English 
Spanish 
2 min read
8 comments
The SU-57 fighter jet features 6 advancements in the Russian fighter's new stealth engine, including thrust vectoring and an improved design, that promise to revolutionize the skies
For the first time, the Russian SU-57 fighter jet has been equipped with a new stealth engine. The highlight is a new type of thrust vectoring engine nozzle, whose angled and flattened design aims to enhance the stealth characteristics of the SU-57. This technological advancement will be integrated into the AL-51 F1 engine in the improved version, the SU-57M.
So far, the SU-57 used the engine AL-41 F1, the same one present in the SU-35 fighter. However, this configuration is not ideal for stealth aircraft.
Fighter jet engines often have serrated ends to reduce radar reflection and create a swirl pattern that mixes hot gases with the surrounding cool air. This reduces the plane's thermal signature, making it harder for passive systems like IRST to detect.
- Mysterious pyramid in Antarctica: The natural structure that intrigues scientists and boosts theories of lost civilizations
- Police issue warning over WhatsApp hack — Act now before it’s too late
- Move over, Starlink: China's satellite technology is set to redefine global connectivity
- How Nokia rose from the ashes and now makes an impressive $24 billion a year
The major innovation of the new stealth engine of the Russian AL-51 F1 fighter compared to the AL-41 is the two-dimensional thrust vectoring capability, focused on pitch control.
Unlike the AL-41, which allows three-dimensional vectoring (pitch, yaw and roll control), the AL-51 F1 significantly improves the maneuverability of the SU-57, allowing tighter turns and operations at low speeds, such as at the angle of attack.
This type of stealthy flat engine nozzle is already used on the US F-22 Raptor fighter, making comparisons inevitable. However, the future of the SU-57M is still uncertain. It is not known whether or when this new stealth engine will actually be integrated into the improved version of the SU-57.
Progress will depend largely on future orders for the SU-57, which can boost development of the SU-57M and lead to mass production of the AL-51 F1 engine, currently only a prototype.
This is a wholesale copy of the F22
No, besides having a different shape, this one can point to the sides.
The Su-57 beats the 35 in virtually every aspect.
I doubt it very much, but it is a wrong comparison since the right thing to do would be to compare it with the F-22 which has the same purpose.