Sukhoi T-50 at MAKS 2011.

The 101KS-V sensor can simultaneously detect, identify and track multiple airborne targets and is fitted in a turret mounted on the starboard side of the forward fuselage in front of the cockpit.

Some of the T-50's life support systems; the NPP Zvezda K36D-5 ejection seat, and the SOZhE-50 life support system, including the PPK-7 pilot suit and ZSh-10 helmet.

The Tikhomirov NIIP Institute displayed the N036-01-1 active electronic scanning antenna of the T-50's forward X-band N036 radar.

The Atoll system also has the 101KS-N sensor installed in a targeting pod which is carried on the underside of the T-50's engine air intake. The sensor can detect, identify and track ground targets.

The 101KS-O sensor is a laser-based directional countermeasure for heat-seeking missiles fitted in a turret on the upper fuselage spine aft of the cockpit.

Another shot of the T-50's targeting pod.

The smaller of the two 101KS-U sensors

KAB-250 is a 250kg (550lb) precision-guided missile that measures 3.2m in length, the missile fuselage has a 255mm diameter and a 550mm fin span. The missile is carried in the T-50's weapons bay on a UVKU-50L ejection launcher.

Atoll also includes two ultraviolet sensors each designated 101 KS-U, one being larger than the other.