (UAC, part of Rostec) conducted the first test flight of the Su-57 fighter with a promising fifth-generation engine "Product 177". The machine was lifted into the sky by Honored Test Pilot of Russia Roman Kondratyev. The afterburner thrust reaches 16,000 kgf.
Major General of Aviation Sergei Lipovoy emphasized that the Su-57 surpasses any combat aircraft in its class, therefore any criticism of the fighter in the West is untenable.
