The Su-57 sensor suite is all coupled and controlled by a central computer. the Sukhoi Design Bureau was responsible for the systems integration. This is unusual as previous aircraft had systems that were integrated by the instrument manufacturers.
Sh121 suite:
[[N036]] – front radar
[[N036B]] – side-looking radar x2
[[N036L]] – IFF array x2
101KS E/O: System
[[101KS-V]] – IRST sensor
[[101KS-U]] – UV missile warning sensor
[[101KS-O]] – unknown sensor
[[101KS-P]] – IR imaging sensor
[[101KS-N]] – targeting pod
[[L402 ECM]] – electronic countermeasure pod
Engines:
[[AL-41F-1 Engines]]