Systems and Avionics
The basic Su-27 is fitted with the SUV-27 fire control system, which incorporates the RLPK-27 radar
sighting system, OEPS-27 electro-optical sighting system, SEI-31 integrated indication system, IFF
interrogator and built-in test system. The fire control system in integrated with the PNK-10 flight
navigation system, radio command link, IFF system, data transmission equipment and EW self-
defence system.
Figure 18: N001 radar
The RLPK-27 system and is controlled by the Ts-100 digital computer and includes the N001 pulse-
Doppler lookdown-capable radar with a range of 80-100 km in the front hemisphere and 30-40 km in
the rear hemispehere for a fighter-sized target. It can simultaneously track up to ten aerial targets in
track-while-scan mode and provide interception of the top priority target.
Figure 19: OLS-27 IRST
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